8700

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

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Description

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.

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