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OLCT 700/710 TP 

Page 22 of 45  

                                Rev. C.1 

OLCT 700/710 TP Instruction Manual  

 

3.5.5

 

Set Serial ID 

 
Oldham OLCT 700/710 TP detectors can be polled serially via RS-485 Modbus™ RTU. Refer to Section 
4.0 for details on using the Modbus™ output feature. 
 

Set Serial ID

 is used to set the Modbus™ serial ID address. It is adjustable from 01 to 256 in hexadecimal 

format (01-FF hex). The current serial ID can be viewed in View Sensor Status using the instruction given 
in Section 3.5.2 View Sensor Status. 
 
From the “

Set Serial ID”

 text scroll, hold the programming magnet over PGM1 or PGM2 until the “◄” 

prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display 
starts  to  scroll  “Set  ID”).  The  display  will  then  switch  to  “XX“  (where  XX  is  the  current  ID  address). 
Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the hexadecimal number until 
the  desired  ID  is  displayed.  Hold  the  magnet  over  PGM1  or  PGM2  for  3-4  seconds  to  accept  the  new 
value. The display will scroll “ID Saved”, and revert to “Set Serial ID” text scroll. 
 
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic 
timeout  of  about  15  seconds  (the  display  will  scroll  “Set  Serial  ID”  5  times  and  then  return  to  Normal 
Operation). 
 

3.5.6

 

Set Heater Power  

 
Set Heater Power is used to set the each H

2

S sensor to the optimum operating temperature. 

 

NOTE

:  The  function  is  performed  during  factory  calibration  of  each  OLCT  700/710  TP 

detector assembly, and is not necessary during installation. However, it is necessary to perform 
in the field if the plug-in H2S sensor is replaced or if the Restore Factory Defaults function has 
been executed. 

 
From  the  “Set  Heater  Power” text scroll,  hold  the  programming  magnet  over  PGM1  or  PGM2  until the 
“◄”  prompt  appears  and  continue  to  hold  the  magnet  in  place  for  an  additional  3-4  seconds  (until  the 
display  starts  to  scroll  “Setting  Heater”).  After  scrolling  “Setting  Heater”,  the  detector  will  adjust  the 
Heater  power.  The  sequence  should  require  about  2-minutes.  When  the  cycle  is  complete,  the  OLCT 
700/710 will revert to the “Set Heater Power” text scroll. 
 

NOTE

:  If  the  OLCT  700/710  cannot  adjust  the  heater  power  within  3  minutes  an  error 

message, “Can’t set, Reverting to Default”, will be scrolled. Refer to section 0  
 
Troubleshooting Guide.
 

 
The current values for heater power and heater voltage can be observed in the “View Sensor Status” menu. 
The target heater power setting at 25C operating temperature is 235 +/- 5mW. At the operating temperature 
extremes the observed heater power settings will vary according to the data below: 
 

Temperature 

(in °C) 

Heater Power 

(+/- 5 mW) 

50 

215 

260 

-20 

275 

-40 

295 

 
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic 
timeout of about 15 seconds (the display will scroll “Set Heater Power” 4 times and then return to Normal 
Operation). 
 

 

Содержание 700 TP Series

Страница 1: ...OLCT 700 710 TP The Fixed Gas Detection Experts Instruction Manual 700 TP Series Hydrogen Sulfide Detector Solid State Sensor Part Number NP700TPIMEN Revision C 1 OLCT 700 OLCT 710...

Страница 2: ...ithout the written consent of Oldham S A S All of the information that is provided in this document is accurate to the best of our knowledge As a result of continuous research and development the spec...

Страница 3: ...al Start Up 12 3 Operation 15 3 1 Programming Magnet Operating Instructions 15 3 2 Operator Interface 16 3 3 Normal Operation 17 3 4 Calibration Mode AutoSpan 17 3 5 Program Mode 19 3 6 Program Featur...

Страница 4: ...Figure 6 Outline and Mounting Dimensions 8 Figure 7 Typical Installation 9 Figure 8 Detector Wire Connections 12 Figure 9 Magnetic Programming Tool 15 Figure 10 Magnetic Programming Switches 15 Figur...

Страница 5: ...lated or used as the basis for the manufacture or sale of OLDHAM equipment or for any other reason without the prior consent of OLDHAM Warning This is not a contractual document In the best interest o...

Страница 6: ...OLCT 700 710 TP vi OLCT 700 710 TP This page has been left blank intentionally...

