Datasheet summary
Series 940 - 945
Engineering summary from PDF text extraction for Series 940 - 945. Verify every value with the OEM datasheet.
Summary
Product identification
- Product Name: Series 940 | 945 Transmitter & Controller
- Gas Measured: Ozone
Features
- Active sampling via Teflon tubing and pump
- Excellent water ingress protection
- Remote sampling from inaccessible areas
- Multiple analog and digital outputs
- Large LED display option
- Real-time network capability
- PC data logging and networking option
- Temperature and RH sensor option (Series 945)
Applications
- Pressure and flow fluctuating environments
- Controlled atmospheres (e.g. produce storage)
- Low oxygen environments (3-5% O₂)
- Indoor air quality (e.g. duct sampling)
- Filtered air sampling
- Sampling outdoor air quality
Ozone Sensor Heads
| Sensor Head | Calibrated Range | Maximum Exposure | Lowest Detection | Accuracy of Calibration | Resolution | Response Time (T90) |
|---|---|---|---|---|---|---|
| Ultra low | 0-0.15ppm | 0.25ppm | 0.001ppm | <±0.005ppm | 0.001ppm | < 70 s |
| Low | 0-0.5ppm | 1ppm | 0.001ppm | <±0.008 < 0.1ppm; <±10% 0.1-0.5ppm | 0.001ppm | < 60 s |
| High | 0.5-20ppm | 25ppm | 0.01ppm | <±10% 0.2-2ppm; <±15% 2-20ppm | 0.01ppm | < 60 s |
(Other gases and calibrations are available – contact Aeroqual for controlled atmospheres)
Operating Conditions
- Temperature: -5°C to 40°C
- Humidity: 5 to 95% RH (non-condensating)
Power
- Supply: 24VDC, 500mA (range 22-26 VDC) (user supplied)
Outputs
- Analogue: 4-20 mA (opto-isolated), 12-24 V
- External signal type: Transistor Output
- External signals (4): Low Alarm | High Alarm | Control | Diagnostics
Inputs
- Standby toggle
Communication
- Protocol: RS485 (Aeroqual proprietary protocol)
Electrical
- Jumpers: J1, J2, J3 termination resistors
- Connectors: Screw
Configuration
- ID: 1 (Default) User configurable from 1 - 255
- Alarm set points (2): User configurable
- Control set point: User configurable
- Removable / replaceable sensor head: Yes
- Sampling pump: Long life brushless DC motor | Diaphragm or Rotary Vane
- Temperature & humidity sensor (Series 945):
- Temperature Range: -40°C to 124°C (-40°F to 255°F)
- Humidity Range: 0 to 100% RH
- Configuration software: PC Configuration Program on CD-ROM (supplied)
- Data logging & networking software: PC Data Logging & Networking CD-ROM (optional product code: R60)
Mechanical / hydraulic
- Enclosure casing: Fibre reinforced polycarbonate
- Ingress Protection: IP41 & NEMA 2 equivalent
- Enclosure size: 230W x 140H x 95D mm (9”W x 5½”H x 3¾”D)
- Weight: < 1100 g (< 1 lb 3 oz)
Approvals
- Part 15 of FCC Rules
- EN 50082-1: 1997
- EN 50081-1: 1992
Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.