Proline Promag W 800
24 Endress+Hauser
Adapters Suitable adapters to DIN EN 545 (double-flange reducers) can be used to install the sensor in larger-diameter
pipes.
The resultant increase in the rate of flow improves measuring accuracy with very slow-moving fluids. The
nomogram shown here can be used to calculate the pressure loss caused by reducers and expanders.
The nomogram only applies to liquids of viscosity similar to water.
Determining the pressure loss:
1. Calculate the ratio of the diameters d/D.
2. From the nomogram read off the pressure loss as a function of flow velocity (downstream from the
reduction) and the d/D ratio.
A0016359
Pressure loss due to adapters
Length of connecting cable The maximum connecting cable length is 20 m (35.6 ft).
When mounting the remote version, please note the following to achieve correct measuring results:
• Fix the cable run or route it in an armored conduit. Cable movements can falsify the measuring signal
especially in the case of low fluid conductivities.
• Route the cable well clear of electrical machines and switching elements.
• Ensure potential equalization between sensor and transmitter, if necessary.
Special installation Display protection
To ensure that the optional display protection can be easily opened, maintain the following minimum head
clearance: 350 mm (13.8 in)
100
10
0.5
d / D
[mbar]
0.6 0.7 0.8 0.9
1 m/s
2 m/s
3 m/s
4 m/s
5 m/s
6 m/s
7 m/s
8 m/s
1
D
d
max. 8°
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