t. 1 mbar
t. 0,1 %FS

Intrinsically Safe Piezoresistive Pressure Tranitters
Series 23 (S)Y Ei / 25 Y Ei / 26 Y Ei

For gas and dust atmospheres

These piezoresistive pressure tranitters are approved for use in highly explosion risk areas of group II (gas and dust).

The Y-line tranitters have an extremely all temperature error. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields that are 1,5 Kelvin (K) wide. The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the ogue signal path depending on the temperature. Each temperature is the „calibration temperature” for this tranitter. The accuracy thereof is mainly determined by linearity. 120 fields are available, representing a possible temperature range of 180 K. The wider the temperature range, the greater the amount of testing that is needed to minimise the inaccuracy of the mathematical model.

Note:
The Series 23 (S) Ei, Series 25 (S) Ei, 26 Ei have been replaced by this Series.
The data sheet on the Series 23 (S) Ei, Series 25 (S) Ei, 26 Ei is yet available under:
Data Sheet Series 23 (S) Ei, Series 25 (S) Ei, 26 Ei

The Series 46 X combines the ceramic measuring cell for low pressure ranges with the µP-electronics of the dial Series 30 pressure tranitters. The signal values of the pressure- and temperature sensors are determined by a polynomial compensation. The values can be shown and stored on a PC and can be reprogrammed. A reference tube integrated in the cable connects the referential chamber of the sensor with the ambient pressure.

This pressure tranitter is also available as intrinsically safe version (Series 46 X Ei). It is used in explosion exposed areas, where the categories 1 and 2 are required.

Note:
The Series 46 W have been replaced by the Series 46 X (Ei).
The data sheet on the 46 W is yet available under:Data Sheet Series 46 W