☞ The precision calibrator 7400-2 is mainly used for the calibration of digital thermometers, controllers, transducers, continuous line recorders etc. With its practice oriented programming functions it allows for an easy setup of an automatic calibration and test bench.
Technical Features: ● Selection of the required physical measurable variable via keypad and alphanumeric display. Display of the output text is available in German or English. ● Direct input of the calibration value in °C for calibration of temperature measuring instruments, which use thermocouples or Pt100 sensors. Calculation of the corresponding voltage or resistance value through the calibrator and output to the device under test. By a simple switching an immediate indication of the values is shown in the display in mV or ohm. ● Optionally, also available with automatic cold junction compensation for immediate consideration of the cold junction temperature during output of the thermocouples. ● Easy handling with further functions, such as the step mode for programming user-defined output values or operation of the device via RS232 interface (optional IEEE 488). ● Standard version is equipped for use as a sensor for voltage, current and thermocouples and includes a RS232 interface. Optionally extendible to resistance and frequency simulation, IEEE 488 interface, as well as including an additional thermocouple input with automatic cold junction compensation.
Ordering Information Calibrator
KO74002
Calibrator 7400-2 including RS232 interface, Ranges: DC voltage ±11.000 V, ± 100.000mV, DC current ±100.000 mA, 9 thermocouple types
Options
OO7400V OO7400P OO7400F OO7400I
Cold junction compensation Pt100 simulation Frequency simulation Interface IEEE 488
Accessories
ZO7400MK2 ZO7400MK4
Measuring cable 1.2m long for mV, 2-wire with banana connectors Measuring cable 1.2m long for mV/Pt100, 4-wire with banana connectors
General Technical Specifications
Display:
7 x 5 dot matrix display, height of digits 10mm
Nominal temperature:
22°C ± 2K
Operating temperature:
0°C … +40°C
Storage temperature:
-20°C … +50°C
Power supply:
230V/50Hz
Housing:
complete metal housing 19" desktop version
Dimensions:
300 x 240 x 130mm, (L x W x H)
Weight:
approx. 5kg
Output Ranges
Ranges of Voltage Source
Resolution
Ri
TC
Zero Point Error
Accuracy
±0.000 to ±100.000 mV ±0.000 to ±11.000 V
1 μV 1 mV
1 Ω 100 Ω
< 20 ppm/K < 20 ppm/K
< 2 μV < 2 mV
±0.01% of m.v., ±5μV ±1 digit ±0.08% of m.v., ±1mV ±1 digit
Range Current Source
Resolution
TC
Zero Point Error
Accuracy
±0.000 to ±100.000 mA
1 μA
< 25 ppm/K
< 2 μA
±0.015% of m.v., ±5μA ±1 digit
Thermocouple Simulation
Model
Standard
Range
Linearisation Tolerance
Type K (Ni-CrNi) Type N (Nicrosil-Nisil) Type J (Fe-CuNi) Type L (Fe-CuNi) Type T (Cu-CuNi) Type U (Cu-CuNi) Type S (Pt10%-RhPt) Type R (Pt13%-RhPt) Type B (Pt18%-RhPt)
DIN IEC 584 DIN IEC 584 DIN IEC 584 DIN 43710 DIN IEC 584 DIN 43710 DIN IEC 584 DIN IEC 584 DIN IEC 584
