M632 and M642 are programmable real-resistance decades with far-reaching ranges and very fine resolutions. While the M642 is an industrial decade with its 0.1 Ω - 20 MΩ range (22 MΩ upgrade available) and 5 W load capacity, the M632 is 20 ppm reference instrument for calibration laboratories and flagship of Meatest's resistance calibration. Containing some of the most stable (and expensive) foil resistors available, the M632 has just 1 ppm/°C temperature coefficient. Decades can be used for AC application as well, see datasheet for typical frequency responses.
M6xx series was made to make resistance calibration as easy as it gets. Large LCD shows all related parameters including total accuracy. And there is no residual resistance or hidden absolute error so you don't have to calculate it by yourself, accuracy you see is what you get. And that's not the only thing that firmware sorts out for you. Would you like the resistance shown in temperature units? Distance? Force? RTD and user function will do this for you. Complete recalibration? Ten minutes and off you go.
Both M632 and M642 are available with optional RS232, USB, LAN, GPIB interface.
Meatest M632 & M642 Real-Resistance Decades
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