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Top Mounted Level Switches with Graphite Displacers
Models 610/710 DESCRIPTION
The Model 610 single stage control and the 710 two stage control are top mounted level switches of the adjustable differential type and utilize graphite as standard displacer material. Because they are of the solid displacer type they are unaffected by pressures, leakage, collapsing, or surface agitation, making them well suited for difficult applications such as surging or agitated liquids.
With a simple field adjustment, the displacer can be positioned to any desired elevation below the mounting connection to open and/ or close an electric or pneumatic switch. The distance between the on/off or open/close is adjustable from a minimum of 2-1/2” (in a specific gravity of 1.0) to the maximum length of the cable, which is 10 feet (standard). Controls may be supplied with cables up to 75 feet for 600 series controls and 40 feet for 700 series.
FEATURES • Solid Graphite displacers Model 610 Model 710
• May be used for pressures up to 1500 psig with standard constructions • Simple adjustment of displacers for various switching differentials • Specific gravities as low as 0.35 (600 Series only) with standard displacer options • Ideal for highly corrosive applications • CSA and UL Approved
APPLICATIONS • High Temperature Water or Oils • Petro-Chemical Processes • Pump Control (Adjustable differentials) • Alarm Annunciation
SPECIFICATIONS Specific Gravity Differential Inches Differential mm.
1.2 2.1 53
1.1 2.2 56
1.0 2.4 61
.95 2.5 64
Minimum switching differential for desired specific gravity (2-½” displacer) Basic Temperature Rating is -20° F to +400° F (-29° C to +204° C)