Consent Preferences

6500 Series Gauge

4 Bolt Gauge for Low Pressure Tanks (0 – 25 PSIG)

The 6500 Series Senior gauges are designed for use in low pressure tanks 0-25 psig [0-1,7Bar] containing diesel fuel, gasoline, fuel oil and lubricating oils.
Used in many applications such as construction equipment, stationary generators, boats, farm equipment and home heating.

General Information & Features
The 6500 Series Senior gauges are available in gear-action models for top, centerline or angle mounting. In lever-action models, centerline is only available.
The standard float is nitrile rubber. Aluminum or stainless steel floats are available at extra cost. The gauge is mounted to a mating Senior flange 2 1⁄2″ bolt circle [63,5mm] using four 1⁄4″-28 x 9⁄16″ long bolts. The gasket is Buna-N.

Model Number Action Mounting Dial, Sender or Switch Data
6540 Gear Top Senior TwinSite® Sender in choice of 0-30,
0-90, or 240-30 Ohm ranges. #5002S00062
direct-reading dials may also be used
6543 C/L or Angle
L6543 Lever C/L
6560 Gear Top #5025S00570 Senior side-reading fractional
6580 #5002S00062 Senior direct-reading fractional
6583 C/L or Angle
L6583 Lever C/L #5002S00547 Senior direct-reading fractional

Data Sheet
MS-501/502 Installation Instructions
Adapters 22 Series – Senior Sheet Steel
Adapters 22 Series – Senior Machined Steel
Adapters 22 Series – Senior Zinc
Florida DEP Registered Equipment List EQ-901

General Specifications*

Accuracy depends upon proper gauge sizing. Senior dials ±6%, TwinSite® dials ±10%. Accuracy may be less depending upon tank shape. Accuracy may be less near full and empty. Accuracy may be less if tank is not level. This gauge is not to be used for filling. All accuracy estimates are expressed as a percent of full scale.

-40°F to 158°F, -40°C to 70°C.

Point exposed portions of gauge, less dial, for marine applications.

Shock & Vibration
Suitable to mobile applications.

0.5 watts maximum for TwinSite® versions.

Tank Pressure
Up to 25 PSIG [1,7 Bar].

These direct indicating gauges are UL listed for flammable liquids. Some modesl UL recognized for marine service.

Note: For installation instructions see MS-501/502 (mounting standard).

When Ordering Specify:

1. Gauge model number.
2. Tank diameter and riser height.
3. Mounting location.
4. Ohm range on TwinSite® versions.
5. Preferred switch on switch gauges, if other than standard.
6. Any listed options or preferences.

Materials of Construction*

Die cast aluminum.

Centershaft, Support Tube & Float Rod
Tempered aluminum.

Gears, Cross Stud & Bearing
Stainless steel.

Drive Magnet

Gear Housing
Acetal plastic or aluminum.

Nitrile rubber.

Buna-N, 0015-00004 or 0015-00079.

Direct Reading Dial
Aluminum with acrylic crystal, hermetically sealed.

Side Reading Dial

Aluminum with polycarbonate crystal, hermetically sealed.

TwinSite® Sender

Mounting Bolts
Zinc-plated steel 1/4″-28 x 9/16″ long.

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

Product Inquiry - 6500

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    Revised 01-29-2016