
This is what makes up a typical system. It lists the components.
| Probe Model # | Maximum Fiber Optic Probe Temp | Max Length | Calibration Accuracy | Compatible Transmitters | Compatible Extension Cables | Application |
| Life Sciences, MRI , MRI safety, Pharmaceutical, Veterinary, Small Animal testing, Low temperature component testing | ||||||
| PRB-100 | 100°C | 10m | ±0.1°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+, FTX-020-OEM | EXT-400 | TSM, Phantoms, MRI Coil Testing , Case, dog and cat rectal measurments, large orthopedic implants, Liquid Temperature Testing, applications for high durability probes |
| PRB-500 | 100°C | 50m | ±0.1°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+, FTX-020-OEM | EXT-400 | Skin, Animal Rectums, Throat, Tail, Cases, Orthopedic Screws, Very Durable Probe, MRI Coil Test, MRI Safety studies, MRI Phantoms |
| PRB-242 | 150°C | 50m | ±0.1°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | MRI Phantoms with Ultralow Artifiact requirments, MRI Safety, lead electrodes, small stents, brains, Focused Ultrasound below 1 MHz |
| PRB-420 | 150°C | 50m | ± 0.15°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Neuro Stimulator Arrays |
| PRB-G20-MRI | 100°C | 50m | ±0.1°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Catheter, Heating |
| PRB-G40-MRI | 100°C | 50m | ±0.1°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Catheter, Heating |
| Microwave and RF - Heating and Drying, Wood Drying, Microwave Cooking, RF and Microwave Component Temperature testing, Material Processing | ||||||
| PRB-G20-2M-ST-C | 250°C | 50m | ±1.0°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Microwave Heating to 250 °C, Electronic Components, Food |
| PRB-G20-2M-ST-HC | 350°C | 50m | ±2.0°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Microwave Heating to 350°C |
| PRB-G40-2M-ST-C | 250°C | 50m | ±1.0°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Microwave Heating to 250°C, Electronic Component Test, Food, Wood Drying |
| PRB-G40-2M-ST-HC | 350°C | 50m | ±2.0°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+ | EXT-400 | Microwave Heating to 350° C |
| High Temperature Material Characterization and High Temperature Microwave Heating | ||||||
| PRB-1000 | 750°C | 5m | ±0.5°C | FTX-100-LUX+HT | EXT-100 | High Temperature Microwave Heating such as Ceramics |
| Focused Ultrasound | ||||||
| PRB-140 | 150°C | 10m | ± 0.10°C | FTX--100-LUX+HG, FTX--200-LUX+HG, FTX--300-LUX+HG | EXT-200 | Focus Ultrasound above 1 MHz |
| PRB-242 | 150°C | 10m | ± 0.10°C | FTX-100-LUX+, FTX-200-LUX+, FTX-300-LUX+, FTX-020-OEM | EXT-400 | Focused Ultrasound below 1 MHz |
| Laser Ablation - Temperature Probes - For laser light 980 nm and up | ||||||
| PRB-521-2M-STM-MRI | 100°C | 15M | ± 0.25 °C | FTX-100-LUX+HGLA , FTX-200-LUX+HGLA ,FTX-300-LUX+HGLA | EXT-500-5M-STM-STM | Laser Ablation Testing |
| PRB-221-2M-STM-MRI | 80°C | 15M | ± 0.15 °C | FTX-100-LUX+HGLA , FTX-200-LUX+HGLA ,FTX-300-LUX+HGLA | EXT-500-5M-STM-STM | Laser Ablation Testing |
Each probe model links to a data sheet.
Select by Maximum Temperature
80, 100, 150, 250, 350, 750
