General information Contents General information ......4 Commissioning on delivery with optional rechargeable battery ........4 Information on the operating instructions ..4 Notes in the operating instructions ....4 Intended use ..........5 Basic equipment ..........6 Hand strap ............. 6 Transportation ..........
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General information Leak test on gas pipes ......... 29 Leakage rate test of gas pipelines ....33 Pipe volume measurement ......39 Measurements on water pipes ..42 Leak test performed with air on drinking water pipes ............43 9.1.1 Preperations for the measurement ....44 Stress test on drinking water pipes with air ..
Wöhler SC 602 Smart Connect. erating instructions Keep these operating instructions in a safe place. The Wöhler SC 602 may only be used by trained professionals for the intended purpose. We accept no liability for damage resulting from failure to observe these operating instructions.
General information Intended use The Wöhler SC 602 is to be used for differential pressure, absolute pressure, temperature meas- urement as well as humidity registration. In connection with the app, the device is intended for the following applications: Load and leak test and serviceability test (pres-...
Hand strap and bag 1,5 V Hand strap The Wöhler SC 602 is supplied with a hand strap. If you want to use the hand strap, mount it as follows: Remove the battery cover on the back of the •...
Specification Specification Measured values Differential pressure measurement Description Reading (temperature-compensated piezo bridge) Preset unit Measuring range ± 3.000 hPa Permissible overload ± 3.200 hPa Accuracy < 3% of the measured value; in the range < ± 2 hPa better than ± 0.06 hPa Resolution 0.01 Pa in the range...
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Specification External temperature measure- Description Reading ment Measuring range -20,0 °C to +800,0 °C (with a temperature clamp probe or surface temperature sensor) Accuracy < ± 1°C in the range from -20°C to 67°C, otherwise 1.5% of the measured value, in acc.
Specification Calculated values Calculated Calculation parameter Pressure units Conversion to hPa, Pa, O, PSI, in , bar, mbar in accordance with the gen- erally accepted conversion guidelines. Temperature Conversion from °C to °F in units accordance with the general- ly accepted conversion guidelines.
Specification Logger function Description Reading Scope 9999 measurements, each with measured values for pressure and humidity, as well as two measured values for temperature (with external sensors con- nected) with freely selectable scanning intervals ranging from 1 second to 24 h can be saved in the inter- nal memory.
Specification Technical data Description Reading Power supply 2 batteries 1,5 V, AA LR6 Power supply Lithium-Polymer battery 3,7 V, 700 mAh, charged via USB (optional) Battery charging cyc- After 500 charging cycles at least 70% of the battery's ca- pacity should still be available. (optional) Charging time battery (optional)
Structure and functions Structure and functions 8 (back side) Fig 3: Wöhler SC 602 Manometer Operating but- Keystroke Functions ton (1) Long on/off Short Zero pressure Measuring mode Double click Printout of measured values on thermal printer Short Make selection...
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Structure and functions Number Function Operating button USB-C- charging connection (optional, only for battery operation) Display colorful adhesive dot for device marking 5 Pressure connection Main connection for differential pressure measurement (right) (positive) 6 Pressure connection Reference connection for differential pressure meas- (left) urement (negative)
Switch on Switch on WARNING! Due to the compressibility of gases, the accident prevention regulations "Working on gas installa- tions" and the rules and regulations "Technical rules for gas installations DVGW-TRGI" must be observed for all pressure tests with air or inert gas for safety reasons.
Battery level indicator: • 3 dashes: high battery voltage Flashing: very low battery voltage Middle line : Current measured pressure Fig. 5: Wöhler SC 602 display • Units selectable via Wöhler Smart Connect Bottom line: internally measured temperature or •...
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Switch on The differential pressure is always shown in the display without a sign. Instead, there is a plus sign (+) under the pressure port through which the higher value is measured and a minus sign (-) under the pressure port with the lower value.
Make settings directly on the device Make settings di- All settings on the Wöhler SC 602 can be made quickly and conveniently via the Wöhler Smart rectly on the device Connect app. However, it is possible to make some settings on the device via the operating button.
Make settings directly on the device Deactivate automatic The display shows “Auto Off“. shutdown function The device switches off automatically after one hour if no button has been pressed. This auto-off function can be deactivated at this point. Press the operating button briefly to switch •...
• ture socket on the underside of the device (Fig. 3, part 6). Fig. 8: Wöhler SC 602 with ambient air temperature sensor Connection fittings for load, leak and usability testing with Wöhler Gas Line Sealing Set and High Pres- sure Plug.
