ABB WICB Benutzerhandbuch

2600T Series Pressure transmitters | OI/266/WIHART-EN   23

5 Mounting

5.13.3 Liquid level measurements on closed tanks and 
non condensable fluids (dry leg)

  — Mount the transmitter at the same height or below the    
    lowest level to be measured.

  — Connect the + (H) side of the transmitter to the bottom of  
    the tank.

  — Connect the - (L) side of the transmitter to the upper part  
    of the tank, above the maximum level of the tank.

5.13.4 Liquid level measurement with closed tanks and 
condensable fluids (wet leg)

 — 

Mount the transmitter at the same height or below the    

    lowest level to be measured.

 — 

Connect the + (H) side of the transmitter to the bottom of  

    the tank.

 — 

Connect the - (L) side of the transmitter to the upper part  

    of the tank.

 — 

Fill the vertical section of the connecting line to the upper  

    part of the tank with a compatible liquid through the  

 

    dedicated filling tee.

Figure 24: Level measurement on closed tank with dry leg

Figure 25: Level measurement on closed tank with wet leg

5.13.5 Liquid level measurement with open tanks

  — Mount the transmitter at the same height or below the    
    lowest level to be measured.

  — Connect the + (H) side to the bottom of the tank.

 — 

Vent the “–” (L) side of the transmitter to the atmosphere  

    (in this case a gauge pressure is shown; the (L) side is    
    already vented to the atmosphere).

Figure 26: Level measurement on open tank with P style transmitter