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Wohler DC 410FLOW, User Manual

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Wohler DC 410FLOW User Manual Download Page 23

Measurement Modes in the Main Menu 

23 

6

 

Measurement Modes in the Main Menu 

6.1

 

Selecting the 
Main Menu 

Press "menu" to switch to the main menu. In the 
main menu, all submenus and applications can be 
activated. The following options can be selected: 

Fig. 17: Main menu 

6.2

 

Option „Air 
Speed

“ 

Fig. 18: Connection of the S-tube probe 
to the Wöhler DC 410

FLOW

 

In this mode the air speed (v) of the gas is meas-
ured in m/s when the gas temperature is up to 
800°C.  

  NOTE! 

An S-tube probe (see accessories) is needed for 
this measurement. 

The wanted signal of the Wöhler S-tube probe is 
better than that of a normal pitot tube, if the flow 
speed is equal. In the setup-menu the pitot factor 
0.93 must be set once (see chapter 6.12). 

Summary of Contents for DC 410FLOW

Page 1: ...Technology Manual Pressure Differential and Flowmeter Art n 22627 2012 08 26 W hler DC 410FLOW 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEqu...

Page 2: ...Data 10 3 Component Explanation 11 3 1 Basic Unit 11 3 2 Probes and Components 13 3 3 Function 15 3 4 Functions 16 3 5 Display and Key Setup 16 4 Getting Started 18 4 1 Check Battery Status 18 5 Opera...

Page 3: ...Volume 46 6 9 Graph Record 48 6 10 Printing out Measurement Records 50 6 11 Option Save measurements 51 6 12 Option SETUP 51 7 Option Data management 53 7 1 1 Save Customer Records 54 7 1 2 Creating...

Page 4: ...ATTENTION Not following this note can cause permanent damage to the device NOTE Useful information 1 3 Intended Use The meter can be used for the measurement of differential pressure airflow air spee...

Page 5: ...he pressure connectors have to be protected by the protection cap The case is included in the sets and can also be bought separately 1 6 Information on disposal Electronic equipment does not belong in...

Page 6: ...value is 10 Pa better than 0 3 Pa Resolution 0 1 Pa at 1 100 Pa to 1 100 Pa otherwise 1 Pa Measurement of very small pressures Description Data Range 100 Pa Accuracy 3 of the reading if the value is...

Page 7: ...nternal sensor Description Data Range 0 to 100 rh rela tive humidity non condensing Accuracy 2 RH in range 0 to 90 RH otherwise 3 RH Resolution 0 1 RH Barometric Pressure integrated barometric pressur...

Page 8: ...Specifications 8 Air speed Description Data Range 0 3 m s to 120 m s Resolution 0 01 m s Continuous density correction automatic with temperature signal...

Page 9: ...sensors are connected can be stored in the internal memory The user can set the log rate from 1 second to 24 hours USB interface for data transfer to a PC Permanent online da ta already during the reg...

Page 10: ...and processor Interfaces USB COM Port data transfer to the PC It is possible to trans fer the data directly from the meter to the W hler TD 600 ther mal fast printer Storage temperature 20 C to 60 C O...

Page 11: ...Component Explanation 11 1 3 3 Component Explanation 3 1 Basic Unit Fig 1 Overview 2 4 5 6 7 8 9 10 11 12...

Page 12: ...key for 3 seconds to turn off the unit 8 Infrared interface Thermal fast printer to print out the measurement report 9 Overpressure socket Main connection 10 Underpressure so cket Reference socket for...

Page 13: ...3 Insert the plug of the S tube probe into jack 11 Fig 1 of the W hler DC 410 FLOW Connect the overpressure hose turned against the flow of the S tube probe to the overpres sure socket Fig 1 part 9 a...

Page 14: ...splay as T1 and the one measured by the meter con nected to jack 12 will be shown as T2 NOTE Any thermocouple type K may be connected to the jacks 12 and 13 Fig 5 Connecting the Special Wall Temperatu...

Page 15: ...Component Explanation 15 3 3 Function Pressure sensor Pressure socket Absolute pressure and humidity sen sor Fig 6 Interior structure of the meter Pressure socket...

Page 16: ...efore it is ideal to determi nate the air speed gas pressure volume tension and also the flue gas temperature is registered A maximum measuring range up to 100 hPa and a burst pressure of 0 75 bar pro...

