Oldham OLCT 200 User Manual Download

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USER MANUAL

OLCT 200

Gas Detection

Transmitter

P/N: 77036007-1
Revision: 6.2

Reference Firmware: 3.01 (wired rev. 3.2)
Reference Firmware: 3.09 (wireless rev. 1.3)
Reference Firmware: 3.09 (wireless rev. 2.4)

The Fixed Gas Detection Experts

Summary of Contents for OLCT 200

Page 1: ...LCT 200 Gas Detection Transmitter P N 77036007 1 Revision 6 2 Reference Firmware 3 01 wired rev 3 2 Reference Firmware 3 09 wireless rev 1 3 Reference Firmware 3 09 wireless rev 2 4 The Fixed Gas Dete...

Page 2: ...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 specifications of this...

Page 3: ...can be held liable for any damages including without limitations damages for the loss or interruption of manufacture loss of information defect of the OLCT 200 unit injuries loss of time financial or...

Page 4: ...OLCT 200 User Manual 4...

Page 5: ...ype and OLCT 200 Signal Conditioning 31 SECTION 3 INITIAL START UP 33 3 1 Transmitter Configuration Menu 33 3 2 Initial Bridge Sensor Monitor Start Up 34 3 3 Initial Toxic Oxygen Sensor Monitor Start...

Page 6: ...3 7 2 Set Balance Set Sensor Voltage Technicians only 64 7 3 Set Gain to Unity Technicians only 65 7 4 PreAmp Gain Adjust Technicians only 65 7 5 Zero Cal Value Technicians only 66 7 6 Raw Min Max Cou...

Page 7: ...us severe mechanical shock Protect the OLCT 200 from dripping liquids and high power sprays Use only for applications described within this manual Oxygen deficient atmospheres may cause combustible ga...

Page 8: ...AFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY READ AND UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING OR SERVICING ATTENTION POUR DES RAISONS DE S C...

Page 9: ...ired OLCT 200 models provides a standard 4 20 mA output signal for connection to control systems or other alarm instrumentation Available options include an Alarm Relay RS 485 Modbus board an Isolated...

Page 10: ...recognized by the OLCT 200 and prompts users to either upload new configuration data or continue with data from the previous smart sensor Missing Sensors trip the FAIL alarm Sensors are industry prove...

Page 11: ...or location Air movement by fans prevailing winds and convection should be carefully evaluated to determine if a leak is more likely to raise gas levels in certain areas within the facility Vapor dens...

Page 12: ...osion Proof Housing Figure 2 2b OLCT 200 Explosion Proof Housing with Dual Sensor Head Adaptor N P T Hub 2 Places 4 61 8 0 Universal Sensor Head 25 Dia 2 Places 5 50 5 3 Dimensions in inches 0010 1200...

Page 13: ...al bottom 10 0233 I O Power Supply board generates voltages needed for LCD backlight relays RS 485 Modbus HART and Bridge sensor and is required with any of these I O functions The enclosure is equipp...

Page 14: ...OLCT 200 User Manual 14 Figure 2 3a Outline Drawing OLCT 200 Wired Models...

Page 15: ...OLCT 200 User Manual 15 Figure 2 3b Outline Drawing OLCT 200 Battery Powered Wireless Models Figure 2 3c Outline Drawing OLCT 200 10 3VDC Powered Wireless Models...

Page 16: ...odel 3 Wire Model 10 30VDC Wireless Model Battery Powered Wireless Model 25mA max 24VDC 100mA 24VDC with 0 5watt sensor Relays 40mA per relay 120mA for three energized relays RS 485 20mA 20mA sleep mo...

Page 17: ...ravel is dependent upon several factors including the cable gauge DC power supply voltage level and impedance of the input of the receiving device Assuming a nominal 24 VDC power supply maximum total...

Page 18: ...Instructions Unscrew the cover on the OLCT 200 explosion proof enclosure Loosen the 2 thumbscrews holding the display assembly in place and remove it A small sensor cable is attached with sufficient l...

Page 19: ...OLCT 200 User Manual 19 2 6 2 Installation Drawing 11 0100...

Page 20: ...put terminal When the OLCT 200 is equipped with the bottom 10 0233 I O Power Supply board shown in Figure 2 5 the 2 wire 4 20mA output is disabled and one of the 10 0233 s 3 wire outputs must be used...

