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Sea-Bird Scientific WQM-a User Manual

Water quality monitor
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Document No.
WQM/x171031
Release Date:
2018-07-26
Version:
A
User manual
Water Quality Monitor
541-929-5650
seabird.com
WQM

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Summary of Contents for Sea-Bird Scientific WQM-a

  • Page 1 User manual Water Quality Monitor Document No. WQM/x171031 Release Date: 2018-07-26 Version: 541-929-5650 seabird.com...

  • Page 3: Table Of Contents

    Table of Contents Section 1 Specifications ........................3 1.1 Mechanical........................... 3 1.1.1 Standard bulkhead connector..................... 3 1.1.1.1 Serial connector......................3 1.1.1.2 Analog external data port connector................3 1.2 Electrical............................4 1.3 Communications.......................... 4 1.4 Optical............................4 1.5 Conductivity, Temperature, Depth, Dissolved Oxygen..............4 Section 2 Functional check ......................
  • Page 4 Table of Contents 5.1 Setup selections......................... 33 5.1.1 Date and time........................33 5.1.2 Get and send setup information..................33 5.1.3 Dissolved Oxygen (DO) stabilization time................. 33 5.1.4 Bleach Injection System (BLIS) operation................ 33 5.1.5 Power use estimates......................34 5.1.6 Sensor internal disk storage....................34 5.1.7 User-specific internal sensor characterization..............

  • Page 5: Section 1 Specifications

    Section 1 Specifications 1.1 Mechanical Diameter 18.5 cm WQM length 65.4 cm WQMx length 69.0 cm Depth rating 200 m Temperature range -5–35 °C Pressure housing Acetal coploymer, ABS, PVC, titanium, copper WQM weight in air, water 5.4 kg, 1.8 kg WQMx weight in air, water 6.25 kg, 1.7 kg 1.1.1 Standard bulkhead connector...

  • Page 6: Electrical

    Specifications 1.2 Electrical Input voltage 9–16 VDC Current draw, data collection < 100 mA Current draw, peak data collection 180 mA Current draw, BLIS operation 350 mA Current draw, low power < 50 µA 1.3 Communications Transfer standard RS232 Sample rate 1 Hz 1.4 Optical Sensor...

  • Page 7: Section 2 Functional Check

    DO—Dissolved Oxygen • FDOM—Fluorescent Dissolved Organic Matter Model Description WQM-a Available analog output. BLIS anti-fouling. Chlorophyll fluorometer and turbidity sensor. CTD and DO sensors. WQM-d Digital output. BLIS anti-fouling. Chlorophyll fluorometer and turbidity sensor. CTD and DO sensors. WQMx-a Available analog output. BLIS anti-fouling. Chlorophyll fluorometer, turbidity, and CDOM sensors. CTD and DO sensors.

  • Page 8: Monitor Data

    Functional check 7. Push Start Sample, then push Start WQM Now. The sensor does a warm-up for the CTD, DO, and the optics before it starts the Sample mode. This sequence takes approximately 35 seconds. 8. Push Stop WQM Sample, then push Yes, Stop WQM Sampling. The sensor goes into In Standby mode.

  • Page 9: Scroll Data Tab

    Functional check • For FDOM: Put a blue fluorescent stick in front of the FDOM (purple) light to change the value of the data from the FDOM sensor. The value increases toward the maximum output value listed on the sensor's characterization page. 3.

  • Page 10: View Data Tab

    Functional check Temperature, Pressure, DO, Turbidity, Chlorophyll and CDOM show in the View Data tab. 2. Select different checkboxes under the Plot heading to see different parameters in the View Data tab. 3. Start the sensor. 4. Monitor the data in the View Data tab and in the Data Sidebar area. 2.2.3 View data tab Monitor the collected data in real-time.

  • Page 11: Section 3 Sensor Set Up And Operation

    Section 3 Sensor set up and operation W A R N I N G Bleach is caustic. Wear nitrile gloves and safety glasses and work in a well ventilated area to use bleach. C A U T I O N Do not supply more than 16 VDC to the sensor.

  • Page 12: Adjust Pressure Offset

    Sensor set up and operation 2. Push Increment File # to make the file number increase. 3. Push Get Status. The file number increases by one. 3.1.4 Adjust pressure offset The sensor uses pressure measurements to calculate the depth of the water. As the atmospheric pressure changes, the sensor calculates an offset for the pressure measurement.

