Series 945 Transmitter / Controller
with Temperature Sensor

Series 945 Transmitter / Controller



The Series 945 is supplied in an FRP enclosure, has multiple output capability and can be included into a realtime network of monitors.





Base Unit

Temperature and Humidity Sensors Accuracy Resolution Range
Temperature 0.3 [K] @ 25C 0.04 min -40C to 124C
Humidity 1.8% RH 0.4 min 0 - 100%


Typical application Short distance remote monitoring for:-
. Low Oxygen environments (3-5% O 2 )
. Indoor air quality - duct sampling
. Filtered air sampling
Power (user supplied) 24VDC, 500mA (range 22-26 VDC)
Analogue output 4-20 mA (opto-isolated), 12-24 V
External signal type Transistor Output
External signals 4
External signal functions Low Alarm, High Alarm, Control & Diagnostics
LED Display (Optional)
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 points User configurable
RS485 protocol Aeroqual proprietary product
Removable / replaceable sensor head Yes
Sampling pump 12VDC, long life, brushless, diaphram pump
Enclosure rating IP41 & NEMA 2 equivalent
Enclosure size (with base unit) 230W x 140H x 95D (mm); 9"W x 5"H x 3"D (in)
Enclosure casing Fibre reinforced polycarbonate
Weight < 1100 g; < 1 lb 3 oz
Approvals Part 15 of the FCC Rules
EN 50082-1: 1997
EN 50081-1: 1992

Ozone Sensor Head Specifications

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 Available on Request Available on Request Available on Request
Version
T90 Response < 60 seconds (T90) < 35 seconds (T90) < 10 seconds (T90)
Sensor type Gas-sensitive semiconductor
Operating temperature range -5C to 50C; 23F to 122F (sensor head and base unit)
Relative humidity limit
95% maximum (sensor head and base unit)

VOC Sensor Head Specification*

Measurement range 0 to 400 ppm toluene
Accuracy < +/- 10 ppm (0 - 200 ppm)
< +/- 10% ( > 200 ppm)
T90 response < 60 s
Sensor type Gas-sensitive semiconductor
Operating temperature range -20C to 60C
Operating relative humidity range 5 to 95% non-condensating

* Specific Calibrations to other VOC's available - contact Aeroqual Sales

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 -20C to 60C
Operating relative humidity range 5 to 95% non-condensating

CO Sensor Head Specification

Measurement range 0 to 2000 ppm carbon monoxide
Accuracy < +/- 10 ppm in the range 0 to 400 ppm
T90 response < 150 s
Sensor type Gas-sensitive semiconductor
Operating temperature range 0C to 70C
Operating relative humidity range 5 to 95% non-condensating
Approvals UL 2034, BS 7860

Additional product Information

Sensor Head Spec. sheet