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807-General-Manual_Jan-2012

1. 9 3 3 REFERENCE SWITCH AND LEVEL ALARM SWITCH IF FITTED esses 9 3 4 SWITCH OPERATION 10 3 5 Se 10 3 6 LEVEU TRANSMITTER IF FITTED 2 22 22 52 5 0 2 xci eee E ee Ee ER 11 3 7 Ol SRI Tc 11 3 8 STARTING UP enne de O 11 3 9 RECOMMENDED OILS FOR LEVEL GAUGES 1 3 12 4 OPERATION 13 4 1 OPERATION WITH MANUAL FLOAT HOISTING MECHANISM nnne 13 5 MAINTENANCE 13 6 Ij ie 8 18S eopa c 14 7 PARTS LIST 807 SERIES MARINE LEVEL eee enne nenne noon nannten onn 15 7 1 RECOMMENDED SPARE PARTS FOR LEVEL GAUGES 1 rn nennen sna anrea 17 7 2 HOW TO ORDER SPARE PARTS denso sea avo saves ossa espe regens posa a SY Re Fu 17 7 3 TOOUS 17 8 SPECIFICATIONS EE 18 9 DRAWINGS OF 807 SERIES MARINE LEVEL GAUGES aanne 19 Fig 1 Dimensions of level gauge naaa
2. EIE ER eaae 22 Fig 4 Local indicator reference alarm switches and transmitter eese 23 Figs Viewofsphnmg Motor POS o reve repa ade nne tha Fer bano pe eL Eae REA RETE Eae Ea a ET 24 Fige Viewof hoisting mechanism ree e es etae eee p eene Yo Fee en epa ka uana Eaa keai a 25 RU o MION DOR 2222 2n 26 Rus Window parts and NIEL cione te Oe ey 27 Fig SHANG Motor compartment rsen nk 28 10 BE SI TRECE TIE 29 Fig 11 I STD RH OTIO 30 Fig 12 eH MC SU TEL TDI LITE 31 Fig 13 Open view measuring drum compartment seeessessesee esee 32 Fig 14 MERITIS E 33 Fig 15 vevel on epe 34 Fig 16 Reference ar alarmi SATION nn ei esee re ea Re ir rara Pa NER RR XR EF AREE EUR EE re EY 35 Fig 17 siete E I RO PIC LP TODOS TTL 36 Fig 18 On 37 Systems Holland B V Page 19 of 45 FTLG 807 MARINE LEVEL GAUGE FLANGES DN150 or 6 D DIN PN16 285 DIN PN40 300 ANSI 150LBS 11 ANSI 300LBS 12 JIS 10K 280 JIS 20K 305 Henri Systems Holland B V BC 240 250 10 240 260 Fig 1 Dimensions of level gauge Q OIL FILL pl loom E Holes 8x22mm 8x26mm 8x34 12x34 8x23mm 12x25mm JUNCTION BOX CABLE GLAND 818 25
3. Henri Systems Holland B V Page 31 of 45 Fig 13 Open view measuring drum compartment Henri Systems Holland B V Page 32 of 45 HSH Fig 15 Level transmitter Henri Systems Holland B V Page 34 of 45 IHSH Fig 16 Reference or alarm switch Henri Systems Holland B V Page 35 of 45 HSH Fig 17 Float hoisting mechanism Henri Systems Holland B V Page 36 of 45 HSH Fig 18 Float Float assembly P N 0807 270 Weight 315 Material SUS 3161 Total volume 515 cm3 127 45 Henri Systems Holland B V Page 37 of 45 IHSH MARINE INSTRUMENTATION USER MANUAL FTLG 807 0112 10 Technical information 10 1 Immersion table CS Specific Gravi Immersion 5 Henri Systems Holland B V Page 38 of 45 IHSH USER MANUAL FTLG 807 0112 10 2 Thermal expansion SUS measuring wire mm m C STITT TTT TT EEE Od EL 111b uu dr Figure 21 Henri Systems Holland B V Page 39 of 45 IHSH MARINE INSTRUMENTATION USER MANUAL FTLG 807 0112 10 3 Thermal expansion Invar wire mm m C 180 170 160 150 140 130 120 110 100 22 Henri Systems Holland B V Page 40 of 45 10 4 General mounting adt LEVEL SAMPLING INTAKE VALVE EF SHIPYARD OPTION 8 6 ADAPTOR FLANGE 8 GATE VALVE WEATHER DECK GLASS INSULATION PIPE
4. TANK CEILING 15 MM INAS PRIMARY BARRIER EE S 8 St HOLE OF 10 MM INTERVAL OF 5000 MM Fig 20 Henri Systems Holland B V Page 41 of 45 10 5 Transmitter and internal wiring diagram 2N EN un a N A un N A un o m N A un a N EN o N EN un an i Transmission Signals REED CONTACTS Reference Alarm 1 Alarm 2 Reference open reference closed measuring Alarm 1 amp 2 open darm closed norma Alarm 2 Alarm 1 Reference JUNCTION BOX Transmitter Fig 23 Henri Systems Holland B V Page 42 of 45 MARINE INSTRUMENTATION KEMA Examination certificate KEMAZ 1 2 3 4 8 6 7 8 9 19 11 12 EC TYPE EXAMINATION CERTIFICATE Equipment and protoctive systems intended for use in potentially explosive atmospheres Directive 94 9 EC EC Type Examination Certificate Number KEMA OSATEXO155 X Issue Number 1 Equipment Float Type Level Gauge FTLG Model 807 Manufacturer Henri Systems Holland B V Address Scheepmakersstraat 33 3334 KG Zwijndrecht The Netherlands This equipment and any acceptable variation thereto specified in the schedule to this certificate and the documents therein referred to KEMA Quaity B V notified body number 0344 in accordance with Ar
5. 0112 10 TECHNICAL INFORMATION ccsccssscssscccerscusercersenssccussesessoussesssscuspanrascussacsuscursesauseursesanseuras 38 10 1 IMMERSION TABLE 38 10 2 THERMAL EXPANSION SUS MEASURING nennen nean nsn snnt nsns nnne 39 10 3 THERMAL EXPANSION INVAR enne sense ensure ses assesses 40 10 4 ME baande 41 10 5 TRANSMITTER AND INTERNAL WIRING DIAGRAM 2 42 KEMA EXAMINATION 43 Henri Systems Holland B V Page 3 of 45 HSE USER MANUAL FTLG 807 0112 1 Introduction IMO resolution A 212 VIT and resolution A 328 IX give the following definition for a closed type liquid level gauge Closed devices which penetrate the cargo tank but which form part of a closed system and keep the cargo tank contents from being released such as float type systems The HSH FTLG 807 series marine level gauge is a float type level gauge with a linear spring motor to provide power for measuring liquid level in cargo tanks The FTLG 807 series marine level gauge can be used on all types of ships carrying liquefied gases in bulk The HSH marine le
