ECD FCA-22, Instruction Manual

Page: 8 / 24

FCA ‐ 22 Instruction Manual
Page 8
Start Up
Supply sample flow to the system. Adjust the sample flow until the water is overflowing into the central
overflow tube. At higher flow rates the excess water will overflow down the drain. A minimum flow of
10 gal/min is required to maintain the overflow condition. Verify the sample flow is passing through
both flow cells and returning to the drain. The Chlorine Sensor requires 1 ‐ 1 ½ hours of polarization by
the instrument before accurate measurements can be made. Allow the system to run at least 1 hour
before proceeding to the Chlorine Sensor calibration below.
Calibration
Temperature Calibration
The Temperature sensor inside the PHS10 sensor was calibrated at the factory before shipping. Verify
the displayed temperature agrees with the actual temperature. If the value deviates by more than 2° C
then adjust the Temperature Trim in the Configuration & Trim Menu to the correct value. For a detailed
description see Temperature Calibration in the C ‐ 22 manual.
Temperature Calibration Screen Shots
#1 Enter the Configure/
Trim Menu
Scroll to the Configure
Menu using the MENU
SELECT key and enter the
Menu by simultaneously
pressing both Horizontal
CALIBRATE keys.
#2 Scroll through the
Passwords Screen
Press the MENU SELECT
down Key four times to
the next screen.
#3 Scroll through the
Relay Assign Screen
Press the MENU SELECT
down Key four times to
the next screen.
#4 Choose °C/°F & temp
cal
Select the Menu by
Simultaneously pressing
both Horizontal
CALIBRATE keys.
#5 Choose the Trim °C
Menu
Select the Menu by
Simultaneously pressing
both Horizontal
CALIBRATE keys.
#6 Adjust the Trim to
calibrate
the reading
Using the vertical
CALIBRATE keys adjust
the trim to change the
Displayed temperature