User Manual

INTRODUCTION
The Blancett Model 900 positive displacement flow meter provides the petrochemical industry with an economically priced,
high pressure flow meter for low viscosity liquids. The Model 900 was designed for water flood and oil field service, but can
be used wherever totalization is necessary. The meter is designed with wear resistant parts to provide trouble-free operation
and long service life. The meter housing is made from stainless steel. Internal parts are constructed of stainless alloys and high
strength engineering polymers to provide good chemical and abrasion resistance. Maintenance kits are available to allow
quick and easy in-line repair.
OPERATING PRINCIPLE
The liquid enters the measuring chamber through a precision inlet insert and separates into two equal streams. The streams
cause the impeller assembly to rotate at a rate directly proportional to the flow rate. Both liquid streams are then combined at
the meter outlet.
FLUID
FLOW
(IN)
(OUT)
Figure 1: Operating principle
SPECIFICATIONS
Flow Range
Low Range 68…172 bpd (2…5 gpm)
Mid Range 172…1543 bpd (5…45 gpm)
High Range 1543…3086 bpd (45…90 gpm)
Materials of Construction
Body Stainless steel body
Internal Components Stainless steel alloys and high tech polymers for high chemical/abrasion resistance
Connections 1 in. NPT female and 2 in. NPT male
Operating Limitations
Temperature:
30…200° F (–1…93° C)
Not to be used on temperatures below the freezing point of liquid being measured.
Pressure: 5,000 psi maximum
Accuracy: ±2.0% of reading
Repeatability: ±0.1%
Corrosion:
Contact Blancett at (800)-235-1638 to determine if operating liquid is compatible with
materials of construction. Incompatible fluids could deteriorate internal parts and cause the
meter to read inaccurately.
Pulsation and Vibration: Severe pulsation and mechanical vibration affect accuracy and shorten the meters life.
Filtration:
A strainer capable of removing particles 0.020 in. (0.50 mm) should be installed upstream
of the meter.
User Manual
Page 5 September 2013