HS-620/630 User Guide QM14 Issue 3
Contents
1. Status Mode 1 4 Measurement Units 2 OPERATING INSTRUCTIONS 2 1 Sensor Connection 2 2 Power On Off 2 3 Key Functions 2 4 Overall Vibration Measurement amp Assessment 2 5 ISO Machine Groups 2 6 Bearing Status Check 2 7 Battery amp Charger oo NANDA NAA HA QW Ww WwW WwW LW 3 THE ISO 10816 3 MACHINE VIBRATION STANDARD 4 BEARING STATUS ASSESSMENT 4 1 Bg Value 4 2 Bv Value 5 TEMPERATURE MODE HS 630 only 5 1 Surface Temperature Measurement p pdt Ne 6 SPECIFICATION 05 7 WARRANTY EN 8 CERTIFICATE OF CALIBRATION EN QM14 Issue 3 HS 620 630 User Guide 1 Overview The HS 620 Vibration Meter Kit is a reliable and easy to use hand held machine condition inspection instrument It provides vibration measurement alarm indication and a bearing status check facility The HS 630 kit provides an additional facility for non contact temperature measurement The meter enables plant maintenance technicians to monitor their machines find potential problems in advance of failure and to ensure machine reliability 1 1 HS 620 630 Kit Contents VBA 20 VBA30 meter unit with lithium battery fitted Hand Held Accelerometer with TNC Connector 80cm cable with TNC to BNC connectors Magnetic Base Vibration Spike 2 x Battery Charger Mains Car Manual Carrying Case 1 2 Overall Vibration Mode The meter can measure vibration Velocity in mm s rms Acceleration in g peak and Displ2. HS 620 630 User Guide Ti x O Q an Oo 9 N N T i Hansford Sensors Excellence in Vibration Monitoring QM14 Issue 3 v HS 620 630 User Guide Certificate of Calibration Model No Serial No Calibrated By Date of Calibration Certificate of Calibration Model No Serial No Calibrated By Date of Calibration HS 620 630 User Guide HS 620 630 Vibration Meter Kit Operating Manual Hansford Sensors Ltd December 2012 The HS 620 Vibration Meter Kit is an ideal low cost entry level vibration monitoring instrument designed for Maintenance Technicians to use on site helping to give protection to important plant machinery The HS 630 adds an easy to use temperature measurement function This document may not be reproduced in any way without the prior written permission of the company QM14 Issue 3 HS 620 630 User Guide HS 620 630 User Guide Certificate of Calibration Model No Serial No Calibrated By Date of Calibration Certificate of Calibration Model No Serial No Calibrated By Date of Calibration HS 620 630 User Guide Certificate of Calibration Model No Serial No Calibrated By Date of Calibration Certificate of Calibration Model No Serial No Calibrated By Date of Calibration HS 620 630 User Guide Contents 1 OVERVIEW 1 1 HS 620 630 Kit Contents 1 2 Overall Vibration Mode 1 3 Bearing
3. acement in um peak to peak When measuring Velocity and on switching to the Hold mode the meter display will indicate an alarm status according to IS010816 3 1 3 Bearing Status Mode The meter measures Bg value in g rms and Bv value in mm s rms which represent the bearing status The lower frequency machine vibrations are attenuated by a 1kHz high pass filter In the Hold mode the meter display indicates the bearing alarm status 1 4 Measurement Units The meters are available in three different configurations for measurement units These are Metric 1 Metric 2 and Imperial The units required must be specified on order see table on page 5 for units used in each mode Metric 1 settings are used throughout the manual QM 14 Issue 3 HS 620 630 User Guide Certificate of Calibration Model No Serial No Calibrated By Date of Calibration Certificate of Calibration Model No Serial No Calibrated By Date of Calibration HS 620 630 User Guide HS 620 630 User Guide 2 Operating Instructions Hansford Sensors Excellence in Vibration Monitoring ae CERTIFICATE OF CALIBRATION Fu BNC connector LCD screen VIB key BRG key We certify that this product has been tested in SEL key accordance with our manufacturing procedures using calibrated equipment traceable to UK Hand Probe national standards to ensure that the product with sensor meets the published specifications Fi
