Emerson | 3200 | Manual - Southeastern Automation

Instruction Manual
51A-3200HP/rev.C
June 2008
Model 3200 HP
High Purity Water pH Sensor
with pHaser Flowing Junction
TM
For additional information, please refer to the Instruction Manuals CD shipped with this
product, or visit our website at www.emersonprocess.com/raihome/liquid/.
SPECIFICATIONS
Sensor Type: 3200HP
Part Number: 3200HP-01, -02, -03, HPO and 3200HP-OEM, -OEM-01, -OEM-02, -OEM-03
Accuracy: ±0.05 pH
Noise: < 0.02pH
Drift: < 0.05 pH per week
Conductivity Range: > 0.4 µS/cm
Sample flow rate: 1 - 3 gph (60 - 180 mL/min)
1
Wetted Materials: Silicone, polycarbonate/polyester, glass, stainless steel, PVDF, Viton
Sample Temperature: 0oC - 70oC (32oF to 160oF)
Sample pressure: 5 - 10 psig – drain to atmosphere.
Process connection: 1/4 inch FNPT
Reference Electrode: Flowing open capillary
Weight/Shipping Weight: 5.4lb/7.6lb (2.5kg/3.5kg)
VP6 Cable Connection: 10ft use PN 23645-10
20ft use PN 23645-11
30ft use PN 23645-12
1. Viton is a registered trademark of DuPont Performance Elastomers.
NOTICE
SENSOR/PROCESS
APPLICATION COMPATIBILITY
The wetted sensor materials may not be compatible
with process composition and operating conditions.
Application compatibility is entirely the responsibility of the user.
MODEL 3200HP
Installation
REPLACEMENT PARTS
Part Number
Description
34132-00
Flowing junction reference capillary disc and O-ring
9160590
Cartridge filter for reference electrolyte solution
9210391
Reference fill solution, 500 mL
3200HP
Replacement 3200HP pH sensor
9601025
Air bleed screw
9913804
Washer for air bleed screw
INSTALLATION
1. Refer to Figure 1.
2. Mount the back plate on a wall or Sample Panel
3. Remove the bag containing the Diffuser from the flow cell. Remove the Diffuser from the bag and place it in
the bottom of the flow cell.
4. Connect the sample line and provide a drain line to the flow cell. The flow cell fittings are ¼” FNPT.
5. Set sample flow to between 1 and 4 gallons per hour, flow must remain constant for maximum measurement
accuracy.
inch
mm
PN 3200HP
PN 34083-00
PN 9601025
FIGURE 1.
Dimensional drawing of 3200HP system
2
MODEL 3200 HP
Installation
PUTTING THE 3200 HP IN SERVICE
1.
2.
3.
4.
5.
Wire the Varipol (VP) cable to the analyzer. See the wiring diagrams in the WIRING section.
Start the sample flow. Adjust flow to between 1 and 4 gph (60 - 240mL/min).
Unscrew the clear plastic nut on the flow cell and slip the nut over the sensor.
Connect the VP cable to the sensor. The sensor connector is keyed to ensure proper mating with the cable
receptacle. Once the key has slid into the mating slot, hand tighten the connection by turning the knurled ring
clockwise.
Remove the vinyl cap from the end of the sensor.
CAUTION
WARNING
The solution in the protective cap may cause skin or
eye irritation.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Place the sensor in the flow cell with the cavity containing the reference capillary disc facing forward, away
from the back panel. Tighten the flow cell nut securing the sensor in place. Verify the sample is flowing.
Remove the square reservoir bottle from the clip on the back plate.
Turn the bottle upright. Unscrew the cap and put it in a clean place. DO NOT REMOVE THE PLUG FROM
THE FILTER.
Pour 500 mL of reference fill solution (PN 9210391) into the reservoir. Replace the cap.
Remove the shipping plugs from the reservoir filter and reference electrolyte tube. Save both plugs.
Connect the electrolyte tube to the filter. The luer fitting on the tube presses onto the fitting on the filter.
Invert the reservoir and slip it into the clip on the back plate. A few drops of liquid may fall out of the air vent
inlet.
