The term ?dissipation loss? are Damaging in the data sheet for a pressure sensor or pressure transmitter. One needs this specification in order to be in a position to protect the pressure sensor from overheating.
If a pressure sensor is operated in a hot environment, it could be necessary to limit its electrical energy. If one neglects this aspect, one possibly risks an overheating sufficient reason for this, in the worst case, a complete failure of the instrument. Just how can the correct electrical connection be managed?
Determination of the correct electrical connection based on the dissipation loss
First, the utmost permissible electrical power for the pressure sensor must be known. This is given in the info sheet because the dissipation loss. Please be aware that the dissipation loss could be dependent upon the utmost expected operating temperature of the instrument and should be calculated where necessary.
If the allowable dissipation loss has been determined correctly, then your actual maximum electrical power for the pressure sensor occurring could be determined. The determination can be carried out expediently in two steps:
1. Incompetent of the voltage at the pressure transmitter using the following formula:
UPressure transmitter = UVoltage source ? RLoad � Imax. Current supply
2. Calculation of the utmost electrical power for the pressure transmitter through the following equation:
PPressure transmitter = UPressure transmitter � Imax. Current supply
The maximum electrical energy for the pressure transmitter (PPressure transmitter), which is now known, should be smaller than the permissible dissipation loss. If this is the case, both the power supply (UVoltage source) and the load (RLoad) were properly calculated and the electrical power of the pressure sensor will undoubtedly be within the permissible range under all operating conditions. Consequently, the pressure transmitter won’t heat too strongly and can withstand the mandatory operating temperatures.
Note
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