ANALOX 7000 Relative Humidity Monitor User Manual
Contents
1. looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual Analox Sensor Technology Ltd 15 Ellerbeck Court Stokesley Business Park North Yorkshire TS9 5PT T 44 0 1642 711400 F 44 0 1642 713900 W www analox net E info analox net ANALOX 7000 Relative Humidity Monitor User Manual CONTENTS PTET GUNG HO e ee sissies nce deco tat iocenn cele S E E tiene aisnd auiedriiedaeeeie 3 CAMO PANO orones EEE EEE EEEE E EE EREE EEEE EEEE EAE EEEE EEE E E EEEE OREN EEEE 4 ALE OPO 6 eaa E E E E AE E E E E ee ee 5 AA S E O e en E E EEE E EE E ERE 5 BALOI BACKUP oaa aea E E N 6 AE IE KENE A A AAO N 6 daelen e a IAE E cece A ei eo eee A A A crs pre E EE E neces 6 Rear Panel Connections ace sccecsocstenensrasnsredacrenaecinndatatedacnseindueroasiedaxmdaied naeentiedeeesamednteeenedernadins 7 FO WET SOON eea EE EE EE EE E EE E 7 APAT OGO eames ete eerie ne ree E ee T ARG OY E E E EE ee 8 Repar ANd SSC Sao ccpsnct sane E E 8 SPS CINCATION EECC 4 251 0d sce E E E EE E E EEE EEE E 9 Specification Mechanical a nannannannannannnnnnnennnnrnnnnnnnnnnrrrrrrrnrrnrrnrnnrnrrerrnrrnnrnrrnrnnno 10 DISPOSE E E A E E E T E E 11 Document Ref 7KO 800 02 November 2010 Page 1 ANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual WARNING These instructions should be read and understood by all individuals who will be responsible for operation of this A2. Height Width Centered on cut out Operating Temperature Storage Temperature Relative Humidity ANALOX 7000 Relative Humidity Monitor User Manual 245mm 129mm 107mm 2kg 245mm 133mm 120mm 2kg 112mm 102mm 4 x 10mm 122 5mm 91 4mm O to 60 C 40 to 85 C 95 at 40 C Non Condensing Document Ref 7KO 800 02 November 2010 looking after the air YOU breathe Page 9 ANALOX 7000 Relative Humidity Monitor User Manual Disposal il According to WEEE regulation this electronic product can not be placed in household waste bins Please check local regulations for information on the disposal of electronic products in your area Document Ref 7KO 800 02 November 2010 Page 10 looking after the air YOU breathe
3. If droplets of moisture are present on the inside wall of the Capsule they should be removed using a tissue Fit the Capsule over the detector assembly and screw down until the 0 ring makes a good seal Within 15 minutes the atmosphere inside the Capsule should stabilise to within 2 of 75 RH at 20 25 C For greater accuracy the Capsule should be left in place for several hours when the reference will reach within 0 25 of 75 RH When the reading is steady adjust the CAL control on the instrument front panel until the LED reads 075 0 Turning the control clockwise will increase the reading This completes the calibration process Remove the 75 Ref Capsule again taking care not to touch the detector assembly and immediately replace the stopper cap on the Capsule Refit the detector guard grid on the Sensor assembly Reference Accuracy When new the Zero capsule should provide a reference of 0 RH to 0 25 after 10 hours or 1 1 25 after only 10 minutes The 75 RH capsule should be within 2 of 75 RH at 20 25 C within 2 minutes With age and depending on the time exposed to atmosphere both capsules will gradually drift toward the ambient humidity in which they are used Each capsule can withstand exposure to atmosphere in excess of 1 hour without noticeable error equivalent to about 350 operations If it is suspected that the capsules are no longer active a simple test is to slightly warm the capsule when i
4. in the event of external power failure External power status and internal battery condition are indicated by an LED on the front panel Calibration To carry out calibration of the instrument the user will require two reference Capsules a 0 RH Ref and a 75 RH Ref 1 Zero Adjustment Locate the detector guard grid on the end of the sensor unit and CAREFULLY unscrew and remove the guard Avoid touching the delicate detector element within the guard Unscrew the stopper from the end of the ZERO Capsule and carefully fit the capsule over the detector assembly and screw down until the 0 ring makes a good seal Within about 10 Minutes the atmosphere inside Document Ref 7KO 800 02 November 2010 Page 2 WANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual the capsule will have stabilised to within 1 of true Zero If greater accuracy is required it will be necessary to wait several hours preferable overnight after which the reference will reach within 0 25 of true Zero Using the trimming tool provided with the instrument or a small instrument screwdriver adjust the ZERO control until the display reads 000 0 Note The Low alarm will trip during the Zero setting process Taking care not to touch the detector remove the 0 capsule and immediately replace the stopper on the capsule Span Adjustment Unscrew the stopper from the 75 RH Capsule
