Dräger P7-TDX Quick Reference Manual

Dräger MSI GmbH Tel.: [phone] / 9584 - 0 5695071
Rohrstr. 32 Fax: [phone] / 9584 – 29 Edition 02 – January 2019 (Edition 01 – May 2017)
58093 Hagen Email: [e-mail] en

Dräger P7-TDX – Quick Reference Guide

Any use of the Dräger P7-TDX requires the full understanding of and compliance with the
instruction manual 5695070 (P7-TDX) for this device.

The instruction manual can be found on our website www.draeger-msi.de/en in the menu item
Services >Downloads>P7 >Operating Instructions.
You can find the measurement data management software PC200P, which you can download after a brief
registration using your device number and your address data, in the menu item Services >Downloads >P7>

Software.

Only charge the Dräger P7 using the corresponding charger.

Key functions

Switching on: Simultaneously press the keys “F” and “H” for 1 second.
Switching off: Press the “F” key for more than 3 seconds or select “Switch off” in the “Functions” area.

All other key functions are shown on the display directly using the keys!

Functions

The individual tests and measurements are accessed via the “Functions” menu.

Pressure measurements

1. High pressure up to 0.35 MPa (3.5 bar)

Use pressure hose with pneumatic quick coupling NW5

2. Medium pressure up to 150 hPa (mbar)

3. Micro pressure up to 100 Pascal

4. Medium pressure up to 150 hPa (mbar) with pump function

5. High pressure up to 2.5 MPa (25 bar) (with external high pressure sensor)

6. Pressure monitor

7. Differential pressure (+/- 2 MPa (20 bar))

Follow the instructions for the Dräger P7 for pipeline testing!

Manual tightness test with absolute pressure and temperature compensation

Test pressure, stabilization period and measurement period can be set during the manual tightness test.

1. Select measuring channel 0 - 150 hPa (mbar), 0 - 3,500 hPa (mbar) or 0 - 25,000 hPa (mbar)

2. Select test pressure: 10 - 150 hPa (mbar), 100 - 3,500 hPa (mbar) or 1,000 - 25,000 hPa (mbar)
If a tightness test was selected in the 0 - 150 hPa (mbar) measuring channel, the internal or an external
pump can be used, to build up the test pressure. Tests with the 3,500 hPa (mbar) or 25,000 hPa (mbar)
channels can only be conducted using an external pump.

3. Select stabilization period: 00:01 - 48:00 h

4. Select measurement period: 00:01 - 48:00 h

5. Enter temperature correction factor: 0 - 100% (only effective if temperature sensor is connected)
The percentage of the exposed pipeline can be entered for partially underground pipelines (constant
temperature). Only the temperature change in the exposed pipeline is then corrected.

Dräger MSI GmbH Tel.: [phone] / 9584 - 0 5695071
Rohrstr. 32 Fax: [phone] / 9584 – 29 Edition 02 – January 2019 (Edition 01 – May 2017)
58093 Hagen Email: [e-mail] en

Gas pipelines:

1. Serviceability (TRGI G 600) without dismantling the gas meter

Gas leak rate < 1l/h = unrestricted serviceability
Gas leak rate 1 l/h < 5 l/h = reduced serviceability (repair within 4 weeks)
Gas leak rate > 5 l/h = no serviceability (shut down immediately)
The actual operating pressure must be set as the nominal operating pressure for operating
pressures > 30 hPa (mbar); otherwise the operating pressure must be set to 23 hPa (mbar).
Use “leak measurement with regulator in line” for pipelines with a pressure regulator. The test pressure
is released under operating pressure, to fully open the regulator. The quick test and the measurement
for expanded volume are not DVGW (German competence network for all questions related to gas
and water supply) tested and cannot be stored. Depending on the stability in the gas pipeline, a quick
test can be conducted in approx. 7 minutes. The measurement for expanded volume enables
measuring pipelines with up to 800 liters of volume.

2. Automatic tightness test (TRGI G 600) 150 hPa (mbar)

3. Tightness test with external pump (TRGI G 600) 150 hPa (mbar)

Our recommendation for pipeline volumes exceeding 100 l.

Adaptation time and test duration for tightness tests according to TRGI G 600

4. Stress test (TRGI G 600) 0.1 MPa (1 bar) (0.3 MPa (3 bar) for medium pressure systems)

always with external pump
Use pressure hose with pneumatic quick coupling NW5.
Stabilization period 2 - 10 minutes
Measurement period 10 minutes
Medium pressure systems: Stabilization period: 180 minutes
Measurement period: 120 minutes
The test duration must be prolonged by 15 minutes per additional 100 l of pipeline volume for
medium pressure systems with pipeline volumes exceeding 2000 l.

