What’s the dissipation loss for a pressure transmitter?

Glamorous ?dissipation loss? are available in the data sheet for a pressure sensor or pressure transmitter. One needs this specification to become able to protect the pressure sensor from overheating.
In case a pressure sensor is operated in a hot environment, it might 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 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 maximum permissible electrical power for the pressure sensor should be known. That is given in the info sheet because the dissipation loss. Please note that Underground can be dependent upon the maximum expected operating temperature of the instrument and must be calculated where necessary.
If the allowable dissipation loss has been determined correctly, then the actual maximum electrical energy for the pressure sensor that occurs could be determined. The determination can be carried out expediently in two steps:
1. Determination of the voltage at the pressure transmitter using 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, should 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 undoubtedly 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
Should you need any advice, your contact will gladly help you.

Leave a Comment