Baseline Systems BHM Series Hydrometer - Manual (Page 13)

Hydrometers Operation and Maintenance Manual •
13
Installation
A. Installation Requirements
• Globe configuration hydrometers
require no straight pipe installation
requirements. Do not install valves
that will cause a restriction directly
upstream or downstream of the
hydrometer.
• Connections to the hydrometer
should be the same size as the meter.
Example: if a 3” hydrometer is
installed, 3” pipe and fittings should
be connected to the hydrometer.
• Prior to installation of the meter, the
pipeline should be thoroughly flushed.
• Recommendation: Air Vents of proper size and type, Continuous
acting and large acting, be installed to eliminate air.
B. Unpacking
The hydrometer comes fully assembled according to the customer’s specifications. The 1½” model
is shipped with the appropriate couplings and gaskets. For larger diameter models installation
hardware is not included for larger diameter models. Pilot valves and other accessories are factory
installed and calibrated according to the customer’s specifications.
C. Pipeline Installation
The following tools are required to perform these procedures:
• Flat blade and Phillips head screwdrivers in various sizes
• Open end or box wrenches in various sizes
• Large pipe wrenches
• Pliers
• Dies or pipe threading tools compatible with the pipeline diameter
• Teflon tape or similar pipe sealing material
D. Preliminary Steps
1. Before beginning the installation, the line should be thoroughly flushed to remove any
foreign matter.
2. Close the inlet valve in order to shut off the water flow to the pipeline.
E. Installing 1½” and 2” Models
The 2” hydrometer can be attached directly to a male threaded pipeline or to a female threaded
pipeline using a coupling. The 1½” model can only be attached using a coupling.
Coupling Connection
• Create a female threaded connection on both pipe sections.
• Apply Teflon tape or similar material to seal the connections.
• Insert the male coupling connections into the pipeline sections and tighten securely.
• Place a coupling gasket over each male threaded hydrometer connection and
securely tighten the coupling nuts.
Direct Connection
• Create a male threaded connection on both pipe sections that are to be attached.
• Apply Teflon tape or similar material to seal the connections.
• Insert the male threaded pipe connection into the hydrometer and tighten securely.
F. Installing 3” – 8” Models
The end user is expected to supply the appropriate gaskets
and bolts according to the diameter of the pipeline.
• Place the appropriate gasket onto each flange.
• Insert the bolts, nuts and washers and tighten securely.
Size
Upstream
Distance
Downstream
Distance
Globe Configuration
Straight Pipe Installation Requirement
0 x D and 0 x D
Meter
Length
Total
Requirement
1 ½” 0” 0” 6 5 / 16 ” 6 5 / 16 ”
2” 0” 0” 8 5 / 8 ” 8 5 / 8 ”
3” 0” 0” 11 1 / 2 ” 11 1 / 2 ”
4” 0“ 0” 14 1 / 8 “ 14 1 / 8 “
6” 0“ 0” 19 1 / 2 “ 19 1 / 2 “
8” 0” 0” 23 5 / 8 “ 23 5 / 8 “