Luxtron Fiber Optic Thermometer

4-Channel Fluoroptic® Fiber Optic Temperature OEM Module

Luxtron Fiber Optic Thermometer

Luxtron fiber optic thermometer designed for use with Luxtron range of Fluoroptic® STB and STF fiber optic temperature probes. The m924 OEM Module is one board that contains four fiber optic temperature sensing channels, RS232 ASCII and RS485 Modbus digital output, and 5 to 24 VDC power input connection. The m924 board conditions the measurement signal from Fluoroptic® probes and reports a calibrated temperature to the OEM control system. The custom non-metallic probe sensors are safe in the harsh environments and connect to the m924 board via robust fiber optics.

MRI, RF, R&D and OEM Applications

Suitable for medical magnetic resonance imaging (MRI) and radio frequency (RF) original equipment manufacturers (OEM), implantable medical device testing, and research and development Labs. It has +/-0.05 °C accuracy, up to a 50 Hz sampling rate/channel, and -100 to 330 °C temperature range.

  • MRI and RF Medical Treatment
  • Pacemakers and Implantable Device Testing
  • Temperature Monitoring of Critical Military Equipment and Facilities
  • Temperature Control of Microwave Processes
  • Monitoring of Semiconductor Wafer Temperatures during RF and Plasma Applications

Key features

  • 4 channels, expandable up to 64 channels
  • Probes are suitable for all EMI environments: Plasma, RF, Microwave, Magnetic, High Voltage
  • Single PCB design with RS485 Modus and RS232 ASCII for OEM applications.
  • Options for 0-10 V and 4-20 mA analogue output and metal enclosure for Lab and R&D applications
  • Backward compatible with Luxtron STB and STF probes for Medical and Lab/R&D applications
  • Experienced application support and custom probes for medical and general purpose applications
  • Builds on proven design with thousands of systems installed worldwide


Probe Type STB & STF
Channels 4 or up to 64 with RS485 Modbus
Sampling Rate up to 50 Hz each channel
Temperature Range 0 to 330 °C
Accuracy after Calibration Single Point Calibration: ± 0.5 °C, ± 50 °C of Calibration Point

Three Point Calibration: +/- 0.1 °C over a 100 °C range
(probe dependent)

Custom Calibration (Contact LumaSense): ± 0.05 °C over complete calibration range

Noise < 0.1 °C, (1-sigma STD at 1 Hz)
Operating Temperature Range -40 °C to 85°C
Storage Temperature Range -30 °C to 75 °C
Relative Humidity 80% RH (max.) non-condensing
Measurement Resolution (Digital Output) 0.01 °C
Analog Output 4-20 mA or 0-10 V
Serial Communication RS232 & RS485
Protocol ASCII (RS232) & Modbus (RS485)
Input Voltage 5 – 24 VDC +5%
Overall Dimensions
(Main Board and Main Board with Analog Outputs)
23.7 mm (H) x 100.6 mm (W) x 134.4 mm (L)
Enclosure Dimensions 47 mm (H) x 114 mm (W) x 144 mm (L)

Download m924 OEM Module Datasheet
Download Fiber Optic Probes & Accessories Datasheet