Ecom DP User manual

English

2
Index
1. Design ecom-DP.................................................................................................3
2. Initialisation .........................................................................................................3
2.1. Power supply ..............................................................................................4
2.2. Accumulator charging.................................................................................4
2.3. Setting clock................................................................................................4
3. Numerical indication............................................................................................5
3.1. Zeroing the internal pressure sensor..........................................................6
3.2. Freezing of measurement value.................................................................6
3.3. Minimal / Maximal measurement values ....................................................7
3.4. Measurement values printout .....................................................................7
3.5. Contrast adjustment and lighting................................................................7
4. Check programs..................................................................................................8
4.1. Setup...........................................................................................................8
4.2. Pressure check...........................................................................................9
4.3. Preliminary check .......................................................................................9
4.4. Main Check...............................................................................................11
4.5. Usability Check.........................................................................................12
5. Clock set ...........................................................................................................14
6. Internal instrument settings...............................................................................15
6.1. Key beep on/off switch..............................................................................15
6.2. Pressure Auto -> 0 by start.......................................................................16
6.3. Choose printer (ecom-P) ..........................................................................16
6.4. Battery loading..........................................................................................16
6.5. Display damping .......................................................................................16
6.6. Pressure unit.............................................................................................17
6.7. Auto OFF function.....................................................................................18
6.8. Contrast ....................................................................................................18
6.9. Light..........................................................................................................18
7. Sensor setup.....................................................................................................19
8. View service information...................................................................................19
9. Data logger program „ecom-DP Logger“ ..........................................................20
10. Technical Data ecom-DP................................................................................21
11. Maintenance tip...............................................................................................22

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1. Design ecom-DP
Connections
Pmax = 1500 hPa
Connections (Option)
Pmax = 1500 hPa
oder Pmax = 70 hPa
IR interface
(for IR printer)
Function keys
(current function is
shown on display)
Connection loa-
ding unit
Graphic display
Cursor keys
OK-key
ON/OFF key

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2. Initialisation
2.1. Power supply
The ecom-DP is powered by 3 batteries or 3 accumula-
tors. The following types can be used to operate the in-
strument:
- Battery 1,5 V AA (Mignon)
- Battery 1,2 V AA NiCd (nickel cadmium)
- Battery 1,2 V AA NiMh (metal hydride)
If you are using a loading unit, please adjust the function
„Bat. Loading“ (see chapter 6.4.)
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 automat-
ically switch off.
2.2. 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 bat-
tery is fully charged, the BATTERY indicator on the dis-
play will blink. It is possible to operate the ecom-DP on
AC power during the charging procedure by pressing the
<ON> button.
2.3. 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.
Battery warning

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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:
1. Select with the cursor keys <RIGHT/LEFT> the posi-
tion to be changed (corresponding field blinks).
2. Adjust the correct numbers with the cursor keys
<UP/DOWN>.
3. Press <OK> to confirm correct date and time settings.
3. Numerical indication
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.
1. Before making measurements, the instrument must have
adapted the ambient temperature!
2. Make sure, that the ambient temperature remains constant
during measurement!
If „Pressure Auto -> O by start“ is set on
„YES“ (Chapter 6.2), so the internal pres-
sure sensors should be flown with pres-
sure first after the switch-on of the instru-
ment, as they are zeroed during
said switch-on procedure.

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3.1. Zeroing the internal pressure sensor
As the difference pressure sensor can drift because of its
sensitivity in the zero point (also by attaching to metal
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 sen-
sor 1.
- Press <F4> (DP2) to zero the value of the pressure sen-
sor 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“.
3.2. 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.
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.

