Parker ChemTec II, Installation, Operating, & Maintenance Instructions

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Select the pH AI CHANNEL to set the input channel, Channel 1 is the default
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After setting Channel 1, select the AI 1 SETTINGS
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Set the units to pH, the Sensor Range Min/Max to 4 and 20 mA (typical) and the Scaled Range
Min/Max to match the pH output of the pH Analyzer in use (0 and 14 are typical)
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Choose SET
9. Cut approx. 6-8 ft. of #16 tubing and connect it to the reagent reservoir. Route the tubing from the reservoir to
the ChemTec II, open the head by rotating the lever 180 degrees counter-clockwise, and place the tubing over
the upper set of rollers. Confirm that the tubing is under the centering springs and close the head by rotating the
lever back to its original position. Connect the remaining end to the reaction vessel.
This completes the hardware and tubing configuration.
PROGRAM EDITING AND EXECUTION
At this point, consider the parameters of the titration/maintenance process and determine how close the pH
Setpoint must be maintained and the max flow rate desired for reagent addition as the pH increases. Several
user-definable alarms may be utilized to monitor upper and lower pH limits, and reagent volume. Alarms and
Limits may also be set for Pressure in the submenu for those items in Setup Mode if those sensors are used.
If all is working as expected for an “Acid” reaction, acid is the reagent being added to bring the solution back
to a neutral Setpoint of 7.0 pH, when the pH exceeds 7.10 (Tolerance = 0.1) the ChemTec II will begin to slowly
dispense the Acid Reagent. This speed will increase linearly to the maximum Pump Rate that was set as the
Delta value is approached. It will automatically slow down as the pH returns toward 7.1 and stop when it
drops below that value. With an Endpoint Delay of 0.0, this will continue for as long as desired.
Refer to APPENDIX A for tubing dimensions chart and available flow rates based on tubing and motor size.