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KING-GAGE® Model 7750 Tank Level Indicator

KING-GAGE® Model 7750 Tank Level Indicator

Product catalog summary

Overview: The KING-GAGE Liquid Level Indicators are precision manometric instruments designed for continuous display of liquid levels in storage or processing tanks. They operate on a hydrostatic balance principle using a simple pneumatic system, making them safe for use in explosion hazard areas without the need for intrinsic safety devices.

Specifications: The indicators use a well-type manometer that acts as a frictionless hydrostatic force-balance. The liquid fill rises in direct proportion to the pressure applied. The system includes a 1/4" NPT tapped connection for pneumatic air/gas pressure input and is constructed with stainless steel and glass materials.

Indicator Scales: The accuracy of the indicator is highly dependent on the read-out scale, which is computer-calibrated according to tank capacity curves. Scales can be graduated in various units such as weight, volume, or depth. The scale length is determined by the maximum tank depth, specific gravity of the tank product, and the type of indicating liquid used.

Types of Indicating Liquids: Three types of indicating liquids are available: Mercury (silver) for deep tanks, No. 294 (red) for typical applications, and No. 175 (purple) for shallow tanks or special applications. Each type has a specific gravity and liquid scale factor that affects the scale length.

Models and Configurations: The KING-GAGE Indicator is available in single and multi-tube configurations, with various scale ranges and physical dimensions. The multi-tube indicator can be configured with 2 to 10 tubes and is available in wall mount or flush panel mount housing.

Additional Features: The system includes an overflow check valve to prevent liquid escape and a SafeGard Control to prevent overpressuring. The ClearGard Fluid is available for use with mercury to prevent deposits inside the glass tube.

Contact Information: For more information, contact King Engineering Corporation, part of the Marsh Bellofram Group of Companies, located in Newell, WV, USA.

Catalog excerpts

KING-GAGE® Model 7750 Tank Level Indicator-1

Effective: May, 2009 Supplment 1000-5 ® nk Liquid Level Inventory Monitoring Liquid Level\nd\cators Process Integratio Tank Level Indicator Analog column easily conveys tank level Accurate and reliable hydrostatic balance principle Simple pneumatic operation (no electrical input) KING-GAGE Indicators are pr頩cision manometric instruments designed for continuous display of liquid level instorage or processing tanks. A vertical column of indicating liquid within a glass tube rises in direct proportion to the pressure applied. This analog display is read against a custom-calibrated scale graduated in one or more units of depth, volume, or weight of tank contents. Working as a frictionless hydrostatic balance, these indicators have none of the mechanical parts common to most gauges. This makes the KING-GAGE Indicator an inherently accurate and extremelyl rugged device. Used in conjunction with a pneumatic 1:1 output sensor, the indicator accepts a pressure signal that is directly proportional to tank depth. Unlike electronic indicators or meters, KING-GAGE pneumatic indicators are inherently safe. Even in areas designated continuous explosion hazard, there are no intrinsic safety devices required. These indicators are in use worldwide and have proven their dependablility over decades of service. t. Model 7750 KING-GAGE ^3E3king engineering division www.king-gage.com

Open the catalog to page 1

KING-GAGE® Model 7750 Tank Level Indicator-2

Pneumatic Column Displays Supplment 1000-5 180Q^ 120 Indicator Scales The critical factor affecting accuracy of the indicator is the read-out scale. KING-GAGE scales are computer calibrated according to tank capacity curves (or from wet calibrations) to provide precise level indication for a specific tank. These scales can be graduated in practically any unit of measurement desired. In fact, 2-unit scales can provide a combination of weight, volume or depth indication. The size of the indicator (column height) is governed by the length of scale required. The combination of scale length and type...

Open the catalog to page 2

KING-GAGE® Model 7750 Tank Level Indicator-4

Pneumatic Column Displays Supplment 1000-5 2999999999999999999999299999999999999999999999999999999999999999999 9999999999999999999999999999999999999999999999999999999 2000- (D = (fl _ _ 1700^ 1600^ 00 GALLONS COLORS S 1500_^= - POUNDS PA = 160 = X - K 1300- = 140 - - B m 81100 - o : : - - OJ 120 5 - o 1000 = = < 900 = = 100 800 = 700^ _ 600^ 500^ - 400^ m = H-40fn EACH MARK = 10 POUNDS 闇 o o o o EACH MARK = 1GALLON K-1005 - 4 g 70000 Overflow Check Valve Prevents escape of liquid through the top of the tube should the indicator be overpres-sured. This float-type check valve is included with either...

Open the catalog to page 4

KING-GAGE® Model 7750 Tank Level Indicator

KING-GAGE® Model 7750 Tank Level Indicator

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