  • Page 13: Adjust Operation Setup

    Sensor set up and operation Refer to the section on Pre-deployment check on page 5 for details. 4. Push Get Current Setup. Look at the values stored in the sensor. They show in the Current Setup area. 3.2.1 Adjust operation setup The examples in this section refer to a sensor that is set up for "Autonomous"...

  • Page 14: Set Up Data Output

    Sensor set up and operation 4. Push Send New Setup to store the values in the sensor. 5. Push Get Current Setup to make sure that the correct values show. 3.3 Set up data output 1. Make sure that power is supplied to the sensor and it is in In Standby mode. 2.

  • Page 15: Digital Edp Setup

    Sensor set up and operation A new tab, External Data Port, shows in the software. 2. Push Get EDP Setup from WQM. Look at the setup values stored in the sensor. 3.4.1 Digital EDP setup The user can adjust the "Signal" values in this tab so that the latest characterization values from a connected sensor are stored in the WQM.

  • Page 16: Custom Edp Set Up

    Sensor set up and operation 5. Enter the serial number of the analog sensor in the SN: text box. 6. Push Edit to change the pH Slope or pH Offset in the Analog Signal 1 area. 7. Push Done. 8. Push Edit to change the ORP M or ORP B in the Analog Signal 2 area. 9.
  • Page 17 Sensor set up and operation a. Select the serial number ("SN") of the sensor connected to the WQM. b. Select the number of sampling parameters ("Signals") the sensor has. c. Select the "Total Columns" of output. The software counts the S/N, Date, Time as columns 1–3. The data format of the external sensor is N/U, Data, N/U, Data, N/U, Data, N/U where N/U is "not used"...

  • Page 18: Erase Edp Setup

    Sensor set up and operation e. Enter the Scale:, the scale factor of the sensor from the sensor-specific calibration or characterization page. Enter the Offset:, the offset (dark counts) value from the sensor-specific calibration or characterization page. 9. Push Done. 10.

  • Page 19: File Types

    Sensor set up and operation 1. Push Select Download Folder to select a location on the PC to save the downloaded data. 2. Push Get WQMx Directory. A list of the files stored in the sensor shows in the WQM Directory area. 3.

  • Page 20: Set Up Blis For Deployment

    Sensor set up and operation 3.8 Set up BLIS for deployment D A N G E R Bleach is corrosive and harmful to almost every part of the sensor. Make sure that bleach does not get into the sensor. The BLeach Injection System (BLIS) must be filled with bleach and its pump must be primed before deployment.
  • Page 21 Sensor set up and operation 4. Turn the top of the reservoir counterclockwise to remove. ™ ® 5. Make sure there is a Playtex Drop-Ins liner inside the reservoir. 6. Pour 125–150 ml of bleach into the liner inside the reservoir. The appropriate quantity of bleach will vary with the deployment environment.
  • Page 22 Sensor set up and operation 9. Make sure the reservoir is secure: insert the short end of the 5/32" hex key into one of the holes on the top and pull up. The reservoir does not release. Installation tip: If the reservoir does not "click" into place, make sure that the pin on the receiving connector is in the unlocked position.

  • Page 23: Section 4 Sensor Maintenance

    Section 4 Sensor maintenance C A U T I O N Do not use acetone or other solvents to clean any part of the sensor. 1. After each cast or exposure to natural water, flush the sensor with clean fresh water. 2.

  • Page 24: Replace Ct-Do Anti-Fouling Devices

    Sensor maintenance Do not remove the screws that attach the elbow fittings to the sensor. 2. Soak the sensor upside down (optics end up) in a container of water at approximately 20 °C for a minimum of 30 minutes. 3. Put the 3/8" ID tubing of the CT-DO cleaning device on the exhaust elbow fitting. 4.

  • Page 25: Replace Ct-Do Intake Anti-Fouling Cartridge

    Sensor maintenance 4.2.1 Replace CT-DO intake anti-fouling cartridge 1. Use a #2 Phillips screwdriver to remove the two screws on opposite sides of the copper sleeve. Do not remove the three screws on the top. Figure 3 CT-DO end cap removal 2.

