We have been designing, assembling, and calibrating Voltage References since 2007 and this latest Rev 9 version our 10V Reference is the best yet! Improved accuracy of 0.001% for a minimum of 8 months Output terminals are high quality Gold plated 5-way binding posts Gold plated circuit board Improved temperature compensation circuit provides +-2uV/F (+-0.4ppm/C) maximum temperature coefficient from 60F to 90F Front panel accessible current limited battery voltage test points Operation from included internal 9V batteries or included external 24VDC power supply Battery input can withstand -26V to +40V and external power supply input can withstand +-40V without damage Conformal coating applied to Reference chip to minimize humidity effects Reference assembly is aged for a minimum of 2000 hours before calibration General description: This 3" x 3" portable, precision 10V Voltage Reference can be used to check the calibration of your DVM or DMM.Accuracy is conservatively guaranteed to be within 0.001% after 8 months. An Analog Devices buried Zener LT1021BCN8-10 is the heart of the Reference and we apply a conformal coating to minimize the effects of ambient humidity. All temperature sensitive components LT1021, etc. Are located inside the enclosure to make the Reference insensitive to ambient air currents. A calibration certificate is included.
The Reference can either be powered by the included RayOVac Alkaline 9V batteries that are housed inside the enclosure or by the included external UL approved, linear, regulated 24VDC wall mounted power supply; this supply requires 120VAC, 60Hz input. Buried Zener references become more stable the longer they are powered-up. With the included 24V power supply it is very convenient to leave the Reference continuously powered without having to use a much more costly bench supply. A lit "BATT" LED indicates battery operation and a lit orange LED indicates external power.By unplugging the 24VDC supply, internal circuitry switches the Reference to battery operation with no interruption of power. When both batteries and external power supply are present, priority is given to the external supply. Recently improved temperature compensation keeps the temperature coefficient to less than +/- 0.4ppm/C over the range of 60ºF to 90ºF (16ºC to 32C). The temperature stability is verified by our thermal chamber slowly changing the temperature from 60ºF to 90ºF over a period of 12 hours and measuring the Reference output every 0.1ºF. This is necessary since some LT1021 devices have a very non-linear temperature coefficient and if only three temperature checks are made it is very easy to miss an unwanted voltage excursion.
This item is in the category "Business & Industrial\Test, Measurement & Inspection\Testers & Calibrators\Calibrators\Other Calibrators". The seller is "zildjianboy7" and is located in this country: US. This item can be shipped to North, South, or Latin America, all countries in Europe, Australia.