Bleed air bubbles from the tube and sensor.
a. Loosen the bleed screw until it is engaged by only about one thread.
b. Watch for bubbles flowing down the electrolyte tube and out the bleed port.
c. Allow about 2 mL of fill solution to escape through the port. Use a paper towel to absorb the liquid.
d. Tighten the bleed screw.
Note the reference impedance, if this information is available on the instrument. It should be less than about
350kΩ.
If the reference impedance is high, air bubbles maybe trapped in the sensor. To clear air bubbles, hold the
sensor with the bulb end pointing down and give it a few sharp shakes as though shaking down a fever thermometer. Keep the reference electrolyte tube connected to the reservoir while doing this. Repeat step 12 to
bleed air bubbles.
PN 3200HP
PN 9601025
PN 34083-00
FIGURE 2.
FIGURE 3.
3
MODEL 3200 HP
Calibration
CALIBRATION
1.
2.
3.
4.
5.
Select two stable buffer solutions, preferably pH 7.0 and 10.0. Ideally, the calibration buffers should bracket
the expected pH of the sample and be at least two pH units apart. Use the ring at the bottom of the back
plate to hold the beaker containing the buffer.
Most pH meters offer automatic buffer recognition. Automatic buffer recognition means the instrument automatically calibrates using the correct pH for the buffer temperature. (The pH of a buffer, particularly one with
alkaline pH, changes as temperature changes.) If the meter does not have automatic buffer recognition, refer
to the label on the buffer bottle for a table of pH versus temperature.
Rinse the sensor with deionized water and immerse it in the first buffer. Gently swirl the sensor in the buffer
for a few seconds. Allow the sensor and buffer to reach the same temperature. Once pH readings are stable,
start the calibration. Follow the procedure in the analyzer instruction manual.
After the sensor has been calibrated in the first buffer, remove and rinse it with deionized water. Place the
sensor in the second buffer and complete the calibration.
After the calibration is complete, check the slope and intercept of the sensor. The slope should be between
56 and 60 mV/pH and the offset should be between -20 and 20 mV.
REPLACING THE ELECTROLYTE SOLUTION
The reference electrolyte solution should last two to three months. To replace the electrolyte solution…
1. Remove the reservoir bottle from the clip on the back plate. Turn the bottle upright.
2. Unscrew the cap and discard the remaining fill solution. To avoid twisting the electrolyte tube, turn the
bottle, not the cap. To keep the cap and air inlet tube clean, use the electrolyte tube to hang the cap
from the reservoir clip.
3. Pour 500 mL of reference fill solution (PN 9210391) into the reservoir. Replace the cap. Turn the bottle,
not the cap.
4. Invert the bottle and reattach it to the clip.
5. Bleed air bubbles from the tube and sensor.
a. Loosen the bleed screw until it is engaged by only about one thread.
b. Watch for bubbles flowing down the electrolyte tube and out the bleed port.
c. Allow about 2 mL of fill solution to escape through the port. Use a paper towel to absorb the liquid.
d. Tighten the bleed screw to reseal bleed port.
REPLACING THE CAPILLARY DISC
The reference capillary junction is protected by a filter that prevents suspended solids from plugging the capillary.
During normal operation, suspended solids will gradually coat the filter. Eventually, the electrolyte flow becomes
too low, and the capillary disc must be replaced. Typical symptoms of low flow are an abnormally low pH reading
and high reference impedance (> 600 kΩ). To replace the capillary disc…
1. Remove the electrolyte reservoir from the clip on the back plate. Turn the reservoir upright. Disconnect the
electrolyte tube from the reservoir cap. Place the shipping plug on the reservoir filter.
2. Disconnect the VP cable from the sensor. Remove the sensor from the flow cell.
3. Remove the capillary disc (PN 34132-00) from the storage vial and place it on a clean surface. Don’t let
the new capillary disc dry out.
4. Hold the sensor in a horizontal position with the capillary disc pointing up. With a small screw driver, gently
pry the old disc and O-ring out of the sensor.
5. Place a new O-ring in the opening.
6. Put a few drops of deionized water in the port until liquid slightly overflows it.
7. Place the new capillary disc in the port, without touching the filter membrane. Use your finger tips to gently
push the disc into place. The disc should easily slide into place. Do not touch the filter with your fingers as
the transfer of oils from your skin will diminish the performance of the membrane.
