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Excell Digital High Precision Weighing Scales User Instructions

Excell Digital High Precision Weighing Scales FEATURE

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Excell Digital High Precision Weighing Scales

Excell Digital High Precision Weighing Scales PRODUCT


EXCELL Precision Balances are made for reliable and high-precision weighing both in the lab and under harsh industrial conditions. Our Controllers and Weighing Indicators provide you with accurate results and fast material transfer in applications from basic filling to complex batching processes. Our high-quality bench scales and portable scales, with efficient and reliable weighing, are used for any type of industrial application. Our Retail Solutions are perfectly placed for weighing, labeling, ticketing, and packaging needs.

EXCELL Precision Balances are designed for dependable, high-precision weighing in both laboratory and challenging industrial environments. For applications ranging from straightforward filling to intricate batching procedures, our controllers and weighing indicators give you precise results and quick material transfer. Weighing devices of the highest caliber, including our bench scales and portable scales, are employed in all industrial applications. For needs in packing, labeling, ticketing, and weighing our retail solutions are excellently situated.


To enable you to use this scale correctly, we suggest that you read this manual carefully.

  • Do not use scale in areas with excessive water and don’t spray the scale or indicator with water when cleaning. Remove all water from the scale and indicator with a clean dry cloth.
  • The load placed on the platform must not exceed the maximum weighing capacity of the scale.
  • Keep the scale away from high temperatures and damp conditions.
  • If the scale is not going to be used for some time, please clean it and store it in a plastic bag in dry conditions. A desiccant sachet may be included to prevent moisture build-up.
  • If the scale is not going to be used for some time, the internal rechargeable battery should be recharged every three months.
  • Before using the scale after a long period of storage, please ensure that the internal battery is fully charged. NOTE: Care should be taken not to leave the internal battery on charge for too long, as this may decrease the life of the battery.



  1. Dual-weighing units: Kilogram (kg) and pound (lb).
  2. Multi-function operation: Full range tare; Pre-tare; Hold function; Net / Gross weight display; Simple counting; Preset weight value and quantity value; Adjustable noise filter setting from 01 ~ 15 (³15,000 division configuration only); Check-weighing configuration.
  3. User-friendly design:
    • Auto calibration
    • AC / DC power supply
    • Large LCD with built-in backlight
    • Auto power-off design to ensure the performance stability
    • Double over-load protection
  4. Variable calibration settings depending on the different calibration divisions:
    • Standard division (under 10,000 internal resolution): Capacity and weight calibrations are available for accurate weighing.
    • High precision division (over 10,000 to 150,000 internal resolution): Linearity, capacity, and weight calibrations are available for accurate weighing.
  5. Options
    • RS-232 interface
    • Relay output
  6. High performance in A/D converter (weighing indicators)
    • Input sensitivity: 0.3 μ V/D
    • Sample speed up to 16 times / second
    • Non-linearity: 0.01 % of full-scale
    • Input zero range: -1 mv ~ +5 mv
    • Input signal range: –1 mv ~ +14 mv
    • Load cell excitation: 5V DC ± 5% 100mA
    • Load cell drive capacity: up to 4 350 Ω load cells


The available capacities for selection are different and depend on various models:



  1. The power consumption is around DC 20 mA (system + load cell), and the rechargeable battery can be used for up to 200 hours.
  2. The power consumption is around DC 67 mA (system + load cell + backlight), and the rechargeable battery can be used for 60 hours approximately.
  3. The power consumption is around DC 71 mA (system + load cell + backlight + RS-232), and the rechargeable battery can only be used for 56 hours approximately.


Please note when the symbol is shown on the display, the internal battery needs to be recharged.

  • The scale will power off automatically without recharging after the low battery symbol shows up for 20 to 30 hours (3 to 5 hours if the backlight is active) on the display. As a recommendation, the scale must be fully recharged before operating the scale again.



  • HIGH: Preset High Limit Weight Value
  • OK: The range between Low and high Limit Weight Value
  • LOW: Preset Low Limit Weight Value
  • kg: “kg” unit
  • lb: “lb” unit
  • Pcs: “COUNTING” mode indicating the number of pieces
  • →0←: “ZERO” indication and platform stable confirmation
  • Net: “Net Weight ”indication
  • Battery: “Low Battery” indication
  • 1 : (STABLE) “Stable” indication
  • 2 : ( PT) “Pre-set Tare” mode
  • 3 : (M+) “Accumulation” mode
  • 4 : ( ) “Sample Too Small” indication
  • 5 : ( ) “Piece Weight Too Small” indication






Switch on the scale. While the scale is counting backward to zero, press and hold the →0← key until the display shows the software program version number: “02001”. Release the →0← key, and the scale enters the configuration setting mode F 0. is displayed.



Relay Output

Relay’s function acts as signal output in the check-weighing mode. When an object’s weight value reaches one of the setting points (HI, OK, LOW), the relay outputs a signal through PIN 1, PIN2, or PIN 3. To set the check-weighing configuration by pressing the key (in TW & AW models) or enter F4.

Relay Pin Description

  • PIN 1 ⇒ OK  output
  • PIN 2 ⇒ High  output
  • PIN 3 ⇒ Low  output
  • PIN 4 ⇒ VDD
  • PIN 5 ⇒ GND
  • PIN 6 ⇒ COMMON

Connection Illustration


Power Source Illustration

The relay circuit board can be supplied either by external AC power or internal DC power.

  • Relay powered by external AC power
    PIN4 and PIN5 are connected with AC power source; J1 and J2 OPENExcell-Digital-High-Precision-Weighing-Scales-User-Instructions-7
  • Relay powered by internal DC power
    No power source input to PIN4 and PIN5; J1 and J2 SHORT


Connection Setting

OK, High and Low can be set at NO (normal open status) or NC (normal close status) respectively.

  • OK、High、Low at NO ( normal open status) ⇒ default settingExcell-Digital-High-Precision-Weighing-Scales-User-Instructions-9
  • OK、High、Low at NC( normal close status)
    Please use a knife to cut the J3, J4, and J5 not connecting (open) and solder the J6, J7, and J8 connected.


FAQS About Excell Digital High Precision Weighing Scales

A precision weight scale is what is it?

A precision scale is a very sensitive weighing device that is specifically made to measure the mass of solids and liquids with a high degree of accuracy.

What is the precision weighing balance’s range?

Normally, weigh to the closest 0.001 to g.

What role does precision play in sample weighting?

Precision balances are used in laboratories to effectively carry out tasks like weighing test materials and sampling amounts, formulation, density determination, purity analysis, quality control testing, material and conformance testing, thanks to their high precision and cutting-edge technology.

How much weight can a precision balance support at once?

120 g to 64 kilogram

How accurate is the digital weighing scale?

+/- 0.1%

What do a weighing scale’s accuracy and precision mean?

The accuracy of a scale measures how closely its reading corresponds to the actual weight of the object being measured. Repeated measurements of the same object can be used to determine how well they will agree with one another thanks to precision. Resolution is calculated by dividing a scale’s overall weighing range by its display’s legibility.

How does measurement depend on precision?

The accuracy of the tool increases with decreasing measurement increments.

What benefit does precision provide?

Permit the equipment to be precisely calibrated.

Why is accuracy preferable to precision?

The best measures are those that are both exact and accurate.

What use does a high-precision balance serve?

weighing test specimens, instruments, chemicals, and blood bag medications.

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