Hydro-Probe II Microwave Moisture Sensor - Connections
The Hydro-Probe II microwave moisture sensor has a built-in choice of connection options using either analogue or serial. The RS485 serial interface allows up to 16 sensors to connect directly to a control system via a serial communications link. A separate analogue output is available which can be configured to 4-20mA, 0-20mA (0-10V) for connection to a control system or current loop meter. The Hydro-Probe II has one configurable digital input and one configurable digital input / output.
There are various options for interfacing between the sensor and the control system using a Hydronix approved Ethernet, USB or RS232/RS485 adapter. Alternatively, the Hydro-View moisture display can be used to provide real time on-line process measurements including both moisture and temperature. In it's simplest configuration the analogue output from the Hydro-Probe can be connected to a Scaleable Current Loop Display to display the current moisture. These different options provide the plant manager with the flexibility to select the most suitable method of connection for their own control system.
Hydro-Probe II Connection Options
Input / Output Connections
Cabling
Hydronix supplies various cable lengths incorporating the required 10 way MIL-SPEC connector. This enables the sensor signal to be sent to a Control System or PC for configuration and calibration.
Recommended field cabling:
- Six pairs twisted (12 cores total) screened (shielded) cable with 22 AWG, 0.35mm2 conductors
- Screen (shield): Braid with 65% minimum coverage plus aluminium/polyester foil
- Recommended cable types: Belden 8306, Alpha 6373
- Maximum cable run: 100m, separate to any heavy equipment power cables
