8. APPENDIX
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General Specifications
Measuring object:
Oxygen in noncombustible gas
Measuring method:
Directly insert type zirconia system
Measuring range:
0 to 2 ··· 50 vol%, two ranges, user
configurable
(in 1 vol% O
2
steps)
Repeatability:
Within
±0.5%FS
Linearity:
Within
±2%FS
Response time:
Within 4 to 7 sec, for 90% (from calibra-
tion gas inlet)
Warmup time:
More than 10 min
Analog output:
4 to 20mA DC (allowable load resistance
less than 500
:
) or 0 to 1V DC (output
resistance more than 100
:
)
Power supply:
Rated voltage;
100 to 120V AC (operating voltage 90
to 132V AC)
200 to 240V AC (operating voltage
190 to 264V AC)
Rated frequency; 50/60Hz
Power consumption:
Maximum 240VA (Detector: approx.
200VA, Converter: approx. 40VA)
During normal operation 70VA (Detec-
tor: approx. 50VA, Converter: approx.
20VA)
Detector Specifications (ZFK)
Measured gas temperature:
Flow guide tube system; −10 to +600ºC
(for general-use, corrosive gas)
Ejector system; −10 to +1500ºC (for
high-temperature gas)
−10 to +800ºC (for general-use)
Measured gas pressure:
−3 to +3kPa (−306 to +306mmH
2
O)
Flow guide tube:
With or without blow-down nozzle
Flange; JIS5K 65A FF
(JIS5K-80AFF for high particulate gas)
Insertion length; 0.3, 0.5, 0.75, 1m
Ejector (general-use):
Probe for guiding measured gas to
detector
Flange; JIS10K 65A RF
Insertion length; 0.5, 0.75, 1, 1.5m (ac-
cording to customer's specification)
Operating temperature:
−10 to +60ºC for Primary detecting ele-
ment
−5 to +100ºC for ejector section
125ºC or less at detector flange surface
with power applied
*
When sample gas temperature is
lower than 150°C and the outside
temperature is lower than 0°C, cover
the flow guide tube flange and the
detector (the part that contact outside
air) with thermal insulating material to
prevent dew condensation.
Storage temperature:
Sensing element: −20 to +70ºC
Ejector: −10 to +100ºC
Structure:
Dust/rain-proof structure(IEC IP66
equivalent)
Filter:
Alumina(filtering accuracy 50μm) and
quartz paper
Main materials of gas-contacting parts:
Detector; Zirconia, SUS316, platinum
Flow guide tube; SUS304 or SUS316
Ejector (general use); SUS316, SUS304
Ejector; (for high temperature) SiC,
SUS316, SUS304
Calibration gas inlet:
I
6mm tube join,
I
1/4-inch tube join, or
ball valbe (as specified)
Reference air inlet (option):
I
6mm tube join or
I
1/4-inch tube join (as
specified)
Detector mounting:
Horizontal plane ±45º, ambient sur-
rounding air should be clean.
Outer dimensions:
(L × max. dia.) 210mm × 100mm (de-
tector)
Mass (approx.) {weight}:
Detector;
1.6kg
Ejector; 15kg (insertion length 1m)
Flow guide tube (general-use, 1m); 5kg
Finish color:
Silver and SUS metallic color
Ejector air inlet flow rate:
5 to 10 L/min
Calibration gas flow:
1.5 to 2 L/min
Blowdown air inlet pressure:
200 to 300kPa {2 to 3 kgf/cm
2
}
Ejector exhaust gas processing:
Into furnace, returned to flue
Heater temperature drop alarm output (ejector):
Alarm output when below 100
ºC Me-
chanical thermostat
N.O. (1a) contact, 200V AC, 2A
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