User`s manual

6222 User’s Manual Specifications 8-1
Specifications – 6222 8
The following specifications are typical for the temperature range -40 to 50°C, unless otherwise noted.
Input Characteristics
Number of channels ............................................................ 12 thermocouple channels
3 internal cold-junction compensation channels
ADC resolution ................................................................... 24 bits
Type of ADC ..................................................................... Delta-Sigma
Voltage measurement range ............................................... ±80mV
Channel-to-COM ......................................................... ±1.5V
Common-to-earth ground ............................................ ±250V
Common-mode rejection ratio (0 to 60 Hz)
Channel-to-COM ......................................................... 95dB
Common-to-earth ground ............................................ >170dB
Temperature measurement ranges ..................................... Works over ranges defined by NIST for
Cold-junction compensation accuracy
1
0 to 50°C ..................................................................... 0.6°C (1.1°F) typ, 1.3°C (2.3°F) max
-40 to 50°C ................................................................. 1.7°C (3.1°F) max
Data rate (fs) ....................................................................... 2 S/s
Multiple device, channel sync skew
2
.................................. 1 Sample Period
Input bandwidth (-3dB) ...................................................... 15Hz
Noise rejection ................................................................... 85dB min at 50/60Hz
Overvoltage protection ...................................................... ±30V between any input and common
Differential input impedance .............................................. 20M
Input current ....................................................................... 50nA
Input noise .......................................................................... 1µV
rms
Gain error .......................................................................... 0.05% max at 25°C,
0.06% typ at -40 to 50°C,
0.1% max at -40 to 50°C
Offset error
1
........................................................................ 15µV typ, 20µV max
Gain error from source impedance ..................................... 0.05ppm per source impedance due to input
impedance
Offset error from source impedance ................................... 0.05µV typ, 0.07µV max per source impedance
due to input current
Power
Power consumption ............................................................ 4.1 W max
Power jack .......................................................................... Barrel type: 5.5 mm O.D.; 2.1 mm I.D.
Physical Characteristics
Weight ............................................................................... 1.22 Kg (2.7 lb)
Dimensions ........................................................................ 276.9mm W x 169.8mm D x 30.5mm H
(10.9” W x 6.685” D x 1.2”H)
1
Accuracy specifications are only valid when using provided connectors and properly installed backshells.