Optima Scale OP-900-LD User manual

optimascale.com
OP-900-LD INDICATOR
USER’S MANUAL

TABLE OF CONTENTS
Safety Precautions 1
Preparations and Set Up 1
Features 2
Power Supply 2
Specications 3
Remote Control 4
Display and Key Descriptions 4
Operating Instructions 5-6
Calibration 7-8
Indicator Parameter Settings 9-11
Helpful Denitions 12
Connectors 13
Troubleshooting 14
Q&A 15
Contact Us 16

1
SAFETY PRECAUTIONS
For safe operation of the weighing indicator, please follow these
instructions:
●Calibration inspection and maintenance of the indicator are prohibited by non-pro-
fessional staff
●Please ensure that the indicator rests on a stable surface
●The indicator is a piece of static sensitive equipment; Please cut off power during
electrical connections
●Touching the internal components by hand is prohibited
●DO NOT exceed the rated load limit of the unit
●DO NOT step on the unit
●DO NOT jump on the scale
●DO NOT use this product if any of the components are cracked
●DO NOT use for purposes other then weight taking
●To avoid damaging the battery do not keep charger plugged in once battery is fully
charged
●Make sure the weight is not over the Max capacity as it could damage the load cell
inside
● Material that has a static electric charge could inuence the weighing. Discharge
the static electricity of the samples, if possible. Another
solution to the problem is to wipe both sides of the pan and the top of the case with
an anti-static agent
Please take anti-static prevention measures
Any accumulated charge on the body of the human operator should be discharged rst
before opening the protective container with ESDS devices inside. The discharge can
be accomplished by:
●Putting a hand on a grounded surface or, ideally, by wearing a grounded Anti-static
Wrist Strap and an Anti-static Mat
PREPARATION & SET UP
●Plug into a wall outlet to avoid interference with other wirings
●Turn on the indicator while there is no load
●Calibration may be required before weighing when the scale is initially installed or
moved from a location

2
FEATURES
●Large 3” Ultra bright LED display
●Multiple weighing units: kg/lb
●Gross/Tare/Zero
●Accumulation weighing
●Power saving mode
●Remote with antenna
●Mounting bracket
Technical Parameters
●Accuracy class: 5000 e
●Resolution - Display: 30,000 ; ADC: 2,000,000
● Zero stability error: TK0 < 0.1μV//K
●Span stability error: TKspn < ± 6 ppm//K
● Sensitivity (internal): 0.3 μV / d
● Input voltage: -30 to +30mV DC
● Excitation circuit: 5 VDC, 4 wire connection, 6 load cell of 350ohm max
● AC power: AC 100-250V (use only the included 9V adapter supplied)
● Operation temperature: -10 °C ~ +40 °C
● Operation humidity: ≤90%RH
● Storage temperature: -40 °C ~ +70 °C (32-104°F)
AC Adapter
The indicator is powered by an adapter, plug the adapter directly into the AC110V outlet
located at the bottom of the indicator. We recommend to plug into a wall outlet to avoid
interference with other wirings.

3
SPECIFICATIONS
FIGURE 1: INDICATOR MEASUREMENTS
8.5in.
4.75in.
2.5in.
OP-900-LD
NET
STABLE
ZERO
lb kg
20.5in.
23in.
15.25in.
3.25in.
6in.

4
REMOTE CONTROL
Button Key Function Sign
1ON/OFF
2 Total
3 Unit
4Tare
5 Zero
6 Enter/Set
DISPLAY AND KEY DESCRIPTION
Net Shows you are in Net weight mode (weight without tared weight)
Stable Shows the weight on the scale is stable
Zero Shows you have zeroed the scale
lb The weight is shown in pounds
kg The weight is shown in kilograms
Power
Arrow keys
Return/Enter

5
OPERATING INSTRUCTIONS
Power On
●Turn on the power by pressing the power button (1) for 2 seconds. Once on, the
scale will begin to auto-check and count down from 0-9 sequentially before entering
the weighing mode
Note: Anything on the scale before powering on will automatically be tared out.
Zeroing
●The zero function is used only when the scale is empty and is not at gross zero due
to material build up
●Pressing the ZERO button (5) will reset your scale to 0
●Depending on what your manual zero range parameter is set to, you can zero out
any number within your set selection, after that you will receive an error and will
need to tare out the weight
Unit Selection
●To switch between measuring units kg/lb press the UNIT (3) button
Tare Function
●The Tare function is used when you only wish to see the current change in weight,
not the entire amount of weight that is on the scale
●When the indicator is in gross mode (normal weighing) pressing the TARE
button (4) will Tare the current weight on the scale and enter the net mode
(net light shown)
● For example if you are using a container add the container to the scale, press tare
to reset back to 0
●Add your product to the scale to weigh without the weight of the container
●To exit Tare mode press the TARE button (4) again to enter gross mode and you
will see the total weight of the container and the product
Note: If you remove the container the scale will show the minus weight of the container