Page 17: ...own in the left status segment Date and time customer if selected system diagnosis status and battery level are shown in the status segment on the right The readings segment displays the readings or t...

Page 18: ...eries can cause injury Never expose the battery to fire or high tempera tures Danger of explosion Liquids can leak out of the batteries due to mis treatment Never touch the liquid If you got in contac...

Page 19: ...ion of the DC 430 FLOW Fig 1 part 3 Fig 10 Open the battery compartment Standard AA rechargers can be used for external charging when the batteries are not located in the analyzer To remove the batter...

Page 20: ...e the meter is per forming the self check and do not expose it to any differential pressure because the pressure sensor will automatically be zeroed during the self test 5 2 Measuring Fig 13 Measuring...

Page 21: ...ig 15 Zoom feature In the measuring mode press the up or down key to enter the zoom mode When the read ings are zoomed in they can be read even from a distance In the zoom mode three val ues are indic...

Page 22: ...n any magnetic material surface It is also possible to fix the W hler DC 410 FLOW with the supporting loop during the measurement ATTENTION Do NOT place the Pressure Computer unse cured it can fall do...

Page 23: ...Main menu 6 2 Option Air Speed Fig 18 Connection of the S tube probe to the W hler DC 410FLOW In this mode the air speed v of the gas is meas ured in m s when the gas temperature is up to 800 C NOTE A...

Page 24: ...If necessary adapt the S tube to the cross section of the gas line with the help of the two knurled screws NOTE The S tube must be adjusted before the meas urement procedure starts since it is require...

Page 25: ...gh go to the Setup menu and select Attenuation fine see chapter 6 12 6 2 2 Theoretical Background The W hler DC 410 FLOW will calculate the air speed automatically according with the following formula...

Page 26: ...e airflow is calculated from the surface area and the air speed Formula 3 The Airflow is indicated in the unit which has been selected in the setup menu Underneath the airflow is indicated in the othe...

Page 27: ...measuring with the correct area value 6 3 2 Grid point Measurements The readings shown in the display are instantane ous values The W hler DC 410 Flow can do grid point meas urements This means that t...

Page 28: ...value as the velocity 1 The airflow is indicated in the upper part of the display as the result of the measurement 1 Press Return to bring up the measurement menu Press Proceed to start a new measurem...

Page 29: ...a report Fig 26 Finish the measurement In the Evaluation menu select Finish meas urement top of the display to finish the measurement Fig 27 Main menu when the readings have been accepted In the main...

Page 30: ...re lated to l s The k value is entered into the meter related to l s The air flow will be indicated by the W hler DC 410 FLOW in l s and in m 3 h The DC 410 Flow will calculate the airflow according...

Page 31: ...re and the underpressure socket to the aperture with the lower pressure NOTE If the hoses are wrongly connected the reading will be negative In this case inverse the hoses Fig 29 Example Fixing with a...

Page 32: ...rature value measured by the sensor con nected left and T2 is the temperature sensor measured by the sensor connected right Differential pressure PD Air density k value Underneath the k value entered...

Page 33: ...e has stabilized and then press Stop Press Accept to accept and save the value In the main menu a tick mark beside the menu airflow k value will indicate that the meas urement has already been done NO...

Page 34: ...is installed and another room which is not connected e g outside air stairway etc Before starting the measurement two flexible capillary hoses must be connected see accessories The pressure sensor of...

Page 35: ...re profile during the 4 Pa Test The second capillary hose will stay uncut in the fireplace room 7 Press PD 0 to zero the pressure sensor 8 Press Start measurement to start the 4 PA Test The DC 410 FLO...

Page 36: ...Measurement Modes in the Main Menu 36 NOTE Press Stop to stop the 4 PA Test earlier...

Page 37: ...ressure drop caused by opening and closing the window is less or equal to 4 Pa 8 Pa in the case of wood burning without surround ing air After the 4 Pa test is completed 4 Pa Test will be marked by a...

Page 38: ...the up or down key Confirm with OK Potential improvement points Flue gas loss Fig 41 Standard characteristic curve Fig 42 Entering the Flue gas loss The Flue gas loss function will convert the most re...

