4.8.3 Installing HMP378 with ball valve kit BALLVALVE-1
Figure 31 Inserting HMP378 into process with ball valve kit
1
Manual press tool: use to press the probe down when installing in higher pressure.
2 Fitting screw of the probe: attaches the probe to the top of the ball valve.
3 Push the probe deep enough to insert the probe filter completely inside the process.
4 The groove on the probe indicates the adjustment limit when pulling the probe up. Pull the
probe up until the groove is visible before closing the ball valve.
5 Ball of the ball valve in closed position.
The ball valve installation kit (Vaisala item code: BALLVALVE-1) is preferred when connecting
the probe to a pressurized process or pipeline. Use the ball valve set or a 1/2" ball valve
assembly with a ball hole of ø14 mm or more. If you install the probe (ø12 mm) in a process
pipe, please note that the nominal size of the pipe must be at least 1 inch (2.54 cm). Use the
manual press handle to press the probe into the pressurized (< 10 bar) process or pipeline.
Chapter 4 – Probe options
77
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