testo 6631 – moisture transmitter for greenhouse applications
Especially for monitoring critical environments in greenhouses
- Testo's highly accurate and long-term stable moisture sensor
- -10...60°C
- 0...100%RH
testo 6631 - moisture transmitter for greenhouse applications
The testo 6631 humidity transmitter has been specially developed for monitoring critical environments in greenhouses, and for research purposes. Accurate and reliable moisture measurements are indispensable in these programs, to avoid costs caused by failed experiments. Process safety and system availability are among the most important factors in experimental facilities.
The main benefits
- Testo's highly accurate and long-term stable moisture sensor
- Robust enclosure
- -10...60°C
- 0...100%RH
- IP65
- Configuration, adjustment and analysis via the PC program P2A (accessory).
- Supply 20...30 V
- 4 ... 20 mA (2 or 4-wire)
- Display (accessory)
- Long-term stability and reliability thanks to the accuracy of the Testo humidity sensor
- The integrated fan allows the directional flow impact on the sensor and helps to determine the average value in the greenhouse compartments.
- Thanks to its practical design, it protects its electronics and sensors from variations in humidity (e.g. sprinklers, irrigation, etc.).
Contact us for prices and more information
| Enclosure | ABS, White UV safe plastic with high resistance to chemicals |
| Size | 81x81x26mm |
| Protection class | IP65 |
| Operating temperature | Electronics (instrument housing) -20...+70°C Display: ±0...+50°C |
| Screw connection | The connection is made via terminal block at the top. |
| Moisture sensor | Testo moisture sensor |
| Temperature sensor | NTC sensor |
| Measurement range | Humidity: 0...100 %RH Temperature: -10...60°C |
| Adjustment points | 11,3%RH, 75,3%RH and that the analog output can also be adjusted" |
| Accuracy : | |
| Moisture | ±2.5 %RH (0...90%RH) ±4 %RH (90...100%RH) |
| temp | 0,5°C |
| Analog output: | Temperature: 4 to 20 mA (2- or 4-wire) Humidity: 4 to 20 mA (2- or 4-wire) |
| Power supply | With analog output: 24VDC ±10% With volt output: 20...30VDC |
| Standards | EMC DIN EN 61000-6-2 (Immunity) and DIN EN 61000-6-3 (Emission) |
| Internal fan | Max flow: 46.80 m³/h / 13 l/s Fan lifetime: 37,500 h (40 °C) |
-
Teflon filter for humidity sensors 12 mm
770 SKU 0554 0756Teflon filter for humidity sensors Ø 12 mm. Screwed to the sensor. Protects against dirt, particles, corrosives and high air speeds. Also suitable at high moisture levels.
-
Metal filters
1 028 SKU 0554 0641Robust metal sinter filter for humidity sensors Ø 12 mm. Screwed to the sensor. For measurements at high air speeds or high temperatures.
-
Mesh filter for humidity sensors
1 260 SKU 0554 0757Protective filter (mesh) for humidity sensors with a diameter of 12 mm. Protects the sensor from dirt and damage.
