ROCHESTER SENSORS Rochester Gauges 8640 Series 1 1/2 in. Top Mounting Magnetic Liquid Level Tank Gauge w/ Senior TwinSite Dial - Range: 0-90 Ohm - Fits 12 3/4 in. Tank Depth 8640-01170

Rochester Gauges 8640 Series 1 1/2 in. Top Mounting Magnetic Liquid Level Tank Gauge with Senior TwinSite Dial The 8600 Series Senior spiral gauges are designed for use in measuring liquid levels in hydraulic, lubricating or fuel-oil storage tanks, and gasoline and diesel fuel levels in stationary, standby and mobile generators. The 8600 Series is not recommended for off-road equipment. The 8640 spiral gauge incorporates a strong nickel-plated Neo magnet capable of driving a TwinSite® sender which provides a direct, fractional reading and also sends an electrical signal to a remote receiver. Specifications Range: 0-90 Ohm Mounting: Designed for top-mounting only Temperature: Standard operating range is -40°F to 158°F, -40°C to 70°C Humidity: Exposed portions should be painted for marine applications, less dial Shock: Shorter styles are suitable for some mobile, off-road applications Vibration: Shorter styles are suitable for some mobile, off-road applications Power: 0.5 watts maximum for TwinSite® versions Tank Pressure: 0 to 25 PSIG [0 - 1,7 Bar] maximum Approval: Direct indicating gauge. Available UL listed for flammable liquids. Some models UL recognized for marine service Accuracy: Accuracy depends upon proper gauge sizing and tank set up - TwinSite dials +/-12% Construction Head: Die-cast zinc Guide Rod: Zinc-plated steel Centershaft: Brass Tie Plate, Guide, & Bearing Pin: Stainless steel Center Shaft Holder & Magnet Bushing: Acetal Float: Nitrile rubber Drive Magnet: Neo, nickel-plated TwinSite® Sender: Polyamide Downloads MS-516 Spiral - Installation Guide (PDF Download)