Humboldt H-2713A Specific Gravity Bench Set User Manual

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Next, install the overflow port extension and the drain valve to the Specific

Gravity Tank, The bulkhead fittings are shipped installed into the tank. The

overflow port extension and the drain valve are shipped with teflon thread tape

installed so that you can just thread these items into their respective bulkhead

fittings in the tank, snuggly, to prevent leaks. Refer to product photo for correct

orientation.

The Tank Heater and Circulator are shipped as a single mountable unit. Just

hang the unit onto the tank lip and plug into a 120VAC source.

You are now ready to fill the tank with water. Place the tank on the Bench

platform and fill the tank with water. The tank should be filled with a sufficient

amount of water to allow the sample and the bail of the sample container to be

under the water.

Unpack the balance and place on top of the bench so that the weigh-below port

and hook line up with the hole in the top of the bench. Attach the AC cord to

the scale and plug into a 120VAC outlet.

You are now prepared to proceed with a specific gravity determination. Mount

your sample into an appropriate sample container and attach the sample and

container to the scale's weigh-below hook. In most cases, you will need an

accessory hook to attach the sample container to the weigh-below hook.

In most cases this can be as simple as a piece of wire bent into an S-hook

configuration. This hook is not included, since it depends on what type and

size of sample and container are being used.

Once you have a sample and sample container attached to the scale, you can

begin to raise the water tank up to immerse the sample and container into the

water tank. To do this, push down on the silver, crank lock on the back of the

bench. This releases the hand crank, which allows you to begin raising the tank

up. To perform an accurate test, crank the tank up until both the sample and the

bail of sample holder are beneath the water.

Please refer to ASTM C127 for specific test instructions and methods.