Optocon FOTEMP, fiber-optic temperature measurement systems (1–40 channels)
FOTEMP are fiber-optic temperature measurement systems with 1–40 channels for gallium arsenide crystal sensors, made by the company in Dresden, Germany. In power engineering they are used for direct measurement of the hot spot temperature of power transformer windings.
- Models
- MN30, HD20, MS10, C15, C20, T20, T30
- Channels
- 1 (MN30); 1–2 (HD20); 1–40 (MS10); 1/2/4 (C15, C20); 2–16 (T20, T30)
- Range
- −200…+300 °C
- Accuracy
- ±0.2 K (T20, T30 ±1.0 K); resolution 0.1 K
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Optical GaAs sensors are not affected by microwave radiation, strong magnetic fields and high voltage, that is, by the conditions in which resistance thermometers and thermocouples are unsuitable. FOTEMP converts the signal of such a sensor into a temperature value, shows it on a display, relays and analog outputs, and passes it to control systems. The measuring range is from −200 to +300 °C for all models, the resolution is 0.1 K, the accuracy is ±0.2 K, and ±1.0 K for the T20 and T30, with a channel polling time of 250 ms.
The model range is built by the number of channels. The MN30 is a single-channel embedded module powered from USB, measuring 70 × 30 × 29 mm and weighing 0.2 kg. The HD20 has 1–2 channels and a 3.5″ display. The MS10 is a modular system for a 19″ rack with 1–40 channels and 7TE or 14TE modules. The C15 and C20 are compact DIN rail instruments with 1, 2 or 4 channels. The T20 and T30 are multichannel transformer monitors with 2–16 channels and 4.3″ and 7″ displays, and the T30 holds four modules of 4 channels each and 16 freely programmable relays.
The analog outputs are 0–10 V or 4–20 mA, with relays one per channel or programmable. The interfaces are TTL, RS232, RS485, USB and Ethernet, and the protocols are Modbus and ASCII. The T30 additionally supports DNP3.0, IEC 61850 and IEC 60870-5-104 and integrates into the substation SCADA system. Data is written to a microSD card, with 32 GB in the T30. Depending on the model, the supply is from USB, 9–24 V DC, 12 V DC, 24 V DC or 100–240 V AC.
The instruments are calibrated over the range −200…+300 °C in the manufacturer's own laboratory, and a calibration certificate is issued. FOTEMP Assistant and FOTEMP Analyzer software is supplied in the set. Outside power transformers the systems work in switchgear and busbar ducts, high-voltage installations, nuclear power, aggressive and explosive environments, aerospace, process monitoring, laboratories and medicine.
Technical specifications
| Models | MN30, HD20, MS10, C15, C20, T20, T30 |
|---|---|
| Channels | 1 (MN30); 1–2 (HD20); 1–40 (MS10); 1/2/4 (C15, C20); 2–16 (T20, T30) |
| Range | −200…+300 °C |
| Accuracy | ±0.2 K (T20, T30 ±1.0 K); resolution 0.1 K |
| Channel polling | 250 ms |
| Outputs | 0–10 V or 4–20 mA; relays (up to 16 in the T30) |
| Interfaces | USB, RS232, RS485, Ethernet |
| Protocols | Modbus, ASCII; T30 DNP3.0, IEC 61850, IEC 60870-5-104 |
| Supply | USB; 9–24 V DC; 12/24 V DC; 100–240 V AC |
| Data logging | microSD; T30 32 GB |
Request a price and lead time
Optocon FOTEMP, fiber-optic temperature measurement systems (1–40 channels). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 9025 19 20 00 |
|---|---|
| HS, 6 digits | 9025 19 |
| CN (EU) | 9025 19 20 |
| HTSUS (USA) | 9025 19 80 10 |
| China customs tariff | 9025 19 90 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which FOTEMP model is suitable for transformer monitoring?
The T20 and T30 with 2–16 channels are intended for transformers. The T30 has 16 programmable relays and the DNP3.0, IEC 61850 and IEC 60870-5-104 protocols.
How many channels can be connected to one FOTEMP system?
The modular MS10 system in a 19″ rack expands from 1 to 40 channels. The compact C15 and C20 have 1, 2 or 4 channels.
What measurement accuracy is provided?
Accuracy is ±0.2 K at a resolution of 0.1 K, and ±1.0 K for the T20 and T30 monitors. Polling one channel takes 250 ms.
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