How to Specify Probes by Part Number
PRB-G20-2M-ST-C
PRB is for Probes
G20 is for probe series
2M is 2 Meters. ( probes specified in meters)
ST is for connector style such as ST,STM, HFBR
-C is for temperature Range for this series
The following is the list of probes used in the markets that BioTemp4Life sells. Others are available upon request.
Please use this list to select which product you need.
| Part Number | Model Number | Calibrated Accuracy | Standard Length Other lengths available please specify in meter | Minimum Temperature | Maximum Temperautre | Tip Diameter | Immersion Time Response | Tip Location from end | Minimum Bend Radius | Material | Probes compatible with these Temperature Transmitters |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FGA-0014A | PRB-100-02M-STM | (10° C to 60 °C) +/- 0.10° C | 2 | -40°C | 100° C | 1500 µm | 1.5s | 1-2 mm | 15 mm | Nylon | HTX, FTX |
| FGA-0193A | PRB-500-2M-STM-MRI | (10° C to 60 °C) +/- 0.10° C | 2 | -40°C | 100° C | 1000µm | 0.6s | 1-2 mm | 10 mm | Nylon | HTX, FTX |
| FGA-0213B | PRB-242-2M-STM-MRI | (20° C to 60 °C) +/- 0.10° C | 2 | -40°C | 150°C | 500µm | 180ms | 1 mm | 16mm | ETFE | FTX |
| FGA-0213B | PRB-242-02M-STM-CRYO | (20° C to 60 °C) +/- 0.10° C | 2 | -110°C | 150°C | 500µm | 180ms | 1 mm | 16mm | ETFE | FTX |
| FGA-0214A | PRB-140-2M-STM-MRI | (20° C to 60 °C) +/- 0.10° C | 2 | -40°C | 150°C | 250µm | 150ms | Tip at end | 6mm | ETFE | FTX-HG |
| FGA-0170B | PRB-420-0.1M-HFBR-MRI | (10° C to 60 °C) +/- 0.15° C | 0.1 | -40°C | 150°C | 700µm | 0.25s | Tip at end | 50mm | Polyimide & ETFE | FTX |
| FGA-0010A | PRB-G40-2.0M-ST-C | +/- 1.0 °C | 2 | -40°C | 250°C | 650µm | 250ms | 1-2 mm | 60mm | Polymide tip, PTFE tubing | FTX |
| FGA-0060A | PRB-G40-2.0M-ST-HC | +/- 2.0 °C | 2 | -40°C | 350°C | 650µm | 250ms | 1-2 mm | 60mm | Polymide tip, PTFE tubing | FTX |
| FGA-0009A | PRB-G40-2.0M-STM-MRI | (10° C to 60 °C) +/- 0.10° C | 2 | -40°C | 100°C | 650µm | 250ms | 1-2 mm | 60 mm | Polymide tip, PTFE tubing | FTX, HTX-MRI |
| FGA-0039A | PRB-G20-2.0M-ST-C | +/- 1.0 °C | 2 | -40°C | 250°C | 450µm | 200ms | 1-1.5mm | 30mm | Polymide tip, PTFE tubing | FTX |
| FGA-0061A | PRB-G20-2.0M-ST-HC | +/- 2.0 °C | 2 | -40°C | 350°C | 450µm | 200ms | 1-1.5mm | 30 mm | Polymide tip, PTFE tubing | FTX |
| FGA-0008A | PRB-G20-2.0M-ST-MRI | (10° C to 60 °C) +/- 0.10° C | 2 | -40°C | 100°C | 450µm | 250ms | 1-1.5mm | 30 mm | Polymide tip, PTFE tubing | FTX, HTX-MRI |
| FGA-TBD | PRB-422-35M-STM-L | TBD | 1-35M | -40°C | 150°C | 900 µm | Not rated | 50mm | Black Tefzel jacket with 0.45mm glass fiber core | FTX-HG | |
| FGA-0173A | PRB-1000-0.35M-ST-HT | 350°C to 750°C +/-0.5°C | 0.35M | 0°C | 750°C | 5mm | 30 seconds | Solid-Does not bend | Polyimide and Alumina | FTX-300-LUX+HT, FTX-200-LUX+HT, FTX-100-LUX+HT |
When Specifying a probe, you need the model number, length and connector type:
Other connectors available upon request Please specify any additional tubing over probe for special applications
The following is a comparison of the fiber used to make probes and a few basic probe specifications for outside diameter and Immersion Time Constant.