5. circuitry which requires special test equipment to ensure correct internal set up and calibration Internal repairs or adjustments by the user are therefore NOT recommended Analox Ltd WILL NOT ACCEPT RESPONSIBILITY FOR ANY EVENTS OCCURING AS A RESULT OF UNAUTHORISED ADJUSTMENTS OR REPAIRS TO THE INSTRUMENT Document Ref 7KO 800 02 November 2010 Page 7 looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual Specification Electrical Range 0 0 100 0 Resolution High 0 1 RH Low 0 1 RH Accuracy 1 of readout Temperature Effect 0 1 of readout per C Power Supply 85 to 264 VAC 47 to 63 Hz Option without switching 12v to 32v DC Max Ripple 1v Outputs O 1 Volt for chart recorder 4 20mA internally powered Optional Extra Battery Backup 5 Volt 1 4aH Nickel Cadmium Backup time Approx 1 hour Alarm Relays 2 x Single Pole Changeover Rated 7 amp 240v AC 30v DC Configurable to be energised or De energised when in Non Alarm condition Document Ref 7KO 800 02 November 2010 Page 8 ANALOX looking after the air YOU breathe Specification Mechanical Dimensions Rack Mounted Version Depth Overall Height Overall Width Overall 1 4 19 x 3U Rack Weight Panel Mounted Version Environmental ANALOX Depth Overall Height Overall Width Overall Weight Panel Cut out Aperture Height Width Mounting Centres Holes
6. ed from n internal nominal 24 Volt supply and can operate into a load from 50 Ohms to 500 Ohms Alarm Relays Two relays can be fitted as an optional extra these operate in conjunction with the HI and LO alarms The relays have single pole changed over contact arrangements rated to switch up to 7 amps 240v AC or 30v DC The relays may be configured to be energised or de energised when the instrument is in a non alarm state If the relays are configured to be in a normally energised state this will provide a Fail Safe facility in that a total power failure will cause the relays to release and signal an alarm condition However the extra power drawn by the relays being energised for most of the time will reduce the time for which the Instrument will operate on Battery Back up Contact arrangement is shown on the rear panel Instruments normally leave the factory with the relays configured to ENERGISE IN ALARM conditions Repair and Service Apart from periodic Sensor calibration the Instrument has been designed to provide long trouble free service However in the event of a fault condition arising contact your local distributor or Analox Ltd whose Address telephone fax and email appear on the front page of this handbook Document Ref 7KO 800 02 November 2010 Page 6 WANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual The Instrument contains complex precision
7. efer to the specifications on Page 1 of this handbook The Frame mounting version should be inserted in a suitable rack and secured by the 4 corner screws and bushes supplied with the Instrument Refer to connection details below When fitting the Panel mounted version the bushes should be left attached to the instrument as supplied and the whole assembly inserted into the panel easing the bushes into the 10mm holes Tightening the 4 screws will expand the bushes locking them into the panel If the instrument is subsequently removed from the panel it is only necessary to remove the screws the bushes should remain captive in the panel Rear Panel Connections All Inputs to and outputs from the Instrument are connected via various sockets and terminals on the rear panel of the Instrument All connections are identified by labels on the rear panel but are repeated here for convenience Power Supply Power for the Instrument may be derived from 1 of 2 options 1 AC Power in the range 85 to 264 VAC 47 to 63 Hz and connected via a standard IEC 3 pin plug socket A suitable lead is supplied with the Instrument Note that NO voltage selection is required when using this input the instrument will operate from any voltage within the stated range The fuse for this power input is mounted in the rear panel and is rated at 1 Amp T type 2 Low Voltage DC in the range 12v to 32v with a ripple not exceeding volt and connected via the batt
8. ery charger type connector or the 2 way screw terminal type connector THE LOW VOLTAGE D C SUPPLY SHOULD BE EXTERNALLY FUSED at a rating of 1 Amp using a T Document Ref 7KO 800 02 November 2010 Page 5 WANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual type delay fuse Note that connection polarity is important when using the DC input Signal Inputs and Outputs All signal inputs and outputs are made to removable screw terminal plugs The main connector is located down the right side of the rear panel when viewed from the rear Several signal input options are fitted to the Instruments In the case of the Relative Humidity Model 7000 Instrument which uses the 4 20mA Input the sensor should be connected to terminals 14 and 18 Pin IB is the sensor excitation voltage and should be connected to the positive terminal of the sensor NOTE Ensure that there is NO LINK between terminals 15 and 16 this is only fitted when the instrument is used with a voltage input Other signal inputs are not used on the 7000 Instrument Two Analog outputs proportional to the measured input signal are available from the Instrument Pin 8 provides 0 1 Volt representing 0 100 RH Pin 9 provides a 4 20 mAmp current representing 0 100 RH Pin 7 is the Common connection for both outputs The Voltage output should NOT be connected to a load less than 10 000 Ohms The Current output is power
