Structure - Siemens SITRANS P DS III Operating Instructions Manual

Description

3.3 Structure

Level
This version with mounting flange measures the level of non-corrosive, corrosive and toxic
liquids in open and closed containers. The smallest measuring range is 250 mbar (3.63 psi),
the largest is 5 bar (72.5 psi). The nominal diameter of the mounting flange is DN 80 or DN
100, or 3" or 4".
For the level measurement on open containers, the low-pressure side of the measuring cell
remains open. This measurement is referred to as "Measurement against atmospheric
pressure". For the measurement on closed containers, the low-pressure side is usually
connected to the container. This balances out the static pressure.
The parts wetted by the medium are made of various materials according to the corrosion
resistance required.
3.3 Structure
Depending on a customer-specific order, the device comprises different parts.
①
Key cover
②
Cover (front), optionally with inspection window
③
Display (optional)
④
Measuring point label
⑤
Retaining screw; twist proofing of the measuring cell
in relation to the electronics enclosure
⑥
Process connection
⑦
Nameplate (general information)
Figure 3-2 View of the transmitter: Left: Front right: Rear view
● The electronics enclosure is made of die cast aluminum or precision cast stainless steel.
● The housing has a removable circular cover at the front and the back.
24
⑧
Cable inlet, optionally with cable gland
⑨
Cover (rear) for electrical terminal compartment
⑩
Electrical terminal compartment
⑪
Protective conductor connector/equipotential
bonding terminal
⑫
Nameplate (approval information)
⑬
Blanking plug
Operating Instructions, 06/2013, A5E00053276-07
SITRANS P DS III with PROFIBUS PA