6. applied from the measuring drum to the spring motor via the magnetic coupling The torque of the spring motor is lower than the torque caused by float weight and measuring wire The difference in torque allows the float to descent but with the float at the cargo equilibrium will be reached as the float apparently obtains a lower weight in cargo In this situation the spring motor maintains a constant pull in the measuring cable When the cargo level raises or lowers the float follows the level changes and causes the measuring drum to wind up cable or to release cable The rotation of the measuring drum and spring motor is a measure for the amount of level change To indicate the measured levels a digital counter mechanism is fitted at the spring motor to translate the measuring drum rotation in mm s level The spring motor basically consists of a storage drum a torque output drum and a length of flat spring material Each position of the flat spring material is preset to the same curvature in such a way that it can be completely straightened without deformation Because of this presetting the spring material curls up and forms a coil By mounting the coil on a free rotating storage drum and by uncoiling it reverse bent on a torque output drum a constant torque drive is constructed as the tendency of the spring material is to recoil to its preset curvature thus imparting a constant torque to the shaft of the torque output drum The 807 series
7. marine level gauges are accurate level read out instruments which are used during loading or discharging of tanks During the voyage the floats must be hoisted to uppermost position If after loading the cargo loading lines are blown empty the floats must be hoisted first Failure to do so may cause considerable damage to the instruments The level gauge is provided with a float hoisting mechanism with magnetic slip clutch that prevents over winding In uppermost position of the float the measuring drum is automatically locked After unlocking of the measuring drum the float descents with constant speed to the cargo surface or tank bottom The float descent speed is controlled by a regulator paddle wheel which rotates in the oil of the spring motor compartment This compartment is filled with approx 7 liters of oil The oil serves not only the regulator but also lubricates the spring motor provides a condense free level display window and inhibits corrosion Henri Systems Holland B V Page 5 of 45 IHSH 1 2 Level gauge identification code USER MANUAL FTLG 807 0112 Position 1 2 3 4 567 Example FTLG 807 SUS TA 39 Pos 1 Float Level Gauge 2 807 marine level gauge Pos 3 SUS Stainless Steel 316 Measuring Drum and Measuring Wire INV Invar 36 Measuring Drum and Measuring Wire Pos 4 slash Pos 5 T with intrinsically safe level transmitter Pos 6 A with 2 integral
8. reproduced in its entirety and wthout any change KEMA Quality B V Utrechtseweg 310 6812 AR Arnhem Box 5185 6802 ED Arnhem The Netherlands 31 26 3 56 2000 F 31 26 3 52 58 00 customer kemacom www kema com Registered Amhem 09085202 USER MANUAL FTLG 807 0112 SCHEDULE 14 to EC Type Examination Certificate KEMA 06 0155 X Issue No 1 15 Description The Float Type Level Gauge FTLG 807 is a mechanical float type level gauge for measuring liquid levels The Level Gauge is provided with a local read out and three sensors for remote read out Three switches are present alarm outputs The enclosure is made of cast steel or stainless steel The measuring drum compartment consists of mechanical parts only and is equipment category 1 The remaining part consists of mechanical parts and electronic circuits and is equipment category 2 The electronics is in type of protection intrinsic safety EEx IIB Ambient temperature range 20 C 60 Electrical data Sensor output circuits in type of protection intrinsic safety EEx ia terminals 1 and 4 5 only to be connected to Remote Level Indicator Model AMTG 2 b and 4 5 3 and 4 5 821 02 or certified intrinsically safe circuits with the following maximum values for each circuit U z 16 V 52 mA P 169 30 nF L 50 pH Alarm outputs Intype of protection intrinsic saf
