Example:
A flow velocity of 3 m/s (10 ft./sec.) (V) in a sensor with a diameter reduction from DN 100 to
DN 80 (4" to 3") (d
1
/d
2
= 0.8) gives a pressure drop of 2.9 mbar (0.04 psi).
4.1.3 Mounting the sensor
1. Install gaskets.
2. Ensure connection flange has a smooth surface and is in line with sensor.
Gaskets are recommended but not included in water meter delivery.
Advice for gasket selection:
● Only use flat rubber gaskets.
● Thickness 1 to 6 mm (0.0 to 0.02 ft) dependent on gap/tolerance.
● Inner diameter must be larger than bore of water meter.
● Material should be compatible with process fluid.
● Hardness should be maximum 75 Shore A.
Maximum allowable torques
Standard bolts must be well lubricated and tightened evenly around gasket.
Leakage/damage to water meter or piping may arise if bolts are overtightened.
Torque calculations
Installing/Mounting
4.1 Sensor installation
SITRANS MAG 8000
22 Operating Instructions, 11/2018, A5E03071515-AE
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