Designed for extreme, long-term reliability.
Detects and signals flow change.
Continuously adjustable while in operation.
6 interchangeable orifices plus 2:1 continuous switch adjustment with each orifice.
Calibrated independent of line pressure and temperature.
Maintains calibration limits when subjected to reasonable line hydraulic hammer or surge pulses.
Super-simple maintenance and checkout for personnel using a standard test meter.
Model Q-1 can also be fitted with a SPDT gold cross-bar switch for computer/PLC interface.
DPDT model available per request.
|
Flow Range |
0.12–8 GPM (0.45– 30.4 L/m) |
|
Working Temp |
180˚F (82˚C) Maximum |
|
Working Pressure |
300 psig (2,068 kPa) |
|
Process Connection |
½" NPT |
|
Electrical Switch |
SPDT (single pole double throw) 15A or Dry Circuit |
|
Enclosure |
NEMA 4 |
Monitoring flow of coolants and fluids supplied to:
Other Uses:
| ORIFICE # | CONTINUOUS SWITCH POINT ADJUSTMENT RANGE |
|---|---|
| 1 | 0.12 to 0.25 GPM |
| 2 | 0.25 to 0.50 GPM |
| 3 | 0.50 to 1 GPM |
| 4 | 1 to 2 GPM |
| 5 | 2 to 4 GPM |
| 6 | 4 to 8 GPM |
HYSTERESIS (Δ FLOW RATE TO ACTIVATE/DEACTIVATE SWITCH)
≈ 5% at upper end of flow range
≈ 25% at lower end of flow range
DIFFERENTIAL PRESSURE DROPS ACROSS UNIT
Under normal operating conditions:
≈ 1.0 psig at upper end of flow range
≈ 5.0 psig at lower end of flow range
WORKING LINE PRESSURE
300 psi max.
WORKING TEMPERATURE
180˚F max. (250˚F model available)
WETTED MATERIALS
Body: Red brass
Hardware: Noryl® (PPO) (10% glass fibers), Plastic
Working fluid “sees” red brass, phosphor bronze, and EPDM elastomer seal
Gasket: Cork/Nitrile blend
Optional Seal: Hypalon, Viton® or FKM
ELECTRICAL SWITCH CHARACTERISTICS
SPDT (single pole double throw)
15A, ½ hp @ 125 or 250VAC
½A @ 125VDC, ¼A @ 250VDC
5A @ 125VAC (tungsten lamp load)
10,000,000 operations, median
(Switch may be overloaded to 20A @ 125 or 250VAC for a minimum of 20,000 operations.)
