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RCM Flow Meter Available Options

OPTIONS A & B: O-Ring Seals OPTION N: Ammonia Service
O-Rings are used to seal internal flanged joints.  Standard O-Ring material is Buna-N which is suitable for a wide range of liquids and gases.  If no option is specified, Buna-N will be furnished.  If Buna-N is not satisfactory, then Viton or EPR seals may be suitable.  See our Recommended Meter Materials Page for material ratings.  Please consult with us if an appropriate seal material is not shown.  E.I. dupont

This option includes a brass free construction throughout, EPR seals, a stainless steel gear movement and gasketed case.  Price includes calibration to specific gravity, pressure and temperature compensation.  This option is available for model 73 ONLY !


OPTION C: Calibration for Specific Gravity OPTION P: Panel Mount
All Series 7000 Flo-Gages are normally calibrated for water with a specific gravity of 1.0 (density of 62.4 lbs./ft³).  If fluids of different density are to be metered, the meter will require either a correction factor or calibration for the desired specific gravity. This option provides a special meter case for mounting on panels.  This option is available on 1-1/2" and smaller meters only.
OPTION D: Gasketed Meter Housing OPTION R: Digital Readout/Totalizer
Standard meter housing protects the meter mechanism against normal dirt and dust.  If the meter is to be exposed to the weather, marine service, splashing liquids, corrosive vapors, or extreme humidity or dusty conditions, then a gasketed meter housing is recommended.  Gaskets of neoprene sponge are installed at the body flange, back cover plate and under the dial crystal to make the housing leak-tight. A loop power (4-20mA dc) two-wire indicator displays 4-1/2 digits for flow rate and 8 digits for totalization.  Includes scaled, open collector output for remote totalizer.  Includes square root extraction.  Replaces the standard dial indicator.  Requires our option W3. Visit Product Page
OPTION E: Non-Standard  Flow Rates OPTION R2: Remote Readout
Various full-Scale flow rates are available for each pipe size as indicated in the chart of "Standard Flow Rates and Body Sizes".  These standard flow rates meet nearly all industrial applications and comply with good engineering practice in piping design.  However, if smaller flow ranges are necessary, special orifices can be furnished.  Consult with us if this is a desired option !

Adapters and 3-way equalizing valve (Bronze) provide extended temperature ranges or remote mount for more convenient viewing.  See here to view picture of Remote Reading Flowmeter


OPTION ES: Low Flow Rates OPTION R3: Remote Readout
A low flow meter is available with ½" female NPT connections for measuring the flow of liquids as low as 1 GPH and gases as low as 10 SCFH.  A minimum inlet pressure of 10 psi is required for liquids and gases.  Accuracy is ±5% of full scale.

Adapters and 3-way equalizing valve (316SS) provide extended temperature ranges or remote mount for more convenient viewing.  See here to view picture of Remote Reading Flowmeter

Option G: Custom Scales and Dials OPTION T: Expanded Temperature Range
Non-standard flow rates and custom dial patterns require preparation of special artwork and stencils.  A one time charge is made for each custom dial pattern or non-standard scale. Materials suitable for a range of 80F to 350F are provided.  Higher temperatures available in combination with Option R2
OPTION H: 400 psig Service OPTION V: Calabrate for High Viscosity Liquids
Standard meters are equipped with bellows which have a service rating of 180 psig maximum.  High strength bellows made of Inconel 718 are available with service ratings to 400 psig and may be used where service conditions permit use of stainless steel.  A slight increase in pressure drop across the meter results when these bellows are used.   International Nickel Co.

Liquids having high viscosities cause flow meters to read high; however, this effect is slight for liquids having viscosities less than 5 centipoises.  Heavy lubricating and fuel oils with viscosities up to 500 cps require special sizing of the flow meter orifice.  Flo Gages are not recommended for metering of fluids with viscosities greater than 500 centipoises.  Consult with us for specific recommendations.

OPTION I: Compressed Gas Service Option W:  Transmitter
Meters intended for compressed gas service require individual sizing of meter orifices to suit the desired flow rate, gas composition, line pressure and temperature.  In addition, dials are marked with type of gas, specific gravity, line pressure and temperature as part of this option.

4-20mA dc 4 Wire Transmitter with Linear Output. Click here for details.

Option J: Peak Flow Indicator Option W2: Transmitter
A second pointer is provided with a reset knob to provide an indication of the maximum flow rate achieved since reset. 4 -20 mA dc 2 Wire Transmitter with Local Mechanical Indicator.  Click here for details.
Option K: Saturated Steam Service  Option W3: Transmitter
The steam service option includes EPR seals, SS bellows and inverted housing. Steam pressures are limited to 120# saturated unless remote (option R2) is used. Temperature range: -80° F to 350° F 4-20 mA dc (same as W2) but without Mechanical Indicator (Blind Transmitter) Click here for details.
Click to openTransmitters Options
Option 4-wire (option W, Y, Z) 2-wire (option W2, W3)
Accuracy  Horizontal Flow ±3% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
Accuracy  Vertical Flow ±5% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
Ambient temp limit 120° / F50°C 120°F / 50°C
Current output 4-20 mA into 800 ohms max. (linear with flow) 4-20 mA into 650 ohms max. (350 ohms with option R) (current proportional to flow rate squared)
Contact rating (option X, Z) 3.0 amp @ 24 V, 1.0 amp @ 117 V, 0.5 amp @ 230 V n/a
Frequency output (option Y) 1000 Hz F.S. 5 V peak, 270 us on time n/a
Electrical rating General Purpose General Purpose (IS applied for)
Power input 24 Vdc, 100 mA 24 Vdc, 25 mA
Click to openREED Switch Options
Setability ±5% F.S.
Repeatability ±1% F.S.
Hysteresis 7 to 13% F.S.
Contact Rating 3 watts
Voltage 175 Vdc - max / 245 Vac - max
Current 250 mA max switching / 1.0 Amp max. carry
Option:1S2 1 Reed Switch with SPDT
Option:2S2 2 Reed Switches with SPDT
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