9. to open when the float reaches the highest point against float stops against the mounting flange or above the valve This means that the switch is closed from the moment the float is released and the level gauges thus in operation A high level alarm switch must be set to open when the cargo level has reached the required level Under this level the switch must be closed A low level alarm switch must be set to open when cargo level has reached the required level Above this level the switch must be closed This is contrary to the high level or reference The construction of reference switch high and low level alarm switches is identical a magnetically actuated reed contact The reed contact is fitted on a printed circuit board The complete print board is fitted at the switch frame A small magnet is fixed in the last digit wheel at the 2 o clock position During non alarm condition the magnet must be positioned directly in front of the embedded reed contact In this position the switch is closed normal condition At the required level setting the magnet turns away from the reed contact thus opening the switch Remark The turning direction of the spring motor for setting high level alarm and reference is clockwise For low level alarm the turning direction is anti clockwise 3 5 Switch setting Turn the spring motor by hand until the local read out shows the required level alarm setting for level alarm switches or until the
10. 20 Fig 2 Layout of main components uaa 21 Fig 3 Open view of spring motor eene eene rnnt 22 Fig 4 Local indicator reference alarm switches and transmitter eese 23 Fig 5 View of spring motor parts nnns enn 24 Fig 6 View Of hoisting mechanism esses enenatis 25 Fig 7 View of junction ee tnn s 26 Fig 8 Window parts and location ssssssesssseeseee eene eene enenatis nnn 27 Fig9 Fitting spring motor hehe nennen nnn hh nna 28 Fig 10 Fitting separation plate 29 Fig 11 MaN Shaft sirevi 30 Fig 12 z Main shaft patte E LER FORE ORBE 31 Fig 13 Open view measuring drum eene 32 Fig 14 Measuring drum assembly isses enne nnne netta nsns 33 Fig 15 x Level transmlttek ioc d ee e EUR era EE det 34 Fig 16 zReference oralarm switth iiti rt ti ctor et E ERATES ERN 35 Fig 17 Float hoisting mechanism isses eene nnne ntis enenatis nenas 36 Fig 18 dove LE 37 Henri Systems Holland B V Page 2 of 45 HSH USER MANUAL FTLG 807
11. 807 500 807 501 807 510 807 520 807 531 807 540 807 550 807 560 807 570 807 580 807 590 60 7 Cabegand 807 600 807 611 807 620 64 8 local indicator 80764 65 8 Gasket Window local indicator 807 650 66 8 Window frame local indicator 807 660 807 670 68 4 _ Bolttofixtransmitter 2 1807 680 69 17 O ring hoist lock mechanism 807 691 70 6 Nutforhoistock mechanism 7 807 700 70 6 Nut special hoist lock mechanism 807 701 807 710 807 721 807 730 807 731 807 740 Bolt to fit motor LT Screw to ft mote spring end end BAO 750 Screw to fit motor spring 76 5 _ Screw to fit motor springend 807760 760 Set ring assembl EN aa 777 5 Oil brake complete 807 777 807 780 807 790 80 5 Washermainshat 807400 807 810 807 820 807 830 807 840 807 850 86 17 gear hoist lock mechanism 807 860 807 904 807 904 89 17 ShafthoistWock mechanism 1807 890 90 3 Handcranh 80790 807 910 807 920 807 921 9 Bolt to fix motor compartment 807 940 807 950 En 807 961 Nut to fix window 807 970 Henri Systems Holland B V Page 16 of 45 HSH 7 1 Recommended spare parts for level gauges USER MANUAL FTLG 807 0112 Pos Fig Description Qty Art 3 13 3 13 O ring drum compartment 2 807 030 8 3 Gasket motor compartment 2 pcs 807 082 14 9 O ring mo
12. AL FTLG 807 0112 4 1 Operation with manual float hoisting mechanism The operation of the level gauge is very simple To hoist the float simply place the hand crank see fig 3 item 90 on the shaft at the spring motor compartment and rotate slowly clock wise The magnetic coupling of hand crank and hoisting mechanism prevents over winding When the float has reached the highest point against float stops the hand crank slips through the magnetic coupling Check the local read out level At the highest point of the float the level gauge is automatically locked After the float is hoisted the hand crank must be removed To start measurement the float must be released from the hoisted position Engage the hand crank and turn 1 one revolution anti clock wise Remove the hand crank when the float is released Float release is visible at the local read out Check the oil level at regular intervals e g every month A too low oil level will result in an excessive float descend speed Normally the oil level is visible through the local read out window 5 Maintenance The oil filling of the level gauge should be renewed preferably once every 5 years Always use clean oil for filling The minimum and maximum oil level can be checked by removing the oil fill plug Minimum level is at the lower edge maximum is at the upper edge of the fill pipe stud Once every 5 years the terminal box should be checked for moisture If silica gel sachets are p