Страница 7: ...1 ATEX Operational Guidelines for Safe Use Solid State H2S Sensor Technology The sensor technology is a patented solid state mixed metal oxide semiconductor The sensor consists of two thin films a te...

Страница 8: ...Module ITM is a fully encapsulated microprocessor based package that accepts a plug in field replaceable H2S sensor Circuit functions include LED display magnetic programming switches a linear 4 20mA...

Страница 9: ...s sensor is a field proven plug in replaceable type sensor with over sized gold plated connections that eliminate corrosion problems It can be accessed and replaced in the field very easily by releasi...

Страница 10: ...OLCT 700 710 TP Page 4 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual This page has been left blank intentionally...

Страница 11: ...erating temperature range equal or greater than 80 C 3 The threaded joints may be lubricated to maintain flameproof protection Only non hardening lubricants or non corrosive agents having no volatile...

Страница 12: ...determined by facility engineers with experience in similar processes Ventilation Normal ventilation or prevailing wind conditions can dictate efficient location of gas detectors in a manner where th...

Страница 13: ...presence of such contaminants in an area does not preclude the use of this H2S sensor technology although it is likely that the sensor lifetime will be shorter as a result Use of this sensor in these...

Страница 14: ...specifications The sensor shall always be in contact with ambient air Therefore do not cover the detector do not paint detector assemblies avoid dust accumulation The OLCT 700 710 TP should be vertic...

Страница 15: ...s and to avoid damage due to water leakage Refer to Figure 7 and Figure 8 for proper electrical installation Figure 7 Typical Installation NOTE The Oldham Warranty does not cover water damage resultin...

Страница 16: ...nd selected termination resistor Table 2 Wire Gauge vs Distance AWG Wire Dia Cross Section Meters Feet Over Current Protection 22 0 65 mm 0 32 mm 700 2080 3A 20 0 8 mm 0 5 mm 1120 3350 5A 18 1 0 mm 0...

Страница 17: ...into the OLCT 710 2 7 2 Terminal Connections CAUTION Do not apply System power to the detector until all wiring is properly terminated and openings are properly closed a Remove the junction box cover...

Страница 18: ...uires 24 gauge two conductor shielded twisted pair cable between detector and host PC General Cable Commodore part number ZO16P0022189 is recommended NOTE Install a 120 resistor across A B terminals o...

Страница 19: ...cies NOTE Span gas bottles contain 0 humidity and this ultra low humidity condition will cause inaccurate readings when used to calibrate a detector To prevent this error Oldham prescribes the use of...

Страница 20: ...OLCT 700 710 TP Page 14 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual...

Страница 21: ...t when the arrow prompt appears For momentary contact use the programming magnet is briefly held over a switch location The 3 and 10 second holds are generally used to enter calibration program menus...

Страница 22: ...w refer to the complete Software Flow Chart in Figure 11 Normal Operation Current Reading and Fault Status Calibration Mode AutoSpan Program Mode View Sensor Status Sensor Model Type Current Software...

Страница 23: ...2 M Set Serial ID Figure 11 OLCT 700 710 TP Software Flowchart 3 3 Normal Operation In normal operation the OLCT 700 710 Display continuously shows the current detector reading which will normally app...

Страница 24: ...rough e below for AutoSpan calibration a Verify that the AutoSpan Level is equal to the Calibration Span Gas Concentration refer to View Sensor Status in Section 3 5 2 If the AutoSpan Level is not equ...

Страница 25: ...nd will not clear the fault until a successful AutoSpan is completed e AutoSpan calibration is complete NOTE 1 If the sensor fails the minimum signal change criteria a Range Fault will be declared and...

Страница 26: ...ional 3 4 seconds to enter the selected menu item If there is no magnet activity while the menu item text is scrolling typically 4 repeated text scrolls the OLCT 700 710 will automatically revert to N...

Страница 27: ...se the AutoSpan Level until the correct level is displayed When the correct level is achieved hold the magnet over PGM1 or PGM2 for 3 4 seconds to accept the new value The display will scroll Level Sa...

Страница 28: ...ch H2S sensor to the optimum operating temperature NOTE The function is performed during factory calibration of each OLCT 700 710 TP detector assembly and is not necessary during installation However...

Страница 29: ...ion and calibration data from memory and revert to factory default values This may be required if the settings have been configured improperly and a known reference point needs to be re established to...

Страница 30: ...n the View Sensor Status menu After 180 days an AutoSpan Fault will be declared 3 6 2 Fault Diagnostic Failsafe Features Fail Safe Fault Supervision OLCT 700 710 TP MicroSafe detectors are designed fo...

