Brooks Instrument BM02 - Manual (Page 7)

1-1
Introduction
Brooks ® Models BM01 and BM02
Installation and Operation Manual
X-PD-BM01-02-eng
Part Number: 541B042AHG
March, 2008
1-1 Scope
The Brooks ® BM Series Flowmeters, hereafter called flowmeters, are
positive displacement meters that maesure extremely low flows of clean
liquid with high accuracy. The flowmeter generates an electrical signal
proportional to flow for use with a wide variety of electronic instruments.
1-2 Description
The flowmeters have incorporated the oval rotor principle into its design.
This has proven to be a reliable and highly accurate method of measuring
flow. Exceptional repeatability and high accuracy over a wide range of
viscosities and flow rates are features of the flowmeters.
The low pressure drop and high pressure rating means the flowmeters
are suitable for both gravity and pump (in line) applications.
1-3 Specifications
Capacities
Performance
Accuracy: +/- 1%
Repeatability: 0.03%
Typical meter performance and pressure drop: Figure 1-1.
Ratings
Maximum working pressure:
PPS body: 75 PSIG (500 KPAG)
316 SS body: 150 PSIG (1000 KPAG)
Consult factory for higher pressure options.
Maximum working temperature:
PPS body and/or Rotors (Gears): 176° F (80° C).
316 SS body and Rotors (Gears): 248° F (120° C).
Ambient Temperature: -4° F to 104° F (-20° C to +40° C).
Viscosity BM01 BM02
.3 to 8cP 1.32 to 26 gph 6 to 132 gph
(5 to 100 lph) (25 to 500 lph)
5 to 1,000cP 0.53 to 26 gph 4 to 132 gph
(2 to 100 lph) (15 to 500 lph)