Series 940 Transmitter / Controller
with Temperature Sensor
The Series 940 is supplied in an FRP enclosure, has multiple output capability and can be included into a realtime network of monitors.
Specifications
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% 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 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 |
| 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 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 |
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 |
