Development and manufacture of thermal conductivity measuring instruments (HLC) for insulation material production
Hesto Elektronik GmbH
Langen near Frankfurt (DE)New on Amplifa
About HESTO
Hesto Elektronik GmbH, based in Langen near Frankfurt, has been developing and manufacturing industrial measurement technology since 1970. Its core business is HLC thermal conductivity measuring instruments as heat flow meter devices in accordance with ISO 8301, EN 12667, EN 1946-3 and EN 12664 for determining the thermal conductivity of insulation materials. The portfolio includes floor-standing and benchtop devices for specimens from 200×200 mm to 500×500 mm as well as automatic specimen feeding systems (RSH2/RSH3/RSH5) for 24-hour continuous operation. The instruments are used in in-house quality control of insulation material production by manufacturers in Europe and beyond, as well as in building-authority-approved testing institutes such as FIW Munich, EMPA and LNE. Electronic modules are sourced from specialists; the functions are programmed and the devices, including the mechanics, are manufactured entirely in-house. In addition to device sales, HESTO offers thermal conductivity measurements as a service, along with consulting, support, maintenance and free software updates under a maintenance contract.
- Site
- Langen near Frankfurt
- Processes
- Thermal conductivity measurement (heat flow meter device, ISO 8301/EN 12667/EN, Thermal conductivity measurement as a service, Consulting, support and maintenance from the manufacturer, Software updates, Financing options, Automatic specimen feeding systems (RSH2/RSH3/RSH5)
- Materials
- Heat Flow Meter method, Automatic specimen feeding systems RSH2/RSH3/RSH5
- Certificates
- Calibration with reference material from the accredited external monitoring, Long-term stable test specimen for verification, 3-year factory warranty
- Founded
- 1970
- Industries
- Insulation material production, Materials testing, Testing institutes (MPA, FIW)
- 01
Development and design of the measuring instruments
- 02
Procurement of the electronic modules
- 03
Programming of the functions including proprietary software
- 04
Mechanical manufacturing and device assembly
- 05
Calibration with reference material (FIW, EMPA, LNE)
- 06
Direct sales, support, maintenance and software updates
- 07
Thermal conductivity measurement as a service
Methods & Standards
Heat Flow Meter method
Measurement in accordance with ISO 8301, EN 12667, EN 1946-3 and EN 12664 with ± 3 % accuracy; two sensors in a symmetric arrangement deliver voltage signals proportional to the heat flow.
Automatic specimen feeding systems RSH2/RSH3/RSH5
Feeding automation for one or two HLC measuring instruments for decoupled continuous monitoring.
Locations
Langen
DEDevelopment, manufacturing and sales
- Lot size
- Single units and small series, no large series
- Materials
- Industrial measurement technology
- HLC X520
- HLC X310
- HLC X206
- HLC T520
- HLC T310
- HLC T206
- HLC A310
- HLC A206
- RSH2/RSH3/RSH5
Devices & Systems
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Thermal conductivity measurement (heat flow meter device, ISO 8301/EN 12667/ENTesting | Measurement accuracy ± 3 % | 500 mm × 500 mm × 200 mm (specimen thickness) | – | – | Insulation materials |
| Thermal conductivity measurement as a serviceTesting | – | – | – | – | Insulation materials |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC X520 | – | 500*500mm insulation boards between 20...200mm thickness, test temperature 10°C to 50°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC X310 | – | 300*300mm insulation boards between 15...100mm thickness, test temperature 10°C to 50°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC X206 | – | 200*200mm insulation boards between 15…60mm thickness, test temperature 10°C to 50°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC T520 | – | 500*500mm insulation boards between 20...200mm thickness, test temperature 10°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC T310 | – | 300*300mm insulation boards between 15...100mm thickness, test temperature 10°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (floor-standing unit) | HESTO HLC T206 | – | 200*200mm insulation boards between 15...60mm thickness, test temperature 10°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (benchtop unit) | HESTO HLC A310 | – | 300*300mm insulation boards between 15...100mm thickness, test temperature 23°C | – | Langen near Frankfurt |
| Thermal conductivity measuring instrument (benchtop unit) | HESTO HLC A206 | – | 200*200mm insulation boards between 15...60mm thickness, test temperature 23°C | – | Langen near Frankfurt |
| Automatic specimen feeding system | HESTO RSH2/RSH3/RSH5 | – | for one or two HLC measuring instruments | – | Langen near Frankfurt |
Additional services
Reference customers
Quality & Reproducibility
Calibration is performed using reference material from the accredited external monitoring bodies (FIW, EMPA, LNE, materials testing institutes). In practice, the reproducibility tolerance is well below ± 1 %; correct functioning can be verified at any time by re-measuring a supplied, long-term stable test specimen.
| Evidence | Langen |
|---|---|
| Calibration with reference material from the accredited external monitoring | |
| Long-term stable test specimen for verification | |
| 3-year factory warranty |
History
- 1970
Start of industrial measurement technology in Langen near Frankfurt with the development and manufacture of in-house amplifiers, analog and microprocessor modules including mechanics.
- ca. 1995
For about 30 years, HLC analyzers have become the standard in in-house quality control of insulation material production at manufacturers in Europe and beyond.