M-Sens 2 – Online Humidity Measurement
ClampFlow system was developed for the measurement of small flow rates under pneumatic conveying inflexible hose lines.
The ClampFlow transcieves an electromagnetic wave sent into the pipe is reciprocally acting with the solid particles. These signals are evaluated in frequency and amplitude.
The measurement of the solids speed is done by means of correlation. Two measuring points are used for the generation of the correlation signals. A complete measuring unit consists of the sensor (clamping the pipe) and the evaluation unit. Software to calibrate the system is also provided, then a laptop provided by the customer is also needed.
- Humidity ranges 0 … 65 % (depending on material)
- Measurement accuracy 0.1 %
- Online humidity measurement
- Independent of the material flow
- Temperature-resistant up to 120 °C
- ATEX-certified
- Recording of surface humidity and capillary humidity
What do you want to do?
Technical Data
| Sensor | Ambient Air Temperature | -25 … +55 °C |
|---|---|---|
| Stack Gas Temperature | 250 °C standard or 400 °C option | |
| Stack Connection | 1½ BSP | |
| Enclosure Rating | IP 65 | |
| Power Requirements | 100 … 24 V AC or 24 V DC | |
| Outputs (Standard)Optional | 4 … 20 mA (500 Ω) Warning alarm relay (SPST 1 A @ 24 V DC) Emission alarm relay (SPST 1 A @ 24 V DC)RS 232 ModBus Rs 485 ModBus – enables use of PC-ME Dust Tools PC software suite |
|
| Inputs | Plant stop signal (output to zero when plant is off) marker for start of bag cleaning sequence |
|
| External LEDs x3) | 1 Power / sensor OK 2 Warning and limit alarm 3 Self check status (options) |
|
| User Set Up | 4 digit display and set up buttons (external keypad and display option) | |
| Cable Entries | 3 x M20 gland/conduit entries | |
| Air purge Connection | Optional air purge fitting is required, ¼ BSP connection to instrument air line | |
Test
The M-Sens 2-sensor works with precise high-frequency measurements and direct digitalisation of the measurement values and thus a high resolution.
Since the surface and capillary humidity of a material has a strong influence on its dielectric constant, the humidity can be determined exactly given a constant medium bulk density. By way of support, any fluctuations of the measuring value caused by the bulk density are balanced through an internal filter function. Temperature-related fluctuations of the measuring value are automatically compensated by the sensor. The calibration of the system can easily be carried out by the operator. On the installed system, the calibration is a matter of pushing a button and entering the humidity reference value.
Application Examples
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