Campbell Scientific CS547 Conductivity and Temperature Probe and A547 Interface - Manual (Page 8)

CS547 Conductivity and Temperature Probe and A547 Interface
4
AG
SE TEMP
EX TEMP
D
A
T
ALOGGER
SENSOR
EX TEMP
TEMP
COND
EX COND
EX COND
HI COND
LO COND
SHIELD
SHIELD
FIGURE 4-1. CS547 Wiring Diagram for Example Below
5. Programming
5.1 Programming Overview
Typical datalogger programs to measure the CS547 consist of four parts:
1. Measurement of EC and temperature
2. Correction of ionization errors in EC measurements
3. Correction of temperature errors in EC measurements
4. Output processing
All example programs may require modification by the user to fit the specific
application's wiring and programming needs. All example programs in this
manual are for the CR10(X) and assume that datalogger wire connections are as
follows: the LO COND lead is connected to 1L, the HI COND to 1H, the EX
COND to EX1, the EX TEMP to EX2, and the SE TEMP to SE3.
5.2 Measurement Programming.
EC: Results from Instructions 5 or 6 (chosen automatically as part of the
autoranging feature of the following program segment) are processed with
Instruction P59 to produce the resistance across the electrodes:
Input Location Labels
Definitions for the following program:
Rs Solution
resistance
Rp Resistance of leads/cable and blocking caps
Ct Solution EC with no temp. correction
C25mScm_1 EC corrected for temperature
AG
SE3
EX2
EX1
1H
1L
Clear (Shield)
Red (Temp)
Orange (Cond)
Black (Ex Cond)
Green (Ex Temp)