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Mô tả

Mô tả

A precision handheld calibrator that can be used as a general purpose current and voltage source. High performance and simple operation make it suitable for test engineers, R&D, service, and calibration technicians. Offering both versatility and practicality the 1044 can source and measure voltage and current. The 0.05% accuracy is ideal for simulation and calibration in most engineering applications.

The 1044 combines the advantages of digital accuracy with analog control. Progressing from the familiar functions of the 1030 calibrator, the 1044 offers more ranges, better accuracy and the ability to measure as well as source.

The large, easy to read LCD display shows the actual output, even when the connected load exceeds the specifications. This important feature eliminates the risk of large errors when connecting to unknown loads. The display also indicates if the battery becomes critically low.

In the source mode, voltage up to 20V and current up to 20mA are generated in three ranges. When in current source mode the 1044 has a high 24V compliance voltage which is ideal for powering process loops.

In the measurement mode, the range and function can be easily selected, with the measured input accurately shown on the LCD display.

The 1044 voltage current calibrator is housed in a pocket sized, ABS case and comes with a leatherette carry case containing a compartment for storing test leads. Connections are by standard 4mm plugs or by simply clamping the wires under the terminals. A single 9V battery powers the unit or an external 12V DC power supply may be used which disconnects the internal battery.

Applications
Common use of the 1044 is to simulate a transducer or measure the current flow in a transducer loop. The 1044 can be used to check a 4-20mA system in either source or measure mode, with the 24V compliance voltage powering the loop when current source mode is selected.

In the source mode, the 1044 may be used to calibrate meters, thermocouple indicators, data loggers, for signal injection, semiconductor characterisation, or as a backing off source. In the measure mode, the 1044 may be used in the same way as a DMM, checking DC voltages and current over 3 ranges with excellent resolution and accuracy.

Thông số kỹ thuật

RangeResolutionAccuracyOutput CurrentTemp CoefficientNoise
0 to 200mV100μV0.05% of full scale + 2 digits20mA± 150ppm/°C<30ppm of full scale
0 to 2V1mV0.05% of full scale + 2 digits20mA± 150ppm/°C<30ppm of full scale
0 to 20V10mV0.05% of full scale + 2 digits20mA± 150ppm/°C<30ppm of full scale
RangeResolutionAccuracyInput ImpedanceTemp Coefficient
0 to 200mV100μV0.05% of full scale + 2 digits1MΩ± 150ppm/°C
0 to 2V1mV0.05% of full scale + 2 digits1MΩ± 150ppm/°C
0 to 20V10mV0.05% of full scale + 2 digits10MΩ± 150ppm/°C
RangeResolutionAccuracyOutput VoltageTemp CoefficientNoise
0 to 200μA100nA0.05% of full scale + 3 digits24V Max± 200ppm/°C<50ppm of full scale
0 to 2mA1μA0.05% of full scale + 3 digits24V Max± 200ppm/°C<50ppm of full scale
0 to 20mA10μA0.05% of full scale + 3 digits24V Max± 200ppm/°C<50ppm of full scale
RangeResolutionAccuracyShunt ResistanceTemp Coefficient
0 to 200μA100nA0.05% of full scale + 3 digits10Ω± 200ppm/°C
0 to 2mA1μA0.05% of full scale + 3 digits10Ω± 200ppm/°C
0 to 20mA10μA0.05% of full scale + 3 digits10Ω± 200ppm/°C
ConnectionsMade by 4mm connectors or clamped using the wire compression feature.
PowerPP3 size, 9V battery. Approximately 28 hours life depending on the current sourced. Alternatively an optional 12V power supply can be plugged into the 2.5mm socket on the top of the unit.
ProtectionCan withstand open circuits, short circuits and reverse polarity up to 25V. Additional protection is by an internal fuse.

DimensionsH142 x W78 x D50mm
Weight0.30kg
Supplied WithLeatherette carry case, 9V PP3 battery (installed), and user manual
Optional Extras230V or 110V mains power supply. Calibration certificates traceable to NPL and UKAS.
Country of OriginUK

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