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HygroTrace Moisture Transmitter

21

September 2007

Node ID

Note:

If more than one

HygroTrace

is on the RS485 network,

each unit must have a unique ID.

To change the node ID, select

Node

ID

on the

Comms Menu

, then press

Enter

and the following screen

appears:

Use the arrow keys to change the
node ID value. Press

Enter

to save

(or

Cancel

to keep the previous

value), and return to the

Comms

Menu

.

Test

To test the serial connection over
RS485, select

Test

and press

Enter

.

The

HygroTrace

will transmit a

short message, “

HygroTrace Comm

Test - Node 16

”, over RS485 for

testing the serial connection.

To return to the

Main Menu

, press

Cancel

.

Service

- has limited access. The service passcode is required.

For a description of the service menu, see

Service

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Содержание 916-102A3

Страница 1: ...GE Sensing HygroTrace Moisture Transmitter User s Guide ...

Страница 2: ...e Moisture Transmitter User s Guide 916 102A3 September 2007 The HygroTrace Moisture Transmitter is a GE Panametrics product GE Panametrics has joined other GE high technology sensing businesses under a new name GE Sensing ...

Страница 3: ...es that the equipment was defective the warranty period is one year from delivery for electronic or mechanical failures one year from delivery for sensor shelf life If GE determines that the equipment was damaged by misuse improper installation the use of unauthorized replacement parts or operating conditions outside the guidelines specified by GE the repairs are not covered under this warranty Th...

Страница 4: ...you to send your instrument to a service center it must be shipped prepaid to the authorized repair station indicated in the shipping instructions 3 Upon receipt GE will evaluate the instrument to determine the cause of the malfunction Then one of the following courses of action will then be taken If the damage is covered under the terms of the warranty the instrument will be repaired at no cost t...

Страница 5: ...ng the HygroTrace 9 Keypad Features 9 The Default Display 10 Unlocking the Keypad 11 Accessing the Menus 11 Entering Numeric Values 12 Setting Up the Transmitter 13 Display 13 4 20 Analog Output and Error Reporting 14 Outputs 15 User 18 Communications 20 About 22 LOCK 22 Menu Item Descriptions 24 Specifications 26 General 26 Electrical 27 Mechanical 27 Moisture Sensor 28 Certification 28 Appendix ...

Страница 6: ...o dry situations The technique applies a temperature pulse to dry the sensor Then the re adsorption rate is measured while holding a constant sensor temperature This measurement is proportional to the moisture concentration in the sample gas As a result the HygroTrace offers the sensitivity and response time needed to effectively measure parts per billion levels of moisture Installation Sample Sys...

Страница 7: ...sample system If possible use stainless steel material for all wetted parts The transmitter should be installed perpendicular to the sample inlet For dimensions and other requirements see Specifications on page 26 Note A typical sample system for the hygrometer will use VCR components Note At least 5 feet of 1 4 tubing if vented to the atmosphere should be installed on the outlet to prevent back d...

Страница 8: ...he following procedure CAUTION No maintenance of the sensor can be performed in the field Accessing the sensor chamber will break the VCR seal and should be done only at the factory To install the transmitter refer to Figure 2 below and use a wrench to thread the female 1 4 fittings of the sample system or process line onto the 1 4 male VCR fittings of the tee sample cell configuration Figure 2 Hy...

Страница 9: ... factory for assistance Note If cables need to be lengthened refer to Table 1 on page 5 to splice an extension onto the existing cable Connect positive to positive and negative to negative Use the following steps to wire the transmitter to the system 1 Align the red dot with the red mark see Figure 3 below and push the connector on the transmitter cable into the mating connector on the transmitter...

Страница 10: ...tion of the leads in the factory supplied cable 3 Trim any unused leads back to the outer cable jacket in order to remove the bare tinned wire and prevent accidental short circuits The HygroTrace is now ready for operation Note To remove the probe cable pull back the spring loaded sleeve and pull the cable out of the connector Table 1 Cable Lead Connections No PC Lead Connection Description Red 24...

Страница 11: ...e Moisture Transmitter Figure 4 Standard Wiring Connections ref dwg 702 684 RED BLACK ORANGE BLUE 24V 1 AMP 4 20mA POWER METER SUPPLY WHITE GREEN COMMON RS485 RS485 RS485 TO RS232 CONVERTER RS232 TO PC CABLE BRAID SYSTEM GROUND ...

Страница 12: ... factory for guidance Use the following steps to wire the transmitter to the system 1 Align the red dot with the red mark see Figure 3 on page 4 and push the connector on the transmitter cable into the mating connector on the transmitter module Make sure the pins are properly aligned Secure the connectors by pushing the cable connector until it locks in place 2 Using the flying leads at the other ...

Страница 13: ...ote To remove the probe cable pull back the spring loaded sleeve and pull the cable out of the connector Powering Up After the HygroTrace is wired as described in the previous sections power may be applied to the unit The transmitter takes up to 60 seconds to initialize and begin normal operation If the sensor has been exposed to ambient conditions of less than 10 RH for less than 72 hours the Hyg...

