CS547 Conductivity and Temperature Probe and A547 Interface
3
2.3 Temperature Sensor
Thermistor
Betatherm 100K6A1.
Range
0
°
C to 50
°
C.
Accuracy
Error ±0.4
°
C (See Section 8.2).
3. Installation
Rapid heating and cooling of the probe, such as leaving it
in the sun and then submersing it in a cold stream, may
cause irreparable damage.
3.1 Site Selection
The EC sensor measures the EC of water inside the stainless steel tube, so
detection of rapid changes in EC requires that the probe be flushed
continuously. This is easy to accommodate in a flowing stream by simply
orienting the sensor parallel to the direction of flow. In stilling wells and
ground wells, however, diffusion rate of ions limits the response time.
3.2 Mounting
The stainless steel housing and sensor cable are made of water impervious,
durable materials. Care should be taken, however, to mount the probe where
contact with abrasives and moving objects will be avoided. Strain on cables
can be minimized by using a split mesh strain relief sleeve on the cable, which
is recommended for cables over 100 ft. The strain relief sleeve is available
from Campbell Scientific as part number 7421.
The A547 is usually mounted in the datalogger enclosure.
4. Wiring
The excitation channel used for EC must be separate
from the one used for temperature or measurement
errors will result.
CAUTION
WARNING
