Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 35)

IM 11M12A01-03E 2-16
2.4 ZA8F Flow Setting Unit and ZR40H Automatic Cali-
bration Unit
2.4.1 ZA8F Flow Setting Unit
This flow setting unit is applied to the reference gas and the calibration gas in a system
configuration (System 2).
This unit consists of a flow meter and flow control valves to control the flow of calibra-
tion gas and reference air.
• Standard Specifications
FIowmeter: Calibration gas; 0.1 to 1.0 l/min. Reference air; 0.1 to 1.0 l/min.
Construction: Dust-proof and rainproof construction
Case Material: SPCC (Cold rolled steel sheet)
Painting: Baked epoxy resin, Dark-green (Munsell 2.0 GY 3.1/0.5 or equivalent)
Pipe Connections: Rc1/4 or 1/4FNPT
Reference Air pressure: Clean air supply of measured gas pressure
plus approx. 50 kPa G
(or measured gas pressure plus approx. 150kPa G when a check valve is used)
pressure at inlet of the auto-calibration unit (Maximum 300 kPaG).
Air Consumption: Approx. 1.5 l/min
Weight: Approx. 2kg
Calibration gas (zero gas,span gas) flow : 0.7 l/min (at calibration time only)
᭹ Model and Codes
ZA8F
-J
-A
T2.5E.EPS
Model Suffix code Option code Description
Flow setting unit
Joint
With 1/4" NPT adapter
Style A
Rc 1/4
Style code *B