10. Product Specifications 10-2. Specifications by model
78 / 79
Model
SC-04 (SO2) SC-04 (NO2) SC-04 (HCN)
Detection target
gas
Sulfur dioxide Nitrogen dioxide Hydrogen cyanide
Detection
principle
Electrochemical type
Display name
SO2 NO2 HCN
Sensor model
ESR-A13D ESR-A13D ESR-A13D
Display range
(resolution)
0.00 to 100.00 ppm
(0.05)
0.00 to 20.00 ppm
(0.05)
0.0 to 30.0 ppm
*3
(0.1)
Measurement
range (Japan
standard)
0.00 to 20.00 ppm 0.00 to 20.00 ppm 0.0 to 30.0 ppm
*3
Measurement
range (Export
models)
0.00 to 20.00 ppm 0.00 to 20.00 ppm 0.0 to 30.0 ppm
*3
Alarm setpoints
(Japan standard)
1st 2.00 ppm
2nd 5.00 ppm
3rd 5.00 ppm
TWA 2.00 ppm
STEL 5.00 ppm
OVER 100.00 ppm
1st 3.00 ppm
2nd 6.00 ppm
3rd 6.00 ppm
TWA 3.00 ppm
STEL 5.00 ppm
OVER 20.00 ppm
1st 4.7 ppm
2nd 9.4 ppm
3rd 9.4 ppm
TWA 0.9 ppm
STEL 4.5 ppm
OVER 30.0 ppm
Alarm setpoints
(Export models)
1st 2.00 ppm
2nd 5.00 ppm
3rd 100.00 ppm
TWA 2.00 ppm
STEL 5.00 ppm
OVER 100.00 ppm
1st 2.00 ppm
2nd 4.00 ppm
3rd 20.00 ppm
TWA 0.50 ppm
STEL 1.00 ppm
OVER 20.00 ppm
1st 10.0 ppm
2nd 20.0 ppm
3rd 30.0 ppm
TWA 0.9 ppm
STEL 4.5 ppm
OVER 30.0 ppm
Alarm permitted
setting range
0.50 to 100.00 ppm 0.50 to 20.00 ppm 0.9 to 30.0 ppm
Response time
*1
(T90)
Within 30 seconds
(Typical: 9 seconds)
Within 30 seconds
(Typical: 6 seconds)
Within 90 seconds
(Typical: 36 seconds)
Alarm reset
operation
Self-latching
Operating
temperature
range
(no sudden
changes)
−40 °C to +60 °C (under temporary use environment for approx. 15 minutes)
−20 °C to +50 °C (under continuous use environment)
−20 °C to +60 °C (under temporary use environment
for approx. 15 minutes)
−20 °C to +50 °C (under continuous use
environment)
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