Campbell CS526 Instruction Manual - 3. Initial Inspection
CS526 ISFET pH Probe
3. Initial Inspection
Upon receipt of the CS526, inspect the packaging and contents for damage.
File damage claims with the shipping company.
The model number and cable length are printed on a label at the connection end
of the cable. Check this information against the shipping documents to ensure
the correct product and cable length are received.
4. Quickstart
For complete installation, programming, and calibration information, see
Sections 7 through 9.
The CS526 is shipped dry. Before the probe can be calibrated, it must be
soaked in 7-pH buffer solution for 15 minutes. Follow the calibration
procedure outlined in Appendix A, Calibration.
Unlike many glass-bulb type pH sensors, the CS526 ISFET pH probe can be
installed without regard to orientation. Connect the CS526 to the datalogger
according to the following table. Be sure to connect Red to the 5V channel.
Wire Color
Datalogger Connection
Red (Caution! 5 Vdc max!)
5V
Black
G
White
Control Port (Tx)
Green
Control Port (Rx)
Clear
G
Program the datalogger as follows.
'CR1000 Series Datalogger
'Declare variable for digital pH measurement
Public pHCount
'Declare variables for serial input from sensor
Dim rawstring As String * 20, pHDigit(2)
'Main Program
BeginProg
'Set up datalogger port for serial communication
SerialOpen ( Com1,2400,16,0,41)
'Establish program scan rate of 60 seconds
Scan
(60,Sec,0,0)
'Send get data command to CS526
SerialOut
(Com1,"1M1!"&CHR(13),"",0,0)
'Set up COM1 to receive incoming serial data.
'Set timeout to maximum 200 mS
SerialIn
(rawstring,Com1,20,0,20)
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