Page 21: ...es and Wiring The OLCT 200 s radio module mounts piggy back to the back of the Display assembly as shown in Figure 2 6 The module s MMCX RF connector connects to the antenna fitting s pigtail coax cab...

Page 22: ...rews holding the display assembly and remove it A small ribbon cable is attached with sufficient length to allow access to the I O PCB mounted in the bottom of the enclosure Figure 2 7 Power and signa...

Page 23: ...is recommended there be at least 20dB extra system operating margin RF Rules of Thumb Doubling the range with good RF Line of Site LOS requires an increase of 6 dB Doubling the range without good RF...

Page 24: ...ond layer of self vulcanizing weatherproofing tape such as 3M 23 order 1000 2314 with a final layer of adhesive PVC tape see Figure 2 9 Figure 2 9 Water Proofing Antenna Connections 2 6 4 5 System Gro...

Page 25: ...nd protected from noise spikes to prevent false Alarm Reset Figure 2 10 10 0234 Alarm Relays Modbus Option Instructions Unscrew the cover on the OLCT 200 explosion proof enclosure Loosen the two thumb...

Page 26: ...others should have J1 in the B position Front panel Rx Tx LEDs are helpful troubleshooting tools Figure 2 11 RS 485 Modbus Wiring 2 8 Isolated 4 20mA Output 10 0250 Option Description The optional 10...

Page 27: ...lications the power is supplied from the controller that is receiving the 4 20 mA output In these applications only three wires are required since common is shared from the I O board to the HART modem...

Page 28: ...tor added to the output loop since the controller has a 150 ohm terminating resistor installed from the factory Figure 2 13 10 0351 HART Modem Option Instructions for Accessing Process Variables with...

Page 29: ...e Figure 2 14 Connection Points for Connecting HART Handheld Figure 2 14 Top View of OLCT 200 showing HART connection terminals At the controller end connect the HART handheld directly across the sign...

Page 30: ...sensor heads with catalytic bead Infrared or PID sensors must connect to S1 located on the optional I O PCB assembly Figure 2 5 Figure 2 16 10 0247 Smart Sensor Head Assembly Smart Sensors are automat...

Page 31: ...In addition same sensor types have different response coefficients signal strength and gain and offset requirements The block wiring diagram in Figure 2 18 illustrates how OLCT 200 s are able to accep...

Page 32: ...OLCT 200 User Manual 32...

Page 33: ...ual 4 20mA output capability If both the O2 TOXIC and LEL Current menu items are ON the OLCT 200 will function as a dual gas monitor with both sensor inputs and 4 20mA outputs active Either input may...

Page 34: ...setting sensor volts using the OLCT 200 LCD The voltage displayed on the LCD is monitored across TB1 REF and TB1 ACT on the OLCT 200 Power Supply board Figure 2 4 and may be confirmed with a voltmeter...

Page 35: ...mart electrochemical sensors rarely require adjustments other than routine calibrations to provide accurate readings However after installation the following checks should be performed to insure prope...

Page 36: ...OLCT 200 User Manual 36...

Page 37: ...AL PURGE delay to prevent external alarms during calibration Wireless models transmit 200 counts 884 counts for oxygen during CAL PURGE Local OLCT 200 alarm relays if equipped are inhibited during CAL...

Page 38: ...OLCT 200 User Manual 38 Figure 4 1 Calibration Gas Input...

Page 39: ...y 1 minute press the EDIT key to perform a SPAN calibration WARNING The SPAN gas used must match the value specified since this is what the OLCT 200 will indicate after a successful SPAN calibration T...

Page 40: ...lashing the FAIL LED ALL ALARM EVENTS EXCEPT FOR LOW BATTERY INCREASE WIRELESS TRANSMISSIONS TO EVERY 6 SECONDS 4 2 1 ALARM 3 UNDERSTANDING FAULT LEVEL OPERATION The A3 alarm is typically dedicated to...

Page 41: ...nu database Upon installation many menu items will contain default values from the factory and require changes to better match a user s particular application OLCT 200 menus may be conFigured from the...

Page 42: ...items All SETUP menu items have at least one page of sub menus Items with sub menus are indicated by the symbol right hand pointing arrow at the end of each line Edit menu items by pointing to them pr...