Page 39: ...e ventilation loss has to be measured 30 se conds after burn out It is based on the measure ment of the air speed and of the temperature of the residual core flow The test fulfills the require ments o...

Page 40: ...quipped with an am bient pressure probe so that the meter will de termine the ambient pressure automatically Press Procced A message will appear Zeroing pressure sensor Remove hoses 16 Confirm with OK...

Page 41: ...46 Measuring the ventilation loss The measurement will be done automatically 21 When the burner is turned off press Start to start the data recording After 30 seconds the data recording will start au...

Page 42: ...m 2 v t Air speed in the flue gas pipe in m s air air density temperature compensated e g 20 C 1 2 kg m3 cpl specific heat capacity norm 0 279 Wh kg C L air temperature in the exhaust stack U air tem...

Page 43: ...ded to measure the surface loss see accessories Before measuring the surface loss it is necessary to enter certain data For that purpose all partial areas of the burner must be considered that do not...

Page 44: ...ce loss qr r radiation The surface loss will be referred to the heat emission and then converted into improve ment potential points according to the DIN EN 15378 national appendix The conversion into...

Page 45: ...air temperature tao should be measured with the same sensor The temperature values measured by the W hler DC 410 FLOW and the Special Wall Temperature Probe are necessary for the determination of the...

Page 46: ...he total volume Vtube can be calculated 1 p p V V act Sample Tube Temp const 3 The Volume Vtube is determined with the following equation in accordance with the principle of the Boyle Mariott s Law Vt...

Page 47: ...equal 100 ml a sy ringe has to be used If the volume exceeds 100 ml a Soot Test Pump will be needed The vol ume of the Soot Test Pump is 163 ml per strike Close the gas line and seal it with a suitab...

Page 48: ...st PT PressureTube Pamb Ambient Pressure 6 9 Graph Record Fig 56 Record screen The graph record mode is used to start a per manent data recording A graph of the records will appear on screen The user...

Page 49: ...to return to the main menu without saving the measured values In this case there will be no tick mark beside the menu Graph logging Press Yes to return to the main menu after saving the measured value...

Page 50: ...D 600 or another printer The menu options in the preview screen are Option ESC left key Click the left key to exit and return to the main menu screen Option center keys click either up or down key to...

Page 51: ...ressure The ambient pressure value of the DC 410 FLOW cannot be changed because the meter is provid ed with an ambient pressure probe Pressure unit Select the pressure unit hPa Pa mmH2O PSI inwc bar o...

Page 52: ...thermal fast printer TD 600 or another printer Print graph Option Yes A graph will be printed with the dia gram Option No No graph will be printed The preselected option is Yes Search by Select betwe...

Page 53: ...defaults Reset the DC 430 FLOW to its factory default setting except the calibration 7 Option Data management When working with the W hler DC 410 FLOW it is possible to save and manage custom ized dat...

Page 54: ...will appear Select New riser to assign a new riser to this client Confirm with OK NOTE The records marked with a tick mark in the main menu are saved now After the records have been successfully saved...

Page 55: ...create new customer folders or new risers in the customer menu see Fig 12 or when saving the data Enter the name a customer num ber and the name of the riser NOTE The user can save all together 128 r...

Page 56: ...all risers Select Delete all customers to delete all customer folders Select USB data exchange to communicate with the PC see chapter 7 3 7 3 Data Transfer with the PC or Notebook The user can easily...

Page 57: ...eries ATTENTION Overpressure high pressure Deflate pressure 9 Maintenance Proper operation of the W hler DC 410 FLOW re quires regular maintenance 9 1 Maintenance work Interval Maintenance work If req...

Page 58: ...d by the warranty are batteries and defects of the pressure sensor caused by overpressure This warranty does not cover the freight and pack ing costs when the device is sent to the factory for repair...

Page 59: ...rement Leakage Test Set Order no 21580 High pressure cone G 1 2 with sealing rings Order no 7213 High pressure cone G 3 8 with sealing rings Order no 7214 Extras Supporting loop with snap hook Order n...

Page 60: ...Pressure Meter model number W hler DC 410 FLOW complies with the following requirements for conformity and electromagnetic compati bility EN 61326 1 1997 A1 1998 A2 2001 DIN EN 61010 1 2002 EN 60529 1...

Page 61: ...61 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com...

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