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22   OI/266/WIHART-EN | 2600T Series Pressure transmitters
5 Mounting
5.13 Installation recommendations
Impulse piping configuration depends on the specific 
measurement application.
Important. Wireless pressure transmitters are equipped with 
antenna and extended rear cover. The following installation 
sketches are shown for convenience only. Please consider the 
antenna and the battery seat while planning installation schemes.
5.13.1 Steam (condensable vapor) or clean liquids flow 
measurement
  — Place taps to the side of the line.
  — Mount beside or below the taps.
  — Mount the drain/vent valve upward.
  — In case of steam application fill the vertical section of the   
    connecting lines with a compatible fluid through the filling  
   tees.
The process fluid must enter the transmitter primary:
  1. Open equalizing valve (C)
  2. Close low pressure (B) and high pressure (A) valves .
  3. Open gate valves 
  4. Slowly open high pressure (A) valve to admit process fluid  
    to both sides of primary.
  5. Vent or drain the primary unit and then close the valves.
  6. Open the (B) valve and close the equalizing valve.
Figure 22: Steam or clean liquid flow measurement 
(transmitter and manifold)
Figure 23: Gas or liquid flow measurement (transmitter and manifold)
5.13.2 Gas or liquid (with solids in suspension) flow 
measurement
  — Place the taps to the top or side of the line.
  — Mount the transmitter above the taps.
The process fluid must enter the transmitter primary:
  1. Open equalizing valve (C)
  2. Close low pressure (B) and high pressure (A) valves .
  3. Open gate valves 
  4. Slowly open high pressure (A) valve to admit process fluid  
    to both sides of primary.
  5. Vent or drain the primary unit and then close the valves.
  6. Open the (B) valve and close the equalizing valve.
Caution. 
Manifolds can be supplied both mounted on pressure 
transmitters and loose. In case of integral mounting, consider that:
—  All adjustments should be carried out by qualified personnel with  
    the valve without pressure.
—  End connections must not be removed from the body.
—  Do not use handle wrenches or extensions to operate the  
    valves.
—  Head units must not be removed once installed.
—  Do not cover or remove body marking.
Important. The maximum working temperature of the whole 
assembly (manifold and instrument) corresponds to the temperature 
limit of the pressure transmitter.
Important. When the manifold is assembled to a 2600T pressure 
transmitter with NACE compliance A4-50 Stainless Steel bolts 
(available on request), please note that the maximum working 
pressure is limited to 210 bar (3045 psi).