Ohaus 311 User Manual

DIAL-O-GRAM® BALANCE
Model 310
and

®

CENT-O-GRAM

BALANCE

Model 311

Instruction Manual

INTRODUCTION

This manual covers Installation and Operation for the Ohaus Dial-O-Gram
Balance Model 310 and Cent-O-Gram® Balance Model 311.

DESCRIPTION

Ohaus Dial-O-Gram® Balance Model 310 and Cent-O-Gram® Balance Model 311
are manufactured from high grade precision zinc castings for the base and
precision aluminum castings for the beam. Agate bearings, hardened steel knife
edges, and stainless steel pans ensure a high standard of quality for these
products.

The 3-point base together with the special floating bearing principle and beam
design eliminates the need to have a level adjustment. Zeroing is easily and
quickly achieved by means of a counter ba lancing knob at the end of the beam.
The balances are intended for use in educat ion, and industry applications. The y
produce quick readings due to their damping mechanism. Both balances can
also be used to make specific gravity m easur ements. M ode l 310 has two beams,
each with a sliding poise, and a graduated dial and vernier which enables
readings of 0.01 g. Capacity of the M odel 3 10 is 3 10 gram s. Model 31 1 has fo ur
beams, each with a sliding poise. Capacity of the Model 311 is 311 gr ams with a
readability of 0.01 g.

®

Figure 1. Model 310.

Figure 2. Model 311.

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UNPACKING AND ASSEMBLY INSTRUCTIONS

The balance has been shipped with each component packed securely in a
protective, expanded polystyrene container. Follow these instructions and you
can assemble your balance in just a few minutes.

1. Remove the poly-container from the s hipping carton and place it so that you
can see the base and specific gravity stand. See Figure 3.

2. Cut the strap and lift off the upper half of the poly-container. Remove the base
and specific gravity stand. Hold the bas e upside down. Insert the round, flat
end of the stand through the slot in the base. Rotate stand into position as
shown in Figure 4. Rotate it as soon as the round end clears the openi ng.
When the base and the specific gravity stand are upright, the OHAUS on the
stand must be facing down.

Figure 3. Base and Specific Gravity Stand in Container.

Figure 4. Base and Specific Gravity Stand out of Container.

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