Single or Two Stage for Pump or Alarm, Depth to 12', Specific Gravity to 0.50
These heavy duty top-mounted liquid level controls operate in pressurized or non-pressurized tanks and sumps with pressures to 600 psi and temperatures to 500°F. They can be ordered to operate at depths to 12 feet with a 12 foot guide rod. Adjustable in single stage and two stage operation to provide action such as operating a pump; pump and high alarm or shutdown; pump and low alarm, or high and low alarm; or high, high alarm; or low, low alarm. Alarm functions can also be used as shutdowns. Series 401 is available in mercury or snap action contact switches. Specific gravity applications from 0.5 to 1.0.
CHART B - FLOAT, FLOAT ROD AND STOPS
CHART C - FLANGE & GUIDE ROD ASSEMBLY
CHARTS D & E - ELECTRICAL CIRCUITS AND RATINGS
Minimum Specific Gravity:See Dimensional Drawing.Temperature Rating:-0°F (-9°C) to 500°F (260°C).Switch Type:Snap action or mercury.Electrical Rating:See Model Chart.Wiring Connections:G, WT or E enclosure, terminal block. EV enclosure, 18" (460 mm) leads.Process Connection:Top mount flange.Enclosures:G, painted steel and aluminum; WT, painted steel, aluminum and neoprene; E, aluminum; EV, aluminum and neoprene.Wetted Parts:See Dimensional Drawing and Model Chart.Weights:Electrical head and float assembly only: G, WT 10 lb (4.5 kg); E, EV 14 lb (6.3 kg). Flange only: 49, 17 lb (7.7 kg); 59, 20 lb (9 kg); 69, 27 lb (12.3 kg); 89, 47 lb (21.3 kg). Guide rods assembly: 4 ft (1.2 m), 14 lb (6.4 kg); 8 ft (2.4 m), 28 lb (12.7 kg); 12 ft (3.6 m), 42 lb (19 kg).