Electro-Chemical Devices (ECD) SMS22 - Manual (Page 24)

4.0 START UP
Complete each of the sections listed below (see Section 2 Installation).
1. Mounting the Analyzer
2. Wire the power and outputs
3. Plumb the sample, reagent and Drain lines
4. Install the sensors in the flowcell
4.1 POWER UP the ANALYZER
Verify:
1. The sample line is connected to the Sample Conditioning Cell or other atmospheric sample port
that has sample water flowing.
2. Reagent 1 (16% KOH) is connected to Reagent Pump 1
3. Reagent 2 (7.5% HCl) is connected to Reagent Pump2
4. The Drain Line empties to an atmospheric drain with no back pressure
The Standard Configuration is Power =ON, Calibrate/Run =RUN, Prime/Run =RUN.
PRIME the PUMPS
1. Switch the Power Switch to ON
2. Switch Prime/Run to PRIME, this powers the Sample pump, reagent pumps and opens the Drain.
The mixing pump is not active. Prime the pumps for 1 minute for each meter (3 ft) of tubing
between the analyzer and Sample point or Reagent (whichever is longest).
3. Switch Prime/Run to RUN
4. Switch the Power Switch to OFF and then back ON (this Resets the C-22 timers to 00.00.00)
The SMS-22 is now running online and it will update the 4-20 mA outputs at the end of each cycle.
Channel 1, 4-20 mA = 0-10 ppm Sulfide and Channel 2, 4-20 mA = 0-14 pH.
The Standard cycle time is configured for 6 minutes, 10 cycles per hour. See Section 3.3.5 above for the
settings for 5 cycles/hour or 2 cycles/hour.
4.2 CALIBRATION
The SMS-22 was calibrated before shipping and should not require calibration at Start Up. If Calibration
is required perform the calibrations in the following sequence, calibrate the Temperature Sensors then
the pHS10 Sensor and finally the Sulfide Ion Sensor.
4.2.1 TEMPERATURE SENSORS
Both the pH sensor and Sulfide Ion sensor have temperature sensors. They should display the same
temperature, the sample temperature.
To calibrate the sensors,
1. Switch the SMS-22 Analyzer to CALIBRATE Mode
2. Remove the sensors from the flow cell and place them in a beaker of solution.
SMS-22 Page 15