Application Mounted on steep-tank walls, it measures real-time temperature of sulfurous acid steep liquor. Converts readings to standard 4–20mA signal for PLC/DCS central-control systems.

Interlocked with steam-heating-coil regulating valves it maintains steeping temperature steadily within 48–52℃ for closed-loop steeping-process control.

Multi-point installation monitoring of top-/mid-/bottom-tank temperatures to detect thermal stratification and guarantee consistent corn steeping results.

Structural composition

1. Pt100 platinum resistance temperature detector (RTD sensing core) 2. 316L stainless-steel protective thermowell (probe assembly)

3. Integrated temperature-transmitter module

4. Process-connection flange/threaded adapter

5. Waterproof junction box

6. Shielded signal cableWorking principleBuilt upon platinum RTD effect: Pt100 resistance changes linearly with medium temperature.

The transmitter acquires resistance values and converts them into industry-standard 4–20mA current signal for control-system input.

4mA corresponds to range lower limit; 20mA corresponds to range upper limit. The control system modulates steam-valve opening automatically to sustain target steeping temperature.

Operating Conditions & Material Requirements (Corn-Steeping Section)- Medium: Sulfurous acid steep liquor suspended corn particulates.

Mildly corrosive- Operating temperature: 0–80℃; nominal process temperature 48–52℃; atmospheric pressure- Wetted thermowell: 316L stainless steel.

Long-term service with plain 304 is not recommended.- Sensing-element grade: Class-A Pt100 RTD; three-wire wiring to minimize lead-wire error- Output signal: 4–20mA- Mounting: Threaded/flange insertion type.

Probe immersed inside steep liquor; keep clear of agitator- and-heating-coil turbulence zones- Ingress protection: IP65 or higher for humid corrosive workshop environmentsTechnical 1. High-accuracy.

Stable measurements enabling precise steeping-temperature control; temperature deviations directly degrade corn-steeping performance.

Integrated transmitter outputs standard 4–20mA signal with strong immunity against electromagnetic interference from on-site motors and gear reducers.316L thermowell resists sulfurous-acid corrosion and withstands material impingement erosion.

Multi-point layout captures temperature readings at different tank elevations for stratification diagnostics. Built-in fault diagnostics.

Central-control system generates alarms for open-circuit/short-circuit faults.