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Anritsu FL Series Fiber Optic Thermometers – FL-2000 & FL-2400
The Anritsu FL Series fiber optic thermometers measure temperature in microwave, high-frequency and high-voltage environments where conventional electrical sensors can be difficult to use.
- Model options: FL-2000 with one channel or FL-2400 with four channels.
- Probe selection: Dedicated fiber optic probes for different temperatures, materials and operating conditions.
- Integration: Analog temperature output and RS-232C communication.
- Configuration: Temperature probes are selected separately and are not included with the instrument.
Electrical interference can make temperature measurement difficult around microwave equipment, high-frequency processes and high-voltage components. The Anritsu FL Series provides a fiber optic sensing option for these environments, with dedicated probes selected to suit the measurement point.
Start with the number of channels required, then match the probe to the temperature range, material and installation conditions. The instrument's measurement range and the probe's operating range are different: the selected probe determines the usable range of the complete measurement system.
Choose one or four measurement channels
| Feature | FL-2000 | FL-2400 |
|---|---|---|
| Instrument |  |
 |
| Measurement channels | 1 | 4 |
| Internal memory | Up to 15,000 readings at one-second intervals | No internal memory |
| Dimensions, excluding protrusions | 210 × 88 × 230 mm (W × H × D) | 320 × 99 × 280 mm (W × H × D) |
| Approximate weight | 3 kg | 5 kg |
Temperature probes are not included. Specify the required probes and supply-voltage version when ordering.
Measurement specifications
| Instrument measurement range | -195.0 to 450.0°C; actual usable range depends on the probe |
|---|---|
| Resolution | 0.1°C |
| Accuracy before calibration | ±2°C from -195.0 to 399.9°C; ±5°C from 400.0 to 450.0°C |
| Accuracy after calibration | ±0.5°C within ±50°C of the calibration point |
| Calibration method | One-point calibration using a known temperature within the measurement area |
| Display update | Every second |
| Analog output | 10 mV/°C |
| Communication | RS-232C |
| Operating conditions | 0 to 40°C; 15 to 80% RH, non-condensing |
Select the appropriate fiber optic probe
Consider chemical exposure, light intensity and mechanical handling as well as temperature. Confirm suitability for the actual material and operating conditions before choosing a probe.
| Probe | Temperature range | Selection guide |
|---|---|---|
| FS100 | -190 to 260°C | General-purpose measurements |
| FS150 | -190 to 260°C | More durable general-purpose construction |
| FS100H | -190 to 260°C | Liquid and chemical-resistant construction |
| FS150H | -190 to 260°C | More durable liquid and chemical-resistant construction |
| FS200 | -30 to 200°C | Chemical-resistant type |
| FS300 | -190 to 260°C | Light-resistant type for intense-light environments |
| FS400 | -20 to 400°C | High-temperature type; excludes liquid measurements |
| FS500 | -60 to 260°C | Needle type for semisolid materials |
| FS600 | 0 to 80°C | Plastic probe type |
FS100 — General-purpose probe
FS150 — Durable general-purpose probe
FS100H — Liquid and chemical-resistant probe
FS150H — Durable liquid and chemical-resistant probe
FS200 — Chemical-resistant probe
FS300 — Light-resistant probe
FS400 — High-temperature probe
FS500 — Needle probe
FS600 — Plastic probe
Extension cables and installation accessories
Specify the cable route and required installation length alongside the probe. Confirm fitting and seal compatibility where the probe enters a vessel or enclosed process.
FK1 — General-purpose extension cable
FK2 — Heavy-duty extension cable
FA1 — Probe-to-extension adapter
FN1-T and FN1-V — Compression fittings
Fitting options include TFE and Viton seal materials. Select the version to suit the installation and process conditions.
Product video
Specify your measurement requirements
For a suitable configuration, provide the number of measurement points, expected temperature range, measured material, cable length and any exposure to chemicals or intense light. Include your required analog output or PC connection, supply voltage and quantity.
Contact us for pricing and availability. Include an existing instrument or probe model number if you need a replacement or an additional measurement channel.
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