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Testo 6631 humidity/temperature transmitter for greenhouses
Item #:
XXYY-0555-6631
Brand:
Testo
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6631 humidity/temperature transmitter for greenhouses by Testo
The testo 6631 transmitter was developed specially for monitoring critical ambient conditions in greenhouses, e.g. for bio research purposes. Precise and reliable humidity measurement is indispensible in these applications, in order to avoid costs caused by failed experiments.
Process security and system availability, among the most important factors in experimental plants, are supported by a number of properties of the testo 6631 bio research transmitter.
- P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
- Integrated ventilator allows targeted flow impact onto the sensor, enabling the recording of an averaged climate inside the greenhouse cell
- Quick and easy ventilator replacement with ventilator drawer assembly and plug-in connection
- Easy exchange of sensor filter
- Protection of the electronics and sensor from humidity influences (e. g. sprinkler)
Delivery Scope
- testo 6631 humidity/temperature transmitter (measuring indicator) for greenhouses and laboratories with selectable signal outputs including instruction manual
- Optionally with display
| Humidity | |
| Units | %RH |
| Measuring range | 0 to 100 %RH (not for high humidity processes) |
| Measurerment uncertainty* | ±2.5 %RH (0 to 90%); 4.0 %RH (90 to 100%) |
| Sensor | Testo humidity sensor, plug-in; exchangeable by customer, subsequent 2-point adjustment required |
| Response time | Humidity max. 5 sec. (t63) (with protective cap and ventilator in operation) |
| Temperature | |
| Units | °C/°F |
| Measuring range | -10 to +60 °C (observe operating temperature) |
| Measurerment uncertainty | ±0.5 °C |
| Sensor | NTC |
| Inherent warming | 0.6 °C (with M01 and M03) |
| Response time | Temperature max. 20 sec. (t63) (with protective cap and ventilator in operation) |
| Analog outputs | |
| Quantity | 2 channels (humidity and temperature) |
| Output type | 4 to 20 mA (2- or 4-wire) |
| Measurement rate | 1/s |
| Resolution | 12 bit |
| Max. load | <500 Ω |
| Further outputs | |
| Digital | Mini DIN for P2A software |
| Supply | |
| Voltage supply | 24 V ±10% |
| Current consumption | <1A (ventilator + transmitter) |
| Connection | 2-wire plug manufacturer (Euchner) 4-wire plug manufacture (TuchelAmphenol) |
| Design | |
| Material / colour | Plastic/white, UV-proof, high chemical resistance |
| Dimensions | 105 x 139 x 225 mm |
| Weight | 0.8 kg |
| Display | |
| Display | Optional: 2-line LCD with clear text line |
| Resolution | 0.1 %RH or 0.1 °C/°F |
| Operation | |
| Parameterization | via P2A software |
| Miscellaneous | |
| Protection class | Transmitter IP65; housing IP33 |
| EMC | EMC DIN EN 61000-6-2 (interference susceptibility) and DIN EN 61000-6-3 (interference emission) |
| Operating temperature (sensor) | 0 ... +50 °C |
| Storage temperature | -20 ... +70 °C |
| Max. volume flow | 46.80 m3/h; 13 l/s |
| Noise level (unobstructed) | 30 dB(A) |
| Life expectancy | 37,000 h (40 °C) |
| Ventilator housing / vane | Metal / metal |
| Bearing system | Plain bearing |
| Service | Ventilator installed in lower section with plug-in connection, in order to be exchangeable in case of service |















