Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 19)

IM 11M12A01-05E 2-1
2. Specifications
2. Specifications
This chapter focuses on the specifications for the High-temperature Humidity Analyzer
(integrated model) and associated equipment, including:
ZR202G Integrated type Zirconia High-temperature
Humidity Analyzer
(See Section 2.1.2)
ZH21B Dust protector (See Section 2.1.3)
ZA8F Flow setting unit (See Section 2.2.1)
ZR20H Automatic calibration unit (See Section 2.2.2)
ZO21S Standard gas unit (See Section 2.3)
2.1 General Specifications
2.1.1 Standard Specifications
High-temperature Humidity Analyzer
Oxygen concentration in mixed gas which consists of water vapor and air is proportional
to the volumetric ratio of oxygen in the air, so the volumetric ratio of water vapor can
be calculated from the oxygen concentration.
Measured Objects : Water vapor (in vol%) in mixed gases (air and water vapor)
Measured System : Zirconia system
Measured Range : 0.01 to 100 vol% O
2
, 0 to 100 vol% H
2
O or 0 to 1.000 kg/kg
Output Signal : 4 to 20 mA DC (maximum load resistance 550 V)
Oxygen concentration; Any setting in the range of 0 to 5 through 0 to 100
vol% O
2
(in 1 vol% O
2
), or partial range.
Moisture quantity; 0 to 25 through 0 to 100 vol% H
2
O (in 1 vol% H
2
O), or
partial range.
Mixture ratio 0 to 0.2 through 0 to 1.000 kg/kg (in 0.001 kg/kg), or
partial range.
Digital Communication (HART): 250 to 550 V, depending on quantity of field
devices connected to the loop (multi-drop mode).
Note: HART is a registered trademark of the HART Communication
Foundation.
Display Range: Oxygen concentration 0 to 100 vol% O
2
,
Moisture quantity 0 to 100 vol% H
2
O
Mixture ratio 0 to 1 kg/kg
Relative humidity 0 to 100% RH
Dew point -40 to 3708 C
Warm-up Time : Approx. 20 min.
These characteristics are calculated by oxygen concentration measured in air
which include water vapor.
(Note) Those values are calcurated by temperature and absolute pressure. Then accurate
tempera ture and pressure value must be input to the converter.
Repeatability : (See Note 1)
61 vol% H
2
O (sample gas pressure 2 kPa or less)