APSA-370/CU-1

Ambient Hydrogen Sulfide Monitor

APSA-370/CU-1 Ambient H₂S monitor measures SO₂ converted H₂S through oxidation catalyst based on Ultra Violet Fluorescence. In order to reduce measurement error by water concentration fluctuatin in ambient, humidifier is set at sample line. It enables long-term stability according to stabilizing catalytic reaction.

Segment: Process And Environmental

Division: Ambient

Manufacturing Company: HORIBA, Ltd.

Base product: AP-370 series

Monitor H₂S with high sensitivity range in ambient air continuously.
Set humidifier at sample line to satbilize catalytic reaction.

Related Applications

Measurement component	Hydrogen sulfide (H₂S) in ambient air
Measurement principle	Oxidation catalyst + Ultra Violet Fluorescence
Measurement range	0-0.1/0.2/0.5/1.0 ppm
Lower detectable limit	2 ppb
Repeatability	±3.0% of F.S.
Linearity	±2.0% of F.S.
Zero drift	±2% of F.S./day
Span drift	±5% of F.S./day
Response time (T₉₀)	180 sec. or less (from CU-1converter unit)
Sample gas flow rate	approx. 0.7L/min
Operation gas	None
Indication	Measuring value, alarm
Alarm	APSA-370: Calibration error, Battery error, Flow rate error, Pressure error, Temperature error in catalyzer, etc. CU-1: Temperature error in catalyzer
Inpt/Output	0-1V/0-10V/4-20mA (2 systems: either (1) momentary value and integrated of (2) moving average value) Contact input/output RS-232C (option)
Temperature/Humidity	0-40°C / 85% or less
Power	100/110/115/120/220/230/240 VAC, 50/60Hz
Power consumption	APSA-370: 150VA CU-1: 150VA
Dimension	APSA-370: 430(W) x 550(D) x 221(H) mm CU-1: 430(W) x 550(D) x 221(H) mm
Mass	APSA-370: approx. 19kg CU-1: approx. 10kg