M6x2 Real-Resistance Decades

Resistance decades with ranges as wide as 14 decades. Sophisticated design and switching algorithm provides zero residual resistance, high accuracy and temperature stability for the most demanding applications

• Real resistors switched by relays
• 14-decade range, resolution from 1 μΩ
• Custom units and time sequences
• No residual resistance
• 20 ppm accuracy / 5 W load capacity
• Six different languages

M632 and M642 are programmable real-resistance decades with far-reaching ranges and very fine resolutions. While the M642 is rather 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.

Languages: English, German, Spanish, French, Russian, Czech

User comfort

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.

Connectivity

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.

Resistance

1 Ω - 1.2 MΩ, resolution from 10 uΩ
max dissipation power 0.25 W
± 20 ppm / year

Temperature

RTD ± 0.01°C / year

Resistance

100 mΩ - 20 MΩ (22 MΩ), resolution from 1 uΩ max dissipation power 5 W
± 200 ppm / year

Temperature

RTD ± 0.1°C / year

M632-V1000

precision wide range decade with and RS232

M642-V1000

industrial wide range decade with and RS232

M6xx-V2xxx

GPIB, USB and Ethernet interface extension

M642-Vx2xx

22 MΩ range extension for M642

M6xx-Vxx1x

19" rack version, height 3HE

All Meatest instruments are available with 3, 4 and 5-year extended warranties. Delivered with EU plug. Can be swapped for other types on demand.

GPIB cable

IEEE488-IEEE488 cable, 2m

RS232 adapter

RS232-USB generic adapter

RS232 cable

male-female RS232 cable, 2m