SENS.413347.015RE
16
8.3.5.6 Configure gas detector in accordance with specific application as per subsection
8.4. Configuration of gas detector may be performed by Manufacturer in accordance with
customer requirements. At the same time, it is necessary to check correspondence of
configuration parameters, listed in configuration data sheet of gas detector, to specific
application and, if necessary, correct them in accordance with subsection 8.4
Note - It is necessary to draw attention to correct setting of gas detector address in
SENS system (for gas detector model with SENS interface) and in RS-485 Modbus protocol
network (for gas detector model with RS-485 interface), as installation of gas detector with
same addresses in one segment of SENS line and one segment of RS-485 Modbus protocol
network is not allowed.
8.3.5.7 For cases if composition of atmosphere includes combustible gases or vapors,
check of gas detector is performed using VGM No.1 (high purity nitrogen, grade 1, with volume
fraction of nitrogen, %, at least 99.999 as per GOST 9293) and VGM adapter, in accordance
with check diagram shown in figure G.1 of Annex G as follows:
- supply VGM No.1 to gas detector, using rotameter, set flow rate of VGM 0.4 to 0.6
l/min;
- perform operations as per 8.3.5.3, 8.3.5.4;
- stop supply of VGM No.1 to gas detector;
- perform actions as per 8.3.5.5.
8.3.5.8 Turn off power supply, disassemble checking circuit.
8.3.6 Installation
8.3.6.1 Before installation
8.3.6.2 Selection of installation place
Selection of installation place should be performed in accordance with GOST IEC 60079-
29-2-2013, explosion protection marking and requirements of actual regulatory documents,
depending on application object.
Gas detector must be installed vertically, with compartment for primary transducer
downwards.
Do not install gas detector in places where elements of product design may be exposed
to damaging mechanical impacts.
It is required to install gas detector in place with access for maintenance.
8.3.6.3 Mounting of gas detector
Gas detector is mounted on the flat surface using bolts (pins) and housing tails (7) (see
figure D.1 of Annex D).
8.3.6.4 Wiring and sealing
Loosen stopper screw (21), remove cover (4). Remove two captive screws (6), remove
electronic unit (5) from gas detector housing. For convenience of wiring, disconnect cable of
PT from "SENSOR" connector (15).
ATTENTION!
FOR WIRING USE ROUND-SECTION CABLE WITH OUTER DIAMETER:
- for D12 cable entry: 5-8, 8-10, 10-12 mm;
- for D18 cable entry: 12-14, 14-16, 16-18 mm.
Connection and sealing of gas detector shall be performed by following methodology in
accordance with figure E.1 of Annex E:
- remove bushing (4), remove plug (1) designed for sealing of gas detector during
storage and transportation. Insert cable that has a length sufficient for connection to screw
terminal clamp of electronic unit, into housing of device.
Note - tighten bushing (4) in unused cable entry for strong compression of the plug (1).
Summary of Contents for SG-A1
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