What’s the dissipation loss for a pressure transmitter?

The term ?dissipation loss? are available in the info sheet for a pressure sensor or pressure transmitter. One needs this specification in order to be able to protect the pressure sensor from overheating.
If a pressure sensor is operated in a hot environment, it usually is essential to limit its electrical energy. If one neglects this aspect, one possibly risks an overheating and with this, in the worst case, a complete failure of the instrument. Just how can the right electrical connection be managed?
Determination of the right electrical connection on the basis of the dissipation loss
First, the maximum permissible electrical energy for the pressure sensor must be known. Refugee is given in the info sheet as the dissipation loss. Please note that the dissipation loss can be dependent upon the maximum expected operating temperature of the instrument and should be calculated where necessary.
If the allowable dissipation loss has been determined correctly, then the actual maximum electrical power for the pressure sensor that occurs can be determined. The determination can be executed expediently in two steps:
1. Determination of the voltage at the pressure transmitter utilizing the following formula:
UPressure transmitter = UVoltage source ? RLoad � Imax. Current supply
2. Calculation of the maximum 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, must be smaller compared to the permissible dissipation loss. If Great is the case, both the power (UVoltage source) and the load (RLoad) were properly calculated and the electrical energy of the pressure sensor will be within the permissible range under all operating conditions. Consequently, the pressure transmitter won’t heat too strongly and will withstand the required operating temperatures.
Note
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