Rice Lake RL1200 Portable Beam Scale - Manual (Page 17)

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3.0 Operation
Use the following steps to safely and correctly operate the RL1200 platform scale.
1. With no load on the scale platform, position the sliding poise at zero. Unlock the trig loop. The beam should
be centered vertically in the trig loop. Adjust the back balance if necessary (see Figure 1-18 on page 12).
2. Lock the beam with the trig loop lock and place the object to be weighed on the platform. Add counterpoise
weights to a value slightly less than the estimated object weight. Release the beam lock.
3. The beam should rise to the top of the trig loop. If it does not rise, reduce the amount of counterpoise weights.
Move the poise along the beam until the beam balances with the tip centered in the trig loop.
4. When the beam balances, the object weight is the value indicated by the sliding poise, plus the face value of
the counterpoise weights used. For example, if there are three pounds of counterpoise weights (equivalent to
300 pounds) and the sliding poise(s) on the beam indicates 54.5 pounds, then the object weighs 354.5 pounds.
For a metric example, if there are three 500 gram counterpoise weights (equivalent to 150 kg) and the sliding
poise on the beam indicates 10.2 kg, then the object weighs 160.2 kg.
5. After the weight has been determined, lock the beam. Remove the object from the platform. Note the poise
may be locked at a desired reading by tightening the poise thumb locking screw if a desired weight is needed
repeatedly, such as bagging ingredients.