13. INSTRUCTION MANUAL FTLG 807 marine level gauges HSF MARINE INSTRUMENTATION Work address Henri Systems Holland B V Scheepmakersstraat 33 3334 KG Zwijndrecht Netherlands Tel 31 0 78 6100999 Fax 31 0 78 6103214 Henri Systems Holland B V Mail address Henri Systems Holland B V P O Box 198 3330 AD Zwijndrecht Netherlands E mail infoGhsh nl www hsh nl HSH USER MANUAL FTLG 807 0112 Contents 1 INTRODUCTION ec devs cass a pa N 4 1 1 LEVEL GAUGE CONSTRUCTION AND WORKING enne nnne nnns nnns nian nnn 5 1 2 LEVEL GAUGE IDENTIFICATION CODE sssecccssssccccnsecccceseccccaseccesaseececassecesanseceeaseccesaseecesaneecesaasees 6 1 3 ACCURACY E Q 7 2 dej gc 8 2 1 MOUNTING OF LEVEL GAUGES 2 41 4741 4 20 4 8 2 2 E 8 3 aep uhue cmmeP 9 3 1 SPRING MOTOR ADJUSTMIENT driven ee trens ae ee met dennennaalden dalen 9 3 2 LOCALLEVEE INDICATOR SETTING
14. d 4S USER MANUAL FTLG 807 0112 0 39 AL 2 0 0 151 L is the meas Level 2 0 mm 1 5 mm 2 0 MPa 20 bar 165 90 C 20 C 60 C AISI SUS 316 AISI SUS 316 or INVAR 36 AISI SUS 316 or Invar 36 AISI SUS 316 welded no seals Stainless steel encapsulated SmCo AISI SUS 316 65 kg in type protection intrinsic safety EEx ia IIB only to be connected to remote level indicator model AMTG 821 02 or certified intrinsically safe circuits with the following maximum values for each circuit Ui 16 V Ii 52 Ma Pi 169 mW Ci 30 nF Li 50 in type protection intrinsic safety only to be connected to remote level indicator model AMTG 821 02 or certified intrinsically safe circuits with the following maximum values for each circuit Ui 16 V Ii 52 Ma Pi 169 mW 0 nF Li 0 HH The sensor output circuits and the alarm output circuits have one connection in common Henri Systems Holland B V Page 18 of 45 HSH USER MANUAL FTLG 807 0112 9 Drawings of FTLG 807 series marine level gauges ET Dimensions of level qiie isse noct eei ere e pee sedans ead eoa e ER Eaa RR Rey Eaa aa 20 Fig2 Layout f muli components iiie eie rer esser esto reuse aperta ERE ERR RE iiia ad nage 21 0pen view of spring motor compartment iueeeeiieee esee ssepe reae
15. d out of the local level indicator fig 4 item 61 During initial installation it is obvious that the factory setting is not similar to the required setting To obtain an accurate setting the fixing screw of the local indicator fig 4 must be unscrewed Pull out the local indicator and set it approx to the required setting and fit it back into its position so that the drive gear and indicator gear are not yet engaged Now make the final setting setting accuracy 2 5 mm and fix the local indicator home making sure that the gears are correctly engaged Fasten the local indicator by tightening the screw 3 3 Reference switch and level alarm switch if fitted Level gauges with intrinsically safe level transmission and digital remote level readout can be fitted with 2 level alarm switches and a reference switch The reference switch is required when a level transmitter is fitted The reference switch gives the start signal for the remote level indicator and ensures during operation of the level gauge synchronization of the local read out and the remote read out Reference switch and level alarm switches are designed for NC normally closed circuit The level alarm switches are optional when level transmission is fitted and can be connected to several types of HSH AMTG series remote level indicators Henri Systems Holland B V Page 9 of 45 HSH 3 4 Switch operation USER MANUAL FTLG 807 0112 The reference switch must always be set
16. earings will be selected for their typical operational conditions Depending on the selection of the type of measuring drum bearings the hysteresis may vary from a maximum allowable 40 g measured at the measuring cable as top top value to only 10 g e The accuracy of constant torque output of the spring motor The spring motor has a linear character with a tolerance of 10 g measured at the measuring cable The density of the cargo influences the buoyancy of the float or the displacer In light cargoes the float will sink deeper than in heavy cargoes See float immersion diagram f The size and type of float used Small diameter floats are more influenced by change of density than larger diameter floats See also float immersion diagram g The cargo and tank temperature can influence the accuracy of the measuring system particularly if the tank material is different of that of the measuring cable and measuring drum The difference in thermal expansion co efficient of different materials causes measuring errors but these may be partly compensated by way of mounting construction h The temperature compensation diagram indicates maximum possible measuring errors caused by measuring wire expansion Considering only the factors a b c d and e the accuracy of the measuring system can be expressed in the following formula AL 2 0 0 15 1 mm AL Accuracy Suspended length in meters 1 is the amount of suspended measurin