4. be accepted for loss of items or component parts It is expected that the user takes sufficient precautions to safeguard all guaranteed items Hansford Sensors Ltd Artisan Hillbottom Road Sands Industrial Estate High Wycombe Buckinghamshire HP12 4HJ England Tel 44 0 845 680 1957 Fax 44 0 845 680 1958 Web www hansfordsensors com J4 QM14 Issue 3 6 Specifications Bearing Temp Range Laser Guide Distance Range Accuracy Display Temperature Meter Sealing Spike Length Magnetic Base Meter Size Carry Case Size QM 14 Issue 3 HS 620 630 User Guide Constant Current Accelerometer 100mV g Acceleration 0 20gPk Frequency Range 5Hz 12kHz Velocity 0 200mm s RMS Freq Range 10Hz 1kHz Automatic Alarm Check IS010816 3 Displacement 0 2000um Peak Peak Freq Range 5Hz 1kHz Bg 0 20 g RMS Freq Range 1kHz 12 kHz Applies to Bg line amp Bv line Bv 0 200 mm s RMS Freq Range 1kHz 12 kHz Automatic Alarm Check for BG and BV Rule of thumb 20 C to 120 C or 5 F to 250 F HS 630 only Red A 650nm lt 1mW IEC 60825 1 compliant HS 630 only For Temp measurement 0 to2 metres HS 630 5 LCD Lithium rechargeable battery 3 6V 1700 mAh Recharge time 3 hours gt 48 hours continuous operation Operation 10 C to 50 C Storage 20 C to 60 C IP54 75mm Diameter 25mm H 17mm pull s
5. ce requirements and costs can be e e assessed reliably on machine commissioning For example if levels of AAA TTT 3mm s rms are measured for a new machine it is likely to require high moe dt III maintenance activity The specific requirement of this is dependant on 1000 the machine design and the advice of the machine manufacturer should Shaft Speed RPM be sought Fig 3 Bg Levels 10 eS QM14 Issue 3 QM14 Issue 3
6. ent vibrations caused by imbalance or mms Rigid Flexible Rigid Flexible misalignment A practical problem arises in gearboxes and other machines where steel meets steel in which vibrations are produced in the same frequency range as the bearing vibrations For this reason bearings should not normally be exchanged on the basis of a high bearing value only A high bearing condition value is an indication that further analysis is required and an FFT analyser will indicate if there are frequencies corresponding to the calculated bearing frequencies 4 1 Bg Value Bg value is vibration acceleration within 1 12kHz in units of g RMS The reason for using acceleration is that it gives larger values at higher frequency than velocity measurement The rule of thumb assessment of Bg is shown in the chart on page 10 Fig 2 ISO 10816 3 Vibration Levels The machine mountings affect the resonances related to the basic running speed of the machine Machines with rubber or spring mountings often vibrate at low speeds following start up and as the speed increases the vibration level is reduced Such a machine is considered to be flexible mounted 6 Modern high speed machines having flexible bearing supports can also mete be considered as flexible mounted even though not mounted on rubber AT a or springs REA nt A great advantage of using proper vibration measurements and pe a a a an standards is that future maintenan
7. etric 1 Metric2 Imperial Bg LE rms m sec rms grms Bw m sec rms mm sec rms infsec_rms VIB key Press VIB to toggle between Measure and Hold modes The Hold mode is indicated by an H in the display In the BRG mode Press VIB to enter the Overall Vib mode BRG key In the Overall Vib mode press BRG to enter the Bearing Status mode In the Bearing Status measurement mode press BRG to toggle between this and the Bearing Status Hold mode indicated by an H on the display When the overall velocity reading is in the Hold mode the meter display indicates the vibration alarm status of the machine according to IS010816 3 as defined in section 3 When the BRG velocity or g reading is in the Hold mode the meter display indicates the bearing status according to a rule of thumb assessment as defined in section 4 QM14 Issue 3 HS 620 630 User Guide 7 Warranty All goods are guaranteed against defects in materials and workmanship subject to specific exclusions for a period of 36 months from the date of purchase In the event of failure within 36 months of original purchase the company will promptly repair or replace the defective components without charge Specific exceptions rendering the Warranty void are If repair is attempted by unauthorised persons or agents or if the product has been used for purposes for which it was not intended and or subjected to abuse or wilful neglect No liability can
