Practical Instrument Electronics 820-ELITE - Manual (Page 36)

Page 34
Source V dc
Ranges and Resolution
-20.000 to 99.999 mV, -500.00 to 999.99 mV,
0.000 to 10.250V
Accuracy ≤ ± (0.02 % of Reading + 0.01% Full Scale)
Source Current ≥ 24 mA
Sink Current > 16 mA
Output Impedance < 1 Ohm
Short Circuit Duration Infinite
Thermocouple Source
Accuracy
≤ ± (0.02 % of Reading + 0.01 mV)
Cold Junction Compensation ± (0.1°C + 0.01%/°C)
Output Impedance
< 1 Ohm
Source Current > 20 mA (drives 80 mV into 10 Ohms)
Thermocouple Read
Accuracy & Cold
Junction Compensation
Same as Thermocouple Source
Input Impedance > 1 Megohms
Open TC Threshold;
Pulse
10K Ohms; <5 µamp pulse for 300
milliseconds (nominal)
Specifications
pH Source
Range and Resolution
-414.00 to +414.00 pH
Accuracy in mV ≤ ± (0.02 % of Reading in mV + 0.1 mV)
Accuracy in pH ≤ ± 0.003 pH @ 25°C