17. ecessary maintenance can be _8 GATE VALVE carried out while the cargo tank is in service If i For float type liquid level gauges 5 i i LE O SAMPLING INTAKE VALVE SHIPYARD OPTION 8 6 ADAPTOR FLANGE any necessary maintenance includes inspection of the float and therefore it is recommended to mount the level gauge on a full bore ball valve or gate valve which allows free passage of the float see WEATHER DECK fig 19 ws By using a float with a diameter of oe 125 mm the valve size can be Za generally limited to 6 ASA 150 Ibs R F or NW 150 ND 16 In most TANK CEILING cases a perforated pipe will be required for float guiding With a level gauge mounted above a ball or gate valve it must be checked that the float is above the valve before closing the valve Failure to do so will result in damage of float and or measuring wire ZZ PRIMARY BARRIER HOLE OF 10 MM INTERVAL OF 5000 MM Figure 3 Typical gas tanker installation Henri Systems Holland B V Page 8 of 45 HSH 3 Commissioning USER MANUAL FTLG 807 0112 3 1 Spring motor adjustment Next check the correct operation and setting of the spring motor Release the float applying a braking force to the spring motor manually all the way down until it reaches the tank bottom Meanwhile check that
18. eration REED CONTACTS Reference Alarm 1 Alarm 2 Reference open reference closed measuring Alarm 1 amp 2 open alarm closed normal JUNCTIDN 807 Figure 4 Level transmitter and internal wiring Henri Systems Holland B V Page 11 of 45 HSH 3 9 Recommended oils for level gauges Maker 1 Shell Tellus oil T 15 2 Mobil DTE II 3 B P Energol SHF 22 4 Gulf Hydraulic oil A 5 Esso Univis 22 6 Fina Hydran HV 15 7 Elf Hydref 22 8 Total Equivis ZS 15 9 Castrol Hyspin AWH 15 10 Chevron LPS 15 11 Texaco Rando HD Z 12 Idemitsu Daphne Super Hydro X 15 Viscosity Index 159 150 173 140 171 156 182 151 151 153 151 144 USER MANUAL FTLG 807 0112 Pour Point 459 409 549 549 459C 46 40 42 51 51 42 50 Viscosity Flash poin 40 mm2 s 14 0 cSt 154 C 15 8 cSt 165 C 21 3 cSt 165 C 15 8 cSt 160 C 20 0 cSt 196 C 15 0 cSt 180 C 21 0 cSt 190 C 14 7 cSt 174 C 14 8 cSt 165 C 15 0 cSt 160 C 15 0 cSt 150 C 15 4 cSt 178 C Other hydraulic oil types may be used when the following specifications are met Viscosity index gt 140 C Pour point gt 409 Viscosity 409C gt 14 0 cSt Flash point 2 150 C Oil color Clear Oil capacity per level gauge approx 7 L Henri Systems Holland B V Page 12 of 45 HSH 4 Operation USER MANU
19. ety EEx ia IIB terminals 5 R and 4 5 only to be connected to Remote Level Indicator Model AMTG 6 1 and 4 8 7 A2 and 4 5 821 02 cr certified intrinsically safe circuits with the following maximum values for each circuit U 16 V 52 169 mW 0 nF L 0 The sensor output circuits and the alarm output circuits have one connection in common Installation instructions order to prevent voltage and or current addition the intrinsically safe circuits shall be wired such that the separation between the circuits in accordance with EN 50020 is maintained Alternatively if separation is not maintained then the mentioned maximum values Uj and P apply to the combination of all the sensor and alarm circuits together In this case Ihe maximum internal capacitance C 90 nF and the maximum internal inductance 1 100 pH 16 Test Report KEMA No 2087693 MEAN P Ex30 v2 1 Page 2 3 KEMAZ SCHEDULE 14 to EC Type Examination Certificate KEMA 06ATEX0155 X Issue No 1 17 Special conditions for safe use For ambient temperature range and electrical data see 15 The apparatus shall not be used in applications where a high risk of mechanical danger exsists 18 Essential Health and Safety Requirements Assured by compliance with the standards listed at 9 19 Test documentation As listed in Test Report No 2087693
20. evel indicator reference switch or alarm switch not correctly fitted Obstacles in travel range of float Measuring cable broken Measuring cable off the measuring drum Obstacles in float travel range Hand crank not taken off Hand crank not correctly fitted at shaft Weak magnets Check oil level in spring motor comp Measuring cable broken Leaking float Page 14 of 45 HSH Pos Fig peen Plug 5 8 l6 3 9 Spring motor compartment 8 3 Gasket motor compartment 19 3 Bolsmotorcompattmen 14 9 O ring motor side Bolts separation flange 1 Spring lock washer sep flange 13 14 Measuring drum SUS 316 18 19 14 Outer magnet measuring drum 20 14 Housing bearings measuring drum USER MANUAL FTLG 807 0112 7 Parts list 807 series marine level gauges 807 050 807 060 807 082 807 090 0807 09A 807 100 Remane Stainless steel 316 SUS Stainless steel 316 SUS Stainless steel 316 SUS l 807 180 807 190 807 200 21 14 Ball bearings measuring drum 807 210 Henri Systems Holland B V 807 270 807 301 807 290 807 320 807 330 807 340 807 350 807 390 807 400 807 410 807 420 807 450 807 460 807 470 807 480 Complete encapsulated SUS Stainless steel 316 SUS Including float spring 28 Pre tensioned Complete encapsulated SUS Page 15 of 45 HSH USER MANUAL FTLG 807 0112 Key spring motor 807 490
