RFS Type Electronic Flow Sensor0 pages

Flow Set Point Switching – RFS Types
t Combines visual confirmation of flow
with dynamic, electronic switch operation
t Easy, adjustable switch point calibration:
a local LED signals when set point is reached

Dimensions
Polypropylene Bodies
2.37˝
(60.2 mm)
.64˝ (16.3 mm)

RotorFlow® Switches build an extra level of reliability and
protection into your equipment. By principle of operation,
the rotor cannot be deceived into indicating a positive
flow situation when no flow actually exists. Once
set to a desired actuation point, RotorFlow
will switch to a “no-flow” condition should
the rotor stop for any reason.

2.50˝ (63.5 mm)
3.06˝ (77.7 mm)

VDC

VAC

Typical Applications
Protect expensive electronic
equipment from coolant flow
failure on...

.80˝
(20.3 mm)
2.38˝ (60.5 mm)

•tSemiconductor
Processing Equipment
•tLasers • Medical Equipment
•tX-Ray and Other High Power Tubes
•tRobotic Welding Equipment

.80˝ (20.3 mm)
4.50˝ (114.3 mm)

Brass and Stainless Steel Bodies - .25˝ and .50˝ Port
File No. E45168

2.37˝
(60.2 mm)

Specifications

FLOW SENSORS – ELECTRONIC

Wetted Materials
Body
Rotor Pint
Rotort
Lenst
O-Ringt
Low Flow Adaptort
Operating Pressure, Maximum
Brass or Stainless Steel Bodyt
tt
Polypropylene Bodyt
tt
Operating Temperature,
Brass or Stainless Steel Bodyt
Polypropylene Bodyt
Electronicst
Viscosity, Maximumt
Input Powert
Relay Contact Ratings (SPDT)t
Current Consumptiont
24 VDCt
115 VACt
Repeatabilityt
Set Point Accuracy (Factory Set)t
Set Point Differentialt
Electrical Terminationt
tt
tt
tt

2.50˝ (63.5 mm)

Brass, 316 Stainless Steel or Polypropylene
(Hydrolytically Stable, Glass Reinforced)
Ceramic
PPS Composite, Black
Polysulfone
Viton® (Alloy Bodies); Buna N (Polypropylene Body)
Glass Reinforced Polypropylene
200 PSIG (13.8 bar) @ 70°F (21°C),
100 PSIG (6.9 bar) Max. @ 212°F (100°C)1
100 PSIG (6.9 bar) @ 70°F (21°C),
40 PSI (2.8 bar) Max. @ 180°F (82°C)
-20°F to 212°F (-29°C to 100°C)
-20°F to 180°F (-29°C to 82°C)
150°F (65°C) Ambient
200 SSU
24 VDC or 115 VAC
1 Amp, 24 VDC Resistive; 0.3 Amp, 110 VAC
No Loadt Load (Relay Energized)
20mAt35mA
45mAt95mA
2% Maximum Deviation
± 5%
15% Maximum
20 AWG PVC-Jacketed, 24˝ Cable. Color Codes:
Red = +VAC/VDC, Black = Ground,
White = N.O. Contact, Brown = N.C. Contact,
Green = Common

3.01˝ (76.4 mm)

VDC

VAC

.87˝
(22.1 mm)

1/4˝ PORTS = .80˝ (20.3 mm)
1/2˝ PORTS = .87˝ (22.1 mm)
4.50˝ (114.3 mm)

2.32˝ (58.9 mm)

Brass and Stainless Steel Bodies - .75˝ and 1.00˝ Port
VDC

2.50˝
(63.5 mm)

1.06˝
(26.9 mm)

2˝
(50.8 mm)

3.94˝
(100 mm)

VAC

Note:
1.t Optional pulsed output available with RFS. Consult factory.
1.06˝
(26.9 mm)

F-2

Visit www.GemsSensors.com for most current information.

4.76˝
(120.9 mm)

RFS Type / p1of2 / 30-JUL-14