The above picture shows actual photographs of the fiber embed in a case that compares the fiber used to make probes with a few basic probe specifications, including outside diameter and Immersion Time Constant.
| Design Factor | Effect on Time Constant |
| Smaller thermal mass | Faster (lower τ) |
| Direct fiber exposure | Faster |
| Protective sheathing | Slower (but more robust) |
| Good thermal conductivity | Faster |
| Low heat transfer (e.g., air) | Slower |

ACC-CON-ST-ST (Metallic)

ACC-CON-STM-STM (Non-Magnetic Polymer)

ACC-CON-HFBR-HFBR
OSENSA’s FTX-020-OEM-HT module is the world’s smallest form-factor fiber optic temperature sensor module that easily integrates into OEM applications. It mounts directly to a PCB with a 5-pin header and talks to a microcontroller using either Serial Modbus or SPI protocols. Supported Probe Styles include red LED versions of PRB-G20, PRB-200, PRB-242, PRB-G40, PRB-500, PRB-100 , PRB 100 and PRB-GB3 PRB-G20, PRB-G40, PRB-100, PRB-500 and PRB-GB3. The module also supports many other probes used in the high voltage and power markets. This product is intended for high volume applications. It is a product that requires it to be designed it. It is typically designed into system or medical instruments.

| Part Number | Model Number | Number of Channels | Min Temperature °C | Max Temperature °C | Resolution °C | PCB Mount | Interface | Analog Output (4-20 ma) | Gain | Computer Connector |
|---|---|---|---|---|---|---|---|---|---|---|
| FGA-0110A | FTX-020-OEM-ST-MRI (Red LED, Metal ST | 1.0 | -40.0 | 200.0 | 0.1 | Yes | Serial Modbus or SPI (optional - specify) | No | medium | |
| FTX-020-OEM | 1.0 | -20.0 | 120.0 | 0.1 | Yes | Serial Modbus or SPI (optional - specify) | No | medium | ||
| FTX-020-OEM-HT | 1.0 | -40.0 | 200.0 | Yes | Serial Modbus or SPI (optional - specify) | No | medium | |||
| FGA-0227A | ACC-CBL-USB-2CH-DEV-JIG 2Ch Development USB Cable | 2.0 | USB |
The Osensa Fiber Optic signal conditioner offers exceptional value combined with industry leading speed and accuracy. Whether your application requires one, two, or three sensing channels, the + transmitter is ideally suited for demanding research applications in MRI, microwave, and high electro-magnetic field environments. It can read optical sensors with tip diameters as small as 140 microns over distances up to 50 meters. It connects quickly to your personal computer with a standard USB cable to provide real-time temperature trending and data logging with the optional OSENSA View Pro software or LabView VI. The Optional 4-20mA analog outputs have 16 bit resolution with configurable alarms for easy connection to a PLC, temperature controller, solid state relay, or digital display. Multiple signal conditioners can be connected to a USB Port on the USB Base. Additional Groups of 10 can be used by adding USB Bases and USB Bases. Power can come connector mounted to the DIN rail or to side mount contacts. The computer connection can be with the small USB connector on the top or bottom mounted MODBUS. Temperature transmitter come in different numbers of channels, gains, resolutions and optical paths. Higher gain transmitters may be required for systems with a number of different interconnects due to Optical path losses.

