horiba APNA-370, Operation Manual, Page: 104 / 113

10 APPENDIX
92
10.3 Specification
Model APNA-370
Measurement target Nitrogen oxides (NOx, NO
2
, and NO) in atmospheric air
Measuring principle Cross modulation type chemiluminescence method
Range
Standard 0 ppm to 0.1/0.2/0.5/1.0 ppm Automatic range switching
Optional Max. 5 ranges between 0 and 0.1/10 ppm, Maximum range ratio: 10
Minimum detection
sensitivity
For ranges of 0.2 ppm or less: 0.5 ppb (2

)
For ranges exceeding 0.2 ppm: 0.5% (2

) of the full scale
Reproducibility
(repeating accuracy)
±1.0% of the full scale
Linearity
(readout error)
±1.0% of the full scale
Zero drift
±1.0% of the full scale/day
±2.0% of the full scale/week (ambient temperature change: within 5°C)
Span drift
±1.0% of the full scale/day
±2.0% of the full scale/week (ambient temperature change: within 5°C)
Response rate 120 s or shorter (T
90
from the inlet)
Interference effect
Moisture 2.5%: Zero ±2.0% of the full scale
Span ±3.0% of the full scale (for ranges of 0.2 ppm or less)
NH
3
1 ppm: For ranges of 1 ppm or less: ±4 ppb
For ranges exceeding 1 ppm: ±1.0% of the full scale
Sample collection
rate
Approximately 0.8 L/min
Display Measured value, alarm, time, alarm history, calibration history, etc.
Alarms Zero calibration, Span calibration, Converter temperature, etc.
Input/output
0 V to 1 V
(2 lines of momentary and rolling average values or average values)
Contact input/output
(range, alarm, etc.)
RS-232C (optional)
Ambient temperature 5°C to 40°C
Ambient humidity
For lower than 31

C, the relative humidity must be 80% or lower.
For temperatures between 31

C and 40

C, the relative humidity must be below a linearly
declining range from 80% at 31

C to 50% at 40

C.
Altitude 3000 m above sea-level, or lower
Power source
100, 115 V ±10 V AC 50/60 Hz, or
220, 230, 240 V ±10 V AC 50 Hz (depending upon the specifications)
Power consumption Approximately 170 VA in steady state, approximately 220 VA in maximum
External dimensions 430 (W)

221 (H)

550 (D) mm
Mass Approximately 21 kg
Connections
Sample inlet: Joint for 6 mm O.D./4 mm I.D. Teflon tube
Calibration gas inlet: Joint for 6 mm O.D./4 mm I.D. Teflon tube
Exhaust gas: Joint for 6 mm O.D./4 mm I.D. Teflon tube