6
Accumulation
●The accumulation function is used to add multiple weights and total them together
● In weighing mode load the rst weight, once stable press the TOTAL button (2) to
enter the accumulation mode.
● The screen will ash “n001” followed by the rst weight
●Remove weight so the scale is at 0 before adding the second weight to the scale
●Once stable press the TOTAL button (2) to add the second weight to the accumulated
total
● The screen will ash “n002” followed by the second weight
●Continue this process until all the weights you want to accumulate are stored
●When you are ready to see the accumulated weight press and hold
the TOTAL button (2) and the ENTER button (6) at the same time
●The accumulated number “n00#” (the number of weights you are adding
together) will ash on the display followed by the total
● The total will display by ashing between 2 sets of numbers
● There are 8 digits in total, the display will ash 4 at a time, the rst 4 on the left and
the last 4 on the right. For example if the rst 4 digits are “0012” and the last 4 digits
are “3456” the actual weight is 001234.56 or 1234.56 lbs/kg
● To exit accumulation mode, wait for the last 4 digits on the right of the screen to
appear, and then press and hold the TOTAL button (2) for one second
●“CLr n” will be displayed, asking you if you want to keep the data?
●If NO you do not want to clear the accumulated total, then keep “CLr n”.
●If YES you do want to clear the accumulated total, then use the arrow button (4) to
change to “CLr y”.
● Finally, press the ENTER button (6) to select exit accumulation mode and return to
back weighing mode

7
CALIBRATION PROCEDURE
1. Turn on the scale by holding ON/OFF for 2 seconds.
2. Press ON/OFF and ENTER together to access the setup menu.
3. If done correctly, the display should now show C01.
4. Press ENTER to access the C1 channel. The display should show [C1 #].
5. Press ZERO to choose which unit you want to calibrate in (1 = kg, 2 = lb).
6. Press ENTER to set the value. The display will now show C02.
7. Press ENTER to access the C2 channel. The display should show [C2 #].
8. Press ZERO to change the setting to the decimal places desired (The C2 channel is
used to adjust the decimal point on the scale. A value of 1 means there is one digit
behind the decimal point.)
9. Press ENTER to set the value. The display will now show C03.
10. Press ENTER to access the C3 channel. The display should show [C3 #].
11. Press ZERO to cycle through the values until the desired graduation appears.
(The C3 channel adjusts the divisions on the scale. A value of 1 selected and C2 set
to 1, the scale will read in 0.1 lb. increments.)
12. Press ENTER to set the value. The display will now show C04.
13. Press ENTER to access the C4 channel. The display will show [######].
14. Enter in the maximum capacity you want to use for this scale by using TOTAL and
UNIT to move the cursor left and right, and TARE and ZERO to move the val-
ues down and up. (The C4 channel is used to enter in the max capacity of the scale;
Make sure this doesn’t exceed the max capacity of the scale; Max capacity divided
by the increment set in C02 and C03 above cannot exceed 5000.)
15. Press ENTER to set the value. The display will now show C05.
16. Press ENTER to access the C5 channel. The display should show [C5 0].
17. The C5 channel calibrates zero on the scale. Make sure the scale is empty.
18. Press ZERO to change the value to 1.
19. Press ENTER . The display will count down from 10-1 while the scale is
calibrating zero. When the display shows 0 the zero calibration is complete.
REMOTE CONTROL
Button Sign Function
1ON/OFF
2Total
3Unit
4Tare
5Zero
6Enter/Set

8
20. Press ENTER to continue. The display will now show C06.
21. Press ENTER to access the C06 channel. The display will show [C6 0].
22. The C6 channel is used to calibrate the scale with a known weight. Press ZERO
to set the value of C6 to [C6 1]. Press ENTER . The display will ash SPAN,
and then show [######].
23. Enter the calibration weight value you will use (at least 10% of max capacity you set
in C04 by using TOTAL and UNIT to move the cursor left and right, and TARE
and ZERO move the values down and up.
24. Place the calibration weight you have on the empty scale and press ENTER .
25. The scale will count down from 10 to 0. Once 0 has been reached, the display will
show CALEnd.
26. Press ENTER to continue. The display will now show C07.
27. Press ON/OFF quicly to save and exit the setup menu.
28. The scale has now been calibrated. The display will show the value of the calibration
weight on the scale.
29. If the scale does not show the value of the calibration weight, check that the feet on
the platform are not screwed in too tightly, and verify that the platform is level.
30. Unload the scale; the display should read 000000.
31. If the scale does not display 000000, check that the feet on the platform are not
screwed in too tightly, and verify that the platform is level.
REMOTE CONTROL
Button Sign Function
1ON/OFF
2Total
3Unit
4Tare
5Zero
6Enter/Set