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TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook 700 FP Series Instruction Manual

Combustible gas detector
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INSTRUCTION MANUAL
700 FP SERIES
COMBUSTIBLE GAS DETECTOR
OLCT 700
OLCT 710
NP700FPIMEN-Revision E.0

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  • Page 1 INSTRUCTION MANUAL 700 FP SERIES COMBUSTIBLE GAS DETECTOR OLCT 700 OLCT 710 NP700FPIMEN-Revision E.0...
  • Page 2 Instruction manuals in other languages are available on Website https://teledynegasandflamedetection.com Copyright  November 2021 by TELEDYNE OLDHAM SIMTRONICS S.A.S. All rights reserved. No reproduction of all or part of this document, in any form, is permitted without the written consent of TELEDYNE OLDHAM SIMTRONICS S.A.S.

  • Page 3: Table Of Contents

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Table of Contents Introduction ..................1 Description ......................1 Modular Mechanical Design ................ 3 Plug-in Replaceable Sensor ................5 Installation ..................7 ATEX Operational Guidelines for Safe Use ..........7 Functional Safety (SIL 2) .................. 8 Detector Placement ..................
  • Page 4 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Table of Figures Figure 1: Sensor Cell Construction ....................2 Figure 2: Wheatstone Bridge ......................2 Figure 3: Response Curves ....................... 3 Figure 4: Detector Assembly Breakaway..................3 Figure 5: OLCT 700 Assembly Front View ..................4 Figure 6: OLCT 710 Front View ......................
  • Page 5 Limitation of Reliability • TELEDYNE OLDHAM SIMTRONICS shall not be held responsible for any damage to the equipment or for any physical injury or death resulting in whole or in part from the...
  • Page 6 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Guarantee • Under normal conditions of use and on return to the factory, sensors and electronics parts are guaranteed for 2 years from date of shipment; excluding consumables as desiccant, filters, etc. Waste Electrical and Electronic Equipment (WEEE directive) European Union (and EEA) only.

  • Page 7: Introduction

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Introduction Description Teledyne Oldham Simtronics OLCT 700 FP combustible gas detectors are non-intrusive “Smart” detectors designed to detect and monitor combustible gases in air. Range of detection is 0-100% LEL. OLCT 710 OLCT 700 The detector features an LED display of current reading, fault and calibration status.

  • Page 8: Figure 1: Sensor Cell Construction

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 1.1.1 Catalytic Bead (Pellistor) Sensor Technology The sensor technology is a poison-resistant catalytic bead type. Catalytic bead sensors show a strong response to a long list of combustible gases. The sensor is supplied as a matched-pair of detector elements mounted in a plug-in replaceable module.

  • Page 9: Modular Mechanical Design

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 1.1.3 Performance Characteristics The detector elements maintain good sensitivity to combustible gas concentrations in the Lower Explosive Limit (LEL) range, as shown in the response curves in Figure 3. However, for gas concentrations significantly above the LEL range (100% LEL = 5% by volume Methane), the bridge output begins to decrease.

  • Page 10: Figure 5: Olct 700 Assembly Front View

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL OLCT 700 FP Intelligent Transmitter Module (ITM). The ITM is a fully encapsulated microprocessor-based package that accepts a plug-in field replaceable sensor. Circuit functions include LED display, magnetic programming switches, a linear 4-20mA DC output, and a Modbus™...

  • Page 11: Plug-In Replaceable Sensor

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL OLCT 710 is made of an OLCT 700 attached to a flameproof certified junction box for terminal connections. Cover Locking Screw M34 - ¾ NPT Adapter Locking Screw Figure 6: OLCT 710 Front View Plug-in Replaceable Sensor The combustible gas sensor is a poison-resistant and field proven design.
  • Page 12 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL NP700FPIMEN Revision E.0...

  • Page 13: Installation

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Installation ATEX Operational Guidelines for Safe Use OLCT 700/710 conforms to the requirements of European Directive ATEX 2014/34/EU relating to explosive Gas atmospheres. The information given in the following sections should be respected and taken into account by the manager of the site where the equipment is installed.

  • Page 14: Functional Safety (Sil 2)

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL The threaded joints may be lubricated to maintain flameproof protection. Only non- hardening lubricants or non-corrosive agents having no volatile solvents may be used. A good ground connection should be verified between the sensor’s metal enclosure and the junction box.

