Home chevron_right Electronic Components & Chips chevron_right Chips chevron_right Sensor Chips chevron_right Capacitive Sensor Chips 
Grain Moisture Sensor GMS1081-C
Grain Moisture Sensor

Grain Moisture Sensor - GMS1081-C

Non-contact measurement of grain moisture and temperature, high reliability, resistant to fumigation and other chemical interference
With temperature compensation, reducing the impact of temperature on capacitance measurement
5V~24V wide voltage supply, reducing voltage drop impact in long-distance transmission
Combining multiple filtering algorithms, output capacitance and moisture content more stable and reliable
Can store and recall fitting coefficients for up to 32 materials corresponding to moisture content
Supports online firmware upgrade
Each node has an independent ID, supports multi-point cascade networking, up to 256 in series
High measurement accuracy, capacitance resolution 1fF, can provide continuous capacitance to characterize grain moisture
Based on MCP1081 multi-channel detection advantages, built-in multiple reference electrodes to offset environmental effects
Software (drive current, amplitude) and hardware (shielded wire, mesh shielding layer) combined to enhance anti-interference

Product Model: GMS1081-C

Product Introduction


Grain Moisture Sensor GMS1081-C (Grain Moisture Sensor) is a capacitive high-frequency dielectric constant measurement, non-contact sensing intelligent sensor, suitable for grain moisture and temperature detection. The sensor embeds a high-precision digital capacitive sensing chip, temperature chip, microprocessor, and algorithm. Typical moisture measurement accuracy reaches ±1%, temperature accuracy ±0.5°C; based on RS485 MODBUS communication protocol, supports online upgrade of sensor firmware and algorithms; supports multi-node cascade for distributed measurement of spatial moisture and temperature changes.



I. Features of Grain Moisture Sensor - GMS1081-C:

Non-contact measurement of grain moisture and temperature, high reliability, resistant to fumigation and other chemical interference
With temperature compensation, reducing the impact of temperature on capacitance measurement
5V~24V wide voltage supply, reducing voltage drop impact in long-distance transmission
Combining multiple filtering algorithms, output capacitance and moisture content more stable and reliable
Can store and recall fitting coefficients for up to 32 materials corresponding to moisture content
Supports online firmware upgrade
Each node has an independent ID, supports multi-point cascade networking, up to 256 in series
High measurement accuracy, capacitance resolution 1fF, can provide continuous capacitance to characterize grain moisture
Based on MCP1081 multi-channel detection advantages, built-in multiple reference electrodes to offset environmental effects
Software (drive current, amplitude) and hardware (shielded wire, mesh shielding layer) combined to enhance anti-interference

Typical moisture accuracy: ±1%
Moisture resolution: 0.01%
Moisture range: 0%~100%
Typical temperature accuracy: ±0.5°C
Temperature resolution: 0.004°C
Operating temperature: -40°C to +85°C
Supply voltage: DC 5V~24V
Communication interface: Modbus RS485 protocol
Baud rate: 38400bps
Power consumption: average operating current 3.97mA@12V (polling every 2 seconds)
Effective detection area: diameter 80mm
Sensor dimensions: diameter 125mm, height 15mm, default 3-meter shielded cable (refer to drawing for detailed dimensions)
Sensor structure: stainless steel frame, stainless steel cover, alumina ceramic base, silicone potting
Mounting method: M6 screw fixing (hole diameter 6.5mm, length 20mm)
Sensor weight: 900g (including 3-meter cable)




II. Applications of Grain Moisture Sensor - GMS1081-C:

Grain moisture

Temperature detection