8. gure 1 The VBA20 2 1 Sensor Connection Fit the vibration sensor to the machine measurement position via a Model No HS 620 630 Serial No magnetic base or stud Connect the sensor cable to the BNC connector nel on the meter When a satisfactory sensor connection is made the sensor fault icon on the LCD display will disappear Conversely the sensor fault icon will appear if the meter detects a poor sensor connection Calibrated By Date of Calibration 2 2 Power On Off Power On Push SEL key only for 2 sec The meter defaults to the overall vibration velocity range Power Off Push two keys SEL BRG or SEL VIB for 1 sec Hansford Sensors Ltd Artisan Hillbottom Road Sands The meter will power off on release of the keys Industrial Estate High Wycombe Bucks HP12 4H tel 44 0 845 680 1957 The meter will automatically power off after 3 minutes of no key tion fax 44 0 845 680 1958 Se web www hansfordsensors com 15 QM 14 Issue 3 QM 14 Issue 3 HS 620 630 User Guide 2 3 Key Functions SEL key Press SEL to switch on the meter In the Overall Vibration mode press SEL to toggle through the measurement parameter options Table 1 OVERALL VIBRATION MODE Measurement units specified on order i Vel Vibration velocity mm sec rms mm sec rms Acc Acceleration E pk msec pk Disp Displacement um pk pk pm pk pk mil pk pk Table 2 BEARING STATUS MODE Measurement units _M
9. ly sleeve bearings speed 120RPM 15000RPM Group 2 Medium size machines rated power 15KW lt P lt 300KW Electrical machines with shaft 160mm lt dia gt 315mm Normally element bearings Speed above 600RPM Group 3 Pumps with multi vane impeller and with separate driver centrifugal mixed flow or axial flow with rated power above 15KW Group 4 Pumps with multi vane impeller and with integrated driver centrifugal mixed flow or axial flow with rated power above 15KW Support Class R Rigid Mount F Flexible Mount 6 QM14 Issue 3 HS 620 630 User Guide 2 6 Bearing Status Check Fix the sensor directly to the bearing housing as close to the bearing as possible Note that valid high frequency readings are unlikely to be measured using hand pressure and the spike Press the BRG key to enter the Bearing Status mode Press the SEL key to select either Bg g RMS or Bv mm s RMS When the bearing status reading has settled press the BRG key to enter the hold mode H The bearing status reading is then held and the rule of thumb alarm status displayed Press the SEL key to toggle through and select the appropriate speed range of the bearing shaft rpm lt 500 rpm lt 1000 rpm lt 2000 rpm lt 5000 rom lt 10000 The meter will then indicate either a tick icon for OK a single bell for vibration alert or two bells for danger The meter makes the assessment based on the rules of thumb defined in secti
10. on 4 2 7 Battery amp Charger The Vibration Meter is powered by an internal rechargeable Lithium lon battery which can operate for 48 hours continuously following full charge The battery condition is indicated by an icon at the top right of the meter display The battery charger supplied requires 3 hours to fully charge the battery An LED on the charger indicates the charge status being orange when charging and green when charging is complete QM14 Issue 3 HS 620 630 User Guide 5 1 Surface Temperature Measurement The temperature sensor measures the average temperature in a circle of diameter one eighth of the distance between the surface and the sensor For example when the meter is held 1m from a surface the sensor will respond to a 125mm spot diameter on the surface Thus the measuring distance will define the size surface to be measured The maximum recommended distance from surface to sensor is 2m and hence the maximum spot diameter is 250mm The measurement is made as follows Switch on the meter using the SEL key Press the F C for the temperature mode Aim the laser beam at the surface to be measured at a suitable distance from the surface remembering that the temperature sensor spot diameter is one eighth of the distance ie not the laser spot size The temperature reading can be toggled between F and C using the SEL key Ambient temperature is indicated at the bottom left of the display Exit the tempe
