A&D EK-12Ki 12 kg × 1 g NTEP Class II Precision Balance Guide
- pete8781
- 7 days ago
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A&D EK-12Ki 12 kg × 1 g NTEP Class II precision balance is the high-capacity certified EK-i model for commercial and controlled weighing that needs a compact 12-kilogram range. A&D’s current U.S. product page explicitly lists 12,000 g capacity, 1 g readability, external calibration and NTEP Class II status. MNM likewise sells the exact model as NTEP legal for trade. Unlike a simple retail platform, EK-12Ki also includes standard RS-232C, ACAI parts counting, percent, comparator functions, GLP-style output and underhook compatibility, allowing one scale to serve both transaction and internal process roles when its class/division fit the application.
Exact EK-12Ki specifications
Capacity is 12,000 g and readability is 1 g. A&D U.S. lists approximately two-second stabilization, a 133 × 170 mm stainless pan and external calibration. MNM lists 1 g repeatability and ±1 g linearity, along with a 16 mm backlit LCD, 10 display refreshes per second, compact metal housing, standard RS-232C and power from the AC adapter or optional rechargeable battery. The balance combines unusually high capacity for this footprint with the familiar EK-i five-button interface.
NTEP Class II legal-for-trade status
A&D U.S. identifies EK-12Ki as NTEP Class II, not merely “NTEP available.” That is a model-specific legal-metrology designation. The actual business must still follow applicable local placement-in-service, registration, sealing and inspection requirements. Class II status can be relevant in higher-value commercial applications, but the scale’s 1 g verification/display division must still be appropriate for the particular commodity and regulation. Approval is not a blanket statement that one model fits every sale-by-weight use.
Why 12 kg capacity with 1 g readability matters
Many compact precision balances trade capacity for fine resolution. EK-12Ki keeps a small bench footprint while accepting gross loads up to 12 kg. That suits larger precious-material lots, bulk components, packages and commercial samples where one-gram resolution is sufficient. It is not the right tool for tiny gemstones, pharmaceutical micro-dosing or methods requiring 0.1 g or 0.01 g; use a finer model for those tasks even if the load is well below capacity.
External calibration and 12 kg default mass
MNM lists 12 kg as the default calibration mass. An internal/process unit can be externally calibrated using a suitable known reference under the owner’s quality procedure. For a device already placed into legal-for-trade service, protected metrological settings should be handled through qualified service and the applicable weights-and-measures process. Routine users can and should verify zero and known loads without treating calibration adjustment as a daily operation.
Underhook capability at high capacity
A&D lists EKW-07i underhook compatibility for EK-12Ki. This supports below-balance density, specific-gravity or suspended-load methods where the fixture can safely handle the load. A hanging setup must be mechanically isolated and independently verified. When a trade or regulated method is involved, confirm that the exact underhook configuration is acceptable for the intended legal or test procedure rather than assuming top-pan certification automatically covers every fixture.
Counting, percent and comparator functions
MNM lists a maximum count around 12,000 pieces, a 1 g minimum unit weight and sample sizes of 5, 10, 25, 50 or 100. Percent mode uses a 100 g minimum 100% reference with 0.1% divisions. Comparator HI/OK/LO logic supports internal fill, sorting and acceptance work. These features are most useful for heavier components and larger batches because 1 g is the base weighing/readability scale.
RS-232C, GLP output and portable battery
Standard RS-232C can send weights/counts to a PC, printer or logger and accept supported commands. GLP-style identification output can help controlled recordkeeping. Current A&D EK-i family information advertises approximately 250 hours with the optional rechargeable battery. The battery and comparator-relay option cannot be installed together, so determine whether the station prioritizes mobility or internal relay automation before ordering.
Frequently asked questions
Is EK-12Ki NTEP legal for trade? Yes, A&D U.S. lists it NTEP Class II. What are capacity and readability? 12,000 g × 1 g. Is calibration external? Yes. What default calibration mass does MNM list? 12 kg. Does it include RS-232C? Yes. Does it support underhook weighing? Yes. Can it count parts? Yes, with a 1 g minimum unit weight. Is battery operation available? Yes. Is 1 g fine enough for every precious-metal or commercial application? No; the legal interval and method must match the commodity and jurisdiction.
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