Location of leaks with our SelectH2 – The benefits
Our SelectH2 family has been successfully established on the market. With this innovative
technology, we offer garages a method of leak detection in passenger car
and commercial vehicle A/C systems that saves time and money while protecting the environment. Once the A/C system has been filled with forming gas, vibration leaks that are difficult to detect can be identified with variable adjustment of the pressure. The location of leaks using forming gas, which is 95 percent nitrogen and 5 percent hydrogen, is particularly efficient as even the smallest leaks can be found in leaking A/C systems.
Diagnosing faulty vaporisers
Environmentally friendly
Low-cost procurement of forming gas
Highly sensitive sensors
No misdiagnosis due to oil and gas vapours
Non-toxic
Made in Germany
For air-conditioning systems with R134a and HFO-1234yf
SelectH2 – The best device for detecting leaks in A/C systems
The SelectH2 selective gas detector is equipped with two gas sensors, which act like an artificial nose and only respond to hydrogen. Gas and oil vapours do not have a negative impact on the measurement result, so there is no longer any obstacle to effective and precise leak detection on your car or air conditioning system. This is the key difference compared with conventional detection units, which respond to the refrigerant R134a.
SelectH2 Varianten
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| SelectH2 | SelectH2 | SelectH2Slim | SelectH2mini | |
| Gauge | With illuminated LCD display With battery status indicator With LED display |
With illuminated LCD display With battery status indicator With LED display |
With illuminated LCD display With battery status indicator With LED display |
With illuminated LCD display With battery status indicator |
| Length gooseneck | 320 mm | 500 mm | 500 mm | 320 mm |
| Housing type | Aluminium housing | Aluminium housing | Aluminium housing | Synthetic housing |
| Dual sensor GGS 1000/GGS 6000 |
Broadband, H2-selective |
Broadband, H2-selective |
Broadband, H2-selective |
Broadband, H2-selective |
| w x H x D | 52 x 178 x 35 mm | 52 x 178 x 35 mm | 52 x 178 x 28 mm | 44 x 175 x 36 mm |
| With acoustic alarm | ■ | ■ | ■ | ■ |
| With integrated work light | ■ | |||
| With suction pump | ■ | ■ | ■ | |
| Automatic zero-point calibration in fresh air |
■ | |||
| Automatic sensor check | ■ | ■ | ■ | ■ |
| With fault detection |
■ | ■ | ■ | ■ |
| Netzteil |
||||
| Ausgangsspannung | 12 V |
12 V | 12 V | 9 V |
| Steckerausführung | Rundstecker | Rundstecker | Rundstecker | Rundstecker |
| Durchmesser | 3,5 mm |
3,5 mm | 3,5 mm | 2,5 mm |
| Artikelnummer: | 95980002 | 95980024 |
95980025 |
95980019 |
SelectH2 Varianten
|
|
| SelectH2 | |
| Gauge | With illuminated LCD display With battery status indicator With LED display |
| Length gooseneck | 320 mm |
| Housing type | Aluminium housing |
| Dual sensor GGS 1000/GGS 6000 |
Broadband, H2-selektiv |
| W x H x D | 52 x 178 x 35 mm |
| With acoustic alarm | ■ |
| With integrated work light | |
| With suction pump | ■ |
| Automatic zero-point calibration in fresh air | |
| Automatic sensor check | ■ |
| With fault detection | ■ |
| Netzteil |
|
| Ausgangsspannung |
12 V |
| Steckerausführung |
Rundstecker |
| Durchmesser |
3,5 mm |
| Vergleichsübersicht | |
|
|
| SelectH2 | |
| Gauge | With illuminated LCD display With battery status indicator With LED display |
| Length gooseneck | 500 mm |
| Housing type | Aluminium housing |
| Dual sensor GGS 1000/GGS 6000 | Broadband, H2-selektiv |
| W x H x D | 52 x 178 x 35 mm |
| With acoustic alarm | ■ |
| With integrated work light | |
| With suction pump | ■ |
| Automatic zero-point calibration in fresh air | |
| Automatic sensor check | ■ |
| With fault detection | ■ |
| Netzteil | |
| Ausgangsspannung | 12 V |
| Steckerausführung | Rundstecker |
| Durchmesser | 3,5 mm |
| Vergleichsübersicht | |
|
|
| SelectH2Slim | |
| Gauge | With illuminated LCD display With battery status indicator With LED display |
| Length gooseneck | 500 mm |
| Housing type | Aluminium housing |
| Dual sensor GGS 1000/GGS 6000 |
Broadband, H2-selektiv |
| W x H x D | 52 x 178 x 28 mm |
| With acoustic alarm | ■ |
| With integrated work light | |
| With suction pump | ■ |
| Automatic zero-point calibration in fresh air | ■ |
| Automatic sensor check | ■ |
| With fault detection | ■ |
| Netzteil | |
| Ausgangsspannung | 12 V |
| Steckerausführung | Rundstecker |
| Durchmesser | 3,5 mm |
| Vergleichsübersicht |
|
|
|
| SelectH2mini | |
| Gauge | With illuminated LCD display With battery status indicator |
| Length gooseneck | 320 mm |
| Housing type | Synthetic housing |
| Dual sensor GGS 1000/GGS 6000 |
Broadband, H2-selektiv |
| W x H x D | 44 x 175 x 36 mm |
| With acoustic alarm | ■ |
| With integrated work light | ■ |
| With suction pump | |
| Automatic zero-point calibration in fresh air | |
| Automatic sensor check | ■ |
| With fault detection | ■ |
| Netzteil | |
| Ausgangsspannung | 9 V |
| Steckerausführung | Rundstecker |
| Durchmesser | 2,5 mm |
| Vergleichsübersicht | |
Sight glass for refrigerant analysis
Our sight glass enables visual inspection of refrigerant or compressor oil and provides valuable information on their condition. Chips for example or other foreign bodies may have got into the system. You can also check whether compressor oil has become discoloured or contains water. Important information: The connections for R134a or R1234yf must be ordered separately.
- With integrated filter
- Easily disassembled for cleaning
Practical example of leak location
Evacuation
Evacuate the air-conditioning system using a suitable A/C service unit.
Filling A/C system with forming gas 95/5
Now fill the high-pressure side of the air-conditioning system with forming gas. The high and low-pressure side can be topped up simultaneously using the leak-location expansion set.
Heating up the device
The heat-up phase of the SelectH2 is signalled by the word "HEAT" and lasts approx. 50 seconds.
Location of leaks with our SelectH2
Guide the gas detector over the hose connections and components at a steady speed. You can read the respective hydrogen concentrations off the display. Rising ppm values indicate a leak.
Location of leaks
Leaks are also indicated by acoustic and visual signals.
Repair and inspection
After repairing a leak, it is recommended carrying out another inspection using forming gas, followed by a functional check.
Filling with refrigerant and testing for leak-tightness
Fill the air-conditioning system with the appropriate refrigerant. Once you have filled up the A/C system, you should perform a functional test without fail.
Events for SelectH2
Downloads for SelectH2
Videos for SelectH2
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Herth+Buss Fahrzeugteile GmbH & Co. KG
Dieselstraße 2-4
63150 Heusenstamm
Germany