21. float has reached the highest point just about to touch the float stops or mounting flange or just above the valve Hold the level gauge spring motor at this level Slack the fixing screw of the switch Pull out the switch from its fixed position by turning it slightly to the left Bayonet fitting Turn the driving first digit wheel so that the magnet in the last digit wheel is just on the point of turning away from the embedded reed contact Turn the driving digit wheel always in the same direction as if it would be driven by the spring motor for reference and high level spring motor clockwise for low level spring motor anti clockwise Fit the switch in place making sure that the gears are correctly engaged Tighten the fixing screw and check the setting Turn the spring motor so that the float moves up and down For reference and high level the switch must be closed when the float is below the required level setting and open above this point For low level the switch must be closed when the float is above the required level setting and open below this point The maximum setting accuracy is 2 5 mm When the setting is not yet correct slack fixing screw and pull the switch so far out that the gears are just disengaged Turn the driving digit wheel just as many gear teeth as is required observe correct turning direction and fix the switch again Location of the switches inside the spring motor compartment Reference switch appr
22. g cable in meters For factor d the maximum allowable hysteresis has been used For initial adjustment of the level gauge it is recommended to set the local indicator so that the float or displacer is set for average immersion level see float immersion diagram Tankers carrying cryogenic cargoes LNG etc may be fitted with level gauges with Invar 36 nickel steel measuring drum and measuring cables Henri Systems Holland B V Page 7 of 45 HSH 2 Mounting USER MANUAL FTLG 807 0112 2 1 Mounting of level gauges general The mounting flange of the HSH 807 series marine level gauge is compatible to e 6 150 Ibs ASA r f flange e DN 150 PN 16 flange DIN 2502 e 10K DN 150 JIS flange e other flanges such as 6 300 Lbs DN 150 PN 25 40 or JIS 20K DN150 are optional The display window of the local indicator should face aft same as the hand crank of the float hoisting mechanism To have free access to the level gauge internals for maintenance and calibration it is recommended to have a free area with a radius of at least 1 5 to 2 meters around the level gauge Trim or list of the ship has practically no influence on the accuracy of the level gauge 2 2 Liquefied gas tankers 807 LEVEL GAUGE According IMO resolution A 328 IX Q each cargo tank should be fitted with at least one liquid level gauging device Where only one liquid level gauge is fitted it should be arranged so that any n
23. level alarm switches Pos 7 39 measuring range 0 39 m 19 measuring range 0 19 m SPRING MOTOR COMPARTMENT MAIN SHAFT MAGNETIC SEPARATION FLANGE MEASURING DRUM COMPARTMENT E 2 5 EM 5 LAC MAIN SHAFT BEARING HOLEING 0 j o DIL IRAUH HAND CRANK Lifting Eye MEASURING DRUM Figure 2 Two compartment gauge housing Henri Systems Holland B V Page 6 of 45 HSH 1 3 Accuracy USER MANUAL FTLG 807 0112 The accuracy of the 807 series marine level gauges is determined by the following factors a The accuracy of the circumference of the measuring drum The effective circumference of the measuring drum is 600 mm with a tolerance of 0 02 mm b The accuracy of the measuring cable diameter The measuring cable is multi stranded with a central core The diameter has a max tolerance of 0 02 mm c The weight of the suspended amount of measuring cable The measuring cable has a weight of approx 1 3 g m d The hysteresis of the measuring system The hysteresis is the total friction of bearings regulation indicator etc The parts housed inside the spring motor compartment add very little to the hysteresis as they run under optimal conditions under oil i e well lubricated no corrosion influence The measuring drum runs under more severe conditions which require a suitable approach Depending on the type of tanker or application measuring drum b
