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S900 Transmitter-Controller

( 新西兰 Aeroqual )

Base Unit
Power (user supplied)	Regulated 12 VDC, 800 mA
Analogue output	4-20 mA (opto-isolated), 10-30 V
External signal type	Transistor Output
External signals	4
External signal functions	Low Alarm, High Alarm, Control & Diagnostics
Inputs	Standby toggle
Communication	RS485
Jumpers	J1, J2, J3 termination resistors
Connectors	Screw
ID	1 (Default) User configurable from 1 - 255
Alarm set points (2)	User configurable
Control set point	User configurable
RS485 protocol	Aeroqual proprietary product
Removable / replaceable sensor head	Yes
Enclosure rating	IP20 & NEMA 1 equivalent
Enclosure size (with base unit)	64 H x 130 Ø (mm); 2½ H x 5? Ø (in)
Mounting	Screw fixture
Weight	< 200 g; < 7 oz
Approvals	Part 15 of the FCC Rules EN 50082-1: 1997 EN 50081-1: 1992

Sensor Heads	Low	High	Leak
Measurement range	0.000 - 0.500 ppm	0.50 - 20.00 ppm	0.00 - 50.00 ppm
Accuracy	< 0.008 ppm (0 - 0.100 ppm) ± 10% (0.100 – 0.500 ppm)	± 10% (0.20 - 2.00 ppm) ± 15% (2.00 - 20.00 ppm)	± 20%, 15 seconds after Reset
Resolution	0.001 ppm	0.01 ppm	0.01 ppm
Controlled Atmosphere Version	Available on Request	Available on Request	Available on Request
T90 Response	< 60 seconds (T90)	< 35 seconds (T90)	< 10 seconds
Sensor type	Gas-sensitive semiconductor
Operating temperature range	-5°C to 50°C; 23°F to 122°F (sensor head and base unit)
Relative humidity limit	95% maximum (sensor head and base unit)

Ammonia Sensor Head Specification

Measurement range	0 to 1000 ppm
Accuracy	< +/- 5 ppm (0 – 100 ppm) < +/- 10% (100 – 1000 ppm)
T90 response	< 60 s
Sensor type	Gas-sensitive semiconductor
Operating temperature range	-20°C to 60°C;
Operating relative humidity range	5 to 95% non-condensating

CO Sensor Head Specification

Measurement range	0 to 1000 ppm
Accuracy	< +/- 5 ppm (0 – 100 ppm) < +/- 10% (100 – 1000 ppm)
T90 response	< 60 s
Sensor type	Gas-sensitive semiconductor
Operating temperature range	-20°C to 60°C;
Operating relative humidity range	5 to 95% non-condensating