YOKOGAWA ZR202S, User Manual, Page: 34 / 163

<2. Specifications>
2-14
IM 11M13A01-04E
2.3 ZO21S Standard Gas Unit
CAUTION
Standard Gas Unit (Model ZO21S) must not be located in hazardous area.
This is a handy unit to supply zero gas and span gas to the detector as calibration gas. It is used in
combination with the detector only during calibration.
The ZO21S does not conform to CE marking.
Standard Specifications
Function: Portable unit for calibration gas supply consisting of span gas (air) pump, zero
gas cylinder with sealed inlet, flow rate checker and flow rate needle valve.
Sealed Zero Gas Cylinders (6 provided): E7050BA
Capacity:
1 l
Filled pressure: Approx. 686 kPaG (at 35°C)
Composition: 0.95 to 1.0 vol%O
2
+ N
2
balance
Power Supply: 100, 110, 115, 200, 220, 240 V AC ± 10%, 50/60 Hz
Power Consumption: Max. 5 VA
Case material:
SPCC (cold rolled steel sheet)
Paint Color: Mainframe; Munsell 2.0 GY3.1/0.5 equivalent
Cover; Munsell 2.8 GY6.4/0.9 equivalent
Piping: Ø6 х Ø4 mm flexible tube connection
Weight: Approx. 3 kg
Model and Codes
Model Suffix code Option code Description
ZO21S - - - - - - - - - - - - - - - - - - - - - - - - Standard gas unit
Power
supply
-2
-3
-4
-5
-7
-8
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
- - - - - - - - - - - - -
200 V AC 50/60 Hz
220 V AC 50/60 Hz
240 V AC 50/60 Hz
100 V AC 50/60 Hz
110 V AC 50/60 Hz
115 V AC 50/60 Hz
Panel
-J
-E
- - - - - - - - - - - - -
- - - - - - - - - - - - -
Japanese version
English version
Style code *A - - - - - - - - - - - - - Style A
External Dimensions
92
228
253
1600
354
Flow checker
Span gas valve
Zero gas valve
Gas outlet
F2-6E.ai Zero gas cylinder (6 cylinder): E7050BA
Unit: mm