BRAGG series FBG-based Temperature Probes
Micronor Sensors now offers a range of off-the-shelf single and multipoint fiber optic temperature probes based on Fiber Bragg Grating technology. There are two classes of sensors:
- Standard SM800P-5.6 (P) fiber-based probes with temperature range of -250°C to +300°C
- Ultra High Temperature (UHT) fiber-based probes with range of -250°C to +600°C
- Ultra High Temperature (UHT) fiber-based probes with deeper written FBGs with measuring range of -250°C to +800°C, Maximum 10 FBG points per probe.
- Typical measurement accuracy is ±1-3°C for the range of -50°C to +300°. Referencing techniques and temperature model selection can be used for higher accuracy.
The last FBG is located within 10mm of the tip of the capillary. For turn-key BRAGG Temperature Probes, the Capillary options are:
- Silica, 0.44m OD, fused closed end
- Stainless Steel, 1mm OD, welded closed end
- Alumina Ceramic, 3.3m OD, closed end
IMPORTANT NOTE: If you require high precision (±0.2°K to ±1°K) in the range of -200°C to +300°C and/or traditional instrumentation, then go to our FOTEMP TS Series Temperature Probes and Signal Conditioners
These probes require the connection to either a 1-channel FBGX100 or 4-channel FBGX400 interrogator. General purpose, multi-channel FBG-Interrogator software is provided for free with the interrogators. Custom probes can incorporate up to 30 FBG measuring points (min spacing is 2mm) in a single fiber probe. These interrogators offer sampling rate of 1-100 Hz with data logging to an Excel compatible file. FBGX100 interfaces are microUSB and UART; FBGX400 features USB-C and UART.
Typical fiber optic temperature monitoring applications include:
- Industrial process monitoring
- Power transformers
- Medical and catheter instrumentation
- Food process monitoring
- Harsh environment conditions
Download BRAGG Temperature Probe™ Quick Guide:
These are STOCK Bragg Temperature Probes. If one of these do not fit you application, then contact Micronor Sensors with your configuration requirements (min/max temperature measurement range, # of FBGs, spacing of FBGs, and capillary type).
INTERROGATORS |
General Purpose Wideband (W) Series
(Up to 30 FBGs in one sensor) |
For use with all BRAGG Temperature Probes
Consult FBG Interrogator web page for full technical documentation, software and programmers guide. |
| STOCK Part Number | Description | Image |
| FBGX100 | Single channel interrogator, Wideband (W), Sampling Rate=1-200 Hz, Maximum 30 FBGs per sensor chain. |  |
| FBGX400 | 4-channel interrogator, Wideband (W), Sampling Rate=1-200 Hz, Maximum 30 FBGs per sensor chain per channel. (total of 120 points). |  |
FI |
Bare Fiber Capillary
(max 300°C) |
For Temperature or Strain Applications  |
| STOCK Part Number | Description | Configuration (Consult FBG Sensor Chain Data Sheet for additional information) |
| FBG-MR0150 | Single FBG for general purpose use and initial FBG familiarization before ordering application-specific custom sensor. | A=P-1-W-GL-FI (max 300°C) B=2000-200-100 |
| FBG-MR0125 | 2-FBG for general purpose use and initial multi-FBG familiarization before ordering application-specific custom sensor. | A=P-2-W-GL-FI (max 300°C) B=2000-30-10-10 |
| FBG-MR0055 | 4-FBG for general purpose use and initial multi-FBG familiarization before ordering application-specific custom sensor. FBGs are 10mm apart. | A=P-4-W-GL-FI (max 300°C) B=2000-35-10-10-10-10 |
| FBG-MR0010 | 10-FBG for general purpose use and initial multi-FBG familiarization before ordering application-specific custom sensor. FBGs are 10mm apart. | A=P-10-W-GL-FI (max 300°C) B=1000-100-100-100-100-100-100-100-100-100-100-100 |
SI |
Silica Capillary (max 350°C) |
For Temperature Applications Only  |
| STOCK Part Number | Description | Configuration (Consult FBG Sensor Chain Data Sheet for additional information) |
| FBG-MR0155 | Ultra High Temperature Bragg Probe with 1-FBG, measurement range of -250°C to +350°C, Capillary Length=100mm. This probe is non-metallic, ideal for Induction Heating applications. | A=UHT-1-W-PK2-SI (max 350°C) B=2000-90-10 |
| FBG-MR0126 | General Purpose Bragg Temperature Probe with 2-FBG, measurement range of -250°C to +300°C, Capillary Length=50mm. This probe is non-metallic, ideal for Induction Heating applications. | A=P-2-W-GL-SI (max 300°C) B=2000-30-10-10 |
| FBG-MR0055 | General Purpose Bragg Temperature Probe with 4-FBG, measurement range of -250°C to +300°C, Capillary Length=75mm. This probe is non-metallic, ideal for Induction Heating applications. | A=P-4-W-GL-FI (max 300°C) B=2000-35-10-10-10-10 |
SSC |
Stainless Steel Capillary
(max 600°C) |
For Temperature Applications Only  |
| STOCK Part Number | Description | Configuration (Consult FBG Sensor Chain Data Sheet for additional information) |
| FBG-MR0128 | Ultra High Temperature Bragg Probe with 1-FBG, measurement range of -250°C to +600°C, Capillary Length=100mm. | A=UHT-1-W-PK2-SSC (max 600°C) B=2000-90-10 |
| FBG-MR0166 | General Purpose Bragg Temperature Probe with 2-FBG, measurement range of -250°C to +350°C, Capillary Length=50mm. | A=P-2-W-SST-SSC (max 350°C) B=2000-30-10-10 |
| FBG-MR0055 | General Purpose Bragg Temperature Probe with 4-FBG, measurement range of -250°C to +350°C, Capillary Length=75mm. | A=P-4-W-SST-SSC (max 350°C) B=2000-35-10-10-10-10 |
AC |
Alumina Ceramic Capillary (max 800°C) |
For Temperature Applications Only  |
| STOCK Part Number | Description | Configuration (Consult FBG Sensor Chain Data Sheet for additional information) |
| FBG-MR0129 | Ultra High Temperature Bragg Probe with 1-FBG, measurement range of -250°C to +800°C, Capillary Length=100mm. Non-Metallic. | A=UHT-1-W-PK2-AC (max 800°C) B=2000-90-10 |
| FBG-MR0167 | General Purpose Bragg Temperature Probe with 2-FBG, measurement range of -250°C to +350°C, Capillary Length=100mm. | A=P-2-W-SST-AC (max 350°C) B=2000-80-10-10 |
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