  • Page 15: Detector Placement

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Detector Placement Selection of detector location is critical to the overall safe performance of the product. Five factors play an important role in selection of detector locations: (1) Density of the gas to be detected (2) Most probable leak sources within the industrial process (3) Ventilation or prevailing wind conditions (4) Personnel exposure...

  • Page 16: Sensor Contaminants And Interference

    When possible, mount the detector in an area void of high wind, accumulating dust, rain or splashing from hose spray, direct steam releases, and continuous vibration. If the detector cannot be mounted away from these conditions then make sure the Teledyne Oldham Simtronics Harsh Environment Splashguard accessory is used (PN DET-943-002273-000).

  • Page 17: Figure 9: Outline And Mounting Dimensions

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL • The equipment is allowed in ATEX zones 1 and 2 for ambient temperatures ranging from - 40 °C to +70 °C. Understand that operating temperature range may be different (see technical specifications). •...

  • Page 18: Electrical Installation

    Figure 10: Typical Installation NOTE: The Teledyne Oldham Simtronics Warranty does not cover water damage resulting from water leaking into the enclosure. However, since the electronics are 100% epoxy encapsulated, only the wire terminations could get wet. Moisture could cause abnormal operation and possibly corrosion to the terminal connections, but permanent damage to the detector would not be expected.

  • Page 19: Field Wiring

    • B (-) Modbus™ RS-485 Maximum wire length between detector and 24VDC source is shown in the Table below. Maximum wire size for termination in the Teledyne Oldham Simtronics J-Box accessory is 14AWG. Max loop load resistance between green and black wire (analog signal output) is 500 ohms.
  • Page 20 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 2.7.1 Cable Preparation NOTE: It is essential that the instructions provided by the manufacturer of the cable gland are followed and the braid is correctly connected. 1 - Remove the rubber pot and the two metal washers 2 - Arrange the cable as shown in the picture 3 –...

  • Page 21: Figure 11: Detector Wire Connections

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Locking screw Customer Supplied Wiring (In) Customer Explosion Proof Supplied Wiring Power from and 4-20mA Junction Box (Out to next Device) out to Control Device A(+) A(+) B(-) B(-) Modbus RS-485 to Modbus RS-485 to next Device Host Control Device...

  • Page 22: Initial Start Up

    Remove test gas and observe that the display decreases to “0”. Initial operational tests are complete. Teledyne Oldham Simtronics OLCT 700/710 FP combustible gas detectors are factory calibrated prior to shipment, and should not require significant adjustment on start up.

  • Page 23: Operation

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Operation Programming Magnet Operating Instructions The Operator Interface of the OLCT 700/710 FP Series gas detectors is accomplished via two internal magnetic switches located to either side of the LED display (see Figure 13). The two switches, labeled “PGM1”...

  • Page 24: Operator Interface

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL NOTE: While in the Program Mode, if there is no magnetic switch interaction after 4 consecutive menu scrolls, the detector will automatically revert to normal operating condition. While changing values inside menu items, if there is no magnet activity after 3-4 seconds the detector will (Exception to this is with “Signal Output Check”...

  • Page 25: Normal Operation

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Normal Operation PGM1 (3) PGM1 (3) Calibration Mode (Auto Zero) PGM2 (10) PGM2 (3) Calibration Mode (Auto Span) View Sensor Status Auto Time-Out PGM1/2 (M) Set AutoSpan Level Set Gas Factor Set Cal Factor PGM1/2 (3) AutoTime-out Auto Time-Out...

  • Page 26: Calibration Mode (Autozero And Autospan)

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Calibration Mode (AutoZero and AutoSpan) 3.4.1 AutoZero The AutoZero function is used to zero the detector. Local ambient air can be used to zero calibrate the detector as long as it can be confirmed that it contains no combustible gases. If this cannot be confirmed then a zero air cylinder should be used.
  • Page 27 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 3.4.2 AutoSpan The AutoSpan function is used to span calibrate the detector. Span adjustment is recommended at 50% LEL. If a span gas containing the recommended concentration is not available, other concentrations may be used as long as they fall between 5% and 95% LEL (0-100% LEL range) or 2% and 50% LEL (0-50% LEL range).
  • Page 28 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL NOTE: Upon entering Calibration Mode, the 4-20mA signal drops to 2mA and is held at this level until the program returns to normal operation. Modbus™ Status Register bit 14 is also set to signify when the detector is in-calibration mode.

