Series 935 Transmitter / Controller
with Temperature Sensor
The Series 935 is supplied in an FRP enclosure, has multiple output capability and can be included into a realtime network of monitors.
Series 935 Base Unit
Temperature and Humidity Sensors | Accuracy | Resolution | Range |
Temperature | ± 0.3 [K] @ 25°C | 0.04 min | -40°C to 124°C |
Humidity | ±1.8% RH | 0.4 min | 0 - 100% |
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 |
Enclosure rating | IP41 & NEMA 2 equivalent |
Enclosure size (with base unit) | 180W x 110H x 90D (mm); 7?W x 4¾H x 3½D (in) |
Enclosure casing | Fibre reinforced polycarbonate |
Weight | < 850 g; < 30 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 | -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) |
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 | < 150 s |
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 |