Series 940
Series 940
Transmitter / Controller
Specification
Lenntech
[email protected] Tel. +31-152-610-900
www.lenntech.com Fax. +31-152-616-289
Base Unit
–
–
–
Allows active sampling through a Teflon tube employing a vacuum pump
Provides water ingress protection
Allows remote sampling from inaccessible areas (eg. Controlled Atmosphere environments)
– Improved performance in pressure and flow fluctuating environments
Typical application
Short distance remote monitoring for:Low Oxygen environments (3-5% O2)
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
1 (Default)
ID
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
Sampling Pump
12VDC, long life, brushless, diaphram pump
Enclosure rating
IP41 & NEMA 2 equivalent
Enclosure size
230W x 140H x 95D (mm); 9”W x 5½”H x 3¾”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
Example: Series 940 Ozone Monitor
(Format
differs
© Aeroqual Ltd, 2004
All rights reserved
dependent
on
gas)
Aeroqual Limited
January 2005
Ozone Sensor Head Specifications
Sensor Heads
Low
High
Leak
Measurement range
Accuracy
0.000 - 0.500 ppm
< 0.008 ppm (0 - 0.100 ppm)
± 10% (0.100 – 0.500 ppm)
0.001 ppm
Available on Request
0.50 - 20.00 ppm
± 10% (0.20 - 2.00 ppm)
± 15% (2.00 - 20.00 ppm)
0.01 ppm
Available on Request
0.00 - 50.00 ppm
± 20%,
15 seconds after Reset
0.01 ppm
Available on Request
Resolution
Controlled Atmosphere
Version
T90 Response
Sensor type
Operating temperature
range
Relative humidity limit
< 60 seconds (T90)
< 35 seconds (T90)
< 10 seconds
Gas-sensitive semiconductor
-5°C to 50°C; 23°F to 122°F (sensor head and base unit)
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
-20°C to 60°C
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
-20°C to 60°C;
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
< 150s
Sensor type
Gas-sensitive semiconductor
Operating temperature range
0°C to 70°C;
Operating relative humidity range
5 to 95% non-condensating
Approvals
UL 2034, BS 7860
Lenntech
[email protected] Tel. +31-152-610-900
www.lenntech.com Fax. +31-152-616-289
© Aeroqual Ltd, 2004
All rights reserved
Aeroqual Limited
January 2005
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