Страница 14: ...as only six keys four arrow keys a Cancel key and an Enter key Use the arrow keys to navigate among menu choices and to increment decrement numeric entries Use the Cancel key to cancel a numeric entry change or exit a menu Use the Enter key to accept a numeric entry or select a menu option Cancel Left Up Down Right Enter 8 9 8 9 ...

Страница 15: ...sence of an error this region is blank Errors that effect the quality of the measurement e g heater failure are indicated in ALL CAPITAL letters Warnings that indicate problems detected with the measurement are indicated in Mixed Case letters Refer to Table 3 below Table 3 Warning Error Messages No Label Type Description 0 Status OK No Errors detected 3 Sns Ovr Rng WARN The calculated PPBv value i...

Страница 16: ...he keypad press Cancel Enter Cancel in sequence Accessing the Menus After successfully unlocking the keypad the HygroTrace will display the Main Menu see Figure 7 on page 12 Use the arrow keys to highlight the menu item desired Refer to the Menu Map Figure 9 on page 23 Press Enter to select the highlighted item Many menu items will display another menu Use Cancel to return to the previous menu pag...

Страница 17: ... a combination lock style of entry Use the left arrow key and right arrow key to select the digit to change The digit selected will be indicated with a Use the up arrow key and down arrow key to increment or decrement the digit Note If incrementing or decrementing a digit would cause the numeric value to exceed its allowable range maximum minimum value the digit will not change Press Enter to save...

Страница 18: ... lower right corner indicates that the screen is locked To unlock the screen press Cancel Enter Cancel Note In most instances use the Enter key to save an entry and or move ahead to the following screen use the Cancel key to reject an entry and or return to the previous screen Display When the screen is unlocked the Main Menu appears with several options To set up the display select Display and pr...

Страница 19: ...tion transmitter was not programmed with calibration data Out of Range measurement cannot be determined with the given calibration These faults will be indicated by a 21 1 mA signal Heater Fail Low heater failed to reach the operating setpoint Heater Fail High heater exceeded its operating limit Limits are taken from the NAMUR Recommendation NE 043 Measurement is valid from 3 8 mA to 20 5 mA Fault...

Страница 20: ...er A screen similar to the following appears Use the arrow keys to change the output value Press Enter to save or Cancel to keep the previous value and return to the Output Menu Recorder Span To specify the ppb reading equivalent to 20 mA select Rcd Span and press Enter A screen similar to the following appears Use the arrow keys to change the output value Press Enter to save or Cancel to keep the...

Страница 21: ...ss Cancel the unit returns to the previous screen and no change is made to the 4 20mA calibration If you select YES the following screen appears to adjust and calibrate the 4 20mA signal With Trim Zero highlighted to adjust the 4 mA output from the factory default press Enter and a screen similar to the following appears Note The HygroTrace will attempt to output exactly 4 00 mA The operator shoul...

Страница 22: ...dicator and enter that value in the following screen Use the arrow keys to change the output value Press Enter to save or Cancel to keep the previous value and return to the Recorder Trim menu Press Cancel twice to return to the Main Menu Test To force the 4 20 mA output to a specified percent of scale select Test on the Output Menu and press Enter A screen similar to the following appears Use the...

Страница 23: ...value select PPB Offset press Enter and the following screen appears Use the arrow keys to enter the PPB offset desired press Enter and the screen returns to the User Settings Menu Clear PPB Offset To clear the PPB offset entered above select Clear PPB Offset and press Enter The following screen appears Press Cancel to return to the Main Menu or proceed to the next option Select YES or NO and pres...

Страница 24: ...he dry down cycle must be manually started and stopped by the user General rule of thumb 72 hours 10 RH or 24 hours 40 RH This sensor drying procedure can be repeated following prolonged exposure to ambient moisture conditions This will ensure the highest accuracy for moisture measurement Note When in Dry Down mode the unit will report a fixed output of 20 5 mA the maximum valid measurement When r...

Страница 25: ...and return to the previous screen Note If you pressed Enter the Sensor Dry Down has ended Communications Baud Rate To change the baud rate select Comms on the Main Menu press Enter and the following screen appears Select Baud Rate and press Enter A screen similar to the following appears Use the arrow keys to select a new baud rate and press Enter The number at the top right side of the screen cha...

Страница 26: ...ys to change the node ID value Press Enter to save or Cancel to keep the previous value and return to the Comms Menu Test To test the serial connection over RS485 select Test and press Enter The HygroTrace will transmit a short message HygroTrace Comm Test Node 16 over RS485 for testing the serial connection To return to the Main Menu press Cancel Service has limited access The service passcode is...

