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PETROCHEMICAL
PROCESSING
MINING &
TUNNELLING
OFFSHORE
PLATFORMS
MANUFACTURING
& PROCESS
PLANTS
STORAGE AREAS &
WAREHOUSING
WATER
MANAGEMENT
& SEWAGE
TREATMENT
POWER GENERA TION
GAS STORAGE &
DISTRIBUTION
TELECOMMS
TX6373
TOXIC GAS SENSOR/TRANSMITTER
ISSUE N 06/15
INSTALLATION &
OPERATING DATA
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Summary of Contents for Trolex TX6373
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Page 1: Table Of Contents
TX6373 TOXIC GAS SENSOR/TRANSMITTER PETROCHEMICAL PROCESSING INSTALLATION & MINING & TUNNELLING OPERATING DATA OFFSHORE PLATFORMS contents... MANUFACTURING p a g e & PROCESS PRINCIPAL OPERATING FEATURES PLANTS APPLICATION STORAGE AREAS & DIMENSIONS AND MOUNTING WAREHOUSING TECHNICAL DETAILS INSTALLATION WATER MANAGEMENT CONNECTIONS &... -
Page 2: Principal Operating Features
INSTALLATION & OPERATING DATA 1 PRINCIPAL OPERATING FEATURES Stationary gas sensors for the detection of a wide range of toxic gases. Suitable for use in SIL 1 and SIL 2 applications, in accordance with any conditions or restrictions. High accuracy electrochemical sensing elements. Pre-calibrated plug-in sensing... -
Page 3: Application
A choice of output signals for direct interfacing with most standard industrial monitoring systems. A range of primary instrumentation and monitoring modules is available from Trolex to which the sensors can be directly connected to provide a flexible choice of display and control functions. -
Page 4: Dimensions And Mounting
INSTALLATION & OPERATING DATA 3 DIMENSIONS TX6373 Toxic Gas Sensor/Transmitter 3.2 TX6373.84 Toxic Gas Sensor/Transmitter with Remote Gas Sensing Module 2 Fixing holes for M6 Socket Cap Head Screws 2 Holes for 2 Holes for 2 Holes for M6 Socket... - Page 5 INSTALLATION & OPERATING DATA 4 TECHNICAL DETAILS continued Electrical Details TX6373.01 GROUP I APPLICATIONS (12 V dc) Output: 0.4 to 2 V dc Min Load 10 k ohms Supply 6.5 to 16.5 V dc Max Current <10 mA Output: 4 to 20 mA...
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Page 6: Installation
TX6373.02 TOXIC GAS SENSOR/ TRANSMITTER GROUP II TX6373.03 TOXIC GAS SENSOR/ TRANSMITTER GENERAL PURPOSE TX6373.84.01 TOXIC GAS SENSOR/ TRANSMITTER GROUP I with Remote Gas Sensing Module TX6373.84.02 TOXIC GAS SENSOR/ TRANSMITTER GROUP II with Remote Gas Sensing Module TX6373.84.03 TOXIC GAS SENSOR/ TRANSMITTER... - Page 7 A very important part of an efficient gas monitoring system is the training of plant personnel in operation and maintenance of the sensors and the complete monitoring system. Training facilities can be provided by qualified Trolex application engineers. Once a sensor installation is complete, the sensor locations and types should be formally recorded and a planned test and maintenance procedure instituted.
- Page 8 INSTALLATION & OPERATING DATA 5 INSTALLATION continued 5.5 Relative Density The relative density or buoyancy of the gas or vapour with respect to air is a very important consideration. This determines its propensity to rise or fall when released into the atmosphere. Gases or vapours with a buoyancy less than air will tend to rise from the source of release.
- Page 9 INSTALLATION & OPERATING DATA 5 INSTALLATION continued 5.8 Operating Life Electrochemical cells contain an electrolyte that is gradually consumed during use. The average life is about two years, dependent upon the duty cycle. The response should be checked at regular intervals. 5.9 Sensitivity Electrochemical cells for toxic gases can be affected by other interfering gases which may displace the subject gas being monitored.
