
Development and manufactory-style production of explosion-proof thermometers, temperature sensors, measuring systems and calibration solutions.

Temperaturmeßtechnik Geraberg GmbH
Heydaer Str. 39, 98693 MartinrodaNew on Amplifa
About tmg Geraberg
Temperaturmeßtechnik Geraberg GmbH (tmg) was founded in 1990 and develops and produces highly precise temperature measurement solutions at its Martinroda site in Thuringia. The portfolio includes explosion-proof thermometers, electrical temperature sensors, measuring systems, calibration solutions as well as display devices and controllers. Production is carried out as a manufactory with manual manufacturing and customized solutions according to customer requirements; the company has realized more than 40,000 products. The value chain covers development, cable assembly, population of printed circuit boards for temperature probes, as well as assembly and calibration. Customer industries include, among others, emissions measurement, energy technology, the solar industry, the glass and furnace industry, mechanical and plant engineering, pharmaceutical and analysis technology, and research. The company delivers worldwide, continuously trains apprentices and is certified to DIN EN ISO 9001.
- Site
- Martinroda
- Processes
- Development and production of explosion-proof thermometers, temperature sensors and, Calibration solutions (calibration of temperature sensors), Cable assembly, Population of printed circuit boards for temperature probes, Manufacture of electrical temperature probes; sales of display devices and controllers, Manufactory-style production of individualized temperature solutions (more than 40,000 products), Development of customized temperature measurement solutions, Production of explosion-proof thermometers and temperature sensors
- Materials
- Manufactory-style production, Calibration solutions, Cable assembly and PCB population, Explosion-proof thermometers
- Certificates
- DIN EN ISO 9001, ISO 9001
- Founded
- 1990
- Industries
- Emissions measurement, Energy technology, Solar industry, Glass and furnace industry, Mechanical and plant engineering, Pharmaceutical and analysis technology
- 01
Development of customized temperature measurement solutions
- 02
Cable assembly
- 03
Population of printed circuit boards
- 04
Manufactory-style production and assembly
- 05
Calibration
- 06
Sales (including display devices and controllers)
Manufacturing and Processes
Manufactory-style production
Manual, individualized manufacturing of temperature measurement solutions for maximum precision and durability.
Calibration solutions
Calibration of temperature sensors to ensure exact measurement accuracy.
Cable assembly and PCB population
In-house production of wiring and population of printed circuit boards for temperature probes.
Explosion-proof thermometers
Production of thermometers and sensors for applications with the highest safety requirements.
Site
Martinroda
DEHeadquarters / Manufacturing
- Lot size
- Individualized single units and small series (manufactory-style production)
- Materials
- Temperature probes, sensors, measuring systems
Components and Products






Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Development and production of explosion-proof thermometers, temperature sensors andMontage | – | – | – | – | – |
| Calibration solutions (calibration of temperature sensors)Prüfung | – | – | – | – | – |
| Cable assemblyMontage | – | – | – | – | – |
| Population of printed circuit boards for temperature probesMontage | – | – | – | – | – |
| Manufacture of electrical temperature probes; sales of display devices and controllersMontage | – | – | – | – | – |
| Manufactory-style production of individualized temperature solutions (more than 40,000 products)Montage | – | – | – | – | – |
Additional services
Quality
tmg is certified to DIN EN ISO 9001 (introduced in 2008) and ensures measurement accuracy through calibration solutions and manufactory-produced products. System and internal audits accompany quality assurance.
| Evidence | Martinroda |
|---|---|
| ISO 9001 |
History
- 1990
Foundation of Temperaturmeßtechnik Geraberg GmbH on 21 September 1990; registered on 06.12.1990 (AG Jena, HRB 300569)
- 2010
20th founding anniversary; managing director at the time: Klaus Irrgang
- 2013
Share capital fixed at €26,000
- 2014
Andreas Heinz and Barbara Irrgang become managing directors (09.07.2014)
- 2015
25th founding anniversary
- 2022
New articles of association (28.11.2022); several patent applications, including a process seal with integrated thermoelectric measuring means and a thermoelectric measuring and diagnostic device
- 2023
Patent application 'Temperature probe with test channel'
- 2024
Transfer of shareholder interests to Dr. Födisch Beteiligungen GmbH (Leipzig) in April 2024; Holger Födisch becomes managing director (05.06.2024)
- 2025
Patent 'Temperature probe' applied for (16.12.2025)
- 2026
Takeover of the business activities of Sonmet GmbH (February 2026); funding of €169,668 for the research project 'Dynamic Characteristic Values of Thermometers'