4
MODEL 3200 HP
Replacement Parts
REPLACING THE CAPILLARY DISC CONT.
8. Remove the shipping plug from the reservoir filter. Attach the tube to the reservoir filter.
9. Place the reservoir back in the clip.
10. Bleed air bubbles from the tube and sensor.
a. Loosen the bleed screw PN 9601025 until it is engaged by only about one thread.
b. Watch for bubbles flowing down the electrolyte tube and out the bleed port.
c. Allow about 2 mL of fill solution to escape through the port. Use a paper towel to absorb the liquid.
d. Tighten the bleed screw. (PN 9601025)
FIGURE 4.
Replacing/Installing a junction into the 3200HP
5
MODEL 3200 HP
Troubleshooting
TROUBLESHOOTING
Problem
Cause
Solution
pH reading in error
Air is blocking capillary causing low
electrolyte flow.
To clear air bubbles, hold the sensor with the
bulb end pointing down and give it a few sharp
shakes as though shaking down a fever thermometer. Keep the electrolyte tube connected
to the reservoir. Bleed air bubbles by loosening
the screw in the air vent port.
Capillary is plugged.
Replace capillary disc.
Sensor was not properly calibrated.
Check buffers for freshness and replace buffers
if necessary. Pay particular attention to alkaline
buffers, which can become contaminated with
atmospheric carbon dioxide. Review calibration
procedure and repeat calibration.
Sample flow is too high.
Adjust sample flow to between 60 and
240 mL/min (1 – 4 gph).
Sensor is not properly oriented in
flow cell.
Orient sensor so that the capillary disc faces
front.
Noisy pH reading
pH readings drift
6
Reference electrolyte flow is too low.
As flow drops, pH decreases. Air
might be blocking the capillary or the
capillary might be plugged. (Replace
with PN 34132-00) Check to see if
the filter is plugged. (If so, replace
with PN 9160590).
To clear air bubbles, hold the sensor with the
bulb end pointing down and give it a few sharp
shakes as though shaking down a fever thermometer. Keep the electrolyte tube connected
to the reservoir. Bleed air bubbles by loosening
the screw in the air vent port. If repeated efforts
to clear air bubbles do not work, replace the
capillary disc.
Sensor is dirty.
Clean the sensor by rinsing the capillary filter
with deionized water. Clean the pH glass bulb
by rinsing with dilute hydrochloric acid. Recalibrate the sensor after cleaning.
Flow is not stable
Fluctuations in sample flow can cause slight
schanges in the pH reading. Keep flow
constant.
MODEL 3200 HP
Wiring
WIRING
Connector Pin Functions
(Sensor end)
FIGURE 4. Wire Functions for Variopol connector cable
PN 23645-10,11 & 12
FIGURE 5. Model Xmt-P-10 Panel Mount Enclosure
FIGURE 6. Model Xmt-P-11 Pipe/Surface Mount Enclosure Wiring
7
MODEL 3200 HP
Wiring
FIGURE 7. Model 5081-P Wiring
FIGURE 8. Model 54e Wiring
8
MODEL 3200 HP
Wiring
FIGURE 9. Model 1055-10-22 Panel Mount Enclosure Wiring
FIGURE 10. Model 1055-11-22 Pipe/Surface Mount Enclosure Wiring
9
MODEL 3200 HP
Wiring
FIGURE 11. Model 1055-01-10-22-32 Wiring
54e
5081-P
FIGURE 12. Wiring Details with Remote J-Box and Preamp (PN 23555-00)
10
MODEL 3200 HP
Wiring
FIGURE 13. Model 1055-01-10-SI
FIGURE 14. Model 1055-01-11-SI
FIGURE 15. Model 1056-01-22-38-AN
11
The right people,
the right answers,
right now.
ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE
http://www.raihome.com
Specifications subject to change without notice.
Credit Cards for U.S. Purchases Only.
Emerson Process Management
Liquid Division
2400 Barranca Parkway
Irvine, CA 92606 USA
Tel: (949) 757-8500
Fax: (949) 474-7250
http://www.raihome.com
© Rosemount Analytical Inc. 2008
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