24. mm OIL DRAIN HAND CRANK Q G Henri Systems Holland B V Fig 2 Layout of main components MAIN SHAFT MAGNETIC SEPARATION FLANGE INNER MAGNET SHAFT I C MAIN SHAFT BEARING HOUSING SEE Fig M amp 12 Hazardous Area Zone 741 Area Zone 0 Area Page 21 of 45 MEASURING DRUM CDMPARTMENT SEE Fig 14 Fig 3 Open view of spring motor compartment Henri Systems Holland B V Page 22 of 45 MARINE INSTRUMENTATION Fig 4 Local indicator reference alarm switches and transmitter Henri Systems Holland B V Page 23 of 45 MARINE INSTRUMENTATION Fig 5 View of spring motor parts Henri Systems Holland B V Page 24 of 45 MARINE INSTRUMENTATION Fig 6 View of hoisting mechanism Henri Systems Holland B V Page 25 of 45 Sel MARINE INSTRUMENTATION Fig 7 View of junction box Henri Systems Holland B V Page 26 of 45 MARINE INSTRUMENTATION Fig 8 Window parts and location Henri Systems Holland B V Page 27 of 45 MARINE INSTRUMENTATION Fig 9 Fitting spring motor compartment Henri Systems Holland B V Page 28 of 45 Fig 10 Fitting separation plate MARINE INSTRUMENTATION Henri Systems Holland B V Page 29 of 45 Sel MARINE INSTRUMENTATION Fig 11 Fitting main shaft 42 4 o e Fee ow Henri Systems Holland B V Page 30 of 45 HSH MARINE INSTRUMENTATION Fig 12 Main shaft parts
25. ox 110 clock position High level switch approx 8 o clock position Low level switch approx 5 o clock position Transmitter approx 12 o clock position Henri Systems Holland B V Page 10 of 45 HSH 3 6 Level transmitter if fitted USER MANUAL FTLG 807 0112 The intrinsically safe level transmitter is designed to provide HSH AMTG series remote level indicators with level information The level transmitter consists of a gear driven rotor disc and three inductive proximity switches The level transmitter does not require adjustments or setting The synchronization between local read out and remote read out is arranged by the reference switch in the level gauge and reference program in the remote level indicator 3 7 Oil filling First fit the spring motor compartment cover fig 3 item 7 making sure that no tools or dirt remain in this compartment Check that the oil drain plug is tightened fig 3 item 11 and fill the spring motor compartment with oil up to the oil fill plug level oil fill plug fig 3 item 11 At this level the oil can be seen through the read out window Close the oil fill plug and fit the measuring drum cover The level gauge is now ready for operation 3 8 Starting up The measuring drum and float are already fitted in the factory and after the adjustment of local indicator and if fitted the reference switch and the level alarm switches the level gauge can be closed and the instrument is ready for op
26. resent either renew or regenerate these The bearings of the level gauge should be checked and if necessary renewed every 5 years At the same time check the measuring cable and float for corrosion AN WARNING AN e Never remove a measuring drum before locking the spring motor Failure to do so will unwind the spring motor and cause severe damage The oil in the spring motor compartment does not have to be drained in order to lock the spring motor Fit the measuring drum in exactly the same position as it was taken out e g with the float at the same level If this is done correctly re adjustment of the level gauge is not required e DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS PRESENT Henri Systems Holland B V Page 13 of 45 HSH 6 Trouble shooting Failure a The level gauge runs irregular The float does not descend after releasing Level gauge indicator suddenly shows erroneous reading Float cannot be hoisted Float returns to cargo level after being hoisted Float is difficult to hoist Float descends too fast after releasing Local indicator shows impossible reading Float submerges in cargo or remains at tank bottom with cargo in the tank Henri Systems Holland B V USER MANUAL FTLG 807 0112 Diagnosis 1 Ne m Dirty measuring drum bearing and or magnet separation cap Dirty measuring drum bearing and or magnet separation cap Valve below level gauge closed Local l
27. the torque output drum fig 5 item 46 rotates anti clockwise facing the spring motor compartment and the spring storage drum rotates clockwise fig 5 item 45 If the float stops during its downward movement before it reaches the tank bottom check that sufficient spring tape is left on the storage drum If this is not the case rotate the torque output drum main shaft 3 revolutions in clock wise direction by hand and lock the spring motor by the engaging the float hoist mechanism While rotating the torque output drum check that the storage drum rotates anti clock wise 1800 mm on the local indicator After the spring motor has been locked rotate the measuring drum in a clock wise direction facing the drum compartment until the float reaches the tank bottom Because the magnetic coupling of the measuring drum provides a counter force to the manually applied rotation force it may be necessary to remove the drum from the shaft in order to prevent too high radial forces on the shaft When the float has reached the tank bottom dis engage the float hoisting mechanism and check that the float is still resting on the bottom Hoist the float and release it once again adjusting the speed carefully by hand The vertical speed should be almost constant 3 2 Local level indicator setting To set the local level indicator the float must be placed at a known level tank bottom liquid level or valve top Compare the known level with the actual rea
