15 K415 Issue No. 1
Pressure Switch Testing with Contact Resistance Measurement
A - External pressure source (indicator instruments only)B - Pressure regulator
C - Pressure switch under test
To perform switch test with contact resistance measurement, select P-SWITCH and
proceed as follows:
To ensure accurate measurements it is recommended that the zero procedure (that
compensates for the resistance of the test leads) is carried out before performing this
test.
Note: Allow sufficient time after contact closure for the resistance to stabilize.
The switch test is performed in the same way as the previous
section, except that the contact resistance is measured and
displayed with the results.
bar
F2F1
DEMARRER
ETAT CONTACT
A
B
FCT. : P-PRESSOS 24V OFF
MODE ENREG. RAPIDE
DPI 615
C
INPUT
SELECTIONNER
ZERO
RESIST
OFF
ZERO
RESIST
ON
ZERO
SELECTIONNER
FONCTION
SELECTIONNER
FONCTION
SELECTIONNER
RESISTANCE
Connect Vin +, SW + and
mA in + together.
Connect Vin +, SW + and
mA in
+ together.
Connect switch test leads
across switch symbol.
Connect switch test leads
across switch
symbol.
Open circuit test leads
Press ENTER to continue.
Switch Resistance input
now ready for use.
Switch Resistance input
now
ready for use.
Press ENTER to continue.
Open circuit test leads.
Now short test leads.
Press ENTER to continue.
bar
RUN
CONTACT STATE
TASK : P-SWITCH
SNAPSHOT MODE
24V OFF
24V OFF
DEMARRER
bar
ETAT CONTACT
FERME A
OUVERT A
15.060
bar
14.059
bar
HYSTERESIS 1.001
FCT.: P-PRESSOS
MODE ENREG. RAPIDE
Taking Measurements
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