Fotemp Handheld Device For Fiber Optic Measurement – 2015 Redesign


Dresden, Germany  —  Robust and compact, these properties allow the FOTEMP1-Handheld thermometer to exist in environments, which require user mobility and fast results.

For this purpose the newly developed Design meets advanced modern technology as well as a handy and lightweight housing.

Equipped with a powerful and rechargeable battery, which keeps the system activated up to 30 hours, It is an ideal device for mobile work assignments without the hassle of power supplies and connecting cables.

A variable offer of interfaces (RS232, RS485, Ethernet, Micro-USB, Micro-SD) allows in combination with the provided software FOTEMP-Assistant, a reliable real-time data acquisition, which gives the possibility for an excellent monitoring of the measurement results.


The advanced measurement method using a gallium arsenide-crystal guarantees an accurate and instant temperature measurement.

Starting at a light wave length of 850 nm GaAs (gallium arsenide) becomes optical translucent.

Since the position of the band gap is temperature dependent, it shifts about 0.4nm/Kelvin. The fiber optic measuring device determines, by using a light source and a device for the spectral detection of the band gap, the change of the temperature.

The outer jacket of the fiber optic temperature sensors is made out of teflon, at the sensor tip a GaAs-crystal is attached. The probe sensor is completely non-conductive.


Temperature can be measured in high electromagnetic interfered environment, in microwave fields and other environments, where measurement with electric temperature sensors is not possible.

The redesign of the single-channel handheld signal conditioner provides with its new integrated touch display an unique and intuitive user interface. The ergonomic shape ensures a comfortable grip.

The FOTEMP1-H convinces by the latest technical and a modern design for a mobile, flexible and precise measurement adventure. See more online at

The official product launch is coming soon at Sensor+Test 2015, 19-21 May 2015.

Optocon AG develops fiber optic temperature sensors and fiber optic signal conditioners for temperature measurement since 1993.

Press contact:

Optocon AG
Washingtonstrasse 16/16a
01139 Dresden, Germany

Phone: +49 (0)351 843599-0
Fax: +49 (0)351 843599-111