Dielectric Moisture Sensor
Scepter Scientific introduces a non-nuclear, low-cost, instrument for accurately measuring the moisture content of materials. The sensor can be calibrated to measure water height, slurry consistency or moisture content of homogenous materials in contact with the ceramic sensor surface. In the paper and pulp industry, Scepter Scientific‘s moisture gauge provides an intelligent alternative to the gamma backscatter gauge at a much lower cost and without the safety restrictions of a radiation source.
The sensor is designed to provide real time
output for monitoring or closed loop control of the manufacturing process. The sensor
incorporates a high wear ceramic surface for abrasive materials that establishes the
reference plane for water height measurements. Constructed from stainless steel, the self
contained sensor is water tight and designed to withstand the most demanding environmental
conditions.
DMS3010 Sensor Operation
Scepter
Scientific‘s moisture gauge operates by sensing the dielectric of the material in
contact with the sensor surface. Since the dielectric of water is substantially higher
than most other materials, the presence of water will result in a substantial increase in
the dielectric measurement. An innovative measurement technology is employed to prevent
dielectric measurement errors that are introduced by water conductivity or salt content.
The dielectric measurement is then compensated for temperature and calibrated for the
specific measurement material and application. The RS-422 serial output continuously
reports calibrated readings with a full scale measurement accuracy of +/- 2%. An external
4-20mA output module is also available for applications requiring a current loop
interface.
DMS3010 Features
 | Non-volatile calibration parameters |
| Self contained |
| Temperature compensated |
| Calibrated output |
| Intrinsically safe |
| No nuclear regulations |
| Environmentally sealed |
| Abrasive resistant |
DMS3010 Specifications
| Water height 0-1/2 inch |
| Measurement accuracy +/- 2% |
| Moisture content 0-100% |
| RS-422 serial output |
| External 4-20mA output |
| Power requirements 24VDC @ 120mA |
| Temperature range +60 to 0 Deg. C |
