Mettler Toledo AT261 Analytical Balance

Cambridge Scientific ID: 25289 Category: Tag:



  • Standard asynchronous serial format
  • Baud rate and parity freely selectable
  • Bidirectional data transfer
  • Break recognition
  • Galvanic isolation
  • RS-232 and 20 mA current loop
  • Several handshake modes
  • 7-bit ASCII character set
  • Extensive command set – access to virtually all balance parameters
  • Easy connection to printers and computers



  • Readability: 0.01 mg – 0.1 mg
  • Weighing capacity: 62 g – 205 g
  • Taring range (by subtraction): 0…205 g
  • Reproducibility (s) 0…50 g: 0.015 mg
  • Reproducibility (s) 50…100 g: 0.02mg, 0.03 mg
  • Reproducibility (s) 100…200 g: 0.03mg, 0.05mg
  • Linearity: ± 0.03mg, ± 0.15mg
  • Linearity referred to 5 g: ± 0.02 mg
  • Stabilization time (typical) variable with vibration adapter: 8,12,18 s – 3,5,7 s
  • Built-in calibration weights: 2×100 g. Measured to ±0.1 mg (±0.01 mg AT20/21) at an air density of 1200 mg/l on virtual mass with density 8.0 g/cm3.
  • Calibration FACT: Fully automatic motorized self-calibration with two built-in weights (manual triggering also possible). Test possibility to check the calibration.
  • Calibration with external weight: 200 g
  • Display with METTLER Deltatrac: LCD (liquid crystal)
  • Display sequence: 0.2…0.4 s variable
  • Sensitivity drift (5…40°C): Maximum deviation with automatic self-calibration ±0.00015%, (with automatic self-calibration switched off) 1 ppm/°C.
  • Linearization: Automatic self-linearization of the weighing curve (simultaneously with motorized calibration FACT).
  • Data interface: CL and RS232C, bidirectional, built in as standard, all lines galvanically separated.
  • Glass draft shield: No hindering guideways; automatic motorized opening or at a keystroke. 
  • Inner draft shield AT: Standard
  • AC adapter (to national codes): Voltage 115 V or 230 V, admissible voltage fluctuations: +15…-20%. Frequency: 50…60 Hz; power consumption 15,5W max.
  • Admissible ambient conditions: Temperature: 5…40 °C; relative humidity: 25…85% (non-condensing). Height above sea level: -500…+6000 m.
  • Weighing pan feedthrough for below-the-balance weighing: 80×80 [mm]; stainless steel
  • Measures: Free height above weighing pan 239 mm, Balance housing 241x433x289 (WxLxH), AC adapter 115x140x53mm (WxLxH)
  • Weight: Balance 9.3 kg, AC adapter 1.2 kg
  • Vibration adapter (symbol [ ~ ]): 3 settings for matching to location: suppression of the effect of vibrations.
  • Weighing process adapt. (symbol [ ]): 4 settings for matching to weighing application: dispensing, universal setting, absolute weighing, special applications.
  • Stability detection (ASD): 8 settings with different tolerance thresholds (off, 1…7). 
  • Weight unit 1: Freely selectable in the configuration register: g, mg, oz, ozt, tl, GN, dwt, ct, C.M., mo.
  • Weight unit 2 (incl. applications): Freely selectable in the configuration register: g, mg, oz, ozt, tl, GN, dwt, ct, C.M., mo, PCS, Stk, %. The selected weight units 1 and 2 can be switched at a keystroke.
  • Applications: PCS, Stk. (piece counting, reference 10, 20, 50, 100) and % (percent weighing) are built-in applications.

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