Yokogawa GD40 Gas Density Detector User Manual

Page 34

<2. Installation, Wiring and Piping>

2-11

IM 11T3E1-01E

Note 1: P1 (Inlet pressure) <= Max. 0.5 MPa (71 psi)

Note 2: P1 (Inlet pressure) - P2 (Outlet pressure) >= 0.5 kPa (0.071 psi) (depending on the size and length of the pipe)

Note 3: Flowrate = 0.1 to 1 l/min

Note 4: The cylinder pressure must be reduced to P1 (Inle t pressure).

Sample gas line

Switching valve

Flowmeter

Note 3

Gas for zero

calibration

Gas for span

calibration

Note 1

Note 2

Note 4

Detector unit (EJA and GD40 detector

mounted on plate)

(Supplied by Yokogawa)

Supplied by customer.

Pressure regulator

for gas cylinder

Filter

EJA (Explosion-proof

pressure transmitter)

F0211.ai

(1) Example of Gas density and Calorie meters

Flowmeter

Note 2

Note 1

Note 3

Vent

Detector unit

AIR

Explosion-proof

pressure transmitter

F0212.ai

Note 1 : P1 (Inlet pressure ) <= Max 0.5884 MPa (abs.)

Note 2 : Flowrate = 0.1 to 1 l/min

Note 3 : P1 (Input pressure ) - P2 (Output pressure ) >= 0.5 kPa

Note 4 : The cylinder pressure must be reduced to P1(Inlet pressure).

Generator

Calibration gas

Note 4

(2) Example of Hydrogen purity meter

Figure 2.10 System Configuration

This manual is related to the following products:

EXA GD402 Gas Density Analyzer