  • Page 29: Program Mode

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 4-20mA output will be taken to 0mA and the “Clearing Fault” fault bit will be set on the Modbus output. Program Mode Program Mode provides a View Sensor Status menu to check operational and configuration parameters.
  • Page 30 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 3.5.2 View Sensor Status View Sensor Status displays all current configuration and operational parameters including: sensor type, software version number, detection range, AutoSpan level, days since last AutoSpan, estimated remaining sensor life, heater power, raw resistance, input voltage and detector ambient temperature.
  • Page 31 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL When the status list sequence is complete, the OLCT 700/710 will revert to the “View Sensor Status” text scroll. The user can either: 1) review list again by executing another 3-4 second hold, 2) move to another menu item by executing a momentary hold over PGM1 or PGM2, or 3) return to Normal Operation via automatic timeout of about 15 seconds (the display will scroll “View Sensor Status”...

  • Page 32: Table 2: Gas/Cal Factors

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL The following table shows the Gas Factors of most combustible gases that can be measured. Find the target gas and enter the corresponding value as the Gas Factor. For example, if butane were the target gas, the correct gas factor would be 1.71.
  • Page 33 15 seconds (the display will scroll “Set Cal Factor” 4 times and then return to Normal Operation). 3.5.6 Set Serial ID Teledyne Oldham Simtronics OLCT 700/710 FP detectors can be polled serially via RS-485 Modbus™ RTU. Refer to Section 4.0 for details on using the Modbus™ output feature. NP700FPIMEN Revision E.0...
  • Page 34 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL 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.
  • Page 35 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL From the “Signal Output Check” text scroll, hold the magnet over PGM1 or PGM2 until the  prompt appears and then hold continuously for an additional 10 seconds. Once initiated, the display will scroll “Simulation Active” until the function is stopped. During simulation mode, the 4- 20mA value will be increased from 4.0mA to 20.0mA (in 1% of range increments at about a 1 second update rate) and then decreased from 20.0mA to 4.0mA.

  • Page 36: Program Features

    • AutoSpan: AutoSpan Settings are lost and user must perform new AutoSpan (Section 3.4). Program Features Teledyne Oldham Simtronics OLCT 700/710 FP gas detectors incorporate a comprehensive set of diagnostic features to achieve Fail-Safe Operation. These Operational features and Failsafe Diagnostic features are detailed below.
  • Page 37 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Most fault conditions result in failed operation of the detector and in those cases the 4-20mA signal is dropped to the universal fault level of 0mA. These include the AutoZero and AutoSpan Calibration faults, Bridge Fault, Sensor Fault, Processor Fault, Memory Fault, Loop Fault, and Input Voltage Fault.
  • Page 38 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Processor Fault If the detector has any unrecoverable run-time errors, a “Processor Fault” is declared. A “Processor Fault” will cause a “Fault Detected” message to scroll once a minute on the display. The Modbus™...
  • Page 39 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL until the fault condition has been cleared. If an AutoSpan Reminder Fault occurs, the 4-20mA signal remains operational. Refer to the Troubleshooting Guide, Section 0, for guidance on fault conditions If you cannot fix oldhamsimtronics- the fault condition, email our Technical Service team at support@teledyne.com...
  • Page 40 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL NP700FPIMEN Revision E.0...

  • Page 41: Rs-485 Modbus™ Protocol

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL RS-485 Modbus™ Protocol OLCT 700/710 detectors feature Modbus™ compatible communications protocol and are addressable via the program mode. Communication is two wire, half duplex 485, 9600 baud, 8 data bits, 1 stop bit, no parity, with the detector set up as a slave device.

  • Page 42: Table 4: Modbus™ Special Registers

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Content Description Content Definition Value Meaning Range 03/06 40011 Special #1 Function dependent on value of 40006 (See Special Register Table 4) 03/06 40012 Special #2 Function dependent on value of 40006 (See Special Register Table 4) 40013 Special #3 Function dependent on value of...

  • Page 43: Service And Maintenance

    Test results should be recorded and reviewed to determine a suitable calibration interval; however, it must not exceed one year. The general manager should put safety procedures in place on-site. TELEDYNE OLDHAM SIMTRONICS cannot be held responsible for their enforcement.

