Calibratore Multifunzione M-140 - Barletta Apparecchi Scientifici

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Multifunction calibrator / tester M-140

Calibratore Multifunzione M-140

Multifunction calibrator M-140 is a calibrator - tester, determined mainly as standard of electric quantities in calibration laboratories. It can be used for calibration of electrical quantity meters from the field of voltage, current, resistance, capacity and frequency. Installed harmonic and non-harmonic shape signals as well make it possible to test parameters of the meters by a signal with various crest factor. Frequency modes enable to set frequency, amplitude and duty ratio of the output signal. They are suitable for basic calibration of oscilloscopes. The calibrator is equipped with possibility to measure temperature with TC and RTD temperature sensors. Built-in multimeter can be used independently or in simultaneous operation with source part of the calibrator together. Testing of transducers of various types, regulators and evaluating units can be perform with it without necessity to use any other measuring instrument.


Basic parameters
Basic function of the calibrator is generating of the calibrated DC/AC voltage in the range from 0 µV to 1000 V and DC/AC current in the range from 0 to 20 A . Using a 50-turn coil the current range can be extended from 50 µA to 500 A. The best accuracy of the calibrator on DC voltage ranges is 0.0035%, on AC voltage ranges 0.03%, on DC current ranges 0.013% and on AC current ranges 0.055%. Maximum frequency range is from 20 Hz to 50 kHz for harmonic output waveform. The calibrator is equipped with the function of generation the periodic non-harmonic signals with the defined crest factor. Thus it makes possible to test sensitivity of multimeters to distorted signals. Next function of the calibrator is simulation of resistance and capacity. With the calibrator, the resistance in range from 0 ? to 50 ? and capacity from 1 nF to 50 µF can be simulated with the enough precision for calibration of common used hand-held multimeters. The basic accuracy of the resistance ranges is 0.03%, of the capacity ranges it is 0.5%. The resistance may be used both with DC and AC signals up to 1 kHz.
The frequency function of the calibrator makes it possible to generate a square wave signal with adjustable and calibrated duty ratio, frequency and amplitude in range from 1 mV to 10 V in the frequency band up to 10 kHz. In the mode HF the square wave signal up to 20 MHz with a very low risetime can be generated. The frequency functions are suitable for the calibrations of corresponding frequency ranges of the multimeters, and for calibration of the channel sensitivities and time bases of the oscilloscopes as well.
For calibrations of DC and one-phase AC power-meters and energy meters, the power mode is determined. Output voltage can be set up to 240 V and output current up to 10 A with the power factor in range from -1 to +1 in the frequency band from 20 Hz to 400 Hz. Current capability of the voltage output is 30 mA. It allows to calibrate also analogue power-meters which has usually higher consumption. For calibrations of the thermometers and temperature regulators, the function of simulation of temperature sensors is determined. Calibrator is able to simulate all common used Pt and Ni resistance sensors and TC sensors of the R, S, B, J, T, E, K and N types as well. Compensation of the TC cold junction is made either by entering value from the keyboard, or automatically by measuring the ambient temperature with Pt-100 sensor. The precision of the simulated resistance and TC sensors depends on set value and type of the sensor. For resistance sensors uncertainty band is in the range from 0.04 °C to 0.5 °C, for TC sensors from 0.4°C to 4.0 °C.

Build-in multimeter
Internal multimeter with basic ranges 20 mA, 200 mV, 10 V and 2 k? is standard part of the calibrator. With accuracy of 0.01% it enables to measure output signals of various types of transducers. With external TC or resistance temperature sensor temperature can be scan and similarly, with external strange gauge sensor pressure, torsion, strength, etc. can be measured and displayed.

Calibrator - Tester
Calibrator can be used in simultaneous mode, i.e. selected output signal is generated and the response of the device under test is measured at the same time by internal multimeter. Programmable capability of the calibrator enable to set 10 steps of the testing procedure and. The testing can run automatically and after it is completed an information of the PASS/FAIL type is displayed. With the testing function an isolated relay contacts are coupled, which makes it possible to control other equipment.

User comfort
M-140 Calibrator is equipped with a number of other functions which make its use easier. Among them belong possibility to set relative deviations from the actual value of the selected output signal, displaying of the output signal uncertainty, internal calibration procedure and others. Concept of the calibrator's control and indication uses a large area luminescence display on which all necessary information is concentrated. The control is perform by selection from the menu. Moreover, frequently used functions have firmly assigned keys with direct control. Normally, the calibrator is equipped with the GPIB bus and with the RS-232 serial port making it possible to be controlled by personal computer.
Without any problems, the calibrator can be included into the MEATEST´s WinQbase software calibration system.

M-140 Specifications

DC voltage

range % of value + % of range
0 µV - 20 mV 0.05 + 0.0 + 10 µV
20 mV - 200 mV 0.01 + 0.0 + 10 µV
200 mV - 2 V 0.003 + 0.0008
2 V - 20 V 0.003 + 0.0005
20 V - 240 V 0.003 + 0.0005
240 V - 1000 V 0.005 + 0.0005

AC voltage

range % of value
+ % of range
% of value
+ % of range
  20 Hz - 10 kHz 10 kHz - 50 kHz
1 mV - 20 mV 0.10 + 0.0 + 5 µV 0.20 + 0.10 + 5 µV
20mV - 200mV 0.05 + 0.0 + 20 µV 0.15 + 0.05 + 20 µV
200 mV - 2 V 0.025 + 0.005 0.05 + 0.01
2 V - 20 V 0.025 + 0.005 0.05 + 0.03
20 V - 240 V 0.025 + 0.010 - -
240 V - 1000 V 0.03 + 0.02 * - -

