HTT Series Temperature Transmitter
HTT Series Thermocouple and Thermoresistor Temperature Transmitters utilize a two-wire transmission method (two wires serving as both power input and signal output). They convert thermocouple and thermoresistor signals into a 4-20mA output signal that is linear with either the input signal or the temperature signal. This enables long-distance transmission of temperature data, precise control, and centralized monitoring. As a new-generation temperature measurement instrument, it can be widely applied in process control scenarios across industries such as metallurgy, petroleum, chemical engineering, power generation, light industry, textiles, food processing, and pharmaceuticals.
Product Advantages and Features
- Features a silicone rubber sealing structure, making it shock-resistant, moisture resistant, and suitable for installation in harsh field environments;
- Installed on-site within the junction box of thermocouples or thermoresistor, it directly outputs 4-20mA. This eliminates the need for costly compensation cables while enhancing signal immunity to interference during long-distance transmission;
- The thermocouple temperature transmitter incorporates automatic cold junction compensation;
- High accuracy, low power consumption, wide operating temperature range, and stable, reliable performance;
- Versatile application: can form an integrated field installation structure with thermocouples or thermoresistor, or serve as a functional module within detection equipment;
- Multiple communication options available, supporting LoRaWAN, NB-IoT, 4G, RS485, 4-20mA, and other protocols;
- Supports Modbus and HART communication protocols for seamless integration with PLC, DCS, SCADA, and other industrial control systems;
- Supports 3.6V battery power supply or external DC 9V~36V power supply;
- Temperature measurement accuracy: ±0.1℃ to ±0.5℃ , repeatability ≤ 0.1%
Product Advantages and Features
| Categories | Parameter Details |
| Measurement Range | -40° C to 150° C (default) |
| Measurement Accuracy | ±0.1° C to ±0.5° C |
| Full-Scale Temperature Drift | ≤0.1° C/year |
| Response Time | ≤18 seconds (1 m/s wind speed) |
| Communication Method | LoRaWAN, NB-IoT, 4G, RS485, 4-20mA |
| Power Supply Method | Pin Lithium-Thionyl chloride (Li-SOCI₂) 3.6V (38Ah) / Nguồn DC 9V~36V |
| Battery Life | Battery Life: ≥ 5 years at ambient temperature, ≥ 18 months at -30℃ |
| Protection Rating | IP65 |
| Explosion-Proof Rating | Exd IIC T6 Gb (Optional) |
| Operating Temperature Range | -40°C ~ 80°C |
| Relative Humidity | 0%~95%RH (Non-condensing) |
| Housing Material | 304 Stainless Steel/Aluminum Alloy |
| Mounting Interface | M20×1.5 External Thread (Default), G1/2 Optional |
| Display Method | LCD Digital Display (Temperature / Battery / Signal Status) |
| Reporting Interval | 1 min to 1440 min (Configurable) |
| Data Storage | Supports Local Caching of 1000 Historical Data Points |
| Output Characteristics | Output is Linear with Corresponding Temperature |
Armored shell 2088 shell
Technical Parameters
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| District Heating | Electric Power & Energy | Oil, Gas & Chemicals |
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| Light Industry & Textiles | Food & Pharmaceuticals | Metallurgical Equipment |
