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Kobold KEP-2 Operating Instructions Manual

Thermal mass flow meter for gas
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Operating Instructions
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Thermal Mass Flow Meter for Gas
Model: KEP-2

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Summary of Contents for Kobold KEP-2

  • Page 1 Operating Instructions Thermal Mass Flow Meter for Gas Model: KEP-2...

  • Page 2: Table Of Contents

    Installation ..................... 8     Pipe/tube requirements ................ 8     Inlet/outlet runs ..................8     Installation of KEP-2 ................9     Display Head Position ................9     Flow measuring ranges ................10     Flow for different gases..............10  ...
  • Page 3 KEP-2 Manufactured and sold by: Kobold Messring GmbH Nordring 22-24 D-65719 Hofheim Tel.: +49(0)6192-2990 Fax: +49(0)6192-23398 E-Mail: info.de@kobold.com Internet: www.kobold.com KEP-2 K01/0124 page 3...

  • Page 4: Note

    Please read these operating instructions before unpacking and putting the unit into operation. Follow the instructions precisely as described herein. The instruction manuals on our website www.kobold.com are always for currently manufactured version of our products. Due to technical changes, the instruction manuals available online may not always correspond to the product version you have purchased.

  • Page 5: Regulation Use

    We offer you to take back the instruments of the instrument’s family KEP-2 which you would like to dispose of. The installation has to be carried out by authorized professionals.

  • Page 6: Operation

    The area outside the pipeline (ambient area of the sensor) must not be an explosive area. 6. Operation The KEP-2 is a compact consumption counter for compressed air and gases. Special features: Optimum accuracy due to compact design Integrated Display showing Flow, consumption, velocity and temperature Input inner tube diameter via display keys Units free selectable.

  • Page 7: Scaling Analogue Output Compressed Air

    4…20 mA = 0...290 m³/h High Speed 0...355 m³/h Low Speed 0...140 m³/h Standard 0...265 m³/h 4…20 mA = KEP-2 with integrated 1 1/4" meas. section 0...530 m³/h High Speed 0...640 m³/h Low Speed 0...195 m³/h Standard 0...365 m³/h 4…20 mA = KEP-2 with integrated 1 1/2"...

  • Page 8: Installation

    15 x D 5 x D 15 x D 5 x D 15 x D 5 x D 20 x D 5 x D 45 x D 5 x D 35 x D 5 x D page 8 KEP-2 K01/0124...

  • Page 9: Installation Of Kep-2

    An installation at customer site is only allowed in the unpressurized state  of the system It has to be checked whether the KEP-2 is correctly installed in the  measuring section, the flow direction arrows must point in the same direction.

  • Page 10: Flow Measuring Ranges

    3280 Low Speed 220** Nitrous oxide Standard 1005 1395 (N2O) 1170 2010 2785 High Speed 1420 2435 3375 Low Speed 130** Natural gas Standard 245** (NG) 1210 1680 High Speed 1465 2035 Other gases on request page 10 KEP-2 K01/0124...
  • Page 11 DVGW admission, however, it can be used for measurements in natural gas. A DVGW admission is not mandatory. The area outside the pipeline (ambient area of the sensor) must not be an explosive area. KEP-2 K01/0124 page 11...

  • Page 12: Electrical Wiring

    MBus (reverse polarity protected) If no connection cable/ pulse cable is ordered the sensor will be supplied with a M12 connector plug. The user can connect the supply and signal cables as indicated in the connection diagram. page 12 KEP-2 K01/0124...

  • Page 13: Operation

    Alternatively, a 120R resistor can be installed in the plug between pin 2 and pin 4. 11. Operation Remark: Only for version with display The operation of the KEP-2 is done by the two capacitive key buttons Up () und  Enter ( KEP-2 K01/0124...

  • Page 14: Initialization

    KEP-2 11.1 Initialization After switching on the KEP-2, the initialized screen is displayed followed by the main menu. 11.2 Main menu Switching to pages 2-4 or back by pressing key „“ AV-Time (Period for average value calculation) could be changed under Sensor Setup.-Advanced–...