* valid for f < 1000 Hz

DC current

range % of value + % of range
1 µA - 200 µA 0.05 + 0.010
200 µA - 2 mA 0.02 + 0.005
2 mA - 20 mA 0.01 + 0.003
20 mA - 200 mA 0.01 + 0.003
200 mA - 2 A 0.015 + 0.005
2 A - 20 A 0.02 + 0.010

AC current

range % of value
+ % of range
% of value
+ % of range
  20 Hz - 1 kHz 1 kHz - 5 kHz
1 µA - 200 µA 0.15 + 0.0 + 20 nA 0.30 + 0.10 + 20 nA
200 µA - 2 mA 0.07 + 0.01 0.20 + 0.05
2 mA - 20 mA 0.05 + 0.005 0.20 + 0.05
20 mA - 200 mA 0.05 + 0.005 0.20 + 0.05
200 mA - 2 A 0.05 + 0.005 0.30 + 0.05
2 A - 20 A 0.10 + 0.03 - -

When option 130-50 Current coil is used, add uncertainty 0.3 % of the set current to the value specified in the above table.
Output current is multiplied by factor 50.

Resistance

range % of value + % of range
0 Ohm - 100 Ohm 0.03 + 10 mOhm
100 Ohm - 400 Ohm 0.015
400 Ohm - 2 kOhm 0.015
2 kOhm - 10 kOhm 0.015
10 kOhm - 40 kOhm 0.015
40 kOhm - 200 kOhm 0.015
200 kOhm - 1 MOhm 0.03
1 MOhm - 4 MOhm 0.03
4 MOhm - 20 MOhm 0.05
20 MOhm - 50 MOhm 0.2

Maximum allowed voltage on the load is 8 Vpk.

Capacitance

range % of value + % of range
900 pF - 2.5 nF 0.5 + 15 pF
2.5 nF - 10 nF 0.5
10 nF - 50 nF 0.5
50 nF - 250 nF 0.5
250 nF - 1 µF 0.5
1 µF - 3.5 µF 1.0
3.5 µF - 5 µF 1.0
5 µF - 10 µF 1.5
10 µF - 50 µF 2.0

Maximum allowed voltage on the load is 8 Vpk.

Frequency

type PWM (pos, neg, sym) HF *
range 0.1 Hz - 100 kHz 0.1 Hz - 20 MHz
frequency unc. [%] 0.005 0.005
amplitude 1 mV - 10 V 2 V
amplitude unc. [%] 0.1 10
ratio 0.00 - 1.00 - -
ratio unc. [%] 0.05 - -

* Rise time < 5 ns

DC power, energy

quantity range % of value
+ % of range
voltage 200 mV - 240 V viz. tabulka napìtí
current 2 mA - 10 A 0.05 + 0.01

AC power, energy

quantity range % of value
+ % of range
voltage 200 mV - 240 V viz. tabulka napìtí
current 2 mA - 10 A 0.05 + 0.01
frequency 40 Hz - 400 Hz 0.005
power factor -1 - +1 0.005 - 0.0005
phase 0 - 360 ° 0.15 - 0.25

Setting time in energy mode 10 s - 1999 s.
Uncertainty of AC power depends on set value of voltage, current, phase. The best uncertainty is 0.08 %. Uncertainty in energy mode depends on set value of voltage, current, phase and time. The best uncertainty is 0.09 %.

Resistance temperature sensor simulation

types Pt 1.385, Pt 1.392, Ni
range of R0 20 Ohm - 2 kOhm
range of temperature -200 °C - 850 °C
temperature unc. 0.04 °C - 0.5 °C
temperature scale ITS 90, PTS 68

Termocouples simulation

types R, S, B, J, T, E, K, N
range of temperature -250 °C - 1820 °C
temperature unc. 0.4 °C - 4.0 °C
temperature scale ITS 90, PTS 68

Multimeter

quantity range uncertainty
VDC (DC voltage) 0 - ± 12 V 0.01 % + 100 µV
mVDC (DC voltage) 0 - ± 2000 mV 0.01 % + 10 µV
mADC (DC current) 0 - ± 25 mA 0.02 % + 1 µA
FREQ (Frequency) 1 Hz - 15 kHz 0.005 %
R4W (Resistance) 0 - 2 kOhm 0.02 % + 100 mOhm
TRTD (RTD sensors) -150 - +600 °C 0.1 °C
TTC (TC sensors) -250 - +1820 °C 0.4 - 4 °C
SGS (strain gauge) * depends on sensor 0.01 % + 10 µV
+ sensor unc.

*
Supplying voltage 2 to 10 V DC,
Max. current 40 mA
Input resistance > 100 MOhm
Sensitivity 0.5 - 100 mV/V
Displayed unit settable

Accessories (included)

Power line cable 1 pc
Operation manual 1 pc
Test report 1 pc
Spare fuse 1 pc
Test cable 2 pc

Extra ordered accessories

Option 130-50 Current coil 50 turns
Option 140-01 Cable adapter for multimeters
Option 140-02 Set of cables
Option 140-41 Cable adapter for simultaneous applications
Option 10 Test cable 20A/1000V (black)
Option 11 Test cable 20A/1000V (red)
Option 20 Test cable BNC/BNC 1m
Option 30 Test cable BNC/banana 1m
Option 40 Test cable for build-in multimeter 2 banana
Option 50 Test cable for build-in multimeter 4 banana
Cable GPIB IEEE488/IEEE488, 2m
Cable RS232 RS232, 2m
WinQbase SW for meter calibrating
MEACA SW module for multimeters




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