Campbell Scientific CR1000 Measurement and Control System - Manual (Page 279)

Section 8. Operation
279
where
Gain Error = ± (2500 * 0.0006)
= ±1.5 mV
and
Offset Error = 1.5 • 667 µV + 1 µV = 1.00 mV
Therefore,
Error = Gain Error + Offset Error
= ±1.5 mV + 1.00 µV
= ±2.50 mV
In contrast, the error for a 500‐mV input under the same constraints is
±1.30 mV. The figure Voltage Measurement Accuracy
(p. 279)
illustrates
the total error with respect to voltage measurements for the ±2500‐mV
range.
Figure 87: Voltage measurement accuracy (0° to 40°C)