YOKOGAWA ZR202S, User Manual, Page: 24 / 163

<2. Specifications>
2-4
IM 11M13A01-04E
Linearity: (Excluding standard gas tolerance)
(Use oxygen of known concentration (with in the measuring range) as the
zero and span calibration gases.)
± 1% Maximum value of set range; Range from 0 to 5 vol%O
2
to 0 to 25
vol%O
2
. (Sample gas pressure: within ± 4.9 kPa)
± 3% Maximum value of set range; Range from 0 to 25 vol% O
2
or more and
less than 0 to 50 vol%O
2
. (Sample gas pressure: within ± 0.49 kPa)
± 5% Maximum value of set range; Range from 0 to 50 vol% O
2
to 0 to 100
vol%O
2
. (Sample gas pressure: within ± 0.49 kPa)
Drift: (Excluding the first two weeks in use)
Both zero and span ± 2% Maximum value of range set/month
Response Time: Response of 90% within 5 seconds. (Measured after gas is introduced from
calibration gas inlet and analog output starts changing.)
2.1.2 ZR202S Integrated type Explosion-proof Zirconia Oxygen Analyzer
Can be operated in the field without opening the cover using optical switches.
Display: 6-digit LCD
Switch: Three optical switches
Output Signal: 4 to 20 mA DC, one point (maximum load resistance 550 Ω)
Digital Communication (HART): 250 to 550 Ω, depending on quantity of field devices connected to
the loop (multi-drop mode).
Note: HART is a registered trademark of the HART Communication Foundation.
Contact Output Signal: Two points (one is fail-safe, normally open)
Contact Input Signal:
Two points
Sample Gas Temperature: 0 to 700°C
It is necessary to mount the cell using Inconel cell-bolts when the temperature
measures more than 600°C.
High-temperature service ― greater than 700°C ― is not available.
A flame arrestor may corrode if sample gas contains the following corrosive gases
under 380°C or over.
Greater than 5000 ppm SO
2
Greater than 1000 ppm NO
Greater than 50 ppm HCl
Sample Gas Pressure: -5 to +5 kPa
No pressure fluctuation in the furnace should be allowed.
Oxygen concentration of sample gas:
For explosion-proof use, not more than that found in normal air, typically 21 vol%
Probe Length: 0.4, 0.7, 1.0, 1.5, 2.0 m
Probe Material: 316 SS (JIS)
Ambient Temperature: -20 to +55°C (- 5 to +70°C on the case surface)
Storage Temperature: -30 to +70°C
Ambient Humidity:
0 to 95%RH (non-condensing)
Power Supply Voltage: Ratings; 100 to 240 V AC, Acceptable range; 85 to 264 V AC
Power Supply Frequency: Ratings; 50/60 Hz, Acceptable range; 45 to 66 Hz
Power Consumption: Max. 300 W, approx. 100 W for ordinary use.
Reference Gas System: Instrument Air