Fast Measurements; Measurement Speed - Campbell GRANITE VOLT Series Product Manual

FIGURE 10-1. Wiring panel thermistor locations on VOLT 108 (top) and VOLT 116 (bottom)

10.4 Fast measurements

Follow the steps below when designing fast-measurement networks:
1. Work out the time the VOLT 100 series will take to make all of the measurements (See

Measurement speed

2. Calculate the CPI bit rate necessary to keep up with the sum of data generated by all
devices (CPI network bit rate
3. Determine if the physical layout of your network will allow for the calculated CPI bit rate
(See Table 10-2
See Calculating network restrictions
10.4.1 Measurement speed
Use the equations in
measurements at the speed required. Compare that speed with the scan rate options for the data
logger to determine if the VOLT 100 series measurements can be done within the main scan or if
they need to be performed in a sub-scan or burst. The Sample Rate refers to the rate at which the
VOLT 100 series makes measurements when the Reps parameter is greater than 1.
(p. 33)).
(p. 36)).
(p. 36)).
(p. 51) for complete examples.
Table 10-1 (p. 34) to ensure that the VOLT 100 series is able to make
VOLT 100 series 33