1.General Introduction
Yokogawa GD40 is the detector of GD40/GD402 gas density analyzer which applicable for intrinsically safe and explosion-proof zones, it is designed to be virtually maintenance free for all accepted applications which owns several outstanding features as : resistant to external vibrations; outstanding stability against sudden changes in gas temperature; multi-mode self-oscillation circuit minimizes drift caused by the sensor itself or by oil mist, dust, moisture, etc. sticking to the sensor; easy cleaning and regeneration of sensor which can be easily cleaned and returned to its original condition when the sensor be contaminated with dust and mist; only routine maintenance is required, for example, once per 3 months depending on application.
2.General Specification
Main Characters | Description |
Material exposed to gas | SUS316 stainless steel, Acrylonitrile Butadiene Rubber and Fluorine-contained Rubber (o-ring) |
Ambient conditions | Temperature: -10 to 60°C (14 to 140°F), Humidity: 5 to 95%RH |
Installation | Pipe-mounted or on panel |
Ingress Protection | IP65 |
Construction | GD40G gas density analyzer: General purpose detector for Non-Explosion-proof zones |
GD40T gas density analyzer: FM Explosion-proof and Intrinsically safe Approval | |
GD40V gas density analyzer: CSA Explosion-proof and Intrinsically safe Approval | |
GD40R gas density analyzer: TIIS Explosion-proof and Intrinsically safe Approval |
3.Model Selection of GD40G GD40R
Model | Suffix Codes | Description | |
GD40G | General purpose detector. 1/4 NPT gas threads and 1/2 NPT gland threads. No cable gland included. Mounting hardware included | ||
GD40R | TIIS certified explosion proof detector. Rc1/4 gas threads and G1/2 gland threads. Cable gland included. Mounting hardware included. | ||
Label approval | -E | English label, no approval (only GD40G) | |
-J | TIIS approval, English label (only GD40R) | ||
Options | /EJAJ1 | TIIS certified EJX mounted with detector on mounting plate. Rc1/4 gas threads and G1/2 gland thread. Cable gland included.(only GD40R) | |
/EJAJ1T | TIIS certified EJX mounted with detector on mounting plate. Rc1/4 gas threads and G1/2 gland thread. Cable gland included. EJX with TAG (only GD40R) | ||
/EJAF2 | EJX mounted with detector on mounting plate.1/4 NPT gas threads and 1/2 NPT gland threads. No cable gland included.(only GD40G) | ||
/EJAF2T | EJX mounted with detector on mounting plate.1/4 NPT gas threads and 1/2 NPT gland threads. No cable gland included. EJX with TAG (only GD40G) |
4.Model Selection of GD40T GD40V
Model | Suffix Codes | Description |
GD40T | FM certified explosion proof detector. 1/4 NPT gas threads and 1/2 NPT gland thread. No cable gland included. Mounting hardware included | |
GD40V | CSA certified explosion proof detector. 1/4 NPT gas threads and 1/2 NPT gland thread. No cable gland included. Mounting hardware included. | |
Options | /EJAF3 | FM certified EJX mounted with detector on mounting plate.1/4 NPT gas threads and 1/2 NPT gland thread. No cable gland included. (only GD40T) |
/EJAF3T | FM certified EJX mounted with detector on mounting plate.1/4NPT gas threads and 1/2 NPT gland thread. No cable gland included. EJX with TAG (only GD40T) | |
/EJAF4 | CSA certified EJX mounted with detector on mounting plate. 1/4 NPT gas threads and 1/2 NPT gland thread. No cable gland included. (only GD40V) | |
/EJAF4T | CSA certified EJX mounted with detector on mounting plate. 1/4 NPT gas threads and 1/2 NPT gland thread. No cable gland included. EJX with TAG (only GD40V) |
5.Basic System Configuration
6.External Dimensions
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