FTX-100 – Single Channel
FTX-200 – Dual Channel
FTX-300 – 3 Channel
There are HT version for high temperature probes above 700C
HGLA for Laser Applications
There are HG versions for PRB-140
Specify Quantity of Temperature Transmitters
| Part Number | Model Number | Channels | Min Temp (°C) | Max Temp (°C) | Resolution (°C) | Top Micro USB | RS-485 | Analog Output (4-20 mA) | Gain | Laser Suitable (980–1064nm) | FUS with Extension | High Temp (>500°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FGA-0049B | FTX-100-LUX+ | 1 | -95 | 450 | 0.01°C | Yes | Yes | Yes | Medium | No | No | No |
| FGA-0050B | FTX-200-LUX+ | 2 | -95 | 450 | 0.01°C | Yes | Yes | Yes | Medium | No | No | No |
| FGA-0051B | FTX-300-LUX+ | 3 | -95 | 450 | 0.01°C | Yes | Yes | Yes | Medium | No | No | No |
| FGA-0149B | FTX-100-LUX+HT | 1 | 0 | 750 | 0.1°C | Yes | Yes | Yes | High | No | No | Yes |
| FGA-0150B | FTX-200-LUX+HT | 2 | 0 | 750 | 0.1°C | Yes | Yes | Yes | High | No | No | Yes |
| FGA-0151B | FTX-300-LUX+HT | 3 | 0 | 750 | 0.1°C | Yes | Yes | Yes | High | No | No | Yes |
| FGA-0058B | FTX-101-XFMR+ | 1 | -50 | 250 | 0.1°C | Yes | Yes | No | High | No | Yes | No |
| FGA-0057B | FTX-201-XFMR+ | 2 | -50 | 250 | 0.1°C | Yes | Yes | No | High | No | Yes | No |
| FGA-0146B | FTX-100-LUX+HG | 1 | -95 | 450 | 0.01°C | Yes | Yes | Yes | High | No | Yes | No |
| FGA-0148B | FTX-300-LUX+HG | 3 | -95 | 450 | 0.01°C | Yes | Yes | Yes | High | No | Yes | No |
| FGA-242A | FTX-100-LUX+HGLA | 1 | -95 | 450 | 0.01°C | Yes | Yes | Yes | High | Yes | No | No |
| FGA-0243A | FTX-200-LUX+HGLA | 2 | -95 | 450 | 0.01°C | Yes | Yes | Yes | High | Yes | No | No |


The HTX-100-MRI optical thermometer is ideally suited for research applications in life sciences and MRI applications. The HTX-100-MRI has a simple backlit LCD screen that displays temperature and optical probe health. It connects via a USB Cable to log temperature data to the USB Port on a computer.
Caution:The HTX-100-MRI device contains sensitive electronic circuitry and metallic components and should not be used in close proximity to high field strength MRI equipment. Only Osensa’s MRI style fiber optic temperature sensors and extension cables with non magnetic connectors are permitted in the high magnetic field environment.

The Fiber Optic Extension Cables are more durable than probes and thicker. They are easier to wind, more durable and harder to break. Extension Cables for MRI are usually used from the foot of the scanner table to the control room.
EXT is for Extension Cable, 400 is for Cable Style , others are available. Cable Lengths are specified in meters 10M is for 10 meters, 12M would be for meters, Cables are cut to length. Most Extension Cables for MRI Scanners are 10-14 meters long depending on the scanner and control room location.
STM is non Magnetic ST Connector especially for MRI. HFBR is totally non magnetic for use in Head Coils or Ultra Low Field MRI. ST is a metal connector for use outside of the Magnetic field environment.

Replace STM with connector types
( ST,STM or HFBR)
( STM is most popular for MRI)
Specify Length in Meters
Specify Connector on Each Side ( replace 2 with number of meters you need

FGA-0013A


FGA-0012A

FGA-0227A











FGA-0023A

FGA-0034A


FGA-0052A

FGA-0126A


FGA-0052B

FGA-0126A

FGA-0126A
Fiber Optic Adapters
USB Bases
TBUS and TBUS Adapter

This product supplies power and computer signals to temperature transmitters. Usually one per system.The long version holds 10 and short version holds 5.

ACC-USB-BASE

ACC-USB-BASE-SHORT

ACC-CON-TBUS-WIRE
The probes normally come with offset data are calibrated. Some companies require certificates for QA systems. Certification is extra.
For QA reasons and Regulatory Submissions, ISO 17025 Calibrations may be required
| CAL-FTX-Factory with Cerficate |
| CAL-FTX-ISO 17025 with Certificate, External ISO 17025 lab |
| CAL-PROBE-Factory – Singe Point with Factory |
| CAL-Probe–ISO-17025 Single Point with Cerficiate , ISO 17025 External Lab |
| CAL-ADD Point Factory |
| CALL-ADD Point-ISO 17025, ISO 17025 External Lab |


Fiber Optic Probes in the holes of the Fluke Drywell for Probe Calibration. Please note that the Factory has better lab-grade equipment. Calibration offsets can be determined from setups like this. One picture shows the Osensaview Graphing Setup, and the other picture shows analytical data screens.