SelectH2 – Herth+Buss

Leak location made simple – SelectH2

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.

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Diagnosing faulty vaporisers

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Environmentally friendly

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Low-cost procurement of forming gas

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Highly sensitive sensors

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No misdiagnosis due to oil and gas vapours

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Non-toxic

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Made in Germany

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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.

SelectH₂Varianten


	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

SelectH₂Varianten


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
Vergleichsübe rsicht


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

SelectH₂ accessories

You can find suitable accessories for locating leaks and filling the A/C system with forming gas in our online catalogue. Always use our accessories to ensure correct filling of the A/C system.

Adapter
Compressed air hoses
Expansion set
Cylinder pressure regulator
Connectors
Power supply

Online-Katalog

SelectH₂ leak location set

Our leak location set includes a pressure regulator with a pressure indicator and hoses that can be used to fill or top up your air conditioning system. The A/C system can also be filled with forming gas via the low-pressure connection. This means the forming gas can be distributed through the system more quickly and evenly.

Online-Katalog

Adapter for refrigerant R134a and R1234yf

Our Elparts range contains adapters for low and high-pressure sides on a vehicle. However, as different refrigerants circulate in vehicles, we supply adapters for both the R134a and the R1234yf refrigerant. The various adapter versions and their criteria can be found in our online catalogue.

Online-Katalog

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

Online-Katalog

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

All Events

Downloads for SelectH2

Videos for SelectH2

Company-Blog

18
Sep

5 things I can’t do without – SelectH2

Find your
dealer near you!

Jetzt suchen

Find your
dealer near you

Jetzt suchen

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Leak location made simple – SelectH2

Location of leaks with our SelectH2 – The benefits

SelectH2 – The best device for detecting leaks in A/C systems

SelectH2 Varianten

SelectH2 Varianten

SelectH2 accessories

SelectH2 leak location set

Adapter for refrigerant R134a and R1234yf

Sight glass for refrigerant analysis

Practical example of leak location

Evacuation

Filling A/C system with forming gas 95/5

Heating up the device

Location of leaks with our SelectH2

Location of leaks

Repair and inspection

Filling with refrigerant and testing for leak-tightness

Events for SelectH2

Downloads for SelectH2

Videos for SelectH2

Company-Blog

5 things I can’t do without – SelectH2

Find your dealer near you!

Find your dealer near you

Contact us!

Location of leaks with our SelectH₂ – The benefits

SelectH₂ – The best device for detecting leaks in A/C systems

SelectH₂Varianten

SelectH₂Varianten

SelectH₂ accessories

SelectH₂ leak location set

Location of leaks with our SelectH₂

Find your
dealer near you!

Find your
dealer near you