Страница 31: ...until the fault condition is resolved Processor Fault If the OLCT 700 710 has any unrecoverable run time errors a Processor Fault is declared A Processor Fault will cause a Fault Detected message to s...

Страница 32: ...ure Fault occurs the 4 20mA signal remains operational AutoSpan Fault If 180 days has elapsed since the last successful AutoSpan an AutoSpan Fault will be generated An AutoSpan Fault will cause the Fa...

Страница 33: ...Meaning Range 03 40000 Device Type R 8 OLCT 700 710 Detector 03 06 40001 40001 Read Detectable Range1 2 Write Detectable Range R W 100 10000 For 0 100 For 0 100002 FP Read only TP 20 50 100 200 IR 0...

Страница 34: ...Reading times one x 10 with units in notation string for Low Range 1 Gas Reading times one x 100 with units in notation string for Low Range 2 4 Span Gas must be less than or equal to Detectable Range...

Страница 35: ...of water accumulation or Terminal Block corrosion 5 3 Condensation Prevention Packet A moisture condensation packet should be installed in every explosion proof Junction Box The moisture condensation...

Страница 36: ...guard Unthread and remove the Bottom Housing from the ITM d Gently pull the plug in H2S sensor cell out of the ITM Orient the new plug in sensor so that it matches with the female connector pins It ma...

Страница 37: ...l reading range should be 10 100 k ohms For sensors with an X in the serial number the normal reading range should be 75 k ohms to 2 meg ohms Failure would be open circuit Replace the plug in H2S sens...

Страница 38: ...nd level Verify use of span gas Humidifying Tube Check validity of span gas using H2S pull tube or other means check MFG date on cal cylinder Check for obstructions through stainless steel flame arres...

Страница 39: ...ith no Faults displayed and the 4 20 mA signal output is 0mA Check that wiring is properly connected at terminal blocks and through to controller inputs The 4 20mA output loop must be closed to avoid...

Страница 40: ...ustomerservice oldhamgas com technical support support oldhamgas com repair activities r2 oldhamgas com All Technical Service and Repair activities should be handled by the Oldham Service Department v...

Страница 41: ...A Over range condition Serial Output RS 485 Modbus RTU 9600 BPS 9600 N 8 1 Half Duplex Status Indicators 4 digit LED Display with gas concentration full script menu prompts for AutoSpan Set up Options...

Страница 42: ...10 w stainless steel j box Electrical Specifications Input Voltage 11 30 VDC Power Consumption Normal operation 68mA 1 7 watt Maximum 85mA 2 watts Inrush current 1 0A 24V RFI EMI Protection Complies w...

Страница 43: ...ET 960 240010 000 Desiccant Protection Packet for Cell 6322420 OLCT 710 ceiling mount Calibration Accessories DET 943 000000 000 Calibration Wind Guard DET 943 000006 132 Threaded Calibration Adapter...

Страница 44: ...OLCT 700 710 TP Page 38 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual 7 3 OLCT 700710 TP Drawings...

Страница 45: ...OLCT 700 710 TP OLCT 700 710 TP Instruction Manual Rev C 1 Page 39 of 45 OLCT 710 TP Series Dimensional Ground Ground...

Страница 46: ...OLCT 700 710 TP Page 40 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual...

Страница 47: ...OLCT 700 710 TP OLCT 700 710 TP Instruction Manual Rev C 1 Page 41 of 45 8 EU Declaration of conformity...

Страница 48: ...OLCT 700 710 TP Page 42 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual...

Страница 49: ...sion Date dd mm yyyy Changes made Approval A 0 30 09 2014 Release MS B 0 18 06 2015 Addition of the OLCT 710 MS B 1 29 09 2015 EC Declaration Update MS B 2 01 03 2016 Removal of NPT entry types MS C 0...

Страница 50: ...OLCT 700 710 TP Page 44 of 45 Rev C 1 OLCT 700 710 TP Instruction Manual This page has been left blank intentionally...

Страница 51: ...OLCT 700 710 TP OLCT 700 710 TP Instruction Manual Rev C 1 Page 45 of 45 This page has been left blank intentionally...

Страница 52: ...62027 Arras Cedex FRANCE Tel 33 0 3 21 60 80 80 Fax 33 0 3 21 60 80 00 Website https gasdetection 3m com contact gasandflamedetection mmm com AMERICAS Tel 1 800 247 72570 Fax 1 281 292 2860 ASIA PACIF...

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