M632 Precision Resistance Decade0 pages

M632

Precision Resistance Decade

Resistance range 1.00000 – 1.20000 M
Resistance accuracy +/- 30 ppm
Temperature coefficient < 1ppm/C
Operating voltage 200 V
Simulation of RTD temperature sensors
Pt simulation accuracy +/- 0.01 C
User defined curves (conversion tables)
RS232 (optionally USB, IEEE488, LAN)

Model M632 is a precise resistance decade box with range from 1 to 1.2 M. Basic accuracy is 0.003 %. Best
resolution at the lowest range is 10 . Decade contains stable foil resistors with low temperature coefficient
switched by low thermal voltage relays. Built-in software contains function of RTD temperature sensor simulation
with parameters according to IEC (DIN) or US standards, temperature setting in degree of Celsius or Fahrenheit.
Instrument can be controlled via RS232, USB, LAN or GPIB interface.
M632 is sophisticated instrument with its own recalibration procedure. The procedure enables to correct any
deviation in resistance without any mechanical adjusting.
Decade box is designed for checking parameters of resistance meters, regulators and process meters that use
external resistance sensors for non-electric quantity measuring.

M632 Resistance accuracy

M632 Pt simulation accuracy

Range / Resolution

Accuracy

1.000 00 - 2.000 00
2.000 1 - 20.000 0

Accuracy
Pt100 … Pt10000

Temperature
-200.000…0.000 C

0.002 % + 2 m

0.01 C

0.003 %

2.000 1 k - 20.000 0 k

0.015 C
0.03 C

500.001…850.000 C

200.01 - 2000.00

0.001…200.000 C
200.001…500.000 C

20.001 - 200.000

0.04 C

20.001 k - 200.000 k
0.005 %

200.01 k - 1200.00 k
M632 Typical frequency response
R
100 Hz
1 0.00 %

AC/DC difference
1 kHz
10 kHz 100 kHz
0.00 %
0.09 %
2.5 %

100 Hz
0.012 °

Phase shift
1 kHz
10 kHz
0.13 °
1.2 °

10

0.00 %

0.00 %

100

0.00 %

1 k

0.00 %

10 k

100 kHz
11 °

0.01 %

0.09 %

-0.001 °

0.012 °

0.11 °

1.0 °

0.00 %

0.00 %

-0.02 %

-0.002 °

-0.006 °

-0.072 °

-0.76 °

0.00 %

-0.03 %

-1.5 %

-0.011 °

-0.090 °

-0.90 °

-9.0 °

0.00 %

-0.01 %

-0.49 %

-33 %

-0.063 °

-0.61 °

-5.9 °

-49 °

100 k -0.04 %

-0.87 %

-36 %

-92 %

-0.71 °

-6.9 °

-50 °

-85 °

1000 k -1.04 %

-38 %

-92 %

-7.2 °

-50 °

-84 °

MEATEST, spol.s r.o., Zelezna 3, CZ – 619 00 Brno, Czech Republic | tel. +420 543 250 886 | www.meatest.com

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