9. hilst the instrument was unattended The alarms have a built in Hysteresis of approximately 0 25 RH to overcome nuisance triggering when measuring near the set points This means that if a high alarm occurs with a set point of 75 then having been acknowledged by pressing the MUTE button the alarm will not clear until the humidity level drops below 74 75 Alarm Setting Before any Adjustments Are made to the SET ALARM controls the operator should release the locks on the knobs This is done by moving the small lever located at the edge of the control until the knob turns freely After adjustment the locks should be reset in order to prevent accidental movement The SET HI SET LO toggle switch is normally biassed to its central position to read the measured Oxygen level The high alarm trip point is set by moving this switch upward and adjusting the SET HI ALARM control knob until the desired HI ALARM trip level is displayed The Low alarm trip point is set by moving the switch downward and adjusting the SET LO ALARM control knob until the desired level is displayed If the operator only requires to check the currently set alarm points this may be done by just pressing the SET HI SET LO switch to the appropriate position and reading the levels on the LED Display Battery Backup If the external power supply to the Instrument fails the power supply circuitry in the instrument will automat
10. ically change over to the internal battery if fitted When the instrument is being driven by its internal battery the green STANDBY LED on the front panel will be lit and will remain on until external power is restored The internal battery will provide normal operation for approximately 1 hour When the battery has been discharged to such a level that instrument operation below this level would not be reliable then a trip circuit will turn off the complete instrument and indicate this state by flashing the green STANDBY LED at approximately 1 second intervals Document Ref 7KO 800 02 November 2010 Page 4 ANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual Interference Whilst all reasonable precautions have been taken within the Instrument circuitry and the case is RF screened it is still possible in common with other instruments that very strong local Radio Frequency fields could cause interference This will show up as erratic readings on the LED Display Where possible RF sources such as Portable Radio Transmitters or Telephones should not be operated very close to the instrument Installation The 1000 Range of Analox Instruments are available in two forms 1 Suitable for insertion into a 19 Rack Frame occupying of a standard 3U Frame 2 Suitable for direct mounting in an existing instrument panel For details of dimensions cut outs and mounting centres r
11. nalyser The actions taken as a result of the measured values must be in strict accordance with the Company and Government Regulations Introduction The ANALOX 7000 Relative Humidity Monitor provides a continuous digital display of RH in the ambient gas in the area of the sensor unit The instrument displays the measured value on a 4 Digit red LED configured to read over the range 0 0 to 100 0 The sensor assembly incorporates a Variable capacitance type Detector together with the necessary electronic circuitry to produce a 4 20 mAmp output signal proportional to the measured RH The Instrument is easy to calibrate using the ZERO and CAL adjustments on the front panel User adjustable high and low audio visual alarms together with relays are fitted as standard and these may be adjusted over the full range of the instrument The relay outputs are available on the Instrument rear panel Two power supply options are fitted on all instruments as standard input 1 is a standard IEC 3 pin connector for ac power in the range 85 to 264 VAC 47 to 63 Hz WITHOUT switching or selecting Input 2 is a standard co axial battery charger type connector or a 2 way screw terminal type connector for low voltage power input in the following range DC 12v to 32v Note Polarity of connection of DC is Important The internal power supply unit also incorporates a re chargeable nickel cadmium battery which provides up to 1 hour of normal operation
12. t is fitted to the sensor grasping tightly in the hand is usually sufficient If still active the reading will increase slightly and then recover If it is no longer active the reading will decrease It is estimated that the capsule life will exceed 1 year in normal use if care is taken to replace the stoppers immediately after use Replacement Calibration capsules are available from Analox Ltd Part Number SA1P16RH Document Ref 7KO 800 02 November 2010 Page 3 WANALOX looking after the air YOU breathe ANALOX 7000 Relative Humidity Monitor User Manual Alarm Operation If an alarm condition occurs the internal audible buzzer will sound intermittently and the yellow HORN LED will flash thereby identifying which instrument is causing the alarm The appropriate red HI or LO LED will indicate the alarm level The audible alarm can then be silenced by pressing the MUTE button this action will also turn off the yellow HORN LED If the reading is still in an alarm condition the red HI or LO LED will continue to flash until the measured level returns within the normal band The red LED will then turn off If an alarm condition occurs and the measured value then returns to normal before the MUTE button is pressed then the audible and visual alarms will continue to be active until the MUTE button is pressed This facility allows the operator to be aware of any alarm occurrence w
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