Operating instructions

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Operating instructions METTLER TOLEDO AT balances
Modell AT21 AT20 AT201 AT261 DeltaRange® AT200 AT400 AT460 DeltaRange®
Comparator 60g DeltaRange® 200g 60g DeltaRange® 400g
Readability 1 µg 2 µg 0.01 mg 0.01 mg 0.1 mg 0.1 mg 0.1 mg 0.1 mg 1 mg
Weighing capacity 22 g 22 g 205 g 62 g 205 g 205 g 405 g 62 g 405 g
Taring range (by subtraction) 0…22 g 0…22 g 0…205 g 0…205 g 0…205 g 0…205 g 0…405 g 0…405 g 0...405 g
Repeatability (s) full load 2 µg 4 µg 0.04 mg 0.04 mg 0.05 mg 0.07 mg 0.15 mg 0.15 mg 0.3 mg
Repeatability (s) 0...50 g 0.015 mg 0.015 mg 0.04 mg 0.05 mg 0.05 mg
Linearity ± 6 µg ± 10 µg ± 0.12 mg ± 0.08 mg ± 0.15 mg ± 0.15 mg ± 0.5 mg ± 0.5 mg ± 1.4 mg
Linearity within 500 mg
1)
± 4 µg ± 6 µg
Linearity within 10 g
1)
± 0.03 mg ± 0.03 mg
Stabilization (typical) 14...18 s 10...14 s 10...14 s 8...12 s 3...5 s 3...5 s 4...6 s 4...6 s 3...5 s
Built-in adjustment weights 2x10 g 2x10 g 2x100 g 2x100 g 2x100 g 2x100 g 2x100 g
Adjustment proFACT Fully automatic motorized self-adjustment with two built-in weights.
The accuracy of the adjustment depends on the geographic location and the height above sea level.
Adjustment with external weight: 20 g 20 g 200 g 200 g 200 g 400 g 400 g
Display with DeltaTrac® LCD (liquid crystal) VFD (Vakuumfluoreszenz)
Display sequence 0.2...0.4 s variable
Sensitivity: - Temperaturedrift
1) 2)
±1.5 ppm/° C
- Long-term stability
3)
with self-adjustment proFACT: ±1.5 ppm
Linearization Automatic self-linearization of the weighing curve (simultaneously with motorized adjustment proFACT)
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 Standard Accessory
Equipment designed test conditions P: 115 V or 230 V, admissible voltage fluctuation: -20% +15%, frequency 50/60 Hz, max. power consumption 15.5 W.
Power supply (national codes) S: 12.8 V=, 6.5 V=, 10.8 V=, 16.7 V=
Pollution degree 2. Overvoltage category II.
Temperature: 5...40 °C. max. relative atmospheric humidity: 80% for temperatures up to max. 31 °C linearly decreasing to 50% at 40 °C.
Height: 6000 m. Use only indoors in closed rooms.
Weighing pan with feedthrough for ø 28 mm ø 32 mm 80x80 mm; stainless steel
below-the-balance weighing suspended
Measures Free height above weighing pan 239 mm, Balance housing 241x433x289 mm (W x L x H), power supply 115x140x53 mm (W x L x H)
Weight Balance 9.3 kg, AC adapter 1.2 kg
1)
: In the temperature range 10...30 °C
2)
: 1 ppm = 1/1'000'000 (relative to the current weight display)
3)
: Sensitivity deviation / year with self-adjustment proFACT switched on
Technical specifications
(after a warm-up time of at least 120 min.)