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Page 10: Connections
INSTALLATION & OPERATING DATA 6 CONNECTIONS OUTPUT SIGNAL OPTIONS TX6373 TOXIC GAS SENSOR/ TRANSMITTER 2 - WIRE CURRENT LOOP OPERATION 1 2 3 4 5 6 7 8 Signal Supply TX6373 TOXIC GAS SENSOR/ TRANSMITTER 4 - WIRE OPERATION 6 7 8... - Page 11 TX6373.01 TOXIC GAS SENSOR/ TRANSMITTER SAFE All options of the TX6373.01 sensor (0.4 to 2 V, 4 to 20 mA and 5 to 15 Hz) are certified Intrinsically Safe for use in Group I HAZARDOUS hazardous areas (Mining) when used with approved equipment TX6373.01...
- Page 12 Power up: Red LED flashes 3 times Normal Operation: No LEDs illuminated KFD2–CR–EX 1.30–300 Supply Signal If you require any help with the use and connection of hazardous area equipment please contact the Trolex Technical Department. 12/25 ISSUE N 06/15...
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Page 13: Controls And Indicators
Gas Entry Port TX6373.84 TOXIC GAS SENSOR/ TRANSMITTER REMOTE GAS SENSING MODULE. This version uses the same pre-calibrated gas sensing module as the TX6373. The module is fitted into a robust metal housing which can be mounted at a remote location where space is constricted or the operating conditions are extremely harsh. -
Page 14: Calibration
Product Suppor t Depar tment. Alternatively the gas sensing module may be re-calibrated when required, using a Trolex TX6520 Gas Test Kit equipped with both Air and Test Gas canisters. Prepare to Calibrate Connect the application tube of the gas test kit to the inlet aperture of the gas sensing module. - Page 15 INSTALLATION & OPERATING DATA 8 CALIBRATION continued Calibrate ZERO Apply purge air, at a flow rate of 0.2 to 1 l/min, for a few seconds to clear all remnants of gas. The Gas Sensing Module will automatically return to the NORMAL measuring mode if NO pushbuttons are operated within 60 seconds.
- Page 16 INSTALLATION & OPERATING DATA 8 CALIBRATION continued Calibrate SPAN Apply test gas, at a flow rate of 0.2 to 1 l/min, for a few seconds until the display value stabilises. The Gas Sensing Module will automatically return to TEST GAS the NORMAL measuring mode if NO pushbuttons are operated within 50 seconds.
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Page 17: Maintenance
Output Signal Check the response of the sensor at pre-determined intervals by injecting a test gas using a Trolex TX6520.32 Gas Test Kit. Compare the value of the display with the value marked on the test gas canister. - Page 18 Annual Safety Check The main transmitter itself will not normally require maintenance or calibration but it is advisable to return it to the Trolex Product Support Department for an annual safety check. Damaged Sensors...
- Page 19 INSTALLATION & OPERATING DATA 9 MAINTENANCE continued Maintenance and Calibration Log ORDER REF TX6373 DATE SUPPLIED SERIAL No. USER GAS TYPE LOCATION DATE SCHEDULED FAILURE RE-CALIBRATE CHANGE GAS RETURN TO COMMENTS SENSING MANUFACTURER MODULE 19/25 ISSUE N 06/15...
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Page 20: Approvals And Certification
Copies of certificates are available from Trolex. When the TX6373 is specifically required for group II, Zone 0, the TX6373 should not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge as the polycarbonate window may store an ignition- capable level of electrostatic charge. - Page 21 Under certain extreme circumstances, the polycarbonate window may store an ignition-capable level of electrostatic charge. Therefore, when it is used for applications that specifically require group II, category 1 equipment, the TX6373 shall not be installed in a location where the external conditions are conductive to the build-up of electrostatic charge.
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Page 22: Functional Safety
SIL specified for the safety instrumented function to be achieved and maintained, as far as the TX6373 Toxic Gas Sensor/Transmitter is concerned. The actual SIL will depend on many system considerations that are outside the scope... - Page 23 See Section 11 of this manual Table 1 Basic Element Information The hardware failure data for the TX6373 element safety function is based on an extensive analysis of field failure data with a 90% single sided confidence limit is shown in Table 2.
- Page 24 The following additional restrictions and conditions apply when the unit is used in SIL applications: 1. The host controller must monitor the TX6373 Toxic Gas Sensor/Transmitter output at an appropriate frequency for the application (safety time) and initiate a safe action (eg.
- Page 25 The illustration below shows how the TX6373 is to be used with other system elements. If a controller other than the TX9042 is used then the out of range (fault indication) signal from the TX6373 must be detected and acted upon to assert a system fault. TROLEX LIMITED NEWBY ROAD, HAZEL GROVE, STOCKPORT,...
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