A&D EJ-6100 6100 g × 0.1 g Precision Balance Guide
- pete8781
- Jul 31
- 4 min read
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A&D EJ-6100 precision balance users get 6100 g capacity with 0.1 g readability in a compact format designed for general precision weighing, education, inventory, counting, and portable bench work. A&D’s legacy EJ brochure confirms the EJ-6100 model at 6100 g × 0.1 g, with a 127 × 140 mm pan, up to 61,000 pieces in counting mode, a 6000 g factory calibration-mass setting, four-AA battery operation, and optional Quick USB, RS-232C, and underhook accessories. MNM explicitly notes that the product-page image is a general picture, so the image in this article is labeled as representative rather than an exact unit photograph.
Core EJ-6100 Specifications
The model’s weighing capacity is 6100 g and minimum displayed value is 0.1 g. The official A&D legacy brochure lists repeatability of 0.1 g and linearity of ±0.3 g for the EJ-6100, along with sensitivity drift of ±20 ppm/°C between 10°C and 30°C. The LCD is backlit, the display refreshes about 10 times per second, and the specified operating environment is -10°C to 40°C at 85% RH or less without condensation.
Why 6100 g × 0.1 g Is a Useful Range
A 6.1 kg capacity gives more headroom than a pocket or analytical balance while preserving one-tenth-gram display resolution. That combination fits medium-size samples, parts bins, classroom experiments, formulation containers, mail pieces, and inventory quantities that would overload a smaller 500 g or 1 kg balance. It is not a substitute for a 0.001 g laboratory balance when milligram-level changes matter.
Counting Mode and ACAI
A&D’s EJ family supports counting with Automatic Counting Accuracy Improvement (ACAI). For the EJ-6100, the legacy brochure lists up to 61,000 pieces and a 0.1 g minimum unit weight, with sample choices of 5, 10, 25, 50, or 100 pieces. ACAI can refine the average unit weight as more pieces are added, but parts still need to be reasonably uniform. Validate a known count before relying on the result for costly inventory decisions.
Percentage Mode
Percentage mode stores a reference as 100% and displays later weights as a percentage of that reference. The EJ-6100 family specification uses a 0.1% minimum percentage display, with 10 g listed as the minimum 100% reference weight for the larger EJ models. This is useful for formulation checks, drying comparisons, material-change demonstrations, and QC comparisons where relative change is easier to interpret than raw grams.
Multiple Weighing Units
A&D lists a broad group of units for the EJ generation, including grams, pounds, ounces, troy ounces, carats, momme, pennyweight, grains and several regional units depending on configuration. Use only the units relevant to the workflow and train operators to recognize the active unit before recording data. A correct number with the wrong unit is still a bad measurement record.
External Calibration
The EJ-6100 uses external calibration rather than an internal motorized calibration weight. A&D’s legacy specification lists 6000 g as the factory calibration-mass setting. Use a suitable known calibration weight, let the balance and weight stabilize in the room, and verify the result after calibration with one or more independent test points. Calibration corrects scale response; it does not fix drafts, unstable tables, touching objects, or a damaged sensor.
Battery and AC Operation
The EJ generation operates from an AC adapter or four AA batteries. A&D’s legacy brochure cites about 70 hours on alkaline batteries with the backlight off. That makes the balance useful for classrooms, temporary inspection stations, mobile inventory work, and field-adjacent indoor tasks. Battery runtime falls with backlight use, battery quality, temperature, and usage pattern.
Optional Interfaces and Underhook
The brochure lists EJ-02 Quick USB, EJ-03 RS-232C, and EJ-07 underhook for EJ-3000/EJ-4100/EJ-6100. USB can simplify PC data capture; RS-232C supports traditional serial systems; the underhook allows below-balance weighing for applications such as density/buoyancy setups or awkward objects that cannot sit normally on the pan. Confirm accessory availability for this legacy model before designing a new installation around an option.
Who Should Consider the EJ-6100?
Good applications include general laboratories that do not require analytical readability, schools and universities, jewelry and craft operations with larger pieces, parts rooms, light manufacturing, small-batch formulation, inventory/counting, shipping preparation, and quality-control stations. The model is compact and versatile, but choose a different balance when traceability, environmental protection, legal-for-trade certification, or finer resolution is the primary requirement.
Frequently Asked Questions
Is the EJ-6100 really 6100 g × 0.1 g?
Yes. That exact capacity/readability appears in A&D’s legacy EJ brochure and the MNM listing.
Is the product photo exact?
MNM explicitly says its listing uses a general picture. The image here is therefore representative of the EJ family, not claimed as an exact EJ-6100 photograph.
Can it run without AC power?
Yes. The legacy EJ specification supports four AA batteries.
Can it count parts?
Yes. It supports counting with ACAI, with practical accuracy depending on unit-weight consistency and the relationship between part weight and scale resolution.
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