YOKOGAWA GD402G /M1, User Manual

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IM 11T03E01-51E
<Introduction>
Introduction
The manual is applied to the following product.
Detector: GD40G (General Purpose), GD40R (TIIS) (Style S2),
GD40T (FM), GD40V (CSA) (Style S1)
Converter: GD402G (General Purpose) option code /M1 (Converter with Terminal
Block) (Style S2)
Note: When using GD40/402 as CE marking compliance product, select GD40G and GD402G.
The related documents are as follows.
General Specifications: GS 11T3E1-01E
User’s Manual: IM 11T03E01-51E (this manual)
* the “E” in the document number is the language code.
An exclusive User’s Manual might be attached to the products whose suffix codes or option
codes contain the code “Z” (made to customers’ specifications). Please read it along with this
manual.
The GD402 gas density meter and the GD40 detector not only provide continuous measurement
of gas density, but also several other valuable parameters, including specific gravity and
molecular weight. The GD40 detector is designed for intrinsically safe and flame-proof,
explosion protected applications. It is designed to be virtually maintenance free for all accepted
applications.
The GD402 is a rugged microprocessor-based converter designed in two versions to meet both
general area and explosion-proof application requirements. In addition to the display of several
key data items, the converter also provides the choice of three different means for calibration:
automatic; semi-automatic and one-touch manual operation.
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Cross-Checking the Specifications
CAUTION
The GD402 gas density meter is shipped after adjusting the both of detector and converter in
pairs. When installation, confirm whether the serial number on both of converter and detector are
in pairs or not. If mismatched in pairs, converter is to be out of order. When converter or detector
supplied individually, enter the detector constants, described on inside the lid of the GD40, into
converter so that the GD402 is going to be well.
In detail, please refer to Figure 5.30, Figure 6.31 or Figure 7.28.
Upon delivery of the purchased product, unpack it carefully and make sure it is completely free
from damage that may have occurred during transport. It must be shipped in strict conformance
to the purchaser’s specifications. By way of precaution, confirm that the equipment is the exact
model you ordered. Also check that all accessory components are included, when confirming the
specifications, refer to the model and suffix codes indicated on the nameplate on the equipment.
For a description of the model and suffix codes, refer to Chapter 1,’’Specifications.’’
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Consideration of Operation Parameters
The GD402 operates with the same parameters set when it was delivered (default data) , when it
is put into operation under these conditions.
Media No. IM 11T03E01-51E 6th Edition : June 2021 (YK)
All Rights Reserved Copyright © 2007, Yokogawa Electric Corporation