Metrix CX 1651 User Manual

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15. BASIC INFORMATION
CX 1651 Multifunction Calibrator is a multifunction calibrator-tester, to be used primarily as a standard
for calibration laboratories. It can be used for calibration of any measuring instrument which measures voltage,
current, resistance, capacitance and frequency. It generates fixed non-harmonic signals to allow calibration
of measuring instruments using signals with non-zero harmonic distortion. Frequency, amplitude and duty
cycle of output signal can be adjusted. CX 1651 Multifunction Calibrator is also suitable for basic calibration
of oscilloscopes.
The calibrator includes a function which simulates resistance and thermocouple temperature sensors
and a built-in multimeter, which can be used simultaneously. Transducers of various types, regulators and
sensing units can be therefore checked without the need for additional measuring instruments.
Programmable functions of the calibrator, when used as a tester, include programming of a 10-step testing
procedure, which completes automatically and displays a PASS/FAIL information in the end. This feature is
linked to an independent relay output, which allows the control of other equipment.
Basic features of the calibrator include: generation of calibrated DC and AC voltage in the range of 0
µV to 1000 V, DC and AC current in the range of 0 µA to 20 A (50 µA to 1000 A when using a 50-turn coil).
Maximum precision of the calibrator is 0.0035 % for DC voltage, 0.03 % for AC voltage, 0.013 % for DC current
and 0.055 % for AC current. Maximum frequency range is 20 Hz to 50 kHz. The calibrator can generate periodic
non-harmonic signal with defined duty cycle. This facilitates especially the checks of multimeters and their
accuracy when measuring non-harmonic DC signals.
The calibrator can also simulate a resistance or capacitance. Resistance range is 0 Ω to 50 MΩ;
capacitance range is 1 nF to 50 µF, the accuracy suits the calibration of common multimeters. Basic accuracy
of resistance ranges is 0.03 %. Basic accuracy of capacitance ranges is 0.5 %. The resistance can be used
with AC signals up to 300 Hz to 1 kHz, depending on set-up value.
Frequency ranges of the calibrator can generate a squarewave signal with definable and calibrated
duty cycle and amplitude in the 1 mV to 10 V range and 0 to 10 kHz frequency range. Moreover, squarewave
signal with very steep rising edge can be generated up to 20 MHz. Frequency ranges can be used to calibrate
the corresponding frequency ranges of multimeters, as well as to calibrate the input sensitivity and time bases
of oscilloscopes.
Powermeter mode can be used to calibrate DC and AC single phase powermeters and energy meters.
Voltage range is up to 240 V and current range is up to 10 A, power factor range is -1 to +1 and the resolution
is 1 % in the 40 Hz to 400 Hz frequency range. The voltage output can supply loads up to 30 mA, which allows
the calibration of mechanical powermeters.
Simulation of temperature sensors is yet another feature which can be used to calibrate thermometers
and heat sensing units. The calibrator allows the simulation of all common Pt and Ni resistance sensors and
R, S, B, J, T, E, K, N type thermocouples. Compensation of cold junction of thermocouple is achieved by
entering the respective temperature using the calibrator’s keyboard. The accuracy of simulated temperature
sensors depends on the value and type of sensor and ranges from 0.04
o
C to 0.5
o
C for resistance sensors
and from 0.4
o
C to 4.3
o
C for thermocouples.
Internal multimeter with 20 mA, 20 mV, 200 mV and 10 V basic ranges and 0.01 % accuracy can be
used to measure normalized signals coming from transducers, external thermocouples or resistance sensors
or to measure pressure and force using strain gauge sensors.
The calibrator includes many other features which facilitate easy use. For example relative deviation from set
value of the output, currently displayed uncertainty of the output signal, calibration and testing procedures etc.
The concept of calibrator control and indication of its status is based on flat luminiscent display, which provides
all necessary information. The calibrator is controlled by opening menus on the display and selection from
menus. Frequently used functions are assigned direct-control keys. The calibrator comes with standard GPIB
bus and RS-232 serial line, which allow the calibrator to be controlled from a PC.
The calibrator can easily fit within calibration systems featuring MBASE/WinQbase software support.

Metrix CX 1651 Specifications

General

Brand	Metrix
Model	CX 1651
Category	Test Equipment
Language	English