The Series B3 ROOTS® meter is a positive displacement, rotary type gas meter
designed for continuously measuring and indicating the accurate measurement of
gas. ROOTS® meters are suitable for handling most types of clean, dry, common
gases at either constant or varying flow rates. Meters of standard construction
are not directly suitable for handling acetylene, biogas or sewage gas. Contact the
factory for information on specially constructed meters made of materials more
compatible with these and other gases.
Volumetric accuracy of the ROOTS® meter is permanent, non-adjustable, and
is not affected by low or varying line pressure. Series B3 meters may be used
satisfactorily for pressures ranging from a few ounces to full MAOP. Displaced
volume measurement is completely independent of the gas specific gravity,
temperature, and pressure.
ROOTS® meters are manufactured in accordance with ANSI B109.3 for Rotary
Type Gas Displacement Meters. Series B3 ROOTS® meter sizes 8C through 56M,
have flanged inlet and outlet connections conforming dimensionally with
ANSI/ASME standards. Sizes 8C through 2M are available with 1-1/2” NPT
connections, upon special request.The meter operating temperature range is
from -40°F to +140°F (-40°C to +60°C) while the temperature compensating
mechanism of the TC accessory provides a corrected reading for temperatures
ranging from -20°F to +120°F (-29°C to +49°C).
Series B ROOTS® meters have a Maximum Allowable Operating Pressure
(MAOP) rating of 175 psig (1200kPa). Every meter is static pressure tested
at the factory at twice its MAOP and leak tested at 125 percent of MAOP in
accordance with ASME Boiler Pressure Vessel Codes. Other pressure ratings