28. ticle 9 of the Council Directive 94 9 EC of 23 March 1994 certifies that this equipment has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of equipment and protective systems intended for use in polenGaly explosive atmospheres given in Annex 1 to the directive The examination and test results are recorded in confidential test report number 2087693 Compkanca with the Essential Health and Safety Requirements has been assured by compliance with EN 50014 1997 EN 50020 2002 EN 13463 1 2001 EN 13463 5 2003 EN 13463 8 2003 if the sign X is placed after the certificate number it indicates that the equipment is subject to special conditions for safe use specified In the schedule to this certificate This EC Type Examination Certi amp cate relates only the design examination and tasts of the specified equipment according to the Directive 94 8 EC Further requirements of tne directive apply to the manufacturing process and supply of this equipment These are not covered by this certificate The marking of the equipment shall include the following 1 1 2 G EEx ia c k IIB T4 This cerlificate is issued on 15 November 2006 and as far as applicable shall be revised before the date of o AE A PRERE UAI NRI AER ROE ENA SESO Vn Ol Journal of the Eurcpean Union Page 1 3 togal publication af thus cersticate ond reports is slowed This Certificate may only be
29. tor side 1 5 807 141 21 14 Ball bearings measuring drum 2pcs 807 210 26 18 Measuring wire 2pcs 807 260 27 15 Float set complete 1pcs 807 270 45 5 Spring motor storage drum 1 pce 807 450 61 4 Local indicator Innage 1pce 807 611 62 4 16 Reference or alarm switch 2 pcs 807 620 64 4 Window replacement set 1 807 window 65 8 Gasket window local indicator 2 pcs 807 650 69 17 O ring hoist lock mechanism 1pcs 807 691 71 4 15 Transmitter complete 2pcs 807 710 90 3 Hand crank 1pcs 807 901 7 2 How to order spare parts When ordering spare parts always state type and serial number 7T 3 Tools No special tools are required With the following tools the level gauges can be completely serviced e 1 set of Allen keys metric 1 Allen key 3 mm extra long 140 mm e 1 open ring wrench 10 mm e 1 ring wrench 18 19 mm1 screw driver no 3 e 1 set Philips screw drivers e Multimeter Henri Systems Holland B V Page 17 of 45 HSH 8 Specifications Performance Measuring range Accuracy Repeatability Sensitivity Max working pressure Minimum cargo temperature Maximum cargo temperature Ambient temperature max inclination of 22 50 Materials Gauge head Measuring drum Measuring wire Magnet separation Coupling magnets Float Weight Electrical Sensor output circuits terminal 1 a and 4S 2 b and 4S 3 c and 4S Alarm output terminal 5 R and 4S 6 A1 and 4S 7 A2 an
30. vel gauging system provides standard local digital level read out manual float hoisting and locking automatic float descent control and further possibilities for centralized cargo handling with intrinsically safe level transmission and electronic digital read out integral level alarms and a variety of electronic signal outputs Figure 1 The HSH Float Type Level Gauge 807 Henri Systems Holland B V Page 4 of 45 HSH USER MANUAL FTLG 807 0112 1 1 Level gauge construction and working principle The gauge head of the 807 series level gauge is made of two completely separated and closed compartments The communication between both compartments is indirect by means of a magnetic coupling One of the compartments the so called measuring drum compartment communicates directly with the tank and is thus part of the closed system The measuring drum compartment houses an accurately machined measuring drum on which a flexible multi stranded measuring cable is wound in a fine screw thread like groove The float is fitted to the measuring cable and serves as level sensing element The measuring drum is coupled through a magnetic coupling to the spring motor housed in the second compartment the so called spring motor compartment The spring motor provides a constant torque via the magnetic coupling to the measuring drum in the rotation direction for winding up the measuring cable Under influence of the float weight a counter directed torque is

807-General-Manual_Jan-2012

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