3
Quick Start
3.1
Overview
The gas sensor module has been supplied factory calibrated and ready for immediate installation and operation. An installer
familiar with installation and operation of gas detection products can use this section to begin immediate use of the module.
3.2
Wiring
See Section
to determine if 3-wire or 4-wire operation is necessary.
Provide two conductor twisted shielded wiring from the power supply/control device to the sensor module location. Use wire
that is 18 AWG or larger.
3.3
Module Installation
The sensor can be mounted in a variety of configurations supported by the conduit. See Section
to
determine which configuration is best for your specific application. The default configuration enables the modules to be put
in line with other modules with the sensor element below the transmitter. To change the configuration simply remove the
transmitter and rotate to the appropriate configuration and remount the standoffs and transmitter.
The module is designed to be installed on a ¾” NPT or M20 conduit. During installation heed the following:
•
The installation must meet any hazardous environment codes for electrical equipment.
•
The sensor module enclosure mounting must be spaced far enough from any vertical surface to allow removal and
replacement of the sensor assembly which is threaded into one ¾” conduit entry.
•
Sensor housing must be oriented vertically pointing downward.
•
If module is installed outdoors it is recommended that it be sheltered from direct sunlight.
3.4
Transmitter Installation
To install the transmitter printed circuit assembly into the housing, carefully turn the faceplate so that the printing is in the
correct horizontal position for the mounting configuration and slide the assembly over the two stand-offs in the enclosure.
Hand tighten the two captive panel thumb screws into the stand-offs. Replace the enclosure cover prior to providing power
to the transmitter.
3.5
Startup and Operation
To begin operation of the sensor module, activate the instrument loop with 10-30 VDC. Each time the sensor module is
powered up it will perform a warm-up for approximately 1.0 minutes (60 seconds). During this time the display will read
“Starting”. The loop output will be held at 4 mA.
NOTE: If the sensor is uncalibrated, the startup display will state “UNCALIB” instead of “STARTING”.
NOTE: All IT modules require 300 seconds warm-up period. After the warm-up period has expired, the display
will indicate the gas concentration. Also, the instrument loop will be released to output current in the range of
4 to 20 mA. The actual current is linear with the gas concentration and depends on the selected range. For
instance, when the range of 0 to 50 PPM has been selected, a current of 4 mA corresponds to 0 PPM and a
current of 20 mA corresponds to 50 PPM.
3.6
Zero Stabilization
All electrochemical sensors require at least 30 minutes on power prior to calibration. This allows the electrode potentials to
equilibrate, resulting in a stable zero signal level.
12
SMC 5100-XX-IT Toxic Gas Detector Module
3 Quick Start
US
Summary of Contents for 5100-03-IT
Page 5: ...15 5100 88 IT Dimensions 67 SMC 5100 XX IT Toxic Gas Detector Module 5 US...
Page 20: ...mA Circuit Types 20 SMC 5100 XX IT Toxic Gas Detector Module 4 Installation US...
Page 50: ...12 Modbus Memory Map 50 SMC 5100 XX IT Toxic Gas Detector Module 12 Modbus Memory Map US...
Page 51: ...13 HART SMC 5100 XX IT Toxic Gas Detector Module 51 US 13 HART...
Page 52: ...52 SMC 5100 XX IT Toxic Gas Detector Module 13 HART US...
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