YOKOGAWA ZR202S, User Manual, Page: 21 / 163

<2. Specifications>
2-1
IM 11M13A01-04E
2. Specifications
This chapter describes the specifications for the following:
ZR202S Integrated type Explosion-proof Zirconia Oxygen Analyzer (See Subsection 2.1.2)
ZO21R-L Probe Protector (See Subsection 2.1.3)
ZA8F Flow Setting Unit (See Subsection 2.2.1)
Automatic Calibration Unit (See Subsection 2.2.2)
ZO21S Standard Gas Unit (See Section 2.3)
Other equipments (See Section 2.4)
CAUTION
Requirements for explosion-proof use:
The ambient temperature is in the range of -20 to +55°C. The surface temperature of the ZR202S is
not over the temperature class T2 (300°C)(*)
(*) The surface temperature of the amplifier box does not exceed 70°C.
Oxygen concentration of sample/reference/calibration gas shall not exceed that found in normal air,
typically 21 vol%.
2.1 General Specifications
2.1.1 Standard Specifications
Measured Object: Oxygen concentration in combustion exhaust gas and mixed gas (excluding
inflammable gases. May not be applicable corrosive gas such as ammonia
and chlorine is present - Contact with YOKOGAWA and its agency.
Measurement System: Zirconia system
Measurement Range: 0.01 to 100 vol%O
2
Output Signal: 4 to 20 mA DC (maximum load resistance 550 Ω)
Setting Range: Any setting in the range of 0 to 5 through 0 to 100 vol%O
2
(in 1 vol%O
2
),
or partial range
Digital Communication (HART): 250 to 550 Ω, depending on number of field devices connected
to the loop (multi-drop mode).
Note: HART is a registered trademark of the HART Communication Foundation.
Display Range: 0 to 100 vol%O
2
Warm-up Time: Approx. 20 min.
Explosion-proof Approval:
ATEX Flameproof: ZR202S-A;
Applicable Standard: EN 60079-0: 2012+A11: 2013, EN 60079-1: 2014,
EN 60079-31: 2014
Certificate Number: KEMA 04ATEX2156 X
Type of protection: Ex db IIB+H
2
T2 Gb, Ex tb IIIC T300°C Db