Practical-instrument-electronics 830 Manual do Utilizador descarregar pdf (Página 44)

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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

≥ 20 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

± (0.05°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

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Practical-instrument-electronics 830 Manual do Utilizador Página 44