Table Of Contents - Honeywell XNX Safety Manual

XNX Universal Transmitter

Table of Contents

1 SIL 2 Certificates ...........................................................3
1.1 XNX Gas Detector Transmitter .............................3
2 Overview .........................................................................4
3 Safety Parameters .........................................................5
3.1 Interval of Proof Testing .......................................5
4 Fault Diagnostic Time Interval ......................................6
5 Proof Test .......................................................................6
5.1 Purpose of Proof Testing .....................................6
5.2 Expected Outcome of Proof Testing ...................6
5.3 Tolerance of Output Current Levels ....................6
6 Proof Testing Procedure ...............................................7
6.1 Checking................................................................7
6.1.1 Force mA Output ...............................................7
6.1.2 Zero Gas mA Output ..........................................7
6.1.3 Calibration Gas mA Output ..............................7
6.2 Adjusting ...............................................................7
6.2.1 Calibrate 4.0 mA and 20.0 mA ..........................7
6.2.2 Zero Gas Calibration and Span Calibration ....8
6.2.2.1 Zero Gas Calibration ...................................8
6.2.2.2 Span Calibration .........................................9
6.3 Verifying mA Settings .........................................10
6.4 Testing .................................................................11
6.4.1 Fault and Alarm State ......................................11
6.4.2 Gas Verification ................................................12
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