Yokogawa Gas Density Detector GD40G[Product print page]

Yokogawa Gas Density Detector GD40G

General purpose detector. 1/4 NPT gas threads and 1/2 NPT gland threads. No cable gland included. Mounting hardware included.

The Gas Density Meter consists of gas density converter GD402 and gas density detector GD40.

Features

Yokogawa Gas Density Detector GD40G
• Proven design
Highly responsive and sensitive measurement
of density. Specific gravity, molecular weight and gas concentration can also be displayed using Yokogawa's gas density analyzing techniques.
• Detector features
1. Resistant to external vibrations.
2. Outstanding stability against sudden changes in gas temperature.
3. The multi-mode self-oscillation circuit minimizes drift caused by the sensor itself or by oil mist, dust, moisture, etc. sticking to the sensor.
4. Easy cleaning and regeneration of sensor.
Should the sensor be contaminated with dust and/ or mist, then it can be easily cleaned and returned to its original condition.
5. Only routine maintenance is required.
(for example, once per 3 months depending on application.)
• Simple, user-friendly interface
Configuration can be performed locally via the front panel or remotely by using the (optional) "Brain" terminal.
• Low installation cost
Both explosion-proof and general purpose converters are designed for easy mounting on a pipe.  Wiring between the detector and converter is based on a two-wire system, keeping installation cost to a minimum.

General Specification
Yokogawa Gas Density Detector GD40G

1.1  System Components

(1) GD40G,T,V,R detector : Rainproof for outdoor use
(equivalent to IP65/NEMA 4X)
(see note under “2.2 Ambient condition” on page 3.) Ambient Temperature : -10 to 60°C
Ambient Humidity : 5 to 95%RH

GD40G :   General purpose detector. (Non-Explosion-proof)
Electrical connection : 1/2 NPT female
Process connection : 1/4 NPT female
GD40T : FM Explosion-proof and Intrinsically safe
Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G with Intrinsically Safe sensor for Class I, II, III, Division 1, Groups B, C, D, E, F and G.
Enclosure : NEMA Type 4X Temperature Code : T5
Electrical connection : 1/2 NPT female
Process connection : 1/4 NPT female
GD40V : CSA Explosion-proof and Intrinsically safe Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G with Intrinsically Safe sensor for Class I, II, III, Division 1, Groups B, C, D, E, F and G.
Enclosure : Type 4X Temperature Code : T5
Electrical connection : 1/2 NPT female
Process connection : 1/4 NPT female
GD40R : TIIS Explosion-proof and Intrinsically safe Approval.
Explosion-proof code : Exd [ia] IIB+H2T5
Temperature Code : T5
Electrical connection : G1/2 female
Process connection : Rc1/4

(2) GD402G, T, V, R Converter : Rainproof for outdoor use
(equivalent to IP65 / NEMA 4X) Ambient Temperature : -10 to 55°C Ambient Humidity : 5 to 95%RH

GD402G:  General purpose converter. (Non- Explosion-proof)
Electrical connection : 21mm (0.9inch) in diameter. Pg13.5 cable glands included
GD402T :  FM Explosion-proof Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G. Enclosure : NEMA Type 4X Temperature Code : T6
Electrical connection : 1/2 NPT female

Yokogawa Gas Density Detector GD40G
GD402V :  CSA Explosion-proof Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G. Enclosure : Type 4X
Temperature Code : T6
Electrical connection : 1/2 NPT female
GD402R :  TIIS Explosion-proof Approval.
Explosion-proof code : Exd IIB+H2T6
Temperature Code : T6
Electrical connection : G3/4 female

(3) EJA310 Absolute press transmitter (optional) FM Explosion-proof Approval:
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G. Hazardous(classified locations, indoors and outdoors (NEMA 4X)
Temperature Code : T6
Ambient Temperature : -40 to 60°C Ambient Humidity : 5 to 100%RH (at 40°C)
Electrical connection : 1/2 NPT female
Process connection : 1/4 NPT female
CSA Explosion-proof Approval:
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G. Division 2 ‘SEALS NOT REQUIRED’ Enclosure : Type 4X
Temperature Code : T4, T5, T6
Max. Process Temp.: T4 120°C, T5
100°C, T6 85°C
Ambient Temperature : -40 to 80°C Ambient Humidity : 5 to 100%RH (at 40°C)
Electrical connection : 1/2 NPT female
Process connection : 1/4 NPT female
TIIS Explosion-proof Approval:
Explosion-proof code : Ex do IIC T4X Temperature Code : T4
Ambient Temperature : -20 to 60°C Ambient Humidity : 5 to 100%RH (at 40°C)
Electrical connection : G1/2 female
Process connection : Rc1/4

Model and Suffix Codes 

Yokogawa Gas Density Detector GD40G

1.Gas Density Converter

Note1:               Explosion-proof models, GD402T, V, R have only pipe mounting hardware as standard.

Note2:               In the case of GD402R,where cables enter into the converter, cable glands specified in cl.3 shall be used.

 GD402¨ Standard Accessory List

2-1.  Gas Density Detector

GD40¨  Standard Accessory

*1:      Not supplied when option code "/EJAJ1¨", "/EJAF2¨", "/EJAF3¨" or "/EJAF4¨" is specified.

*2:      Supplied only for GD40R.