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1048 Voltage/Current/Loop Calibrator

1048 Voltage/Current/Loop Calibrator
  • 1048

Features

  • Source/measure current & voltage
  • 3 Source ranges to 22mA or 22V
  • 3 Measure ranges to 70mA or 50V
  • Transmitter simulator/sink
  • Output steps and ramps
  • Fine adjustment (inching)
  • Accuracy 0.02% of span

1048 Images

  • A portable instrument that operates as a current and voltage source and a multi-purpose loop calibrator. High performance and simple operation make it suitable for R&D, service, process control engineers, and calibration technicians. As a versatile handheld calibrator, the source and measure capabilities with 0.02% accuracy mean the 1048 is a compact solution for most simulation and test applications.

    The 1048 combines the advantages of digital accuracy with analog control. Based on the popular functionality of the 1044 calibrator, the 1048 offers higher voltage and current across the three ranges, and improved accuracy. The additional features of transmitter simulation, sink loop control, output stepping and ramping, and incremental fine adjustment make the instrument ideal for use in the process industry.

    The large, easy to read 4.5 digit 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 22V and current up to 22mA may be generated in three ranges. When in current source mode the 1048 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 display.

    The step, ramp, and inching functions are simple operation, with no key press menus to learn, just switches and buttons. A multi-turn potentiometer controls the output, with up/down incrementing buttons for fine control. The output can be reversed (+/-) and zeroed at the flick of a switch. The automatic ramp function enables the user to choose either 5, 11, or 21 point calibration. Manual operation can be quickly restored by a single push of a button.

    The 1048 is housed in a pocket sized ABS case, with carry case supplied as standard. 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 is to simulate a transducer or measure the current flow in a transducer loop. The 1048 can beused to check a 4 to 20mA system in either source or measure modes of operation, with the 24V compliance voltage powering the loop when current source mode is selected. In the source mode, the 1048 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 1048 may be used in the same way as a DMM, checking DC voltages and current over 3 ranges with excellent resolution and accuracy.

  • Technical Specifications

    Voltage Source
    Range Resolution Accuracy Output Current Temp Coefficient

    0 to 220mV

    10μV, 100μV above 0.2V

    0.05% of full scale

    20mA

    ± 6ppm/°C

    0 to 2.2V

    100μV, 1mV above 2V

    0.02% of full scale

    20mA

    ± 6ppm/°C

    0 to 22V

    1mV, 10mV above 20V

    0.02% of full scale

    20mA

    ± 6ppm/°C

    Voltage Measure
    Range Resolution Accuracy Measure Load Temp Coefficient

    0 to 220mV

    10μV, 100μV above 0.2V

    0.05% of fs ± 1 digit

    1MΩ

    ± 3ppm/°C

    0 to 2.2V

    100μV, 1mV above 2V

    0.02% of fs ± 1 digit

    1MΩ

    ± 3ppm/°C

    0 to 22V 1mV, 10mV above 20V 0.02% of fs ± 1 digit 10MΩ ± 3ppm/°C
    Current Source
    Range Resolution Accuracy Output Voltage Temp Coefficient

    0 to 220μA

    10nA, 0.1μA above 200mA

    0.05% of full scale

    24V Max

    ± 12ppm/°C

    0 to 2.2mA

    0.1μA, 1μA above 2mA

    0.02% of full scale

    24V Max

    ± 12ppm/°C

    0 to 22mA

    1μA, 10μA above 20mA

    0.02% of full scale

    24V Max

    ± 12ppm/°C

    Current Measure
    Range Resolution Accuracy Input Load Temp Coefficient

    0 to 220μA

    10nA, 0.1μA above 200mA

    0.05% of fs ± 1 digit

    1kΩ

    ± 8ppm/°C

    0 to 2.2mA

    0.1μA, 1μA above 2mA

    0.02% of fs ± 1 digit

    110Ω

    ± 8ppm/°C

    0 to 22mA

    1μA, 10μA above 20mA

    0.02% of fs ± 1 digit

    16Ω

    ± 8ppm/°C

    SINK (TX SIM) 2 wire transmitter simulation: External excitation voltage, 3V min, 50V max. The current sink levels are adjustable, with accuracies as in the 3 source ranges shown above. Note: Accuracies in all measure modes are +/-1 digit.

    Output Steps

    5 fixed 4mA steps for current output 4, 8, 12, 16 & 20mA
    11 fixed 1V steps for voltage output 0,1,2...10V
    21 fixed steps 1V/1mA for V & I output 0,1,2...20
    Stepping can be done manually or automatically (Autostep). Stepping speed is adjustable (1-9 sec/step).
    Dwell time (top and bottom) is one step period. In step mode the accuracy is limited to 0.05% of span +/- 1 digit.

    Output Ramp

    Current Ramp 4 to 20, or 0 to 20 on all ranges.
    Voltage Ramp 0 to 10, or 0 to 20 on all ranges.
    Ramp time 7 seconds. Dwell (top/bottom) 5 seconds. Manual restart. Ramp operation is also available in Sink (TX SIM).

    Output Adjustment A ten turn potentiometer for quick setting, with fine adjust using up/down increment buttons.
    Connections Made by 4mm connectors or clamped using the wire compression feature.
    Power PP3 size, 9V battery (supplied). Approximately 20 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.

    Protection

    Can withstand open circuits, short circuits and reverse polarity up to 25V. Additional protection is by an internal fuse.


    General Specifications

    Dimensions:

    H142 x W78 x D50mm

    Weight

    0.30kg

    Operating temperature -10 to 50°C. Storage temperature -30 to 70°C.
    Operating humidity 0 to 90% non-condensing at 25°C
    Supplied With Leatherette carry case, 9V PP3 battery (installed), and user manual.

    Optional Extras

    230V or 110V Mains Power Supply.
    Calibration Certificates traceable to NPL and UKAS.

    Country of Origin UK
  • Models

    1048

    Voltage/Current/Loop Calibrator

    Options
    7643 230V Mains Power Supply
    7652 110V Mains Power Supply

    C176

    Factory Calibration Certificate (NPL traceable)

    C138 UKAS Calibration Certificate (ISO 17025)
  • PDF Downloads
    File Name File Size Language

    1048 Data Sheet

    265kB

    EN

    1048 User Manual

    558kB

    EN

  • Request for Quotation

    1048 Voltage/Current/Loop Calibrator

    Product Options
    1.20

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