Real resistors switched by relays Resistance range 16.0000 Ω – 400 kΩ Accuracy from 20 ppm / 0.01 ºC Custom units and time sequences No residual resistance Six language packs M631 is 20 ppm real-resistance decade box designed specifically for RTD sensors' simulation in calibration laboratories. Core function is still resistance so you can as well calibrate ohmmeters and other resistance based meters easily. Containing some of the most stable (and expensive) foil resistors available, the M631 has temperature coefficient starting at 1 ppm/°C and can be used for AC applications as well, typical frequency responses are listed below. 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. All decades' functions can be remotely controlled via RS232, USB, LAN or GPIB interface. This way you can introduce calibration/test stage directly into production line of any resistance based sensor and reduce time required for final quality tests dramatically. Zelezna 3 | 619 00 Brno | Czech Republic | +420 543 250 886 | [email protected] | www.meates

SPECIFICATION Specifications below describe 1-year absolute accuracy of this product including long-term stability, linearity, load and line regulation and reference standard measurement uncertainty as well as ambient conditions within specified limits. Range summary Maximum load ratings Reaction time Ranges, resolution, 1 year accuracy AC-DC difference (typical, absolute value) Platinum scales Other scales Reference temperature Operating temperature Storage temperature Temperature coefficient Power supply GENERAL DATA English, German, French