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Micro Balance
CM-A Series Touch Screen Micro Balance
The Aczet CM-A series are touch screen micro balances with 1 µg (0.001 mg) readability and capacities of 5 g, 6.1 g, 11 g and 21 g (models CM 5A, CM 6A, CM 11A and CM 21A). A 5.7-inch touch screen display, motorised internal calibration with Perfect Self Auto Calibration (PSAC), an infrared sensor for touch-free operation and a built-in real-time clock for GLP records make them practical for weighing filters, pipette checks and small samples in pharma, food, testing and research laboratories.
Specifications across the series
These are ranges for the whole CM-A Series Touch Screen Micro Balance line. Each model has its own exact values: see the brochure below or ask our team and we will confirm the right model for you.
- Model
- CM 5A, CM 6A, CM 11A, CM 21A
- Readability (µg)
- 1 (0.001 mg)
- Weighing capacity (g)
- 5 to 21 (CM 5A: 5, CM 6A: 6.1, CM 11A: 11, CM 21A: 21)
- Repeatability (±µg)
- 1 to 3, depending on the load range
- Linearity (±µg)
- 5 to 7 (CM 5A and CM 6A: 5, CM 11A: 6, CM 21A: 7)
- Tare range (subtractive)
- Full capacity
- Min. sample weight as per USP (mg)
- 2 to 2.4 (CM 5A and CM 6A: 2, CM 11A and CM 21A: 2.4)
- Pan size (mm)
- Ø 15 to Ø 30
- Response time (sec.)
- 8 - 10
- Calibration and adjustment
- Perfect Auto Internal Time & Temp. Controlled Smart Calibration (PSAC)
- Display
- 5.7" touch screen display
- Unit of measure
- g, mg, ct, GN, mo, oz, dwt, t1T, t1H, t1S, mom, Bat, MS
- Sensitivity drift (ppm/°C)
- 2 (2 × 10⁻⁶ / °C)
- Interface
- RS 232C (USB, Windows direct communication, optional)
- Operating temperature (°C)
- 18 to 30
- Power supply
- A/C adaptor 230 V or 115 V ± 20 %, 50 - 60 Hz
- Compliance
- ISO GLP / GMP
- Weighing chamber (mm)
- Ø 90
- Net weight / gross weight (kg)
- 10.20 / 14.70
- Packing dimensions (mm)
- 565 × 565 × 355
Key features of CM-A Touch Screen Micro
1 µg readability
Four models (CM 5A, CM 6A, CM 11A, CM 21A) read to 1 µg (0.001 mg) with capacities from 5 g up to 21 g.
5.7-inch touch screen
One touch screen display on every model, with ten built-in applications such as percent weighing, statistics and check weighing.
Infrared hands-free sensor
Operate the balance with a wave of the hand, so valuable or toxic samples are weighed without touching the balance.
Automatic internal calibration
Motorised internal calibration with Perfect Self Auto Calibration (PSAC), triggered by a temperature change or a set time interval.
Two-terminal design
Electronics and display are separate from the mechanical weighing cell, which reduces the effect of heat on the result.
Key advantages of CM-A Touch Screen Micro
One display, four capacities
Pick the capacity you need, from 5 g to 21 g, and keep the same touch screen operation.
Fast weighing
Response time is 8 to 10 seconds, so a weighing does not hold up your routine.
Safer for sensitive samples
Touch-free sensors reduce the risk of cross-contamination and spills, and the draft shield is easy to clean.
Traceable records
Built-in real-time clock and a printer option support dated GLP documentation.
Overload awareness
A capacity tracker on the display shows how close you are to the maximum load of the weighing cell.
About CM-A Touch Screen Micro
The Aczet CM-A Series Touch Screen Micro Balances are made for weighing very small samples with a readability of 1 µg (0.001 mg). The line covers four models, CM 5A, CM 6A, CM 11A and CM 21A, with capacities of 5 g, 6.1 g, 11 g and 21 g. All models share one 5.7-inch touch screen display, so you choose the capacity and not the operating style.
Two-terminal design
The balance has two parts: one housing the electronics and display, and one with the precise mechanical measuring cell and the glass draft shield. Separating them keeps the heat of the electronics away from the weighing cell and its effect on the result, and it lets you place the display where it is comfortable to read.
Sensor and calibration
High-end Mono-Tech weigh sensor based on electromagnetic force compensation (EMFC).
Motorised internal calibration with Perfect Self Auto Calibration (PSAC): when the temperature changes by a set value or a set time has passed, the balance calibrates itself.
Capacity tracker on the display to watch for overloads.
Operation and applications
5.7-inch touch screen display and an infrared sensor: wave your hand to operate the balance without touching it, useful for valuable or toxic samples.
Ten built-in applications such as percent weighing, filling, statistics, check weighing and formulation.
Built-in real-time clock for dated, traceable records in line with ISO, GLP and GMP practice.
Many weighing units, including g, mg, ct, oz, dwt, grain and momme.
Where it is used
Typical work includes filter paper weighing, micro pipette checks, preparing small standards and quality control in the pharma and biotech industry, food and beverages, metals, plastics and electronics, pulp, paper and textile, engineering and testing laboratories.
Accessories
Aczet offers an anti-static ionizer (CI-01), a dot-matrix data printer (CPR 02), an anti-vibration weighing table, calibration test weights, a battery backup unit, 21 CFR Part 11 PC software and IQ, OQ and PQ qualification documents. 21 CFR Part 11 compliance is available on request.
Exact values differ from model to model, so the table on this page shows ranges for the whole CM-A line. Tell our team what you weigh and how much, and we will recommend the right model and share the exact figures from the Aczet datasheet.
Documents & research papers
Frequently asked questions: CM-A Touch Screen Micro
The Aczet datasheet lists four models: CM 5A (5 g), CM 6A (6.1 g), CM 11A (11 g) and CM 21A (21 g). All read to 1 µg (0.001 mg).
The CM-A has a 5.7-inch touch screen display, while the standard CM has an alpha-numeric backlit LCD with push buttons. The standard CM series is also offered up to 31 g (CM 31).
It depends on the load. For the CM 5A and CM 6A it is 1 µg up to 2 g and 1.6 µg from 2 g to 5 g. The CM 11A and CM 21A are 1.5 µg up to 0.2 g, 2.0 µg from 0.2 g to 5 g and 2.5 µg from 5 g to 11 g; the CM 21A is 3.0 µg from 11 g to 21 g.
It has motorised internal calibration with Perfect Self Auto Calibration (PSAC): the balance calibrates itself when the temperature changes by a set value or after a set time. Calibration with an external test weight is also possible.
The datasheet gives a minimum sample weight as per USP of 2 mg for the CM 5A and CM 6A and 2.4 mg for the CM 11A and CM 21A. The result depends on the installation location and environmental conditions.
Aczet states that 21 CFR Part 11 compliance is available on request, with PC software as an accessory. Ask our team if you need it.
The balance has an RS 232C interface, and a USB interface with Windows direct communication is available as an option. Aczet offers a dot-matrix data printer (CPR 02) for printing results.
Indoors in a dry environment, on a stable bench, at an operating temperature of 18 °C to 30 °C and away from vibration and draughts. An anti-vibration weighing table and an anti-static ionizer are available as accessories.
Enquire about CM-A Touch Screen Micro
Share your requirement and our team will get back to you.
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