Ecom EN3 Operating Instructions Manual page 47

6. The pipe volume (V) is needed for the calculation of the leak rate. The ecom-
EN3 offers two possibilities:
a. Type in pipe volume (V):
- Choose NO at the inquiry „Calculate Volume automatically ?"
- Type in pipe volume (V) with the instrument keyboard and confirm with <Enter>.
b. Calculate pipe volume automatically (V):
- Choose YES at the inquiry „Calculate Volume automatically ?".
- Connect the squirt or soot pump as described before.
- Open ball valve and wait until the pressure is stabilized.
- Choose syringe or soot pump with the cursor keys <right/left>.
- Start volume calculation with <Enter>.
- Sample the test volume with squirt or soot pump. The decrease of pressure
must be min. 2 hPa (otherwise operate squirt or soot pump several times).
- Close ball valve and confirm with <Enter>.
- Choose number of strokes with the cursor keys < right/left > and confirm with
<Enter>.
7. Create the pre-adjusted test pressure with the air pump (the unit beeps as soon as
the pressure level is achieved).
8. Interrupt the connection to the air pump (switch-off the ball valve).
9. Wait for stabilization time (if the pressure remains in the range „test pressure +/-
10% during stabilization time, so the measurement will start).
10. Once the measurement time is over, the result is displayed and can be printed by
pressing <Print>.
11. If the menu „Usage property" is selected again, so the result can be called up
with <F4> (as long as the ecom-EN3 is on) or a new measurement can be started
with <F1>.
The following adjustments can be made in the menu Pressure Tests / Setup for the procedure
"Usage Property":
Parameter
Stabilization time
Measurement time
Test pressure
Max. operation pressure
ecom-EN3
Meaning Adjustment
1 ... 270 min
10 ... 240 min
20 ... 160 hPa
10 ... 100 hPa
Factory setting
1 min
10 min
50 hPa
23 hPa
Page 47