Ohaus 2060 Dial-O-Gram Harvard Trip Balance - Manual (Page 4)

4
Weighing Weighing Weighing Weighing Weighing
Before each weighing, be sure the Dial is set at zero, and the pointer is lined up
perfectly with the zero indicator.
The specimen to be weighed is placed on the left Platform of the Balance. The
Dial is then rotated until the Beam re-balances. Notice that magnetic damping has
been provided to bring the Beam to rest quickly. Because of the damping, the final
balance position must be achieved by turning the Dial knob slowly. With a little
practice, you will become proficient in learning exactly how fast to turn the Dial to
come to the balance position the first time. Since the capacity of the Balance far
exceeds the Dial capacity, the use of additional masses is necessary to take
advantage of the full capacity. Ohaus recommends Mass set No. 213-16 (1000g
x 1g).
For weights over 100 grams to capacity, it is easier to always set the Dial at 100
grams first. Then additional weights are placed on the right Platform of the
Balance until the total of these weights comes to within 100 grams. Then
rebalance by turning the Dial in a counter-clockwise direction from 100 grams to
its balanced position.
Use of the Tare Poise Use of the Tare Poise Use of the Tare Poise Use of the Tare Poise Use of the Tare Poise
This model is equipped with a Tare Beam assembly. A patented Tare Poise can
be used to tare off containers which weigh less than 200 grams. With the container
on the left hand Platform, slide the Tare Poise to a position on the Tare Beam which
indicates approximate balance. Rotate the Poise in either direction to position it
precisely on the Tare Beam to counterbalance the container on the left hand
Platform. When not in use, the Tare Poise is to be moved all the way to the left
of the Tare Beam. The spring inside the tare poise should also be pushed to its
left most position in order to obtain zero balance.
Reading the Vernier Reading the Vernier Reading the Vernier Reading the Vernier Reading the Vernier
Each graduation on the Dial has a value of 1 gram. A vernier adjacent to the Dial
divides these values to .1 gram increments. To read the vernier, read the lowest
gram value adjacent to the zero vernier graduation. Add to that the vernier
graduation at the vernier line which most closely lines up with any other Dial
graduations. The following illustration indicates a reading of 67.4 grams.