Страница 27: ...n and press Enter A screen similar to the following appears To return to the About HygroTrace menu press Cancel To access up time information select System Status and press Enter A screen similar to the following appears To return to the About HygroTrace menu press Cancel To access software version information specific to the unit select Software Versions and press Enter A screen similar to the fo...

Страница 28: ...Trim Test Trim Span Trim Zero Reset Trim 1200 2400 9600 Test Node ID Baud Rate 38400 19200 57600 Service Update Dump Erase Params 60 C 150 C Heater Test Cal Data 50 C 100 C 190 C Resume OFF Reboot About LOCK User passcode required Notes User PPB Offset ID Service passcode required Contact factory for assistance Coeff A Coeff B ...

Страница 29: ...orce the 4 20 output to a specified percent of scale User User passcode required 1 PPB Offset Enter PPB Offset 2 Clear PPB Offset Clear PPB Offset 3 Sensor Dry Down Dry the Sensor Comms 1 Baud Rate Specify the data rate for RS485 communications 2 Node ID Specify the PanaView Network Node ID 3 Test Force meter to transmit an ID message for test purposes Service Service passcode required 1 Update Up...

Страница 30: ...Change the calibration data a Bulk Limit Set the bulk limit b Cal Curve Set a calibration point and edit PPB and ZH values c Extrapolation Set coefficient A and or B 5 Reboot Reboot and return to the initial screen About Display Product Copyright and Version information LOCK Lock the keypad ...

Страница 31: ...n Process Gas Temperature Range 14 F to 95 F 10 C to 35 C Storage Temperature 40 F to 158 F 40 C to 70 C Operating Temperature 14 F to 95 F 10 C to 35 C Warm Up Time Meets specified accuracy within 24 hours after sensor exposure 72 hours 25 C and 60 RH Calibrated Uncertainty 77 F 25 C 20 of reading or 5 ppbv whichever is greater Response Time Less than 20 min for 95 of 25 ppbv step change ...

Страница 32: ...D Display of primary measurements and diagnostics Mechanical Sample Connection In line flow male VCR process connection Sample Flow Rate 1 to 4 3 SCFH 0 5 to 2 SLM Operating Pressure 0 10 psig 0 to 0 69 bar Proof Pressure 3000 psig 207 bar Enclosure Aluminum construction black color powder coated finish Overall Dimensions H x W x D 7 3 in x 4 6 in x 2 5 in 185 mm x 117 mm x 63 5 mm Weight 2 5 lbs ...

Страница 33: ...ch sensor is individually computer calibrated against known moisture concentrations Calibration Interval Sensor recalibration by GE is recommended every 6 to 12 months depending on the application Certification Complies with EMC Directive 89 336 EEC and PED 97 23 EC for DN 25 UL 508 Figure 10 Certification Label for information only ...

Страница 34: ...equired Normal operation of the HygroTrace does not require access to the information contained in these menus Diagnostics A Diagnostics Display page can be selected from the Display Menu see Figure 11 below but can be accessed only by using the service passcode Figure 11 Diagnostics Display Menu x H 1 234567 60 2 C ppb N 85 R 0 855 M 1 195886e 05 100 2 Heater Temperature Hygrometry Voltage Number...

Страница 35: ...the following screen appears Update Due to product improvements or software enhancements it may be necessary to install new software provided by GE Sensing This is done over the RS485 digital communications link using a PC application capable of performing an XMODEM file transfer Note For updates the baud rate setting on the COMMS menu is ignored Updates will use the following parameters Baud Rate...

Страница 36: ... to power up proceeds through several initiation displays and returns to normal operation Parameter Storage Dump This function transmits the contents of the EEPROM used for calibration and parameter storage via the RS485 digital link It is provided to assist GE Sensing service personnel in maintaining the product To dump the parameter storage select Dump press Enter and the following message appea...

Страница 37: ...the unit returns to the previous screen If you select YES the following message appears When the erasure is complete Param Storage reappears To return to the Service Menu press Cancel Heater Test To perform a test of the heater select Heater Test press Enter and a screen similar to the following appears Use the arrow keys to select the appropriate temperature to test and press Enter The temperatur...

Страница 38: ...urve To edit the calibration curve select Cal Curve on the Cal Data menu and press Enter The following screen appears To set a calibration point highlight Select Cal Point press Enter and the following screen appears Use the arrow keys to enter the desired calibration point to change and press Enter or Cancel to keep the previous value The screen returns to Edit Cal Curve Proceed in the same way t...

Страница 39: ...p the previous value The screen returns to the Extrapolation menu Press Cancel twice to return to the Service Menu Reboot To reboot the meter and return to the initial screen select Reboot and press Enter The following screen appears Select YES or NO and press Enter or press Cancel If you select NO or press Cancel the unit returns to the previous screen If you select YES a reboot occurs Note The H...

Страница 40: ...USA 1100 Technology Park Drive Billerica MA 01821 4111 Web www gesensing com Ireland Sensing House Shannon Free Zone East Shannon Co Clare Ireland ...

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