LPG pipelines:

1. Automatic tightness test (TRF) 150 hPa (mbar)

Stabilization period 10 minutes
Measurement period 10 minutes

2. Tightness test with external pump (TRF) 150 hPa (mbar)

Stabilization period 10 minutes
Measurement period 10 minutes

3. Strength test (TRF) 0.1 MPa (1 bar) 10 minutes for pipelines above ground

always with external pump
Use pressure hose with pneumatic quick coupling NW5.
Stabilization period 10 minutes
Measurement period 10 minutes

4. Strength test (TRF) 0.1 MPa (1 bar) 10 minutes for partially underground pipelines

always with external pump
Use pressure hose with pneumatic quick coupling NW5.
Stabilization period 30 minutes
Measurement period 10 minutes

Pressure Volume Adaptation time

Test

duration

150 hPa (mbar) < 100 l

10 min 10 min

150 hPa (mbar)

≥ 100 l
< 200 l

30 min 20 min

150 hPa (mbar) ≥ 200 l

60 min 30 min

Dräger MSI GmbH Tel.: [phone] / 9584 - 0 5695071
Rohrstr. 32 Fax: [phone] / 9584 – 29 Edition 02 – January 2019 (Edition 01 – May 2017)
58093 Hagen Email: [e-mail] en

Water pipelines:

1. Automatic tightness test (DIN EN 806) 150 hPa (mbar)

Enter the volume of the water pipeline
Stabilization period 2 - 10 minutes
Measurement period 120 minutes for a volume up to 100 l
The measurement period is prolonged by 20 minutes for each additional 100 l of pipeline volume.

2. Tightness test (DIN EN 806) 150 hPa (mbar) with external pump

Enter the volume of the water pipeline
Stabilization period 2 - 10 minutes
Measurement period 120 minutes for a volume up to 100 l
The measurement period is prolonged by 20 minutes for each additional 100 l of pipeline volume.

3. Stress test up to DN50 max. of 0.3 MPa (3 bar) or up to DN100 0.1 MPa (1 bar) (DIN EN 806)

always with external pump
Use pressure hose with pneumatic quick coupling NW5.
Stabilization period 2 - 10 minutes
Measurement period 10 minutes

4. Press connections (unpressed untight) with water 0.6 MPa (6 bar) (DIN EN 806)

with external high pressure sensor
Stabilization period 10 minutes
Measurement period 15 minutes

5. Tightness test with water 1.1 MPa (11 bar) (DIN EN 806)

with external high pressure sensor
Stabilization and measurement period depends on the material

Sewage lines:

Test method LC (100 hPa (mbar)) and LD (200 hPa (mbar))

Use pressure hose with pneumatic quick coupling NW5.
Stabilization period 5 minutes
Test time: depends on material and pipe diameter

Regulator testing:

1. Static pressure – valve upstream of the consumer closed

Pressure increases regulator untight

Pressure drops and then increases again ball valve and regulator untight

Pressure remains constant ball valve and regulator OK

2. Flow pressure – all valves open, consumer operating

Pressure fluctuates significantly regulator defective (sticky membrane)

Pressure remains nearly constant regulator OK

3. SAV (safety shut-off valve) pressure – valve upstream of the SAV open, valve upstream of the
consumer closed

Increase pressure downstream of the regulator (secondary side)
If the SAV is triggered, the gas supply on the primary side is blocked (loud clicking).
The SAV pressure is the pressure (secondary side) at the time of clicking.

4. SBV (safety bleed valve) pressure – valve upstream of the SBV open, valve upstream of the
consumer closed

Increase pressure downstream of the regulator (secondary side)
If the SBV opens, the gas is released on the secondary side (hissing).
The SBV pressure is the pressure (secondary side) at the time of opening.

After completion of the measurement, all measurements can be printed using an infrared printer or stored in
the Dräger P7.

Dräger MSI GmbH Tel.: [phone] / 9584 - 0 5695071
Rohrstr. 32 Fax: [phone] / 9584 – 29 Edition 02 – January 2019 (Edition 01 – May 2017)
58093 Hagen Email: [e-mail] en

Info

Information pertaining to the measuring device – e.g. type, manufacturer, software version, serial number

Configuration

1. Clock = set date and time

2. Leak Auto Start = activation of the automatic start for leak rate measurement

3. P Damping = selection of the damping value for the pressure measurement

4. Backlight = adjust backlight

5. Key beep = switch key tone on/off

6. Auto Switch Off = selection of the time before the device goes into standby mode

7. Printer = selection of printer protocol and printout of customer and tester

8. Touch pad = calibration of the touchpad

9. Info window = switching the swipe effects on and off in the info window

10. Enable delete function = allow a single measurement dataset to be deleted

11. Language = language selection for the display texts

The device is only intended for the applications described here. To ensure proper functioning and accurate
measurements, the device must be inspected and recalibrated once a year by an authorized service center.
EC regulations pertaining to the disposal of electrical and electronic equipment have been effective since 2005.
In essence, these regulations govern the establishment of collection and recycling facilities for private users.
Given that the Dräger P7 is not registered for use in private households, it is also not permitted to be disposed
of using these channels.
The Dräger P7 can be returned to your national retailer or to your national Dräger Safety Organization for
disposal. Please contact the Dräger MSI GmbH if you have any questions regarding disposal.

Accessories and consumables

Single pipe cover DN 25 5600842
Single pipe cover DN 40 5600985
½” adapter 5600813
Gas pressure hose 5600365
High pressure hose 5600821
Low pressure hose 5610693
Pump hose 5610692
High pressure gas distributor 5610691
Pump adapter 10 bar 5600882
Pump adapter 150 mbar 5600876
Pressure sensor EP35 (3.5 bar) 5600875
Pressure sensor EP250 (25 bar) 5600877
Hand pump 5600880
Equipment case P7 series 5600968
Plug-in charger P7 5680106
Printer with infrared data transmission 5600401
Printer paper for printer 5690151