Page 43: ...tain virtually any 16 character ASCII field It is typically used to describe the monitored point by user tag or other familiar terminology L E L I NP UT 2 L CD Co n t r a s t A d j Mo d b u s RS 4 8 5...

Page 44: ...ghest amount of deadband allowed is 5 The 4 20mA output is not affected by this menu item Track Negative set to NO causes negative values to read the Zero 0 value in data displays The CAL MODE readout...

Page 45: ...ls may be set from 0 to 20mA Quiescent current of 2 wire models limits this setting to 3 to 20mA TX Sensor Life wired models only set for YES causes the OLCT 200 4 20mA output to transmit a sensor lif...

Page 46: ...o g 0 8 12 0 4 0 3 17 A 1 I N 0 8 12 0 4 0 3 5 1 A 2 I N 0 8 12 0 4 0 3 5 5 A CK 0 8 12 0 4 0 4 16 A 2 OUT 0 8 12 0 4 0 4 2 3 A 1OUT 0 8 12 0 4 15 0 0 A 1 I N 0 8 12 0 4 16 4 3 A 1OUT 0 8 13 0 4 0 2 0...

Page 47: ...r is lost K3 is a FAULT alarm and is always failsafe K2 Acknowledge set for YES means the UP RESET key RESET key during either data display will set K2 to the normal state EVEN when an Alarm 2 conditi...

Page 48: ...and Date must be set to correctly match its location They are set at the factory in a 24 hour format but may require adjustment to match the location s time date after shipment Follow the procedure i...

Page 49: ...special key sequence of four consecutive UP keystrokes There are two Diagnostics menus useful for driving outputs without exposing the sensor to the target gas The OUTPUT SIMULATION menu allows setti...

Page 50: ...S SETUP menu is not available because the serial port is no longer active Figure 5 12 Modbus RS 485 Setup Menu WA RNI NG A l a r m p r o c e s s i n g w i l l b e h a l t e d d u r i n g d i a g n o s...

Page 51: ...s back to FALSE automatically Read Only Registers D2A Raw Chan 1 31001 4 NA D2A Raw Chan 2 31002 4 NA Calibrated 10 bit value representing the D2A value of 0 to 1023 for 25 to 105 FS 200 0 1000 100 IM...

Page 52: ...erature 31012 4 NA 16 bit integer ranging from 1 to 4095 scaled for 55 to 125 degrees C Memory Floating Point Note Returned as 15bit plus sign 2s complement with 5 over underrange applied Consider ove...

Page 53: ...3 4 NA Chan 1 Cal Span Devisor 41004 4 NA Chan 1 Zero Real 41005 4 NA Chan 1 Zero Devisor 41006 4 NA Chan 1 Span Real 41007 4 NA Chan 1 Span Devisor 41008 4 NA Chan 1 Fault Real 41009 4 NA Chan 1 Faul...

Page 54: ...the A D and D A converters 5 11 SYSTEM SECURITY The SYSTEM SECURITY menu offers two levels of protection A LOW level allows CAL MODE sensor calibrations but requires the 4 digit Pass Code prior to al...

Page 55: ...h transceiver on a wireless network must have its RADIO SETUP menus configured to share the same Hop Channel and System ID in order to communicate see section 6 5 There should never be two servers wit...

Page 56: ...nds the monitor performs a sniff test to detect level of target gas present at the sensor At each sniff test the Zzz s Sleep Mode icon is briefly replaced by an RS icon as described above in section 2...

Page 57: ...00 monitor SW1 should be OFF if the monitor is to be out of service for long periods IMPORTANT Do not turn SW1 ON until the controller designated as Server is fully operational and ready to communicat...

Page 58: ...ID may be set from 1 255 and is similar to a password character or network number and makes network eavesdropping more difficult A transceiver will not go In Range of or communicate with a transceive...

Page 59: ...ts every 54 seconds IMPORTANT More frequent RF transmissions deplete the battery faster Radio Status opens a page indicating if the OLCT 200 is In Range of the Server A voltage reading on this page di...

Page 60: ...tation to receive data from OLCT 200 s Figure 6 4 WX4 base stations must have their Communications menus set for Wireless Receiver mode as shown in Figure 6 4 In Receiver mode the WX4 may have 1 4 cha...

Page 61: ...OLCT 200 User Manual 61 Figure 6 5...

Page 62: ...OLCT 200 User Manual 62...

