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© 2004. Scaletron Industries Ltd. Plumsteadville, PA Scaletron. Scaletron Sets The Standard In Corrosion Resistance. Model 1099, Model 2310,
Model 2330, Model 2350, Model 2352, Model 2353, Model 3001, Model 3002, Model 3003, Model 3004, Model 3005, Model 3006, Model 4010, Model
4020, Model 4021, Model 4030, Model 4040, Model 4041, Model 5305, and Pro-Gram Guide are trademarks of Scaletron Industries Ltd. Total
Electronic System is a service mark of Scaletron Industries Ltd. All Rights Reserved. PRINTED IN U.S.A. Oct 2004.
total tare weight. With the scale empty, turn the black tare knob mounted on the outside of the
door of the indicator, and turn it counter clockwise to read a negative number that is the tare
weight. (For instance, the tare weight is 100 lbs. total. You turn the black tare knob until the
scale indicator reads “-100” lb.) Now you may load the full cylinder onto the base and attach
any equipment. Your display will read the NET WEIGHT (the weight of the contents only). As
you use the contents, the weight will constantly read the net weight. When you are ready to
refill, simply remove the used cylinder, adjust the tare weight to read the negative tare weight
of the new cylinder and equipment, and load it onto the scale. You are then seeing the Net
Weight again.
If you know the net weight of the cylinder (contents weight only), please use this
procedure:
With the scale empty, determine the NET WEIGHT of the cylinder you are loading onto the
scale. Load the cylinder onto the base and hook up any equipment that may affect the weight
reading of the scale. Using the black tare knob on the outside of the indicator box, turn the
black knob counter-clockwise until you see the (positive) number that is the net weight
(contents). Doing this, you have “tared out” the cylinder weight and equipment weight so that
the weight you see is the contents only. As you use the contents, the weight will constantly
decrease until it is empty, and it is time to load a new cylinder. Load on the new cylinder,
attach all equipment, and adjust the tare knob to read the known Net Weight again. You are
ready to use the contents again.
V. Calibration Procedure:
The Model 2350™ Dual Cylinder Scale is calibrated at the factory to within specified
accuracy and is calibrated to standards traceable to the Bureau of Weights and Measures.
No further calibration is necessary. If the electronics or load cells in base are replaced, the
following calibration procedure should be used.
Steps are as follows:
1. Plug the AC Cord into a well-grounded receptacle. There is no power on / off switch, so
power is applied as soon as it is plugged in.
2. Allow approximately 15 minutes warm-up time before calibration.
3. While indicator is warming up, proceed to check under cylinder support disc to make sure
there is no debris.
Begin with one side of the scale to complete this process, and then return to step four
to repeat on other side.
4. WITH NO WEIGHT APPLIED TO THE SCALE, turn the black tare knob on the outside of
the door of the indicator in the clockwise direction to make sure that there is at least +10 lb. of
weight in the tare knob. If not, adjust R-6 to see a positive reading. Once that is established,
turn the black tare knob on the door of the indicator counter-clockwise until it stops (DO NOT
OVER TURN KNOB OR YOU WILL DAMAGE THE TARE POT!) Once it reaches the most
negative reading, make sure you have at least –150 lb. on the display. If the tare span is
large, you may get to a –1 reading and this is a weight under-load condition. Turn R-6 until
you see a number that is not “below” –199.9 lb.
5. Adjust tare knob on front of weigh meter until scale reads zero with no weight on platform.
Adjust R-22 to set the 4mA reading to 0lbs.
5. Place a known weight on the disc, as close to center as possible. Weight should be equal
to ½ of capacity, or greater.
6. Adjust R-15 until display reads weight of test weight on scale disc.
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