Neptune HP PROTECTUS III, Installation And Maintenance Manual

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Adjusting the Calibration Vane
Neptune equips all new turbine meters and UMEs with a calibration vane. If field calibration
of the turbine element is required, complete the following steps.
1. Remove the seal pin from the register and twist off the register.
2. Turn the lock nut on the adjusting stem counter-clockwise to loosen it.
3. Insert the slotted screwdriver into the slot in top of adjusting stem and turn it toward the :
l
Plus sign (+) to increase the registration.
l
Minus sign (-) to decrease the registration.
Figure 5 – Calibration Vane
Turning the adjustment stem 15 degrees in either direction results in approximately one
percent change in registration. The full range of the calibration vane is 180 degrees.
12 HP PROTECTUS
®
III Installation and Maintenance Guide
Chapter 3: Installing the HP PROTECTUS
®
III