Cosmo LS-R700 User Manual

76 7 Operations Listed By Purposes
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What To Do
Obtain K(Ve) value through K(Ve) Automatic Setup or manually calculate and enter K(Ve) value.
LS-R700 computes leakage based on the measurement of the pressure difference between the non-leaking
master and the tested part. K(Ve) is "leak coefficient" which is used for converting measured differential
pressure into a flow rate.
1.1 K(Ve) Automatic Setup
A tool called Leak Master is used for K(Ve) Automatic Setup.
1)
Connect a Reference Master to MASTER port. Master should be a
Master Chamber or known non-leaking part.
2)
Connect a known non-leaking part to the WORK port.
3)
Check the test pressure by using CHG Hold.
> Main Menu > Measure Screen > Mode > Meas Mode
> Charge Hold
4)
> Press ► to start and check the test pressure.
5)
> Main Menu > K(Ve) > K(Ve) Automatic Setup > Basic settings
> K(Ve) Setup Behavior > Select from 3-phase, 1-phase or Mastering.
3-phase:
LS
-R700 will cycle through a leak test three times.
Phase 1 is a warm
-up, in phase 2 Compensation value is
measured
, and in Phase 3, the leak calibrator introduces preset
volume change/leak into the system creating a differential
pressure
which allows for the automatic setup of K(Ve). The
compensation value measured in phase 2 is used in phase 3.
1-phase:
LS
-R700 will cycle through one sequence and calculate the
system volume K(Ve).
If Drift Comp Feature is enable
d and a compensation value is
stored in the Memory, the measured value is compensated by the
value
Mastering:
K(Ve) Setup is preceded by
Mastering Sampling. The current
settings are used for the Mastering Sampling. The sampled
Mastering value is subtracte
d from the Measured value, which
becomes K(Ve)
.
Make sure that test data gets stabilized by Mastering.
Mastering for the K(Ve) Setup Behavior can be selected only when the
calibrator used for K(Ve) Automatic Setup is LC or QLC. Mastering is
effective for reducing the BAL2 timer and DET timer.
NOTE
Settings unlock is required to change settings and toggling
to Manual (M) mode to execute a measurement manually.
Attention

Cosmo LS-R700 Specifications

General

Brand	Cosmo
Model	LS-R700
Category	Test Equipment
Language	English