Fischer DE38 Pressure Transducer (Used as Flowmeter)

1 General

There are different applications where we use this pressure transducer. On lines with oil heating we use this pressure transducer to measure the oil consumption for the energy monitoring of the line. On lines with steam heating, we use this pressure transducer at the MDO to ensure a constant flow over the heat exchanger. This article describes the set-up for the first application. For the second application, you can find the information in Public:MDO Heating Unit Steam.

2 Adjustment at the Pressure Transducer

• Get the nominal diameter (DN) of the Oil pipe from the site manager (or from the SAP in the Dokument "Rohrleitungschema, Thermaloel, xxxx KOM")

  e.g. For TDO pipe = DN200, for MDO pipe = DN65

• Get now the flow max value (last column) from this table, depending on the diameter DN (2th column)

  Template:Image

  (This table is from a SAP-Dokument 310549)

Zero point calibration

Set parameters EIn, dPF and MEF first!

Otherwise it will affect other parameter settings.

Set parameters according to Excel file, stored @ \\KOM\projects\KOM\_engineering\public\documents\machine_data\XXXX_KOM_checklist_utility_measurements-EEC.xlsx

• Select value for parameter MEF from dropdownmenue (other parameters are being calculated now).

• Set all parameters on the sensor according to the excel sheet.

3 Adjustments in PVSS

All PVSS parameters are also shown in the excel sheet - check/set!

• Set factor(*) to nominal value
• Set the Maximum Alarm value to nominal value.
• Set the Minimum Alarm value to -1% of nominal value.
• Activate the Alarm Minimum and Alarm Maximum!
• Set Warning Minimum according to XXXX_KOM_checklist_utility_measurements-EEC.xlsx (only in use for TDO)

4 Additional Information

4.1 Software factors

The software factors are already set during the software generation. If the customer use a different oil as specified then ask for the specification which type of Thermal oil they are using. Send this information to EMA or Template:EEC-Support and confirm that the E-Specification values are correct. You can find the Specification values in “Project_Types.SCL”.

   //Oil factors 1..n-1 are for the standard oil types,
   //Data comes from HCU ESP SAP Dokument Nr. 451804 V5
   //The last entry can be used for customer specific oil type
   //Mobiltherm 603
   Oil.Fac[1].OILDENFACA := 0.0;
   Oil.Fac[1].OILDENFACB := -0.6644;
   Oil.Fac[1].OILDENFACC := 875.35;
   Oil.Fac[1].OILTMPFACD := 0.0;
   Oil.Fac[1].OILTMPFACE := 3.5103;
   Oil.Fac[1].OILTMPFACF := 1821.6;

   //Mobiltherm 605
   Oil.Fac[2].OILDENFACA := 0.0;
   Oil.Fac[2].OILDENFACB := -0.6498;
   Oil.Fac[2].OILDENFACC := 881.52;
   Oil.Fac[2].OILTMPFACD := 0.0;
   Oil.Fac[2].OILTMPFACE := 3.5626;
   Oil.Fac[2].OILTMPFACF := 1816.7;

   //Marlotherm SH
   Oil.Fac[3].OILDENFACA := 0.0;
   Oil.Fac[3].OILDENFACB := -0.7148;
   Oil.Fac[3].OILDENFACC := 1058.40;
   Oil.Fac[3].OILTMPFACD := 0.0;
   Oil.Fac[3].OILTMPFACE := 3.7623;
   Oil.Fac[3].OILTMPFACF := 1474.5;

and so on