Campbell CR800 Series, Operator'S Manual, Page: 357 / 598

Section 8. Operation
357
FIGURE 82: Input voltage rise and transient decay
CRBasic Measurement Settling Times
SettlingTime
Argument
Integ
Argument
Resultant
Settling Time
1
0 250
450 µs
0 _50Hz
3 ms
0 _60Hz
3 ms
integer ≥
100
integer
μs entered in
SettlingTime
argument
1
450 µs is the minimum settling time required to meet CR800 resolution
specifications.
Settling Errors
When sensors require long lead lengths, use the following general practices to
minimize settling errors:
• Do not use wire with PVC-insulated conductors. PVC has a high
dielectric constant, which extends input settling time.
• Where possible, run excitation leads and signal leads in separate shields
to minimize transients.
• When measurement speed is not a prime consideration, additional time
can be used to ensure ample settling time. The settling time required
can be measured with the CR800.
• In difficult cases, settling error can be measured as described in
Measuring Settling Time
(p. 320).