Siemens SITRANS 7MF03.0 - Functional Principle; Overview of Mode of Operation

Nameplate with information on the remote seals
The nameplate with information on the remote seals is located on the back of the enclosure.
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① Diaphragm remote seals of sandwich type ⑦ Nominal diameter/nominal pressure: 4 inch, 50
mm tube length, CLASS 600
② Article number (MLFB number) ⑧ Filling liquid: Food grade oil (FDA-compliant)
③ Order options ⑨ Wetted materials: Diaphragm duplex, 1.4462
④ Serial number ⑩ QR code for mobile website with device-specific
information
⑤ Operating temperature ⑪ Assembly and manufacturing location
⑥ Vacuum service: No, oxygen ≤ 60 °C;
≤ 50 bar
Figure 4-5 Example
4.4 Functional principle
4.4.1 Overview of mode of operation
This chapter describes how the pressure transmitter works.
First the electronics are described, and then the physical principle of the sensors which are
used with the various device versions for the individual measurement types.
Description
4.4 Functional principle
SITRANS P320/P420 (mA/HART)
28 Operating Instructions, 06/2018, A5E44852162-AA