Page 63: ...tical items Figure 7 1a Technicians Menu Tree Wired Models S E N S OR B A L A NC E Re a d i n g 3 Co u n t s 4 9 6 UP DN t o Ch a n g e NE X T t o E x i t S E N S OR V OL T A GE V o l t s 2 0 4 UP DN...

Page 64: ...ge sensors may be from 2 to 6 volts excitation voltage at the sensor This means if the sensor is mounted a long distance away the voltage at the OLCT 200 may have to be higher to compensate for losses...

Page 65: ...etting automatically resets previous calibration OFFSET GAIN values to UNITY as described in section 7 3 If it is determined the PreAmp Gain value is incorrect apply the desired up scale input and use...

Page 66: ...ax Counts Technicians only The Raw Min Max Counts menus determine the range of 10 bit analog to digital A D converter counts that define 0 100 of full scale Raw Min A D counts create 0 readings and Ra...

Page 67: ...upply 8 1 1 ARCTIC Smart Sensor Temperature Setpoint Option Both the O2 TOXIC and LEL Current channels see section 3 1 1 are capable of accepting ARCTIC Smart Sensors with 1 watt heater temperature co...

Page 68: ...OLCT 200 User Manual 68 panel TXD LED see Figure 2 1 to also illuminate when the Marker is detected Important Optional 10 0234 RS 485 modbus port will not function if Marker TX LED menu must YES...

Page 69: ...le LEL Pentane Cal 0 100 LEL 1 LEL 25 LEL 10 LEL 20 LEL 12 Combustible LEL Hydrogen Cal 0 100 LEL 1 LEL 25 LEL 10 LEL 20 LEL 9 2 Infrared IR Sensors Factory Default Settings Ref Gas Range Resolution C...

Page 70: ...by sudden changes in temperature If there is an excessive change in the ambient temperature gas sample temperature or flow rate then the output signal will be monmentarily frozen Correct operation is...

Page 71: ...sor can be disrupted by sudden changes in temperature If there is an excessive change in the ambient temperature gas sample temperature or flow rate then the output signal will be monmentarily frozen...

Page 72: ...y monitor Ethylene gas The output of the IR sensor can be disrupted by sudden changes in temperature If there is an excessive change in the ambient temperature gas sample temperature or flow rate then...

Page 73: ...renheit and Celsius temperatures For example it can be seen that at 80 F and 90 relative humidity RH a response is decreased from that in dry air by 20 This effect will be the same for any detectable...

Page 74: ...g accuracy do not touch the lamp window with bare fingers You may touch the lamp body with clean fingers PID lamp cleaning kit P N 78105025 The vial of cleaning compound contains alumina CAS Number 13...

Page 75: ...if it has been contaminated by toxic materials then show due care when disposing Re fitting PID pellet and lamp Caution Never refit a damaged lamp 1 Place the lamp inside the O ring seal in the pelle...

Page 76: ...CO 0 300ppm 1ppm 100ppm 35ppm 70ppm 48 Hydrogen Sulfide H2S 0 30ppm 1ppm 25ppm 10ppm 20ppm 49 Hydrogen Sulfide H2S 0 100ppm 1ppm 25ppm 10ppm 20ppm 50 Hydrogen Chloride HCl 0 30ppm 0 1ppm 10ppm 5ppm 10...

Page 77: ...e 0 100 LEL IR 78105007 26A 26 Ethylene 0 100 LEL IR 78105006 30A 30 VOC s PID 78105005 41A 41 Chlorine Cl2 0 10 0ppm EC 78105005 43A 43 Carbon Monoxide CO 0 100ppm EC 78105005 44A 44 Carbon Monoxide...

Page 78: ...41 Chlorine Cl2 0 10 0ppm EC 78105005 43B 43 Carbon Monoxide CO 0 100ppm EC 78105005 44B 44 Carbon Monoxide CO 0 300ppm EC 78105005 48B 48 Hydrogen Sulfide H2S 0 30 0ppm EC 78105005 49B 49 Hydrogen S...

Page 79: ...OLCT 200 User Manual 79...

Page 80: ...Cedex FRANCE T l 33 0 3 21 60 80 80 Fax 33 0 3 21 60 80 00 Website http www oldhamgas com AMERICAS Tel 1 713 559 9280 Fax 1 281 292 2860 americas oldhamgas com ASIA PACIFIC Tel 86 21 3127 6373 Fax 86...

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