HD6993

Application
Model HD6993 gauges are designed for extended life and accurate readings of fuel levels in tanks aboard diesel locomotives and rail cars.

General Information & Features
Model HD6993 gauges are for side or angle mounting. Tank drawings and strapping tables should be submitted with all inquiries.

These gauges feature an easy-to-read 4″ [100mm] fractional dial, or calibrated in gallons as an option, with an accuracy of ± 2.5%. A special calibration and functional check is performed on each gauge. A special close-tolerance pinion gear is included for minimum gear lash.

Stainless-steel materials have been selected for many components to ensure reliable service and maximum strength. Hard nickel coated gears and bearings minimize vibration-induced wear, and special construction reduces the amount of care necessary to prevent calibration changes during shipment, installation and service.

An optional support collar is available for gauges with unusually long supports and support pipes extending into the tank interior.

Documents
Data Sheet
Mounting Standards MS-518

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Description

General Specifications*

Mounting
Side or angle mount.

Dial Data
Dials are hermetically sealed and tested in a 8″ Hg vacuum. Fractional calibration is standard with gallonage calibration optional. Dial angles, computer generated, from customer supplied strapping tables are also an option. Fluorescent dials optional.

Accuracy
Depends on proper sizing of gauge and tank configuration. Direct accuracy is ±2.5%. Maximum parallax error = 1.5%. Repeatability direct = 1%. Sensitivity = 1%. Hysteresis is 2% including gear and pointer lag. Fricitional loss = 1%. 100% conformity inspection optional.

Temperature Range
Standard range is -50°F to 200°F, -45°C to 93°C.

Shock
Tested per MIL-S-901B, naval std. (similar gauge)

Vibration
Tested per MIL-STD-167, naval std. (similar gauge)

Tank Pressure
0 to 50 PSI, [0 to 3,4 Bar].

Approvals
U.L. listed for flammable liquids.

*Materials and specifications are subject to change without notice. Pressure ratings subject to change due to temperature and other environmental considerations.

Materials of Construction*

Head
Diecast aluminum. 4-1/4″ [107, 9] B.C.

Gasket
Buna “N” 0015-00422.

Dial Chamber
Aluminum with tempered glass crystal. Polycarbonate crystal optional.

Drive Magnet
Alnico.

Centershaft, Cross Stud, Support and Float Arm
Stainless spring steel.

Gear and Bearings
Hard nickel-coated stainless steel.

Float
Closed cell hard nitrile rubber.

Gear Housing
Stainless steel.

Material Trim for Water Service

When Ordering Specify:

All options desired. Always furnish tank drawing and strapping table.

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