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FR78B BASIC Low Flow FlexSwitch® - Low Flow Monitoring Switch
Flow Switch SummaryThe FR78B Basic inline type low flow
switch provides sensitivity to low flow rates with fast response and
economical pricing in a compact package to deliver a cost effective
solution for non-hazardous in-line applications.
The FR78B BASIC's flow sensing element's cylindrical body is
encapsulated in a 1.25 inch plastic cube fitted with 0.25 inch 316
stainless steel inlet and outlet tubing. The flow sensing element of
this very reliable instrument weighs only 2.5 ounces, yet far
outperforms its competition in the low-cost area. The FR78B BASIC spans
the range of low flow requirements with response time as low as 1
second.
Ideal for OEM applications, the instrument comes equipped as shown above
with a single switch point control circuit board/socket and 10 feet of
interconnecting Teflon cable.
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Applications |
Chemical injection/additive flow monitoring |
Sample flow and gas chromatography |
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Seal leak detection |
Lube oil flow |
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Purge air flow monitoring |
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SpecificationsSetpoint Range:
Water-based Liquids:
0.08 to 2.25 cc/sec
Hydrocarbon-based Liquids:
0.05 to 25 cc/sec
Air/Gas:
4 to 1500 cc/sec
Repeatability: 1% of full signal range at constant process
conditions
Adjustable Response Time: From 1 to 150 seconds
Enclosure:
Standard: No circuit board enclosure
Optional:
Epoxy coated feralloy rated for NEMA Type 4X and hazardous locations
Groups B, C, D, E, F and G; CENELEC EEx d IIC and CE Mark (meets IP66)
Agency Approvals: Contact FCI.
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Flow Element
Materials of Construction: All wetted surfaces 316 stainless
steel with nickel braze per process specification AMS 4777
Process Connections:
Standard: 0.25 inch tubing, 1.8 inches [46 mm] length
with 0.028 inch [0.7 mm] wall thickness
Optional: 0.375 and 0.50 inch tubing
Inline Length: 5.3 inches [135 mm]
Operating Temperature: -100° to +350° F [-73° to +177° C]
Operating Pressure: To 1000 psig [69 bar(g)]
Interconnecting Cable: 10 feet [3 m] Teflon
Control CircuitOperation Temperature: -40° to +140° F
[-40° to +60° C]
Input Power: 115 ± 15 Vac or 230 ± 30 Vac, 50/60 Hz, 22 to 30 Vdc;
6 watts maximum
Relay Contacts: DPDT rated 2 amps at 115 Vac and 24 Vdc or 1 amp
at 230 Vac
Dimensions: 3.6 inches [92 mm] diameter, 2.4 inches [61 mm]
height |
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