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3.3. Minimal / Maximal measurement values
With <F3> (Min/Max) the determined minimal and maxi-
mal values since unit switch-on (or deleting via „CLR“)
can be called up.
- Press one time <F3> (Min/Max) to view the lowest de-
termined 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.
3.4. 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 in-
strument and the receiving diode of the printer. The dis-
tance between both instruments should not exceed 40
cm (1.3 foot), otherwise a trouble-free transmission is not
warranted at any time.
3.5. 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).
-----------------------------------
ecom-DP
-----------------------------------
Date Time
05.10.01 12:12:50
-----------------------------------
P1 0.0 (hPa)
P2 0.0 (hPa)
-----------------------------------
min max
P1 -0.1 0.1 (hPa)
P2 -0.1 0.1 (hPa)
-----------------------------------
ecom GmbH
Am Grossen Teich 2
58640 Iserlohn
Tel. [phone]

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4. Check programs
Call up the pre-programmed measurement routines „Pre-
liminary Check“, Main Check“ and „Usability Check“ in
the menu <F3> (PROC).
Parameters to each measurement routine can be ad-
justed in the menu „Setup“.
4.1. 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 rou-
tine:
Pressure Check
- Stabilisation time (1 - 10 min, default: 1 min)
- Measurement time (10 - 120 min, default: 5 min)
Preliminary Check
- Stabilisation 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
- Stabilisation 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
- Stabilisation 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:
1. Select the parameter with <UP/DOWN>.
2. Press <OK> to activate.
3. Use the cursor keys <RIGHT/LEFT> to select the po-
sition to be changed (corresponding field blinks).
1. Use only air or inert gas for check !
2. Respect the „Technical Rules for
Gas Installation“!

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4. Adjust the correct figure using <UP/DOWN>.
5. Press <OK> to confirm the corrected value.
4.2. Pressure check
Proceed as follows:
1. Close the conduit with a suitable adapter (part of
ecom-DPK).
2. Connect the components a described in ecom-DPK
manual.
3. Scroll with <UP/DOWN> until the menu „Pressure
check“. Activate with <OK>-Taste.
4. With the compressed-air pump create the pre-adjusted
test pressure (the unit beeps as soon as the pressure
level is achieved).
5. Interrupt the connection to the air pump (switch-off the
ball valve).
6. Wait for stabilisation time (if the pressure remains in
the range „test pressure +/- 10% during stabilisation time,
so the measurement time will start).
7. Once the measurement time is over, the result is dis-
played and can be sent to the IR printer (option) thus
pressing <F2> (Print).
8. 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>.

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4.3. Preliminary check
The preliminary check acc. to DVGW –TRGI Process In-
structions G 600 by pipes (operation pressure up to 100
hPa) is registered as a measurement routine in the
ecom-DP.
Proceed as follows:
1. Close the conduit with a suitable adapter (part of
ecom-DPK).
2. Connect the components a described in ecom-DPK
manual.
3. Scroll with <UP/DOWN> until the menu „Preliminary
check“. Activate with <OK>-Taste.
4. With the compressed-air pump create the pre-adjusted
test pressure (the unit beeps as soon as the pressure
level is achieved).
5. Interrupt the connection to the air pump (switch-off the
ball valve).
6. Wait for stabilisation time (if the pressure remains in
the range „test pressure +/- 10% during stabilisation time,
so the measurement time will start).
7. Once the measurement time is over, the result is dis-
played and can be sent to the IR printer (option) thus
pressing <F2> (Print).
8. If the menu „Preliminary 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>.

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4.4. Main Check
The main check acc. to DVGW –TRGI Process Instruc-
tions G 600 by conduits (operation pressure up to 100
hPa) is registered as a measurement routine in the
ecom-DP. Proceed as follows:
1. Close the conduit with a suitable adapter (part of
ecom-DPK).
2. Connect the components a described in ecom-DPK
manual.
3. Scroll with <UP/DOWN> until the menu „Main Check“.
Activate with <OK>-Taste.
4. With the compressed-air pump create the pre-adjusted
test pressure (the unit beeps as soon as the pressure
level is achieved).
5. Interrupt the connection to the air pump (switch-off the
ball valve).
6. Wait for stabilisation time (if the pressure remains in
the range „test pressure +/- 10% during stabilisation time,
so the measurement time will start).
7. Once the measurement time is over, the result is dis-
played and can be sent to the IR printer (option) thus
pressing <F2> (Print).
8. If the menu „Main Check“ is selected again, so the re-
sult can be called up with <F1> (as long as the ecom-DP
is on) or a new measurement can be started with <OK>.

