INSTRUMENTATION > FLOW > CRFS Rotor Flow Indicator & Switch
Typical Pressure Drop
CFRS flow switches combine visual confirmation of flow with dynamic, electronic switch operation. As liquid passes through the meter body a magnetic rotor spins at a rate proportional to flow. This causes a series of magnetic fields (the rotor vanes) to excite a hall effect sensor, producing a series of voltage pulses. Switch point calibration is easy: a local LED signals when set point is reached.
CFRS flow 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, model CFRS will switch to a "no-flow" condition should the rotor stop for any reason.
Typical Applications include protecting expensive electronic equipment from coolant flow failure on semiconductor processing equipment, lasers , medical equipment, X-Ray and other high power tubes and robotic welding equipment.
Click here for information on our other flow switches.
Wetted Body Materials: Brass, 316 Stainless
Steel or Polypropylene (Hydrolytically
Stable, Glass Reinforced)
Rotor Pin: Ceramic
Rotor: PPS Composite, Black
Lens: Polysulfone
O-Ring: Viton® (Alloy Bodies); Buna-N
(Polypropylene Body)
Low Flow Adaptor: Glass Reinforced Polypropylene
Max. Operating Pressure:
Brass or Stainless Steel: 200 PSIG @ 70°F, 100 PSIG Max. @ 212°F
Polypropylene: 100 PSIG @ 70°F, 40 PSI Max. @180°F
Operating Temperature:
Brass or Stainless Steel: 20°F to 212°F (-29°C to 100°C)
Polypropylene: 20°F to 180°F (-29°C to 82°C)
Ambient Viscosity: Maximum 200 SSU
Input Power: 24 VDC or 115 VAC
Relay Contact Ratings (SPDT): 1 Amp, 24 VDC Resistive; 0.3 Amp, 110 VAC
| Current Consumption | ||
| Voltage | No Load | Load (Relay Energized) |
| 24 VDC | 20 mA | 35 mA |
| 115 VAC | 45 mA | 95 mA |
1) Power unit and adjust flow to alarm point
2) Adjust setpoint with screwdriver using LED as reference
LED not illuminated: turn screwdriver counterclockwise until illuminated
LED illuminated: turn screwdriver clockwise until not illuminated.
ORDERING INFORMATION
EXAMPLE: C180395
| FOR YOUR CONVENIENCE, THESE ITEMS ARE AVAILABLE ONLINE OR PLEASE CALL 1-800-253-2497 TO ORDER |
|||||
| CRFS SWITCH | |||||
| Body Material | Port Size NPT | Flow | Input Power | Part Number | |
| Low Range* | Standard Range | ||||
| Polypropylene | 1/4" | 0.1 to 1.0 | 0.5 to 5.0 | 24 VDC | C155425 |
| 115 VAC | C155876 | ||||
| 1/2" | 1.5 to 12.0 | 4.0 to 20.0 | 24 VDC | C155485 | |
| 115 VAC | C155886 | ||||
| Brass | 1/4" | 0.1 to 1.0 | 0.5 to 5.0 | 24 VDC | C156265 |
| 115 VAC | C156266 | ||||
| 1/2" | 1.5 to 12.0 | 4.0 to 20.0 | 24 VDC | C156268 | |
| 115 VAC | C156269 | ||||
| 3/4" | - | 5.0 to 30.0 | 24 VDC | C180395 | |
| 115 VAC | C180396 | ||||
| 1" | - | 8.0 to 60.0 | 24 VDC | C181688 | |
| 115 VAC | C181689 | ||||
| Stainless Steel | 9/16-18** | 0.1 to 1.0 | 0.5 to 5.0 | 24 VDC | C165073 |
| 115 VAC | C165074 | ||||
| 1/2" | 1.5 to 12.0 | 4.0 to 20.0 | 24 VDC | C165077 | |
| 115 VAC | C165078 | ||||
| 3/4" | - | 5.0 to 30.0 | 24 VDC | C181691 | |
| 115 VAC | C181692 | ||||
| 1" | - | 8.0 to 60.0 | 24 VDC | C181693 | |
| 115 VAC | C181694 | ||||
| * Use with low flow adaptor supplied | |||||
| **Straight thread with O-ring | |||||
|
|
| FOR YOUR CONVENIENCE, THESE ITEMS ARE AVAILABLE ONLINE OR PLEASE CALL 1-800-253-2497 TO ORDER |
|||
| CRFS SWITCH | |||
| Line Size | Body Material | O-Ring Material | Part Number |
| 1/4" & 1/2" | Plastic | Buna-N | C155870 |
| Brass/Stainless Steel | Viton® | C167364 | |
| 3/4" & 1" | Brass/Stainless Steel | Viton® | C157186 |
A low flow adaptor is supplied with all units. It is used to produce
accurate response at low flow rates. Install the adapter, as shown
above, in the port selected for incoming flow.
|
||||||||||||||||||