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Make settings directly on the device Wöhler Gas Line Sealing Set: 1 Valve block 2 Connection hose to the pressure gauge 3 Connection hose to the air pump 4 Connection hoses to the gas pipe Fig. 10: Wöhler Wöhler Gas Line Seal- ing Set...
Checking the measurement equipment Checking the measurement equipment Before each use, the Wöhler SC 602 test set should be checked for leaks. To do this, proceed as follows: Switch on the Wöhler SC 602. • Connect a commercially available PET bottle •...
Wöhler Smart Connect App Wöhler Smart Settings, further measurements and data man- agement can be carried out via the Wöhler Smart Connect App Connect App "Wöhler Smart Connect". System requirements A Bluetooth-enabled terminal device with the fol- lowing operating system is required: for the end device Android 7.0 or higher •...
Refer to and comply with accident prevention reg- ulation of your country • Connect the right pressure connection of the Wöhler SC 602 via a hose to the test plug. Connect a compressed air pump via the Wöh- • ler leak tightness testing set.
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Measurements on gas pipes NOTE! If you are using the Wöhler Gas Pipe Tightness Set, refer to the operating manual for this Set. Fig. 14: Example: Wöhler Gas Line Sealing Set for gas pipes...
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Measurements on gas pipes The preset test pressure, the stabilization time and the measurement time are now shown. The user can individually adjust the presets by tapping the white fields. The set values are saved and adopted for further tests. NOTE! We strongly recommend performing measure- ments using the default presets, as these comply...
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Measurements on gas pipes A prompt appears asking you to “Please increase the test pressure to 1000 hPa.” • Use the air pump to keep pumping air into the pipe until the Wöhler Pressure Meter indicates a pressure of at least 1000 hPa. Once the preset test pressure of 1000 hPa is •...
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Measurements on gas pipes At the end of the measuring time, the result • display appears automatically. The test result is OK if the following conditions are met: The start pressure is greater than or equal to the set test pressure. The measuring time was observed.
Measurements on gas pipes Leak test on gas pipes Leak test in accordance with DVGW-TRGI 2018 is carried out after the stress test or any time chang- es are made to the gas pipe. The test is per- formed without gas devices and with the fit- tings/valves closed.
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Measurements on gas pipes The preset test pressure, stabilization time, and measurement time are now displayed. The user can individually adjust all presets by tapping the white fields. The set values are saved and adopted for further leak tests. NOTE! It is strongly recommended to measure with the preset values, as these correspond to the re- quirements of the current DVGW - TRGI.
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Measurements on gas pipes As soon as the test pressure is reached, the stabi- lization phase starts. After the stabilization time has elapsed, the measurement starts automatical- During the measurement (10 minutes), the current pressure is displayed in a graphic in the display. The remaining measuring time appears above the graphic.
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Measurements on gas pipes Tap "Create PDF" in the results display to • generate a measurement report in PDF for- mat. The measurement report contains the meas- urement data and, on page 2, the measurement progress as a graphic. Tap the Share button to send the measure- •...
The leakage rate test can be used to check the usability of gas pipelines that are already in operation. Measuring principle of the pressure The leakage rate test with the Wöhler SC 602 drop method is carried out according to the pressure drop method.
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Measurements on gas pipes NOTE! To inflate the line, you will need a compressed air pump (possibly electric compressor) and the valve block from the Wöhler Gas Line Sealing Set. Seal the pipe and insert a suitable test plug. • WARNING! Refer to and comply with accident prevention reg- ulation of your country...
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Measurements on gas pipes NOTE! According to the TRGI guidelines, the measuring and stabilization times depend on the pipe vol- ume. Information about the measuring and stabili- zation times based on the requirements of DVGW G 5952 can be called up by tapping the blue fields Stab.
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Measurements on gas pipes Shorten stabilization time? According to DVGW guideline G 5952, the stabilization time can be shortened if the following stability criteria are met over a period of 2 min during the adjustment time: Pressure fluctuations < 0.5 mbar; leakage rate fluctuations <...
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Measurements on gas pipes At the end of the measurement time, the meas- urement results and an evaluation are shown. • Scroll across the screen to see all the results. NOTE! The result displays have the following meaning according to the requirements of the TRGI. The Gas Line is: Unrestricted usable: Leakage rate 0-0.9 l/h Reduced usable: Leakage rate 1.0-4.9 l/h...
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Measurements on gas pipes Tap "Create PDF" in the results display to • generate a measurement report in PDF for- mat. The measurement report contains the measure- ment data and, on page 2, the measurement pro- gress as a graphic. Tap the Share button to send the measure- •...