  • Page 26: Replace Ct-Do Exhaust Anti-Fouling Cartridge

    Sensor maintenance Figure 6 Removal of anti-fouling cartridge If the cartridge is difficult to remove, use needle-nose pliers to break up the anti- fouling cartridge. 7. Clean the inside of the duct base. 8. Put the used anti-fouling cartridge and the swab into a plastic bag for disposal. 9.

  • Page 27: Clean Eco Sensors

    Sensor maintenance Figure 8 Canister end cap removal 3. Use a cotton swab to remove the anti-fouling cartridge. 4. Clean the canister with a lint-free tissue or canned air. 5. Put the new anti-fouling cartridge in the canister. 6. Replace the end cap of the canister. 7.
  • Page 28 Sensor maintenance Figure 9 Bio-wiper screw holes 1 the screw in the clamping hole 2 the expander hole 3. Lift the Bio-wiper off of the faceplate. 4. If used, remove the jacking screw. 5. Use a small Phillips screwdriver to remove the screws that attach the faceplate to the optics face.

  • Page 29: Wiper Replacement

    Sensor maintenance Figure 10 Bio-wiper clearance 1 Bio-wiper clearance from faceplate 2 Bio-wiper flex 20. Use the 3/32" hex key to tighten the screw. Do not over-tighten the screw. 21. Turn on the sensor to make sure that the Bio-wiper rotates correctly. The Bio-wiper must rotate 180 degrees and uncover the optics before they come on.

  • Page 30: Examine Pressure Sensor

    Sensor maintenance Figure 13 Wiper attached with set screw 7. Remove the wiper height gauge. 4.4 Examine pressure sensor C A U T I O N Do not use a brush or any object in the pressure sensor. It is easy to break. Examine the pressure sensor at regular intervals and remove any particles or debris.

  • Page 31: Verify Flow Volume Of Blis

    Sensor maintenance 3. Lift the clamp up and off the CT and BLIS protective copper sleeves. 4. Use a 5/32" hex key to remove the two 10-24 x ½" screws at the base of the BLIS sleeve. 5. Lift the copper BLIS sleeve up and off. Do not twist any more than necessary. ™...
  • Page 32 Sensor maintenance 3. Supply power to the sensor. 4. Push Stop WQM Sample, then Yes, then Stop WQM Sampling. The sensor is in Standby mode. 5. Go to the Help menu and select Troubleshooting. 6. Connect the 3 ml syringe to the intake and fill with clean water. 7.

  • Page 33: Troubleshoot Blis

    Sensor maintenance 15. Use a 5/32" hex key to install the screw in the clamp. Do not overtighten. 16. Hold the clamp only to lift the sensor. If the clamp does not slip, it is tight enough. 4.5.2 Troubleshoot BLIS If the water level in the intake area does not fall while the BLIS is in operation, do the steps below.

  • Page 34: Long Term Storage

    Sensor maintenance Separation of the rubber from the pins. Swelled or bulging rubber pins. ™ 6. Apply a small quantity of 3M Spray Silicone Lubricant (3M ID# 62-4678-4930-3) to the pin end of the connector. Make sure to let it dry. 7.

  • Page 35: Section 5 Reference

    Section 5 Reference 5.1 Setup selections The user can view or adjust the sensor configurations below in the Setup tab. • the internal clock • the sample parameters • the BLIS parameters • the condition of the BLIS • the quantity of data storage used •...

  • Page 36: Power Use Estimates

    Reference Adjust the BLIS for the type of environment it will be deployed in. • BLIS Operation—Set to "On." When the conductivity value shows that the sensor is in water, the BLIS sends bleach to the pump manifold after the first sample of every hour.

  • Page 37: User-Specific Internal Sensor Characterization

    Reference 5.1.7 User-specific internal sensor characterization W A R N I N G FDOM sensors use an ultraviolet LED light source. Do not look directly at a UV LED when it is on. It can damage the eyes. Keep products that have UV LEDs away from children, pets, and other living organisms.

  • Page 38: Autonomous Sample Control

    Reference that the manufacturer replaces the battery every time the sensor is returned to be calibrated or serviced. The UPS in the sensor comes on when the voltage falls below 8 V while the sensor collects data. • Autonomous Control: The sensor closes its data files, goes into a low power state, and comes on again for the next scheduled data collection.