  • Page 15: Settings

    KEP-2 11.3 Settings The settings menu could accessed by pressing the key „OK“. But the access to the settings menu is password protected. 11.3.1 Sensor Setup Setup → Sensor Setup KEP-2 K01/0124 page 15...
  • Page 16 KEP-2 11.3.1.1 Input / change tube diameter Settings→ Sensor Setup→ Diameter For KEP-2 not adjustable (suspended) as voted on included measuring section with corresponding pipe diameter. 11.3.1.2 Input / change consumption counter Setup → Sensor Setup→ Total Counter → Unit button Important! When the counter reach 100000000 m³...
  • Page 17  Do not enter the operation pressure or the operation temperature under reference conditions! Setup → Sensor Setup→ Advanced Setup → Sensor Setup → Advanced → Ref.Pref Setup → Sensor Setup→ Advanced →Ref.Temp KEP-2 K01/0124 page 17...
  • Page 18 KEP-2 Setup → Sensor Setup→ Advanced → Filtertime Setup → Sensor Setup→ Advanced → AV-Time 11.3.1.5 Setting of Zeropoint and Low-flow cut off Setup → Sensor Setup→ ZP Adjust page 18 KEP-2 K01/0124...
  • Page 19 KEP-2 Setup → Sensor Setup → ZP Adjust → ZeroPnt Setup → Sensor Setup → ZP Adjust →CutOff Setup → Sensor Setup → ZP Adjust t → Reset KEP-2 K01/0124 page 19...
  • Page 20 11.3.2 Modbus Settings 11.3.2.1 Modbus RTU Setup The Flow sensors KEP-2 comes with a Modbus RTU Interface. Before commissioning the sensor, the communication parameters  Modbus ID, Baudrate, Parity und Stop bit must be set in order to ensure the communication with the Modbus master.
  • Page 21 1 = even 2 = odd   0 = 1 Stop Bit 2004 2003 UInt16 Number of Stopbits 1 = 2 Stop Bit 0xABCD = Big Endian 2005 2004 UInt16 Word Order 0xABCD 0xCDAB = Middle Endian KEP-2 K01/0124 page 21...
  • Page 22 Flow in cfm 1181 1180 Float Flow in Ncfm 1189 1188 Float Flow in kg/h 1197 1196 Float Flow in kg/min 1205 1204 Float Flow in kg/s 1213 1212 Float Flow in kW 1221 1220 Float page 22 KEP-2 K01/0124...
  • Page 23 GasTemp °C 1419 1418 Float       GasTemp °F 1427 1426 Float Remark: For more additional Modbus values please refer to separate Operating Instructions Modbus Installation and Operating Instructions for the sensors KEP-1 and KEP-2. KEP-2 K01/0124 page 23...
  • Page 24 1 m³ / Pulse 180000 3000 3000000 Table 1 Maximum flow for pulse output Entering pulse values that are not allow a presentation to the full scale value, are not allowed. Entries are discarded and error message displayed. page 24 KEP-2 K01/0124...
  • Page 25 KEP-2 11.3.4 User Setup. 11.3.4.1 Password Settings → User Setup. → Password 11.3.4.2 Language Settings → User Setup. → Language KEP-2 K01/0124 page 25...
  • Page 26 KEP-2 11.3.4.3 Display/Touch Settings → User Setup. → Display / Touch 11.3.5 Advanced Settings → Advanced 11.3.6 4 -20 mA Settings → 4-20mA page 26 KEP-2 K01/0124...
  • Page 27 KEP-2 Settings →4-20mA → Channel 1 KEP-2 K01/0124 page 27...
  • Page 28 KEP-2 Settings → 4-20mA → Channel 1 → AutoRange Settings → 4 -20mA → Error Current page 28 KEP-2 K01/0124...

  • Page 29: Status/Error Messages

    12. Status/Error messages 12.1 Status messages  On the part of Kobold Messring, a regular re-calibration is recommended, see chapter 15. At delivery, the date at which the next recalibration is recommended is internally entered. When this date is reached, a message appears in the display with the status message „CAL“.

  • Page 30: Error Messages

    Low Voltage 4-20 mA  For sensors with a galvanically isolated 4-20 mA output, a min. Supply voltage of 17.5 V is required. If this value is undershot, the error message „Low Voltage 4- 20 mA“ is displayed. page 30 KEP-2 K01/0124...

  • Page 31: Maintenance

    The sensor head can be cleaned by carefully moving it back and forth in warm water with a small amount of washing-up liquid. Avoid physical intervention on the sensor (e.g. using a sponge or brush). If soiling cannot be removed, the manufacturer must carry out service and maintenance. KEP-2 K01/0124 page 31...

  • Page 32: Re-Calibration

    The calibration intervals should comply with your internal specification. According to DIN ISO we recommend a calibration interval of one year for the instrument KEP-2. On request and additional payment, calibration-certificates could be issued. The precision is given due to use DKD-certified flow meters and verifiable 18.

  • Page 33: Technical Information

    KEP-2 The warranty time for the KEP-2 is 12 months. If no other definitions are given the accessory parts have a warranty time of 6 months. Warranty services do not extend the warranty time. If in addition to the warranty service necessary repairs, adjustments or similar are carried out the warranty services are free of charge but there is a charge for other services such as transport and packaging costs.

  • Page 34: Disposal

    (Cd, Hg, Li or Pb) of the heavy metal that is decisive for the classification as containing pollutants: 1. „Cd" stands for cadmium 2. „Hg" stands for mercury 3. „Pb" stands for lead 4. „Li" stands for lithium Electrical and electronic equipment page 34 KEP-2 K01/0124...

  • Page 35: Eu Declaration Of Conformance

    KEP-2 23. EU Declaration of Conformance We, KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Germany, declare under our sole responsibility that the product: Thermal Mass Flow Meter for Gas model: KEP-2 to which this declaration relates is in conformity with the following EU directives...

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