12 SOI/266-XC
| 2600T Series Pressure transmitters 266 models
Min.
Max
Level measurement
1. Vent all entrapped air from primary using vent/drain valves on the transmitter, then close them.
2. Make sure to have the level in the tank at the required reference (minimum) level.
3. In case of wet leg make sure to have it completely filled-in with the proper liquid.
4. After venting, output should be 4mA dc. If not carry out the procedure explained in "HOW TO SET THE ZERO".
POSSIBLE INSTALLATIONS
Flow measurement (only with DP style transmitter)
Fig. 8 Gas Flow measurement
Fig. 9 Liquid Flow measurement
Fig. 11 Level measurement with DP transmitter
Fig. 10 Level measurement with G/A transmitter
3-valve manifold
Flow
Flow
Orifice plate
Gate
valves
3-valve manifold
Filling
tee
Pressure and absolute pressure measurements
1. In case of condensable vapor make sure to have the wet leg
completely filled with the condensed liquid. Slowly open the
gate valve to admit process fluid to primary of side H.
2. Vent all entrapped air (liquid service) or drain any condensate
(gas service) from primary using the vent/drain screw.
3. Close the gate valve.
4. The output should be 4 mA dc. If not carry out the procedure
explained in "HOW TO SET THE ZERO".
Fig. 12 Pressure and absolute pressure measurement
with DP transmitter
Fig. 13 Pressure and absolute pressure measurement
with G/A transmitter
Gate
valve
H
1. The process fluid must enter the transmitter primary:
a. Close low pressure (B) and high pressure (A) valves .
b. Open gate valves and equalizing (C) valve.
c. Slowly open high pressure (A) valve to admit process fluid to both sides of primary.
2. Vent or drain the primary unit and then close the valves.
Gate
valve
Condensate trap
(optional)
Drain
valve
Max
Min.
Note
Re-zeroing an absolute pressure transmitter should only be per-
formed by connecting it to a reference vacuum pressure generator
5. Close any open filling tee or drain valve.
6. Open the gate valve.
