What is the dissipation loss for a pressure transmitter?

The term ?dissipation loss? can be found in the info sheet for a pressure sensor or pressure transmitter. One needs this specification to become in a position to protect the pressure sensor from overheating.
If a pressure sensor is operated in a hot environment, it could be essential to limit its electrical power. If one neglects this aspect, one possibly risks an overheating and with this, in the worst case, a total failure of the instrument. So how can the correct electrical connection be managed?
Determination of the correct electrical connection on the basis of the dissipation loss
First, the utmost permissible electrical power for the pressure sensor must be known. That is given in the info sheet because the dissipation loss. Please note that the dissipation loss can 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 energy for the pressure sensor that occurs can be determined. The determination can be carried out expediently in two steps:
1. Interesting of the voltage at the pressure transmitter utilizing 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 power for the pressure transmitter (PPressure transmitter), that is now known, must be smaller than the permissible dissipation loss. If this is the case, both the power supply (UVoltage source) and the strain (RLoad) were properly calculated and the electrical power of the pressure sensor will 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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