EXTECH INSTRUMENTS EX420 CALIBRATION and EXTECH INSTRUMENTS EX420 REPAIR
 
A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the EXTECH INSTRUMENTS EX420 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   EXTECH INSTRUMENTS EX420 (420)   Description / Specification:   Spec Sheet 
EXTECH INSTRUMENTS EX420 Autoranging MultiMeter

The Extech EX420 Averaging, autoranging DMM with large digit LCD display and temperature function. Features AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Temperature, Diode/Continuity, Duty Cycle. Type K temperature measurements. Data hold, Relative, Auto power off. Specifications. Specifications. DC Voltage Ranges: 400mV, 4V, 40V, 400V, 1000V. DC Voltage Maximum Resolution: 0.1 mV. DC Voltage Accuracy: ± (0.3% reading + 2 digits) @ 400 mV. AC Voltage Ranges: 400mV, 4V, 40V, 400V, 750V. AC Voltage Maximum Resolution: 0.1 mV. AC Voltage Accuracy: ± (1.5% reading + 15 digits) @ 400 mV 50 to 400Hz. DC Current Ranges: 400µA, 4000µA, 40mA, 400mA, 4 A, 20A. DC Current Maximum Resolution: 0.1 µA. DC Current Accuracy: ±(1.5% + 3d) @ 400µA, 4000µA, 40mA, 400mA. AC Current Ranges: 400µA, 4000µA, 40mA, 400mA, 4A, 20A. AC Current Maximum Resolution: 0.1 µA. AC Current Accuracy: ±(1.8% reading + 8 digits) @ 400µA, 4000µA, 40mA, 400mA 50 to 400Hz. Resistance Ranges: 400, 4k, 40k, 400k, 4M, 40Mohm. Resistance Maximum Resolution: 0.1 ohm. Resistance Accuracy: ± (0.8% reading + 4 digits) @ 400 ohm. Capacitance Ranges: 40 nF, 400 nF, 4 µF, 40 µF, 100 µF. Capacitance Maximum Resolution: 0.01 nF. Capacitance Accuracy: ±(5.0% reading + 7 digits) @ 40 nF. Frequency: 0.001Hz to 10MHz. Frequency Accuracy: ±(1.5% reading + 5 digits) @ 5, 50 Hz range. Duty Cycle: 0.1% to 99.9%. Duty Cycle Maximum Resolution: 0.1%. Duty Cycle Accuracy: ±(1.2% reading + 2 digits). Temperature Ranges: -4 to 1382°F (-20 to 750°C ). Temperature Maximum Resolution: 1°F/°C. Temperature Accuracy: ±(3.0% reading + 3 digits) (probe accuracy not included). Diode Test: Test current of 0.3mA typical, open circuit voltage 1.5V DC typical. Continuity Check: Audible signal will sound if the resistance is less than 150 ohm (approx.), test current <0.3mA. Display: 4000 count backlit liquid crystal.



 

Standard Calibration $70.00 *
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*This is a Web introductory price for one calibration of the EXTECH INSTRUMENTS EX420. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.


Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Average Power
Average power means that the energy transfer rate is to be averaged over many periods of the lowest frequency involved. For a CW signal, the lowest frequency and highest frequency are the same, so average power and power are the same. For an amplitude modulated wave, the power must be averaged over many periods of the modulation component of the signal as well.

Dynamic range
Dynamic range the ratio of a specified maximum level of a parameter, such as power, current, voltage or frequency, to the minimum detectable value of that parameter.

Modulation
Modulation is the process by which the characteristic of one wave (the carrier) is modified by another.

Repeatability
Repeatability is the variation in a number of repeated measured quantities when measurement conditions are changed and restored. The value corresponds to half the spread between the minimum and maximum value measured.

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