Measurements on gas pipes Pipe volume measurement Measuring principle pipe volume If a known sample volume V is taken from a Probe measurement pipe system using a suction pump (syringe or soot test pump), the total volume V can be deter- Rohr mined from the resulting pressure Δp.
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• WARNING! Refer to and comply with accident prevention reg- ulation UVV BGF D2. Switch on the Wöhler SC 602 and then con- • nect the (+) pressure connection via a hose to the test plug. Connect a soot test pump/syringe via a sec- •...
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Measurements on gas pipes In the gas overview, select “Volume meas- • urement” The view for pipe volume measurement • opens. If necessary, tap the >0< button to zero the • pressure sensor. Estimate the pipe volume and enter the ap- •...
In the overview page of the app, tap on the "Water" menu to call up the measurements on water pipes. In the water menu, the Wöhler SC 602 can be used to perform tests on water pipes according to DIN EN 806 with air.
Measurements on water pipes Leak test performed with air on drinking water pipes The leak test on a drinking water pipe must be carried out with air if there will be a longer period of non-use after the leak test before commissioning is performed, particularly if average am- bient temperatures >...
Use a suitable test connection (e.g. high- • water pipe pressure plug). Switch on the Wöhler SC 602 and connect it • to the app. After the zeroing phase, connect the positive • pressure connection to the test connection us- ing a hose and adapter.
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Measurements on water pipes The preset test pressure, the stabilization time and the measurement time according to DIN EN 806-4 are displayed. The user can set the specifications individually by tapping on the white fields. The set values are saved and used for further leak tests. Fig.
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Measurements on water pipes As soon as the test pressure is reached, the stabi- lization phase starts. After the stabilization time has elapsed, the measurement starts automatical- During the measurement (10 minutes), the current pressure is shown in a graphic in the display. The remaining measuring time appears above the graphic.
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Measurements on water pipes After the measuring time has elapsed, tap “Next“ to access result display. The test result is OK if the following conditions are met: The start pressure is greater than or equal to the set test pressure. The measuring time was observed.
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Measurements on water pipes Tap "Create PDF" in the results display to • generate a measurement report in PDF for- mat. The measurement report contains the meas- urement data and, on page 2, the measurement progress as a graphic. Tap the Share button to send the measure- •...
• WARNING! Due to the high test pressure, it is essential to seal the line with a high-pressure stage plug. Switch on the Wöhler SC 602. • In the app select water > Stress test (air) in • the measuring menu Tap the >0<...
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Measurements on water pipes NOTE! If you use the Wöhler gas line line sealing set for the connections, please observe the correspon- dant manual. NOTE! For the stress test, the test pressure depends on the pipe diameter. The stress test is performed with a maximum test pressure of 0.3 MPa (3 bar).
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Measurements on water pipes The preset test pressure, stabilization time and measurement time are now shown. The user can set the defaults individually by tap- ping on the white fields. The set values are saved and adopted for further load tests. Tap the >0<...
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A prompt “Please increase test pressure“ ap- pears. • Pump air into the line using the air pump until the Wöhler SC 602 has reached the preset test pressure. When the preset test pressure is reached, the • stabilization phase starts automatically.
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Measurements on water pipes At the end of the measurement time, the result • display appears automatically. The test result is OK if the following conditions are met: The start pressure is greater than or equal to the set test pressure. The measuring time has been observed.
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Measurements on water pipes Tap "Create PDF" in the results display to • generate a measurement report in PDF for- mat. The measurement report contains the meas- urement data and, on page 2, the measurement progress as a graphic. Tap the Share button to send the measure- •...
Battery change Battery change Switch off the device. • Remove the battery cover on the rear side. • Replace the batteries with 2 new batteries1.5 • V AA LR6. Observe the correct polarity according to the • labeling in the battery compartment. Maintenance Interval Maintenance work...
If used properly, the warranty period for the Wöh- ler SC 602 is twelve months from the date of sale. Damage to the pressure sensor caused by over- loading is excluded from this warranty.
Wöhler thermal printer TD 100 Order.-Nr. 4160 Thermal paper, 10 rolls Order.-Nr. 4145 Measuring hose SC 602, 1,5 m length with quick coupling and Order.-Nr. 9237 adapters for measurement with gas bladder Measuring hose SC 602, 1,5 m length with quick coupling and Order.-Nr.
WÖHLER Technik GmbH Wöhler-Platz 1, D-33181 Bad Wünnenberg declares, that the product: Product name: Wöhler SC 602 Smart Connect complies with the essential protection requirements laid down in Directive 2014/53/EU of the European Parliament and of the Council on the harmonisa- tion of the laws of the Member States relating to the making available on the market of radio equipment.
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