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Instruction Manual MM850481 ed.01
Use the [S] and [T] keys to move the cursor symbol to the value to be changed. Press the [ENTER] key to store the
new selection.
Select “TEST RESULT” option for results viewing and press the [ENTER] key.
Now you can connect the instrument Pressure inlet (INP) connector to the gas circuit.
CAUTION
BE SURE
FOR EMPTY AND CLEAN CIRCUIT
:
OVERPRESSURE
,
DUST
,
LIQUID AND CONDENSING MAY DAMAGE THE
INSTRUMENT INTERNAL CIRCUITS
.
With circuit depressurized, press the [TEST] key. The unit will display the following page:
SELECT TEST
0.2 mmH2O
Result: A
START TEST
ESCAPE
–
ZERO
Press the [ZERO] key to reset the reading.
The 4000 series can memory store up to 2 different test data (A and B) for “Before” and “After” check.
Use the [S] and [T] keys to move the cursor symbol to “Result” option. Press the [ENTER] key to select the option.
Use the [S] and [T] keys to move the cursor symbol to the value to be changed. Press the [ENTER] key to store the
new selection.
Select “START TEST” option and press the [ENTER] key to run the decay leak test.
P1
:
100
.
0
mm
H2O
P2 : 99.5 mmH2O
P3 : _____
P4 : _____
~P : _____
Result A: _____ 300
ESCAPE
–
The unit will store 4 different measurements at programmed time (standard values are: 10, 60, 120 and 120 second).
See paragraph 10.2.4 to change these values.
The instrument will display the ∆P (P1-P4) value and it compute, using the circuit specifications (Length, Diameter and
Type) the test result (GOOD or FAIL).
Test result will be calculated using the following acceptance limits table:
Under track circuit Visible circuit
Diameter
[in]
½” ¾” 1” 1” ¼ 1” ½ ½” ¾” 1” 1” ¼ 1” ½
Length
< 10m
3.5 3 2.75 2 1.75 35 30 27.5 20 17.5
< 20m
2.85 2.35 2.2 1.4 1.1 28.5 23.5 22 14 11
< 30m
2.7 2.2 1.5 1.1 0.85 27 22 15 11 8.5
< 40m
2.35 1.7 1.2 0.9 0.4 23.5 17 12 9 4
< 50m
2.1 1.4 1.1 0.3 0.3 21 14 11 3 3
> 50m
1.85 1.4 0.9 0.3 0.3 18.5 14 9 3 3
Note: These values are expressed in mmH
2
O. The plant circuit is failed when (P1-P4) exceed the values after 5
minutes.
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