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The Model 140 utilizes a precision crafted diaphragm as the sensing element. Its superior design isolates the mechanical working parts in the unit from liquid inside the vessel.

Operation

Head pressure moves the diaphragm (attached to a shaft), resulting in a linear motion. The shaft connects to the indicator at a pivot point. At this pivot point, the linear motion transfers into rotary action, which then moves the indicator to accurately show the liquid level.

Features

• Easy To Adjust
• The unit features external Zero Adjust and Span Adjust knobs that can be field adjusted in less than 15 minutes without changing the vessel’s liquid level or disassembly of the gauge.
• Easy To Read
• Scale reads the same as a hand tank gauge; no need to convert PSI of head pressure into feet and inches of water to get the correct reading.
• Corrosion Resistant
• 100% of all internal and external parts are constructed of corrosion-resistant materials.
• No Spills
• Unit equipped with two diaphragms. If the primary diaphragm fails, the sight glass indicator will tell the operator of the failure, while the secondary diaphragm will continue to display the correct gauge reading.

Options

• Connector options include 2” NPT, 2”-150# ANSI R.F. Flanged or 2” grooved end inlet, with many others available. All connections are stainless steel.
• Scale options include Feet of Water, Gallons, Barrels and Cubic Meters with other options available upon request.
• Multiple Switch options including a 2, 4 and 7 switches.
• Pulsation Dampener minimizes pressure spikes caused by erratic flow of liquid into or out of the vessel, delivering a constant pressure on the spring for more accurate gauge readings.

Specifications

• Operating Temperature: 20°F to +225°F, Standard
• Maximum Head Pressure: 90 psi
• Range (Vessel Height): 3 feet thru 60 feet
• Electrical Switches: SPDT Micro Switch; 11 Amp @ 130 or 250 VAC,
• 1/2 Amp @ 125 VDC
• Electrical Connections: 1/2-inch Female Pipe Thread, 3/4-inch Female Pipe
• Thread also available
• Indicator Accuracy: + or - 2% of full scale.