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© 2011. Scaletron Industries Ltd. Plumsteadville, PA Scaletron. Scaletron Sets The Standard In Corrosion Resistance. Model 1099, Model 2305, Model
2306, Model 2307, Model 2308, Model 2310, Model 2330, Model 2350, Model 2352, Model 2353, Model 3001, Model 3002, Model 3003, Model 3004,
Model 3005, Model 3006, Model 4000SS, Model 4010, Model 4020, Model 4021, Model 4030, Model 4040, Model 4041, Model 4042 and Model 4042WB,
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. NOV 2011.
Please refer to these instructions for daily use of this scale. These instructions simulate
the procedure for every day usage. To apply power on the 2308B™, you must press and
hold the momentary switch located on the top of the indicator box.
To load a cylinder for weighing, please follow these steps:
1. If you know what the Tare Weight of your cylinder (the weight of an empty cylinder),
you may use the following procedure: With nothing on the scale base, press the momentary
switch button to apply power to the unit. Turn the black tare knob (located on the top of the
indicator box) counterclockwise, until the tare weight is shown on the LCD indicator as a
negative number. (Ex: Your cylinder is stamped with a tare weight of 100 lbs. You turn your
tare knob counterclockwise until it reads “–100”. Then you load the cylinder on to the base.)
Do not load the cylinder on before you have reached the tare weight. After your tare weight is
set, load cylinder on to scale base, and take a reading of the NET WEIGHT on the scale.
Please note that the battery life will be greatly decreased with this method due to applying
power for a prolonged period of time.
-OR-
2. If you know the gross weight of the cylinder does not exceed 199.9 lb, and you want to
see the GROSS WEIGHT on the display, use the following procedure: Set the tare knob to read
“0” on display. Load the full cylinder on to the scale base. Press the momentary switch button
on the indicator box to apply power for approximately 3 seconds, and take reading off of the
display.
V. Calibration Procedure:
The Model 2308™ Digital Gas Cabinet Scale is pre-calibrated at the factory to within
specified accuracy and is calibrated to standards traceable to the Bureau of Weights and
Measures. No further calibration should be necessary. If the electronics or load cells in
the base are being replaced, the following procedure should be used.
1. Press and hold the button on the indicator to apply power to the indicator.
2. 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 a number that is not “below” –199.9 lb.
3. 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.
4. Place a known weight on the base plate, as close to center as possible. Weight should be
equal to ½ of capacity, or greater.
5. Adjust R-15 until display reads weight of test weight on scale disc.
6. To complete calibration of 4-20mA output, adjust R-19 for proper 20 mA adjustment reading.
Factory setting is for 20 mA at 150.0 lb (68 kg.) unless specified otherwise.
7. Calibration is complete if specified accuracy is obtained.
VI. Troubleshooting:
