"" AOIP OM 21 Mikroohmmetre | Kraft Teknik Ölçüm Cihazları

Özellikler

Resistance measurement

Range	Resolution	Accuracy at 90 days (23°C ±1°C)	Measuring current	Voltage drop
2 mΩ	0.1 μΩ	0.05% + 0.3 μΩ	10 A	20 mV
20 mΩ	1 μΩ	0.05% + 2 μΩ	10 A	200 mV
20 mΩ	1 μΩ	0.05% + 3 μΩ	1 A	20 mV
200 mΩ	10 μΩ	0.05% + 10 μΩ	10 A	2 V
200 mΩ	10 μΩ	0.05% + 20 μΩ	1 A	200 mV
200 mΩ	10 μΩ	0.05% + 30 μΩ	100 mA	20 mV
2 Ω	100 μΩ	0.05% + 100 μΩ	1 A	2 V
2 Ω	100 μΩ	0.03% + 200 μΩ	100 mA	200 mV
2 Ω	100 μΩ	0.03% + 300 μΩ	10 mA	20 mV
20 Ω	1 mΩ	0.03% + 1 mΩ	100 mA	2 V
20 Ω	1 mΩ	0.03% + 2 mΩ	10 mA	200 mV
20 Ω	1 mΩ	0.03% + 3 mΩ	1 mA	20 mV
200 Ω	10 mΩ	0.03% + 10 mΩ	10 mA	2 V
200 Ω	10 mΩ	0.03% + 20 mΩ	1 mA	200 mV
200 Ω	10 mΩ	0.03% + 30 mΩ	100 µA	20 mV
2 kΩ	100 mΩ	0.03% + 100 mΩ	1 mA	2 V
2 kΩ	100 mΩ	0.03% + 200 mΩ	100 µA	200 mV
20 kΩ	1 Ω	0.03% + 1 Ω	100 µA	2 V

Automatic or manual selection of measurement range
Accuracy given in % of reading + counts over 90 days at 23 ±1°C
Maximum capacity: 26,000 counts

Max. open circuit voltage: 3 V (can be limited to 20 mV or 50 mV at the terminals of the resistor to be measured)

Further features

Resistance types	Inductive resistances: Coils, transformers, motor windings... Non-inductive resistances: Earth bonding, coating, contact resistances...
Measuring current	Internal or external source DC current from 100 µA to 10 A Continuous, pulsed or pulsed alternated
Measurement time	< 1 s in direct current mode < 1,5 s in pulse current mode < 2 s in alternate current mode
Measurement trigger conditions	Manual or automatic trigger from 2 measures/s to 1 measure/9h, allowing a single operator to be able to perform measurements
EMFs	Automatic compensation of EMF parasites before each measurement for a greater accuracy
Temperature compensation	Choice of metal temperature coefficient Choice of ambient temperature (programmed or measured with external probe) Temperature compensation at 20°C: Resolution: 0.1°C, accuracy: ±0.5°C (R20 = Resistance compensated at ambient temperature equal to 20°C
Temperature coefficient beyond operating range	< 10% accuracy/°C
Relative measurements	Display L = R-R0 or L = 100 x (R-R0)/R0 in % Where L: read value, R: measured value and R: reference value either recalled from memory or entered by the operator
Coil heating calculation	Coil heating calculation according to ambient temperature, original coil resistance at ambient temperature, coil resistance once heated and coil material
Alarms	2 programmable thresholds with visual and sound signal and relay outputs
Outputs	Two relays (1 A / 220 VAC) 1 analogue output 0 – 2.5 V (load >= 2.5 kΩ, resolution: 10 mV, accuracy: ±10 mV)
Calibration	Digital calibration without internal adjustment

General specifications

Size	225 x 88 x 310 mm
Weight	2 to 3 kg depending on options
Display	LCD 26,000 counts, 16 figures lighted, 11.5 mm high
Power supply	115 / 230 V (50 / 60 Hz)
Battery with internal charger(option)	Type: 12 V battery pack Battery life:2 to 8 h according to use Charging time: 14 h
Communication ports	RS 232 in standard IEEE 488-2 in option Allows programming, data management and unit calibration directly from a computer
Storage capacity	1,000 measurements with average, minimum and maximum value Memory reading directly on the display or through digital and analogue interfaces

Environmental specifications

Reference range	23°C ±1°C (RH: 45 to 75 % w/o condensing)
Operating reference range	0 to 50°C (RH: 20 to 80 % w/o condensing)
Limit operating range	-10°C to +50°C (RH: 10 to 80 % w/o condensing)
Storage temperature limits	-30°C to +55°C (- 15°C to + 50°C for model with battery)
Protection IP	IP40 according to EN60529
Maximum altitude	2,500 m

Safety specifications

Protections	Electronic protection for ‘voltage’ wires Fuse protection for ‘current’ wires Protection against ‘current’ circuit breaking during inductive resistance measurements
Class	In accordance with EN 61010-1 Category III, pollution 2
Rated voltage	50 V
Chocks and vibrations	EN61010-1
EMC conformity	Immunity: EN 50082-1/1992 Conducted and radiated emissions: EN 55022, class B Radiated: IEC 801-3/1984 Conducted: IEC 801-4/1988 Electrostatic discharges: IEC 801-2/1991

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