TEMPERATURE MEASUREMENT SOLUTIONS
Temperature Sensors & Transmitters
Industrial thermocouples, RTD sensors, temperature transmitters, and bimetallic thermometers for process temperatures from -200 to 1800°C. Available in sheathed, assembled, and explosion-proof configurations with 4-20mA, RS485, and HART outputs.
Complete Temperature Measurement Solutions
HMK manufactures a full range of industrial temperature instruments covering thermocouple, RTD, transmitter, and mechanical thermometer technologies. Our products serve applications from cryogenic storage at -200°C to high-temperature furnaces at 1800°C, with sensing elements, protection tubes, and signal conditioning designed to work together as integrated measurement systems.
Each product line is available in multiple configurations — sheathed designs for compact installations, assembled types with replaceable elements for easy maintenance, and explosion-proof versions certified for hazardous areas. Head-mounted and rail-mounted transmitters convert sensor signals to standard 4-20mA or digital outputs for direct integration with PLCs, DCS, and SCADA systems.
Industrial Thermocouples
Type K, J, T, N, E, S, R, and B thermocouples for temperatures from -200 to 1800°C. Available in sheathed, assembled, and explosion-proof configurations.
Sheathed Thermocouples
Mineral-insulated Type K/J/T/N/E/S/R/B thermocouples with 316L SS or Inconel 600 sheath. Temperature range -200 to 1300°C. Fast response, high vibration resistance.
Assembled Thermocouples
Modular industrial thermocouples with replaceable sensing elements. Junction box or connection head mounting. Suited for furnaces, reactors, and pipelines.
Explosion-Proof Thermocouples
NEPSI-certified dII BT4/CT5 explosion-proof thermocouples for hazardous environments. Flameproof enclosure with Type K/N/E/J/T elements.
RTD Temperature Sensors
Pt100 and Pt1000 resistance temperature detectors with Class A and Class B accuracy per IEC 60751. Higher accuracy and better stability than thermocouples below 600°C.
Sheathed Thermal Resistance (RTD)
Pt100/Pt1000 mineral-insulated RTD probes. Class A/B accuracy per IEC 60751. Compact design for tight spaces, 2/3/4-wire configurations available.
Assembled Thermal Resistance (RTD)
Modular Pt100 RTD assemblies with thermowell and connection head. Fixed or adjustable insertion length for industrial process monitoring.
Explosion-Proof Thermal Resistance (RTD)
NEPSI-certified explosion-proof Pt100 RTD assemblies for hazardous areas. Flameproof junction box with Class A accuracy option.
Temperature Transmitters
Head-mounted and DIN rail temperature transmitters that convert thermocouple or RTD signals to standard 4-20mA, 0-10V, or RS485 outputs.
SBW Temperature Transmitter
Head-mounted 4-20mA temperature transmitter for TC and RTD inputs. DIN B connection head, ±0.2% accuracy. Replaces long thermocouple cable runs.
HM100 Temperature Transmitter
DIN rail or panel mount temperature transmitter with universal TC/RTD input. 4-20mA or RS485 output, programmable via push buttons or HART.
Explosion-Proof TC/RTD with Transmitter
Integrated explosion-proof temperature assembly with built-in 4-20mA transmitter. One-piece design eliminates separate transmitter installation.
Mechanical Temperature Instruments
Bimetallic dial thermometers for local temperature indication without power supply. Rugged 304 stainless steel construction.
Bimetallic Thermometers
Industrial bimetallic dial thermometers with 304 SS case. Back, bottom, or adjustable angle connection. Ranges from -80 to 600°C.
Temperature Sensor Accessories
Industrial Thermowells (TF Series)
Protective thermowells for RTDs and thermocouples in high-pressure and high-temperature environments. Available in flanged, threaded, and welded configurations. Materials include 304SS, 316SS, and Inconel for demanding process conditions.
Temperature Sensor Selection Guide
Use this comparison to select the right sensor technology for your application.
| Parameter | Thermocouples | RTD (Pt100) | Transmitters |
|---|---|---|---|
| Temperature Range | -200 to 1800°C | -200 to 600°C | Depends on input |
| Accuracy | ±1.5°C (Class 1) | ±0.15°C (Class A) | ±0.2% FS |
| Response Time | Fast (t₀.₅ < 5s) | Moderate (t₀.₅ < 8s) | N/A |
| Stability | Moderate | Excellent | Excellent |
| Output | mV signal | Resistance (Ω) | 4-20mA / RS485 |
| Best For | High temp, fast response | Precision <600°C | Long cable runs |
Frequently Asked Questions
Need Help Selecting the Right Temperature Sensor?
Our temperature measurement engineers can recommend the optimal sensor type, configuration, and mounting for your specific application. Share your process conditions and we will provide a detailed technical proposal.
Our engineers typically respond within 12 business hours with detailed technical specifications and pricing.