Home / Products / HC Compact Series

HC Compact Series

HC Compact Series – Compact Infrared Temperature Sensor

Compact M18 stainless-steel infrared probes covering −20 °C to 1800 °C across IL, IR, LT, IN and SI models.

Cost-effective compact sensors with multiple wavelengths — 8–14 µm, 1.6 µm and 1.0 µm — matched to low-, medium- and high-temperature targets. Standard coding SKUs use a 5-wire output and 1.5 m cable.

Request a Quote View specifications

HC Compact Series stainless steel infrared temperature sensor with M18x1 thread

−20…1800 °C

Standard ranges (coding list)

up to 120:1

Distance-to-spot ratio

10 ms

Response time (IN / SI)

IP65

NEMA-4, stainless steel

5-wire · RS485

1.5 m cable standard

Key features

Simple to install, simple to integrate

Stainless steel housing

Stainless steel housing and reliable optics; M18×1 thread on most models (IR: M20×1 disc housing).

Multiple wavelengths

8–14 µm (IL / IR / LT), 1.6 µm (IN) and 1.0 µm (SI).

IP65 (NEMA-4)

IP65 (NEMA-4) housing for industrial sites.

Wide temperature coverage

Coding-list ranges from −20 °C to 1800 °C across models; ranges can be factory-customized.

Digital option

HCLT485 provides RS485 Modbus RTU directly.

Fast response on high-temp models

IN / SI response time 10 ms; IL / IR / LT typically 150 ms.

Specifications

Models and parameters

Models from the current standard coding list, selected by wavelength, range and optics.

Model	IL	IR	LT	IN	SI
Wavelength	8–14 µm	8–14 µm	8–14 µm	1.6 µm	1.0 µm
Temperature range (°C)	−20–600	0–500	−20–800	300–800 400–1200 500–1600 600–1800	700–1700
Distance-to-spot ratio	15:1	20:1	30:1	80:1	120:1
Response time	150 ms	150 ms	150 ms	10 ms	10 ms
Housing	Stainless steel, M18×1	Disc housing, M20×1	Stainless steel, M18×1	Stainless steel, M18×1	Stainless steel, M18×1

Swipe sideways to see all models →

Standard models from the current coding list. IN lists four common ranges. D:S for IL / IR / LT from the coding descriptions; IN / SI optics from the series datasheet. Cable 1.5 m standard; 5-wire output.

Measurement

System 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)
Resolution	0.5 °C
Signal processing	Emissivity, average time, peak hold, output temperature range (factory set or via adapter/software)

Environment & mechanics

Environmental rating	IP65 (NEMA-4)
Ambient operating temp.	0–60 °C
Storage temperature	−20–80 °C
Relative humidity	10–95%, non-condensing
Weight	≈ 120 g

Electrical

Output	5-wire analog (standard coding SKUs); RS485 Modbus RTU on HCLT485
Power (typical)	12–24 VDC (4–20 mA / HCLT485 variants per datasheet)
Cable	1.5 m standard, custom lengths available

HCLT485 – RS485 model

Spectral range	8–14 µm
Temperature range	0–500 °C / −20–800 °C
Optical resolution	30:1
Output	RS485, Modbus RTU
Power supply	5–24 VDC

Optics

Distance-to-spot ratio

For accurate readings the target should be larger than the measuring spot.

HC LT optical diagram, D:S 30:1 — LT — D:S 30:1. Spot examples: 12 mm at 0–220 mm, 17 mm at 500 mm, 25 mm at 750 mm, 38 mm at 1000 mm.

HC IN optical diagram, D:S 80:1 — IN — D:S 80:1.

HC SI optical diagram, D:S 120:1 — SI — D:S 120:1.

Dimensions

Dimension drawings

Most HC models use an Ø18 stainless body with M18×1 thread. Dimensions in mm.

HCLT dimension drawing, M18x1 — Typical HCLT M18×1 housing (see drawing). Other models use similar Ø18 stainless bodies; IR uses a disc housing with M20×1.

HCLT485 dimension drawing, M18x1 — HCLT485 — M18×1 (from HCLT485 manual).

Outputs & wiring

Outputs and wiring

Available outputs

5-wire analog output — standard coding SKUs, 1.5 m cable
Two-wire 4–20 mA — selected variants
RS485 Modbus RTU — HCLT485, 5–24 VDC

HCLT485 cable wire colors

Wire color	Function
Red	Power supply + (5–24 VDC)
Black	Power supply −
White	RS485 +
Brown	RS485 −
Clear	Shield

Standard cable length 1.5 m; special lengths can be customized. Ground the sensor shield properly.

Typical applications

Where HC sensors are used

IL / LT — low and medium temperature

Industrial low- and medium-temperature targets: plastics, packaging, textile, food, power and petrochemical.

IN / SI — medium and high temperature

Heat treatment, furnaces, metal processes; measurement through optical glass and quartz windows on suitable wavelengths.

IR — compact disc housing

Installations that need an M20×1 disc-style housing at 0–500 °C.

FAQ

Frequently asked questions

Which HC model should I choose?

Choose by target temperature and wavelength: IL / IR / LT (8–14 µm) for low and medium temperatures; IN (1.6 µm) and SI (1.0 µm) for medium and high temperatures.

Can HC sensors measure through a window?

The IN and SI models can measure through optical glass and quartz windows.

Is a digital output available?

Yes. HCLT485 provides RS485 Modbus RTU directly.

How large does my target have to be?

The target should be larger than the measuring spot, especially where the target or the sensor may move. At the focus, spot diameter ≈ measuring distance ÷ distance-to-spot ratio (e.g. LT, 30:1: about 17 mm at 500 mm).

Scope of supply

What is in the box

HC sensor with cable (1.5 m standard)
2 mounting nuts
User manual

Accessories

Optional accessories

Mounting bracket — Adjustable mounting bracket (optional).

Two-axis adjustable bracket — Two-axis adjustable mounting bracket (optional).

USB / RS485 adapter for software setup (selected models)
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.

Request a Quote