6 | Operation INFICON
48 / 104 Ecotec E3000-Operating-instructions-kina22en1-28-(2211)
6.4.4 Suppress interfering gases
IGS causes the findings of the interfering gases cyclopentane, isopentane as well as
any mixture thereof to be suppressed during the search for refrigerant R600a. Up to
an interfering gas concentration of 50g/a, the error is only 1% at most.
If IGS is activated, only one additional gas can be entered in the list of sample gases.
If more than two gases are activated for R600a when IGS is activated, the additional
gases (starting with the highest gas number from 1 to 4) will automatically be
deactivated so that there are only two gases left.
If R600a is measured with IGS and R134a is set as second gas, select mass position
83 for R134a because malfunctions between propellant and R134a will occur
otherwise.
IGS requires little maintenance. If repeated false alarms occur during the sniffing with
IGS, calibration must be set to interfering gases, see below.
Activate IGS 1. Select R600a as the gas to be searched for: “Measuring parameters > Gas … >
Gas > Change > R600a > OK.”
2. Switch to mass setting in the “Measuring parameters gas …” window.
3. Browse the available mass positions until “IGS” is displayed in the line for the
preferred mass.
4. Confirm with “OK.”
Fig.29: Selection of the IGS mode for R600a
IGS alignment The previous, actual calibration is carried out with and external test leak as it is with
other gases. For the additional IGS calibration, you need a cyclopentane test leak and
an isopentane test leak, available as “Calibration set for IGS mode.”
The Ecotec E3000 recognizes errors you make in the gas sequence during the
alignment and notifies you with a flashing gas display.
1. Activate IGS, see above.
2. Select “Cal” in the measurement window.
3. Select the gas R600a in the “Select gas” window. The entry should be expanded
with IGS.
4. Select “IGS alignment” in the “Start external calibration” window and follow the
instructions on the display.
To Next Page
Loading...
Need help?
General
