Detecting Specific Gases 5-1
kina22e chapter 5.fm technical handbook(1206)
6 Detecting Specific Gases
6.1 R134a / Cyclopentane
When detecting R134a in presence of cyclopentane (foaming agent) R134a should
be detected on the alternative mass position 83 to avoid false alarms due to cross
sensitivity with the cyclopentane.
Please refer to section 4.4.6 for how to select an alternative mass position.
6.2 R134a / R245fa
When detecting R134a in presence of R245fa (foaming agent) R134a should be
detected on the alternative mass position 83 to avoid false alarms due to cross
sensitivity with the R245fa.
Please refer to section 4.4.6 for how to select an alternative mass position.
6.3 R600a / Cyclopentane / Isopentane
When detecting R600a in the presence of cyclopentane and / or isopentane (foaming
agent), R600a should be set to "IGS" as the mass position.
Please refer to Section 4.4.7 for how to activate the IGS mode.
6.4 Helium
When detecting helium the response time of the Ecotec E3000 will be longer than for
refrigerants. Please allow for the following minimum measuring times when detecting
helium:
The smallest detectable leak rate for helium will be 1 * 10
-6
mbarl/s (higher than for
refrigerants).
When detecting helium, a PRO-Check reference leak (cat. no. 521-001) may be
connected to the Ecotec E3000 remotely and used for internal calibration of helium.
When working with helium (diluted), the leak rate may also be displayed as gas
equivalent leak rate. See Section 4.4.3 for details.
Sniffer line Min. measuring time
3 m 2.2 s
5 m 2.5 s
10 m 3.3 s
15 m 4.5 s
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