HCIR Series – Two-Wire Infrared Temperature Sensor
A two-wire 4–20 mA infrared temperature sensor, 0 °C to 500 °C, for long cable runs and industrial sites with strong interference.
Two-wire 4–20 mA makes installation straightforward over long distances. Emissivity can be corrected on the instrument. Ask us for the optical ratio that matches your measuring distance.
Built for long cable runs
Two-wire 4–20 mA
12–24 VDC supply; max. load 750 Ω at 24 VDC.
Long cable runs
Up to about 250 m with 0.2 mm² and about 650 m with 0.5 mm² copper conductors.
On-site emissivity
0.10–1.09, adjustable on the instrument.
Simple mounting
M18×1 thread for direct mounting or with a bracket.
IP65 aluminium housing
Ø59 mm aluminium-alloy housing, IP65 (NEMA-4).
8–14 µm, 0–500 °C
Suitable for targets from around room temperature upwards.
Models and parameters
One standard model family for 0–500 °C two-wire applications.
HCIR remains available. Optical resolution differs across older documents, so it is omitted here — ask us for the ratio that matches your distance. (The HC-IR disc model on the coding list is a separate HC SKU.)
Measurement
| Spectral range | 8–14 µm |
|---|---|
| Temperature range | 0–500 °C |
| Response time | 150 ms (95%) |
| Accuracy | ±1% or ±2 °C, whichever is greater (ambient 23 ±5 °C) |
| Repeatability | ±0.5% or ±1 °C, whichever is greater (ambient 23 ±5 °C) |
| Emissivity | 0.10–1.09, adjustable on the instrument |
Electrical
| Output | 4–20 mA, two-wire |
|---|---|
| Power supply | 12–24 VDC |
| Max. load | 750 Ω (24 VDC) |
Environment & mechanics
| Environmental rating | IP65 (NEMA-4) |
|---|---|
| Ambient operating temp. | 0–60 °C |
| Storage temperature | −20–80 °C |
| Relative humidity | 10–90%, non-condensing |
| Housing | Aluminium alloy, Ø59 mm; M18×1 mounting thread |
| Cable | 1.5 m standard or custom length |
Dimension drawings
Electrical installation
| Wire color | Function |
|---|---|
| Red | Positive (+) |
| Blue | Negative (−) |
| Black | Shield |
- Use shielded twisted-pair cable.
- Copper conductor: 0.2 mm² up to about 250 m, 0.5 mm² up to about 650 m.
- Ground the shield; keep away from motors and heavy power cables when possible.
Where HCIR sensors are used
Long-distance installation
Sensor far from the controller or display — cable runs up to about 650 m.
Strong interference
Industrial environments with strong interference.
General process monitoring
Non-contact monitoring of targets from 0 to 500 °C.
Frequently asked questions
How long can the cable be?
What are the operating conditions?
What is in the box
- HCIR sensor with cable
- 2 fixing nuts
- User manual
Optional accessories
- Adjustable mounting bracket (optional)
- Two-axis adjustable mounting bracket (optional)
- Digital display (optional)
Need help choosing the right range or optics?
Tell us your application and we will reply within one business day. OEM and custom versions are available — see OEM & Custom.