11. or Axial flow pumps Electric Generators excluding Hydro electric or pump stations Electrical motors of all types Blowers or fans The standard classifies machine groups as in section 2 5 and defines Vibration levels for each group shown in the chart on page 9 as follows Green levels expected for a new machine Yellow levels considered as acceptable for long periods Amber levels not acceptable for long periods Red levels likely to cause machine damage It further classifies machines as being either rigid or flexible mounted with the flexible mounted machines being allowed higher vibration levels The meter indicates a tick box for levels in the green and yellow sections and uses the lower limit for the amber sections and the red sections in its vibration assessment QM 14 Issue 3 HS 620 630 User Guide HS 620 630 User Guide 4 Bearing Status Assessment When the rolling elements move inside a bearing broadband noise and vibration is generated This increases if the bearing is not properly Industrial machines with power above 15kW and lubricated or is overloaded due to misalignment or damaged surfaces nominal speeds between120 15000 r min The bearing vibration Bg or Bv measured by the meter is the RMS value of all high frequency bearing vibrations between 1kHz and 12KHz Unit Group 1 and 3 Group 2 and 4 The vibrations below 1kHz are suppressed in the Bg and Bv modes to Lu 5 eliminate the measurem
12. rature mode by pressing the Vib or Brg key 10 QM14 Issue 3 HS 620 630 User Guide 4 2 BV Values Bv measurement is a long established method for detecting bearing faults which gives reliable indication of bearing condition in 80 90 of cases The rule of thumb assessment used in the meter is as follows BVs1mm s Healthy bearing correctly greased BV 1 2mm s Possibly damaged or un greased bearing BV gt 2mm s Bearing seizure likely 5 Temperature Mode HS 630 only The HS 630 uses a thermopile infra red sensor to indicate temperature in Deg C or Deg F on the display An alignment laser beam is provided to indicate the area where the temperature is being measured Ambient temperature is also indicated in the bottom left of the display Integral cable ia Laser Beam BNC connector LCD screen TEMP key VIB key SEL key BRG key Hand Probe with sensor Fig 4 HS 630 caion Laser radiation Do not stare into the Laser beam 11 QM14 Issue 3 HS 620 630 User Guide 3 The IS010816 3 Machine Vibration Standard Industrial machines covered by the IS010816 3 standard include Steam turbines with nominal power less than 50MW Steam turbines with nominal power above 50MW with speeds less than 1500rpm or above 3600rpm ie excludes machines included in 1S010816 2 Rotating compressors Industry gas turbines with nominal power less than 3MW Centrifugal Mixed flow
13. trength 12Kg L 115mm x W 70mm x D 25mm W 342mm x D 265mm x H 80mm Full kit including carry case 1 25 Kgs 0 8m other lengths available 13 HS 620 630 User Guide 2 4 Overall Vibration Measurement amp Assessment At switch on the meter defaults to the Velocity measurement mode with the units mm s rms indicated at the bottom right of the display If required press SEL to select acceleration or displacement Note that no vibration assessment is available on these ranges When the vibration reading has settled press VIB to move to the Hold mode An H icon is displayed In the velocity range the meter will then indicate either a tick icon for OK a single bell for vibration alert or two bells for danger The meter makes this assessment depending on the vibration level and one of the four machine group options selected using the SEL key The machine groups are defined in 1 010816 3 and the meter categorises these as 1SO18 amp 3 R 1SO18 amp 3 F ISO28 amp 4 R ISO2 amp 4 F R and F refer to rigid and flexible machine mounting respectively A label on the back of the meter gives details of the 1S010816 3 machine groups The user can refer to this to confirm the appropriate group number for the tested machine The information contained is as follows in section 2 5 2 5 ISO Machine Groups Group 1 Large machines rated power above 300KW Electrical machines with shaft dia gt 315mm Normal
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