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4.5. Usability Check
The usability check acc. to DVGW –TRGI Process form G 624 by conduits is mem-
orised as a measurement routine by the ecom-DP. The calculation of the leak rate
happens automatically according to the following equation and corresponds here-
with to the procedure of the DVGW-TRGI Process Form G 624:
VB = V/TM * ((PA + P1) / (PA + P2)-1) * PB / P1 * f
with: VB= Gas leak volume in operation state (l/h)
V = Pipe content in litres
TM= Measurement duration in hours
PA= Barometer stand in hPa
P1 = Test pressure at meas. beginning in hPa
P2 = Test pressure at measurement end in hPa
PB= Maximal gas operation pressure in hPa
f = Factor for consideration of gas type
Proceed as follows:
1. Close the conduit with a suitable adapter (part of
ecom-DPK).
2. Connect the components a described in ecom-DPK
manual.
3. Scroll with <UP/DOWN> until the menu „Suitabil-
ity/Leak rate“. Activate with <OK>.
4. The pipe volume to be checked (V) is needed for the
calculation of the leak rate. The ecom-DP offers two in-
put possibilities:
a. Direct input of pipe volume after having pressed
<F1> (ADD) (by repeated input the value will be
added).

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b. The ecom-DP will calculate the pipe volume in sec-
tions basing on the diameter and the length for thread
pipe acc. to DIN 2440 (middle heavy):
- Press <F2> (CAL).
- Use <UP/DOWN> to select the pipe diameter (1/2“
to 4“) and confirm with <OK>.
- Select pipe length with the cursor keys and confirm
with <OK>.
- The volume for thread pipe acc. to DIN 2440 (me-
dium heavy) will be calculated and added.
- Repeat procedure until all pipe sections are regis-
tered.
5. Quit the volume input with <OK>.
6. The maximal operation pressure adjusted in the setup
(PB) will be displayed. If need be, the value can be
changed using the cursor keys. Confirm the value with
<OK>.
7. The air pressure (PA) adjusted in the setup is dis-
played. If need be, the value can be changed using the
cursor keys. Confirm with <OK>.

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8. Use <UP/DOWN> to select the used gas type (f) and
confirm with <OK>. The following gas types are recorded
with their respective factors:
Natural gas
Air
City gas
Propane
Butane
Hydrogen
9. With the compressed-air pump create the pre-adjusted
test pressure (the unit beeps as soon as the pressure
level is achieved).
10. Interrupt the connection to the air pump (switch-off
the ball valve).
11. Wait for stabilisation time (if the pressure remains in
the range „test pressure +/- 10% during stabilisation time,
so the measurement time will start).
12. Once the measurement time is over, the result is dis-
played and can be sent to the IR printer (option) pressing
<F2> (Print).
13. If the menu „Usability 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>.

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5. Clock set
- Scroll with <UP/DOWN> until the menu point “Set
clock”.
- Press <OK> to activate. Date and time can be adjusted
as follows:
1. Select with <RIGHT/LEFT> the position to be changed
(corresponding field blinks).
2. Adjust the correct figures using <UP/DOWN>.
3. Confirm with <OK>.
6. Internal instrument settings
Further instrument settings can be performed in the
menu “Internal”. Press <OK> to access this menu.
6.1. Key beep on/off switch
- With the cursor keys <UP/DOWN> scroll until the menu
point “Key beep”.
- Activate with <OK>.
- With the cursor keys <RIGHT/LEFT> modify the adjust-
ment (YES or NO).
- Confirm with <OK>.

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6.2. Pressure Auto -> 0 by start
The ecom-DP normally zeroes the internal pressure sen-
sor during switch-on (adjustment „YES“). If the instru-
ment is to remain connected to a pressure source, so this
adjustment can be modified:
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Pressure auto -> 0 by start”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to modify the ad-
justment (YES or NO).
- Confirm the modification with <OK>.
6.3. Choose printer (ecom-P)
Please choose the used printer as follows:
- Scroll with the cursor keys <UP/DOWN> until the menu
point “ecom-P”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to modify the ad-
justment (YES = printer ecom-P or NO = printer HP
82240B).
- Confirm the modification with <OK>.
6.4. Battery loading
The ecom-DP is able to work with accus and AC power
(option):
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Battery loading”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to modify the ad-
justment (YES = using AC power for charging accus or
NO = no AC power used).
- Confirm the modification with <OK>.
6.5. Display damping
The display damping can be adjusted to various meas-
urement duties. 7 damping steps can be selected (1 = no
damping; 7 = high damping).

