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HeliTest and PHD-4 model comparison


New features Back to the top...

New features Description HeliTest PHD-4
Analogue output Via the RS-232 port
Auto-tuning of sampling flow Offsets condition of sampling line
Enhanced firmware Added features, easier to use
Integrated back-flow valve Prevents sensor saturation
Internal filter For sampling line protection
Redesigned exterior More comfortable to use
Redesigned sampling pump A more robust design
Redesigned sensor For more stable readings
Replaceable sampling pump Can be changed in the field

Unit performance Back to the top...

Unit performance HeliTest PHD-4
Battery life (hours) Four Four
CE approved
CSA/US approved
Lowest detectable
helium concentration		 2 Parts Per Million (PPM) 2 Parts Per Million (PPM)
Maximum signal drift 10 PPM every 10 minutes 10 PPM every 10 minutes
Operating temperature 5ºC to 40ºC 5ºC to 35ºC
Response time Two seconds Two seconds
Start-up time (with self-check) Three minutes (approximately) Three minutes (approximately)
Weight 4.5 Kg (9.5 lb) 2.6 Kg (5.7 lb)

Contact us Back to the top...

Should you have any questions, or if you would like to discuss any of this further, then please do not hesitate to get in touch.

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Our thanks to Alastair Hazell Back to the top...