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Multi-Channel IR Monitoring System RS485/Modbus Outputs

IR Temperature Sensor with RS485/Modbus and 2:1 Optics



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Volume Discount Schedule
Quantity Price each
1-4 C$419.24
5-9 C$398.28
10-24 C$389.89
25-49 C$373.12
50-99 C$364.74
100+ C$356.35

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Lead Time (If not in stock): 6 weeks
IR Temperature Sensor with RS485/Modbus and 2:1 Optics OS-MINIHUB-SN21 OS-MINIHUB-SN21
  • RS485 Modbus Communications
  • Optional touch-screen display for configuration, alarms and datalogging
  • Create a standalone, 6-channel modbus system
  • Build larger systems using the TSD600’s separate modbus

OS-MINIHUB-SN21 Model Options

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Field of View
Process Temprature Range
Accuracy @ Ambient
Operating Temprature range
Laser Output
Built in Display
Cable Length
Supply Voltage
Spectral Response
Response Time
Communication Protocol
Intrisically Safe

The OS-MINIHUB is an industrial infrared temperature monitoring system, with miniature sensing heads and optional display modules. OS-MINIHUB sensors are designed to measure the surface temperature of non-reflective materials in industrial applications, from -20 to 1000°C (-4 to 1832°F). They are sealed to NEMA 4 (IP65), built from 316 stainless steel, and fully tested to industrial EMC standards.

They can measure food, paper, thick plastics, asphalt, paint, bulk materials and organic materials, as well as most dirty, rusty or oily surfaces.


OS-MINIHUB sensors have an operating temperature rating of up to 120°C (248°F) with no need for cooling.


The sensors measure just 45 mm (1.7"") long (plus cable gland), so they can fit into the smallest of spaces.


Up to 6 sensors can be connected to the optional TSD600 interface module, which provides temperature display, configuration, and high-capacity data logging to a MicroSD Card. Analog and relay outputs are available via separate DIN rail mounted modules.

Low Cost

With up to 6 sensors connected to one TSD600, the OS-MINIHUB is an ideal low-cost non-contact temperature measurement system.


To measure more than 6 locations, OS-MiniHUB sensors and TSD600 sub-networks may be connected to an RS485 Modbus SCADA system or PLC. It is possible to measure the temperature of hundreds or thousands of locations on the same network.


The OS-MINIHUB may be installed as a new temperature monitoring system, or integrated into an existing Modbus network. With two Modbus interfaces, the TSD600 makes an ideal local display for a group of sensors as part of a larger system. The OS-MINIHUB-JB6 junction box makes it easy to connect the system together. Never miss a critical temperature event. In condition monitoring applications, the OS-MiniHUB system is an always-on solution that can replace manual checks with a handheld thermometer or expensive thermal imager.

Typical Applications

Curing Ovens Fiberglass impregnated with epoxy is cured in an oven to increase strength. OS-MiniHUB sensors are placed inside the oven at up to 120°C (248°F), to build-up a temperature profile at many points on the entire surface of the workpiece, and to communicate the measured temperature to the heating system that controls the hot air blowers in the oven. Industries include boatbuilding and aerospace as well as many others.

Industrial Bakeries

Check the temperature profile of bakery products at multiple points along a conveyor oven.

Corrugated Board Manufacturing

Monitor the web temperature along an entire corrugator, with local displays for each section of the production line, and centralized monitoring in the control room. Sensors withstand 120°C (248°F), and can be used in hightemperature areas such as single facers without cooling.

Power Distribution

Monitor the temperature of bulbar joints in switchgear cabinets. Hundreds or even thousands of points can be monitored on the same network using the OS-MiniHUB system.


A large system of OS-MiniHUB sensors can monitor the paint curing process at several points. Monitor temperatures around the entire vehicle in environmental test chambers.

Condition Monitoring

A network of OS-MiniHUB sensors can monitor all the bearing temperatures on a machine, a runout table, or the whole factory. The OS-MiniHUB is ideal for measuring the temperature of all painted metal surfaces.

Infrared Curing

Arrays of sensors fitted on a rig of infrared curing lamps ensure an even temperature profile along the part being cured. Surface coatings, paint and epoxy are ideal target materials, among many others.

Gas Cylinder Filling

Monitor temperatures to improve repeatability in the filled volume and improve filling efficiency. The temperature of every cylinder on a filling rig is easily monitored with no need to manually move contact probes.

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Can the sensor wire length be longer? Can I splice a wire to it and make it twenty or thirty feet?

Asked by: Tim505
Hello Tim Yes the wire length can be extended if needed.
Answered by: JA Engineer
Date published: 2020-05-16

What kind of cable does this communicate from?

Asked by: tREY
Hi tREY, Thank you for the inquiry. Terminations accept 18 to 28 awg conductors. You'll need 4 conductors for use with the RS485 communication signal. TX4-100 is an example; 4 conductor 100 ft spool. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-06-21
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Adjustable mounting bracket
0 In Stock
Laser sighting tool
0 In Stock
Dual laser sights and adjustable bracket
0 In Stock
This item is discontinued. Please contact Technical Sales Team for assistance.
Fixed mounting bracket
2 In Stock
Air purge collar for all compact IR sensors except with 2:1 optics
4 In Stock
Air purge collar for 2:1 compact IR sensors
0 In Stock
Protective plastic window
0 In Stock
6 Channel touch screen display
1 In Stock
Panel mounting bracket for TSD600
0 In Stock
Micro SD card for TSD600
15 In Stock
6-Channel RS-485 junction box
0 In Stock
4-Channel analog output module
0 In Stock
12-channel relay output module
0 In Stock
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