NMC-PRO Installation Manual
102Page
10.5 EC/pH Calibration
Calibration of EC & PH is comprised of two steps:
• Calibration of the EC/pH Monitor Transmitter, page 102
• EC/pH Transmitter Monitor & NMC-Pro Correlation, page 104
10.5.1 Calibration of the EC/pH Monitor Transmitter
Use the following instructions when using Netafim EC/pH transmitters. When using other types of transmitters use
calibration guidelines supplied by the manufacturer and jump to EC/pH Transmitter Monitor & NMC-Pro Correlation.
EC & PH main screen
10.5.1.1 EC Calibration
• Auto Set EC (EC factory set)
• EC Soft Calibration
10.5.1.1.1 Auto Set EC (EC factory set)
The Auto set procedure initializes all the previous corrections and sets the calibration according to the factory settings.
Perform Auto set on the first run and when you replace an EC Electrode with a new one.
1. Press the MENU button and wait for the Service prompt to appear.
2. Press SELECT button several times until AUTOSET EC prompt is displayed and then press ENTER. The message
OK is displayed for a while and then the display reverts back to normal.
Note: Always perform EC Soft Calibration after the Auto set EC (EC factor set)
10.5.1.1.2 EC Soft Calibration
1. Press the MENU button and wait for the Service prompt to appear.
2. Press SELECT button several times until the CALIB(rate) EC prompt is displayed and then press ENTER.
3. Use the SELECT button to choose EC 1.4 or EC 5, according to your water value and the buffers you have, press
ENTER to confirm.
4. Insert the probe into the appropriate buffer, wait for approximately 10 seconds, and press ENTER. You will be
asked to wait for a few seconds, while the unit performs the value correction.
5. The Gain point is now set and EC 0.0 will be displayed. Hold the EC probe out in the open air and wipe it gently
with a napkin or a tissue, then press ENTER.
6. If the calibration process is completed successfully, EC Calibration OK is displayed. If it fails, EC CALIBRATION
FAIL is displayed, in this case refer to NMC-Junior Irrigation – Part 2 > EC/pH >Troubleshooting.
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