• Available as a set which includes scale, plastic beaker and a full set of charts
• Requires no reference to seperate charts or tables, saves time and prevents errors in calculations
• Simply hang the filled container on the scale hook, read the information directly from the scale
• High quality internal parts ensure trouble-free operation and long life
• A majority of the internal components are manufactured in stainless steel or advanced polymers
• The scales correlates the specific gravity of the ore with the percent solids of the pulp
• This information is displayed on a circular scale for several specific gravities by use of a simple weigh scale
• The simplicity of the scale along with its many applications have made this a common feature at concentrators throughout the world
• The scale can be used for fast, accurate percent solids determinations at various points through-out a concentrator, enabling adjustments to be made to keep, for example, a grinding circuit running effectively
• A full inventory of spare parts and accessories is always available including buckets and charts
• All our charts and buckets are interchangeable with the Marcy Brand Pulp Density Scale Pulp Density Scales are often referred to as Pulp Density Balance, Specific Gravity Scale, Density Balance, Density Scale, Marcy Scale

Operating Instructions
CAUTION The Pulp Density Scales are accurately set at the factory. DO NOT remove the back cover plate to make adjustments.
The scales are constructed to provide trouble-free operation and will provide accurate measurements if the mechanism is not altered or abused.

Mounting
Allow the Pulp Density Scale to hang freely from its supporting ring.

Calibration
Fill the container with 1 litre of clear water. Use a file to remove any material from the bottom holes until water leaks out. NOTE: the holes are located to retain 1 litre of water in the container. Hang the container full of water on the scale hook. Turn the zero adjustment screw directly above the scale hook until the pointer is vertical, reading 1.000 on the outer ring. The scale is calibrated.

Determining the Specific Gravity of Dry Solids
The desired sample should be dry and between 10 mesh and 100 mesh (Tyler). Hang the dry, empty container on the scale and pour in the dry sample of dry material until the pointer indicates 1.000 Kilograms on the outer ring of the dial (the container now has 1.000Kg of material in it). Pour the sample onto a rolling cloth or sheet of paper. Fill the container one-third full with clear water and gradually stir in the dry sample. Insure that the sample is thoroughly wetted and that air bubbles are eliminated. Hang the container on the scale and add clear water to the overflow holes. Read the dry solids’ specific gravity on the innermost ring of the dial chart.

Taking a Sample
Fill the container with the desired pulp or liquid. The liquid level should reach the container overflow holes. Wipe off any spilled material on the outside of the container. Hang the filled container on the scale and determine the specific gravity or percent solids in the pulp.

Determining Percent Solids
If you know the specific gravity of the dry solids in the pulp (see determining the specific gravity of dry solids), you can directly read the percentage in the pulp on the dial chart. Select the correct dial face for the particular dry solid specific gravity in the pulp. Hang the filled container on the scale. The percent solids in the pulp read clockwise from the specific gravity number on the green, white and red rings of the dial chart.
EXAMPLE: A reading of 44% solids at 2.2 specific gravity also reads 39% solids at 2.6 specific gravity and 35% solids at 3.2 specific gravity.

Changing the Dial Charts
1. Remove both screws from the side of the Scale Face
2. Remove the Retaining Ring and Perspex Face
3. Remove the two screws attaching the dial chart to the scale
4. Insert your new Dial Chart
5. Replace Retaining Ring and Perspex Face
6. Replace Screws on Side of the Scale
7. Recalibrate the scale as detailed earlier

NOTE: Attached to each scale is a dial chart which has the following specific gravity range of dry solids.

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Built to withstand the harshest working conditions, Aqua washdown scales are rated IP67 and feature a large removable stainless steel weighing pan. Ideal for industrial environments, precision load technology enables improved performance and greater efficiency during weighing and counting tasks.

The dual 20mm-high digit front and rear displays enhance visibility and productivity for the user. Checkweighing is simple, with separate high, ok and low coloured LED indicators that change colour to alert the operator if a sample is under, over or within preset limits. Power is supplied by AC adapter or rechargeable battery, and auto power-off conserves battery life.

Get the Aqua scales wet without worry, the IP67 scale performs effortlessly and accurately no matter how rigorous the application.

• Application: weighing, parts counting, percentage weighing, checkweighing
• IP67-rated for protection against water and dust
• External calibration allows for verification and adjustment with weights
• The sealed keypad protects against dirt and spills
• Overload protection helps prevent damage to internal components
• Solid ABS housing is durable for industrial use
• Heavy-duty rubber feet ensure the stability of the unit
• Bright LED display for easy viewing in most environments
• Checkweighing LEDs clearly show under, over and within acceptable limits
• Front and rear 20mm LED displays to allow for dual use
• Zero-tracking feature ensures the display returns to zero reading
• The auto power-off feature conserves battery life
• Rechargeable battery included for operation almost anywhere
• The stabilisation time of within 1 second
• AC adapter included

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