  • Page 39: External Sample Control

    Reference 5.1.10 External sample control Use the External Sample Control to align the data that is collected by the WQM sensor with the data that is collected from other sensors when they are all connected to an external logger or controller. The WQM is turned on by the external logger at the start of the sample interval.

  • Page 40: Data Display

    Reference 5.3 Data display The user can increase the size of the display in the View Data tab so that it is easier to see. 1. Go to the area to the Data Sidebar area and select the parameters to monitor in the View Data tab.

  • Page 41: Power Modes

    Reference 2. To save only collected data, push Save WQM Data on PC. A new window shows. 3. Make a name and location for the file in which to save the collected data. 4. Push Save. 5. To save all collected data and debug messages, push Save All Output on PC. A new window shows.

  • Page 42: Missing Data

    Reference 5.6 Missing data The normal data that is collected by the sensor starts with a row of header information and then data records. Each data record is made of a data field separated by a comma. If a sensor is configured incorrectly, there may be gaps in the data, which show as commas.

  • Page 43: Advanced File Processing

    Reference 14. Go to the External Data Port tab and select "Custom Setup" in the Instrument Options drop-down menu. 15. Select "38400 Baud" or "115200 Baud" in the baud rate drop-down menu. 16. Push Send New Setup. 17. The Status area shows Storing EDP Setup as the change is saved in the WQM. 18.

  • Page 44: Functional Tests

    Reference 8. Push Load File Header. The software has the correct output values based on the content of the .raw file. 9. Make sure that the correct file shows in the Raw File: area at the top of the window, and the status message reads File Header Load Complete.

  • Page 45: Horizontal Deployment

    Reference The user can do tests on the sensors that make up the WQM to make sure that they operate correctly. 1. Make sure that the sensor is in In Standby. 2. Go to the Help menu, then select Troubleshooting. 3.

  • Page 46: Bio-Fouling Prevention

    Reference correctly. It may take two or three data collection cycles to remove air bubbles from the sensor's plumbing. If necessary, a plumbing fitting is available from the manufacturer that will aid in the removal of air bubbles. 5.11 Bio-fouling prevention Electrical tape, copper foil tape, and anti-fouling paint will decrease the rate of bio-fouling on the plastic parts of sensors.

  • Page 47: Bleach Injection System (Blis) Operation

    Reference Item Orange fluorescent stick to test chlorophyll MAA-520001 output ™ Scotch-Brite scrub pad to clean copper GXA-ZX0203 ® Ecominder anti-fouling paint kit BAA-003000 3/8" right-angle hose barb RXA-031630 ® 50 ml plastic bottle of Triton X-100 50091 CT-DO cleaning device 50431 6-32 x 1/8"...
  • Page 48 Reference • Estimated BLIS Remaining—The host software makes a continuous estimate of the quantity of bleach in the reservoir. The estimate is in relation to the Sample Interval, the Injection Volume, and the BLIS Volume Used.

  • Page 49: Section 6 General Information

    Section 6 General information Revised editions of this user manual are on the manufacturer's website.

  • Page 50: Af24173 Anti-Fouling Device

    General information 6.1 AF24173 anti-fouling device D A N G E R Refer to the Precautionary Statements for additional information. For use only in Sea-Bird Electronics' conductivity sensors to control the growth of aquatic organisms within electronic conductivity sensors. Replacement AF24173 Anti-fouling devices are supplied in polyethylene bags that have the label shown below.

  • Page 51: Warranty

    General information PRECAUTIONARY STATEMENTS HAZARD TO HUMANS AND DOMESTIC ANIMALS D A N G E R Corrosive—Causes irreversible eye damage and skin burns. Harmful if swallowed. Harmful if absorbed through the skin or inhaled. Prolonged or frequently repeated contact may cause allergic reactions in some individuals.

  • Page 52: Service And Support

    General information will replace or repair, as deemed necessary, any defective components. This warranty does not include shipping charges to and from the manufacturer's facility. 6.3 Service and support The manufacturer recommends that sensors be sent back to the manufacturer annually to be cleaned, calibrated, and for standard maintenance.
  • Page 54 WET Labs, Inc. 620 Applegate Street Philomath, OR 97370 U.S.A. Tel. (541) 929-5650 © WET Labs, Inc. , 2017. All rights reserved. Printed in U.S.A. *WQM/x171031*...

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