HydrINS 2 / HydrINS 2 Mini flow meter
User Manual
Page 25 / 79
5.1.1
Step 1/3: Measuring the inside diameter DI using the gauge
Tighten the diameter gauge,
taking care to align the handle
with the pipe axis.
1. Open the insert valve and lower
the gauge until it stops against the
bottom of the pipe.
2. Lower the two identification
rings onto the gauge watertight
fitting.
3. Lock Ring A in this position using
the knurled screw.
1. Rotate the gauge through 180°.
2. Bring the gauge back up until it stops against
the upper surface of the pipe.
3. Position Ring B where it stops against the
watertight fitting of the gauge. Secure Ring B in
this position using the knurled screw
Measure the inside diameter
DI between the external faces
of the two rings.
It might not be possible to measure the DI (lack of space in the port or diameter too large). In that case, replace the DI value with an
estimate (e.g., manufacturer data).
DI
L
2
1
3
1
2
3
Ring A
Ring B
Freely
rotating
ring
Immobilised
ring