  • Page 44: Replacement Of Plug-In Combustible Gas Sensor

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Replacement of Plug-in Combustible Gas Sensor Bottom Housing Lens and LCD Plug-In replaceable Assembly Display H2S Sensor Interconnect Wiring Splash Guard Intelligent ransmitter Module (ITM) Magnetic Microprocessor controlled circuit Housing Bottom Programming encapsulated in an explosion O-Rings Locking Set-Screw...

  • Page 45: Troubleshooting Guide

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Troubleshooting Guide Refer to the list of Failsafe Diagnostic features listed in Section 0 for additional reference in troubleshooting activities. Listed below are some typical trouble conditions and their probable cause and resolution path. Figure 16: Plug-in Sensor (Bottom View) Open Sensor Fault Probable Cause: Plug-in sensor has failed.
  • Page 46 • Evaluate area for presence of poisoning or inhibiting gases as listed in Section 2.4 • Increase calibration frequency • Replace plug-in sensor • If problem persists, note the sensor’s serial # and contact Teledyne Oldham Simtronics Technical Support at oldhamsimtronics-support@teledyne.com Unstable Output/ Sudden spiking Possible Causes: Unstable power supply, inadequate grounding, or inadequate RFI protection.
  • Page 47 • Perform a “Signal Output Check” sequence via Section 3.5.8 and verify 4-20mA output with Current Meter • Swap with new ITM to determine if the ITM’s 4-20mA output circuit is faulty. • If the 4-20mA current loop is still out of tolerance, contact Teledyne Oldham Simtronics at oldhamsimtronics-support@teledyne.com NP700FPIMEN...
  • Page 48 RMA numbers should be obtained from the Teledyne Oldham Simtronics Service Department prior to equipment being returned. For on-line technical service, customers should have ready the model number, part number, and serial number of product(s) in question.

  • Page 49: Appendix

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Appendix Specifications Sensor Type: Continuous diffusion/adsorption type Matched-Pair Catalytic Bead type True plug-in replaceable type Sensor Life: 3-5 years typical Measuring Range: 0-100% LEL (Lower Explosion Limit) Accuracy/ Repeatability: ±3% 0-50% LEL; ±5% 50-100% LEL Response/Clearing Time: T50 <...
  • Page 50 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Environmental Specifications Operating Temperature: -40°F to +158F°; -40°C to +70°C Storage Temperature: --58°F to +158°F; -50°C to +70°C Operating Humidity: 0-99% RH (Non-condensing) Mechanical Specifications Dimensions: OLCT 700 7"H x 2.2"D; 178mmH x 65mmD OLCT 710 13.74"H x 5.0"W x 5.12"D;...

  • Page 51: Spare Parts, Detector Accessories, Calibration Equipment

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Spare Parts, Detector Accessories, Calibration Equipment Part Number Spare Parts DET-927-525500-100 OLCT 700/710 FP Intelligent Transmitter Module (ITM) OLCT 700/710 Housing Bottom Assembly (includes Flame DET-602-003152-000 Arrestor) DET-370-201600-700 OLCT 700/710 FP Replacement Plug-in Sensor DET-500-003087-100 Transient Protection PCA for OLCT 700/710 detector Detector Accessories...

  • Page 52: Olct 700/710 Fp Drawings

    700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL OLCT 700/710 FP Drawings NP700FPIMEN Revision E.0...
  • Page 53 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL Ground Points OLCT 710 FP Series Dimensional NP700FPIMEN Revision E.0...
  • Page 54 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL This page been left blank intentionally NP700FPIMEN Revision E.0...
  • Page 55 700 FP SERIES COMBUSTIBLE GAS DETECTOR INSTRUCTION MANUAL This page been left blank intentionally NP700FPIMEN Revision E.0...
  • Page 56 Z.I. Est – CS 20417 Ruiping Road, Xuhui District TX 77429, 62027 ARRAS Cedex, SHANGHAI FRANCE CHINA Tel.: +1-713-559-9200 Tel.: +33 (0)3 21 60 80 80 Tel.: +86-134-8229-5057 www.teledynegasandflamedetection.com © 2023 TELEDYNE OLDHAM SIMTRONICS. All right reserved. NP700FPIMEN Revision E.0 / November 2023...

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