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Additionally the damping steps 3 - 7 enable the selection
of a damping progression. This means:
not progressive:
by massive pressure changes the display does not react
faster than by small pressure changes
low progressive:
by massive pressure changes the display reacts some-
what faster than by small pressure changes.
high progressive:
by massive pressure changes the display reacts much
faster than by small pressure changes.
- To change the adjustment, scroll with the keys
<UP/DOWN> until the menu point “Damping”.
- Press <OK> to activate.
- Adjust the desired damping step using the cursor keys
<RIGHT/LEFT>.
- Press <OK> to confirm.
6.6. Pressure unit
The measuring unit of the internal pressure sensor can
be changed. The following units are selectable:
Hectopascal hPa
Centimetre water column cmH2O
Millimetre mercury column mmHg
Pound per square inch PSI
Inch water column “H2O
Inch mercury column “Hg
For modification:
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Pressure unit”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to adjust the de-
sired unit for the pressure sensor.
- Press <OK> to confirm.

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6.7. Auto OFF function
The ecom-DP is able to switch off automatically after 270
sec.:
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Auto OFF function”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to modify the ad-
justment (YES = activate the function or NO = disable the
function
- Confirm the modification with <OK>.
6.8. Contrast
The contrast of the display can be adjusted with the help
of the cursor keys <RIGHT/LEFT>:
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Contrast”.
- Press <OK> to activate.
- To increase the contrast use cursor key <RIGHT>.
- To decrease the contrast use cursor key <LEFT>.
- Confirm the modification with <OK>.
6.9. Light
The lighting of the display can be switched ON and OFF.
- Scroll with the cursor keys <UP/DOWN> until the menu
point “Light”.
- Press <OK> to activate.
- Use the cursor keys <RIGHT/LEFT> to modify the ad-
justment (NO / 1, 5, 10 or 30 minutes / --- permanent light-
ing)
- Confirm the modification with <OK>.
Press <F2> (ESC) to quit the menu “Internal”.

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7. Sensor setup
The sensors in the instrument are given factory specified
designations that can be changed by the user. Using the
<UP/DOWN> cursor keys, scroll to “Sensor setup” menu.
Press <OK>. Using the <UP/DOWN> cursor keys, select
the sensor to be renamed and enter the edit function by
pressing <OK>.
A maximum of 6 characters (letters, numbers and special
characters) can be used in the sensor designation. Using
the <UP/DOWN> cursor keys, select the position to be
changed (sign blinks). Use the <UP/DOWN> cursor keys
to select the character that should stand on this position.
Starting from the current one and using the <UP> key,
the following characters are stored in the instrument in
the following succession:
Blank sign
A - Z
a - z
Ä -Ü
ä - ß
0 - 9
Special characters
Once the renaming procedure is complete, press <OK>
to store.
8. View service information
- Use the cursor keys <UP/DOWN> to scroll thru until the
menu point “Service”.
- Press <OK> and an info window will be opened in which
the address and phone number of the competent service
centre as well as the instrument version (e.g. ECOM DP
V3.1) will be displayed.

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9. Data logger program „ecom-DP Logger“
The measured value process of the ecom-DP can be logged with the help of the
data logger program „ecom-DP Logger “. The program can be loaded free of charge
from the download area of the ecom homepage www.ecom.de. To transfer the data
a USB cable (kind becomes. - No.: 55818) and a driver (free download from
www.ecom.de) is needed. The measured value rows can be stored in the xls format
(Excel).
The USB cable can be used as the power supply for
the ecom DP. Therefore the function „Battery loading“
must be adjusted on „no“ when using
1,5 V AA (Mignon) batteries (see 6.4.)!