ecom-DP Digital Pressure Measurement Instruction Manual

If you are using a loading unit, please adjust the function “Bat. Loading”
Open the battery compartment and insert the batteries. Be careful to ensure proper polarity. If using the re-chargeable battery type, it will be necessary to fully charge the batteries prior to initial use (approx. 4 hours). The voltage of the batteries is monitored by the DP and will indicate a low battery condition by approx. 3.3 V by beeping and flashing a signal on the LCD display. If the voltage sinks (approx. 3 V) so the ecom-DP will automatically switch off.

Accumulator Charging

The accumulator charging procedure is monitored by the ecom-DP. Once connected to AC power, the instrument switches on. During the charging procedure, a BATTERY indicator will be shown on the LCD display. Once the battery is fully charged, the BATTERY indica-tor on the display will blink. It is possible to operate the ecom-DP on AC power during the charging procedure by pressing the <ON> button.

Setting Clock

The internal clock and the internal RAM memory of the ecom-DP are buffered via a capacitor. If the instrument is without current supply during more than approx. 10 minutes, the recorded information gets lost. Before using the ecom-DP for the first time, adjust the internal clock and delete the internal RAM memory.

Press <ON> to switch on the ecom-DP. The instrument displays the following:

Clock set
Delete RAM

Press OK to continue!

Press twice the <OK> key and the measurement value menu will be displayed.
Press <F2> (wrench symbol) to call up the menu “In-strument settings”.

With the cursor keys <UP/DOWN> scroll until the menu point “Set clock”.
Press <OK> to activate.

Date and time can be set as follows:

Select with the cursor keys <RIGHT/LEFT> the position to be changed (corresponding field blinks).
Adjust the correct numbers with the cursor keys <UP/DOWN>.

Press <OK> to confirm correct date and time settings.

Numerical Indication

If “Pressure Auto -> O by start” is set on “YES”, so the internal pressure sensors should be flown with pressure first after the switch-on of the instrument, as they are zeroed during said switch-on procedure.

After switch-on, the specifications of the pressure sensor will be displayed: denomination, measurement range and connection seizure (+/-). Press <OK> to access to the measurement value menu.

Before making measurements, the instrument must have adapted the ambient temperature!

Make sure, that the ambient temperature remains constant during measurement!

Zeroing the Internal Pressure Sensor

If the instrument is attached to a metal surface with the magnetic holders, the zero point may shift.
Please reset the zero point before measurement.

As the difference pressure sensor can drift because of its sensitivity in the zero point (also by attaching to met-al surfaces by magnetic holder), it is possible to reset the zero point.

Press <F2> (DP->0) to activate the function for zero point correction of the pressure sensors.
Press <F3> (DP1) to zero the value of the pressure sensor 1.
Press <F4> (DP2) to zero the value of the pressure sensor 2.
Press <F2> (ESC) to quit the menu.

Different functions can be called up with the function key <F1>. The current seizure of the other function keys (<F2> – <F4>) is shown on the display. Press one time <F1> to display the functions “Hold”, “Min/Max” and “Print”.

Freezing of Measurement Value

Press <F2> (Hold) to “freeze” that measurement value displayed at the time the key is pressed (active function = Hold indication blinks).
Press again <F2> (Hold) to quit the “freezing” and the current value will be displayed.

Minimal / Maximal Measurement Values

With <F3> (Min/Max) the determined minimal and maximal values since unit switch-on (or deleting via “CLR”) can be called up.

Press one time <F3> (Min/Max) to view the lowest determined values (Min/Max blinks).
Press <F2> (CLR) to delete the minimal values (new scanning begins).
Press again <F3> (Min) to view the highest values (Min/Max blinks).
Press <F2> (CLR) to delete the highest values (new scanning begins).

Press one more time <F3> (Max) to quit the menu.

Measurement Values Printout

Press <F4> (Print) to transmit the current measurement values via the infrared interface to the IR printer (option).
Condition hereto is a trouble free connection (direct sight) between the sending diode at the front of the instrument and the receiving diode of the printer. The distance between both instruments should not exceed 40 cm (1.3 foot), otherwise a trouble free transmission is not warranted at any time.

Contrast Adjustment and Lighting

Basing on the previous function seizure, the functions “LUMI” and “Light” are displayed after pressing <F1>. The graphic display of the ecom-DP can be adjusted to different visual conditions. The contrast can be adjusted in 5 steps (each key pressing = one step) while pressing <F3> (LUMI). Additionally the backlighting of the display can be activated while pressing <F4> (Light).

Check Programs

Use only air or inert gas for check !
Respect the “Technical Rules for Gas installations!”

Call up the pre-programmed measurement routines “Preliminary Check”, “Main Check” and “Usability Check” in the menu <F3> (PROC).
Parameters to each measurement routine can be adjusted in the menu “Setup”.

Setup

Scroll with <UP/DOWN> until the menu “Setup”. Press <OK> to activate the menu. The following parameters can be adjusted for the corresponding measurement routine:

Pressure Check

Stabilization time (1 – 10 min, default: 1 min)
Measurement time (10 – 120 min, default: 5 min)

Preliminary Check

Stabilization time (1 – 10 min, default: 1 min)
Measurement time (10 – 120 min, default: 10 min)
Test pressure (900 – 1200 hPa, default: 1000 hPa)

Main Check

Stabilization time (1 – 10 min, default: 1 min)
Measurement time (10 – 120 min, default: 10 min)
Test pressure (90 – 160 hPa, default: 110 hPa)

Usability Check

Stabilization time (1 – 270 min, default: 1 min)
Measurement time (10 – 240 min, default: 10 min)
Test pressure (20 – 160 hPa, default: 50 hPa)

Max. operation pressure (10 – 100 hPa, default: 20 hPa)
Air pressure (800 – 1200 hPa, default: 1013 hPa)

Each parameter can be adjusted the same way:

Select the parameter with <UP/DOWN>.
Press <OK> to activate.

Use the cursor keys <RIGHT/LEFT> to select the position to be changed (corresponding field blinks).
Adjust the correct figure using <UP/DOWN>.
Press <OK> to confirm the corrected value.

Pressure Check

Proceed as follows:

Close the conduit with a suitable adapter (part of ecom-DPK).
Connect the components a described in ecom-DPK manual.

Scroll with <UP/DOWN> until the menu “Pressure check”. Activate with <OK>-Taste.
With the compressed-air pump create the pre-adjusted test pressure (the unit beeps as soon as the pressure level is achieved).
Interrupt the connection to the air pump (switch-off the ball valve).

Wait for stabilization time (if the pressure remains in the range “test pressure +/- 10% during stabilization time, so the measurement time will start).
Once the measurement time is over, the result is displayed and can be sent to the IR printer (option) thus pressing <F2> (Print).
If the menu “Pressure Check” is selected again, so the result can be called up with <F1> (as long as the ecom-DP is on) or a new measurement can be started with <OK>.