Za8F Flow Setting Unit And Zr20H Automatic Calibration Unit; Za8F Flow Setting Unit - YOKOGAWA ZR402G User Manual

JIS flange
Install facing upwards
Flange
JIS 5K 80 FF
ANSI Class 150 4B FF
2.2 ZA8F Flow Setting Unit and ZR20H
Automatic Calibration Unit
2.2.1

ZA8F Flow Setting Unit

This flow setting unit is applied to the reference gas and the calibration gas in a system
configuration (System 2). Used when instrument air is provided.
This unit consists of a flowmeter and flow control valves to control the flow of calibration gas and
reference gas.
Standard Specifications
FIowmeter Scale:
Construction:
Case Material:
Painting:
Tube Connections:
Reference Gas Pressure: Clean air supply of sample gas pressure plus approx. 50 kPa G (or
Air Consumption:
Weight:
Calibration gas (zero gas, span gas) Consumption: Approx. 0.7 l/min (at calibration time only)
NOTE
Use instrument air for span calibration gas, if no instrument air is available, contact YOKOGAWA.
428 (Insertion length)
ANSI flange
C
A B
180 145
228.6 190.5
Calibration gas; 0.1 to 1.0 l/min. Reference gas; 0.1 to 1.0 l/min.
Dust-proof and rainproof construction
SPCC (Cold rolled steel sheet)
Baked epoxy resin, Dark-green (Munsell 2.0 GY 3.1/0.5 or equivalent)
Rc1/4 or 1/4NPT (Female)
sample gas pressure plus approx.150 kPa when a check valve is used.)
Pressure at inlet of the fl ow setting unit. (Max. 300 kPa G)
Approx. 1.5 l/min
Approx. 2.3 kg
<2. Specifications>
Unit: mm
t
D
C
ZH21B.ai
C t D
4 - Ø19 12 40
8 - Ø19 12 50
IM 11M12A01-04E
2-11
11th Edition : Jul. 19, 2017-00