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8700 Series Gauge

Fixed Length Magnetic Gauges

Application

The 8700 series gauges are used to measure water levels in all types of low-pressure, non-heated systems. Ideal for boats, recreational vehicles, campers, etc. NOTE: For hot or pressurized water service, see 8400 Series.

General Information & Features

The magnetic construction permits the complete sealing off of the inside liquid from the outside gauge head and dial allowing quick dial replacement without the loss of liquid or time.

The dial pointer is silicone-dampened. All dials, senders, and switches are instantly replaceable — there are just two screws to remove and replace.

The rugged gear drive is standard with shrouded, stainless steel, beveled gears de­signed to shed and work out any loose particles that might jam the gear action. All materials have been selected to provide outstanding durability in water-gauging applications. Sealing between the gauge and the tank is achieved through the use of the 0015-00423 Buna-N gasket.

Model Number Magnet Available Dials
8741 Large Alnico Direct-reading dial or TwinSite® sender.
Choice of 0-30, 0-90, 240-30 Ohms
8781 Small Alnico Direct-reading dial only.

Documents

Data Sheet

MS-533 Installation Instructions

General Specifications*

Mounting

Recommended for top-mounting only.

Accuracy

Accuracy depends upon proper gauge sizing. Junior 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.

Temperature

-40°F to 158°F, -40°C to 70°C.

Shock & Vibration

Suitable to mobile applications.

Power

0.5 watts maximum for TwinSite® versions.

Tank Pressure

0 to 10 PSIG [0 to 0,68 Bar].

Approvals

UL recognized for marine water service

Note: For installation instructions see MS-533.

 

*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

Lightweight injection molded polyester SAE gasoline gauge flange. (2-1/8" [54 mm] bolt circle fop 5 #10 screws. Screws not furnished.)

Centershaft, Support & Float Rod

Brass.

Gears, Cross Stud & Bearing

Stainless steel.

Drive Magnet

Plated alnico.

Gear Housing

Acetal.

Float

Nitrile rubber.

Gasket

Buna-N, 0015-00423.

Direct Reading Dial

Hermetically sealed polycarbonate.

TwinSite® Sender

Polyamide.

Dial screws

Plastite 0040-00479.

When Ordering Specify:

1. Gauge model number.

2. Tank depth.

3. Float orientation, 3 o’clock standard.

4. Details of any optional features.

09-12-2017