HM100 Integrated Temperature Transmitter
Factory-calibrated 4-20mA temperature transmitter with universal thermocouple and RTD input. True 2-wire operation with ±0.1% accuracy and optional explosion-proof certification.
±0.1% Accuracy 4-20mA Output 2-Wire Operation Ex-Proof Options Universal Input IP65 Rated
Why Choose HM100 Integrated Temperature Transmitter?
Need help choosing the right configuration? Before specifying an HM100 head-mount transmitter, review our industrial temperature sensor selection guide for a two-stage decision framework that walks through sensing element class and assembly type.
Integrated Design
Sensor and transmitter pre-calibrated as a single unit—no extra setup required. Delivers consistent ±0.1% accuracy across the entire measurement range.
True 2-Wire
Standard 4-20mA operation requires only two wires for both power and signal. Reduces installation complexity and wiring costs in demanding field environments.
Explosion-Proof
Available with ATEX certification (dIIBT4, dIICT5, dIICT6, iaIICT6) for safe operation in hazardous gas, vapor, and dust environments.
Universal Input
Supports thermocouple types K, N, E, J, T, S, R, B and RTD Pt100. Single device handles multiple sensor types—simplifies inventory management.
Industrial Grade
316L stainless steel, IP65 protection, and certified performance in harsh chemical and corrosive environments. Built for decades of reliable service.
Smart Options
Optional HART protocol for two-way device communication and remote configuration. Available with LCD/LED display for local indication.
Technical Specifications
| Parameter | Specification |
|---|---|
| Temperature Range (Thermocouple) | -200°C to +1300°C |
| Temperature Range (RTD Pt100) | -200°C to +500°C |
| Output Signal | 4-20mA (standard) | 0-10mA (optional) |
| Accuracy | ±0.1% | ±0.2% | ±0.5% of calibrated span |
| Power Supply | 24V DC ±10% |
| Load Resistance | (4-20mA) ≤250Ω | (0-10mA) ≤500Ω |
| Transmission Distance | Up to 1000m |
| Response Time (Φ16 Sheath) | <24 seconds |
| Response Time (with Thermowell) | <120 seconds |
| Sheath Materials | 304 SS, 316L SS, Inconel 600, Hastelloy C276 |
| Sheath Diameter | Φ4, Φ6, Φ8, Φ10, Φ12, Φ16 mm |
| Insertion Length | 250~2150 mm (customizable) |
| Process Connection | Fixed screw thread | Fixed flange | Straight pipe joint |
| Protection Grade | IP65 |
| Explosion-Proof | dIIBT4, dIICT5, dIICT6, iaIICT6 (optional) |
| Insulation Resistance | ≥50MΩ at 100VDC |
| Operating Environment | -25°C to +80°C, humidity 5~95% RH |
| HART Communication | Optional (smart model) |
| Display | LCD/LED (optional) |
| Standards | IEC 584, IEC 60751, GB/T26786-2011, CE, Ex (ATEX optional) |
Key Features
Factory-Calibrated Integration
Sensor and transmitter are calibrated as a single integrated unit, ensuring maximum accuracy and eliminating setup errors in the field.
True 2-Wire Operation
Standard 4-20mA output requires only two wires for both power supply and signal transmission—reduces wiring complexity in field installations.
Explosion-Proof Options
ATEX certified (dIIBT4, dIICT5, dIICT6, iaIICT6) for safe operation in hazardous areas with explosive gas, vapor, or dust atmospheres.
Universal Sensor Input
Accepts all thermocouple types (K, N, E, J, T, S, R, B) and RTD Pt100 sensors. One device replaces multiple single-purpose transmitters.
Rugged Industrial Design
316L stainless steel construction with IP65 protection rating. Designed to withstand harsh chemical, corrosive, and high-temperature environments.
HART Communication
Optional HART protocol for two-way communication and remote device configuration. Available on smart model variants.
Industry Applications
Oil & Gas
Wellhead temperature monitoring, refinery process control, pipeline integrity testing, and downhole thermal measurements in extreme pressure/temperature conditions.
Chemical/Petrochemical
Reactor temperature monitoring, distillation column control, heat exchanger performance tracking, and corrosive liquid process management.
Food & Beverage
Pasteurization and sterilization process control, fermentation tank monitoring, cold chain management, and steam system temperature tracking.
Metals & Glass Manufacturing
Furnace temperature control, annealing process monitoring, molten metal measurement, and kiln management in extreme thermal environments.
HVAC & Building Automation
Chiller/boiler monitoring, zone temperature control, supply/return temperature differential measurement, and demand-controlled ventilation systems.
Pharmaceutical
Cleanroom environment monitoring, pharmaceutical process validation, incubator/refrigerator temperature surveillance, and stability testing chambers.
Model Code & Ordering Guide
Example: HM100 – K – F – Φ8 – 300 – dIIBT4 – LCD
| Position | Parameter | Options |
|---|---|---|
| 1 | Model | HM100 (standard) |
| 2 | Sensor Type | K, N, E, J, T, S, R, B (Thermocouple) | Pt (RTD) |
| 3 | Output | F (4-20mA) | O (0-10mA) |
| 4 | Sheath Diameter | Φ4, Φ6, Φ8, Φ10, Φ12, Φ16 mm |
| 5 | Insertion Length | 250–2150 mm (customizable, e.g., 300, 500, 1000) |
| 6 | Protection | – (none) | dIIBT4 | dIICT5 | dIICT6 | iaIICT6 |
| 7 | Display | – (none) | LCD | LED |
Frequently Asked Questions
Ready to Upgrade Your Temperature Measurement?
Our engineering team will help you select the ideal HM100 configuration for your application—whether you need explosion-proof ratings, custom sheath materials, or HART communication.
We’ll respond with detailed technical specifications, pricing, and delivery estimates within 12 business hours.
Cross-check HM100 Readings with Our Free TC Calculator
When commissioning an HM100, it is useful to compare the smart-transmitter output against the raw IEC 60584 EMF tables. Our free calculator converts mV ↔ °C for all 8 thermocouple types with selectable CJC modes — same math the HM100 runs internally, exposed for your bench-test workflow.