Hydro WQM-100 Instruction Manual
  1. Manuals
  2. Brands
  3. Hydro Manuals
  4. Monitor
  5. WQM-100
  6. Instruction manual

Hydro WQM-100 Instruction Manual

Water quality monitor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
WQM-100
Water Quality Monitor
Instruction Manual
The information contained in this manual was current at the time of printing.
The most current
versions of all Hydro Instruments manuals can be found on our website:
www.hydroinstruments.com
WQM-100 Rev. 8/25/2020
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the WQM-100 and is the answer not in the manual?

Questions and answers

Summary of Contents for Hydro WQM-100

  • Page 1 WQM-100 Water Quality Monitor Instruction Manual The information contained in this manual was current at the time of printing. The most current versions of all Hydro Instruments manuals can be found on our website: www.hydroinstruments.com WQM-100 Rev. 8/25/2020...

  • Page 2: Table Of Contents

    Hydro Instruments WQM-100 Water Quality Monitor Table of Contents General Information .................3 1. Important Operational Information 2. Important Handling Considerations 3. Electrode Lifespan Installation ....................4 1. Sample Water Connection and Control 2. Sample Water Disposal Considerations 3. Sample Point Selection 4.

  • Page 3: Table Of Contents I. General Information

    I. GENERAL INFORMATION 1. Important Operational Information To increase the life expectancy, accuracy and response of the electrode adhere to the following operational guidelines: 1. Keep the electrode wet. Allowing the electrode to dry out will lead to slow response, erroneous readings and damage.

  • Page 4: Installation

    1. Sample Water Connection and Control: The following are some considerations relating to the sample water supply. The WQM-100 Water Quality Monitor requires a constant supply of sample water at a controlled rate and pressure. Precautions should also be taken to ensure that the sample water reaching the measurement cell is not altered as it passes through the sample water piping.

  • Page 5: Sample Water Piping Examples

    It should also be considered that the sample point should be located such that the residual reading can be used as a control signal for the chemical injection. Especially, it should be considered that if there is a long time delay between chemical injection changes and the change being detected by the measurement cell, then chemical injection control is adversely aff...

  • Page 6: Sample Point Sources

    FIGURE 2 (Sample Point Sources) FIGURE 3 (Installation Example) WQM-100 TRUE BLUE NET #1 = 1234 NET #2 = 5678 TRUE BLUE RAH-PRV (optional) To Drain pipe pipe...

  • Page 7: Mounting The Electrodes

    5. Wiring the Electrodes: The WQM-100 will have its electrode connections pre-wired and only the electrode(s) need to be connected. If an electrode is being added that the unit was not originally supplied with or if the cable assembly is being replaced, please referece the following installation points.

  • Page 8: Calibration And Programming

    2. Programming the WQM-100 Water Quality Monitor a. Operation (See Section VII): This is the normal operation state of the WQM-100. It provides a display of the current readings; Temperature, (optional) pH, (optional) ORP, (optional) Conductivity, Live Charts and any alarm conditions that may exist.

  • Page 9: Operation Menu Flow Chart

    FIGURE 5 (Operation Menu Flow Chart) Ph 7.54 Alarm Status (1 hr) Cond Temp ORP 620 mV (1 hr) Hold Time Begin I/O Hold? Enter Password Cond 0.62 mS (1 hr) Temp 70F (1 hr)

  • Page 10: Hidden Confi Guration & Live Data

    FIGURE 6 (Hidden Confi guration & Live Data Screens) Probe Configuration Cond Live Data Probe 1 Temp Filter Time Cond 3 Probe 2 ADC 3 Filter Time TempCo 3 Probe 3 Cond 4 Filter Time ADC 4 TempCo 4 Probe 4 Filter Time Modbus Setup Packet Count...

  • Page 11: Explanation Of Operation Mode Screens

    Typically, a non-normal alarm condition will be shown in red color. Access Screen: In addition to allowing access to the WQM-100 Confi guration screen (after adjusting the password value to “100”), users can initiate an “I/O Hold” from this screen.

  • Page 12: Confi Guration Menus

    FIGURE 7A (Confi guration Menus)

  • Page 13: Confi Guration Menus

    FIGURE 7B (Confi guration Menus)

  • Page 14: Explanation Of Configuration Mode Screens

    V. EXPLANATION OF CONFIGURATION MODE SCREENS WQM-100 Confi guration Screen: This screen lists titles of accessible Setup screens for the electrodes, outputs, data logging, and charting. Use the button to select an option, and then press the button to access the associated screen(s).

  • Page 15: Orp Electrode

    These are two point calibrations carried out with two known pH buff er solutions. 1. In the Temperature calibration screen, set the Temperature mode to manual and enter the actual buff er solution temperature. NOTE: pH buff er calibrations are somewhat temperature dependent. pH buff ers are usually accurate at 25ºC.
  • Page 16 Mode: Select ‘AUTO’ (Automatic) or ‘MANL’ (Manual) Automatic enables the temperature to be automatically detected via the thermistor. Manual Temp: This will show ‘OFF’ unless the mode is ‘MANL’, in which case the value is adjustable. Sample Calibration: This line is visible when the temperature mode is set to ‘AUTO’. The temperature displayed represents what the program interprets the current temperature reading to be.
  • Page 17 Data Log Setup: This screen allows user to change the following values and parameters for setting the optional data logger: Data Log: Select ‘ON’ or ‘OFF’ to enable/disable data logging. Interval: Adjust the frequency at which data will be recorded. Set Date: Set the current date (Day, Month, Year).

  • Page 18: Explanation Of Pid Control Mode Screens

    VI. EXPLANATION OF PID CONTROL SCREENS PID Control: The PID Control program can be accessed via Confi guration screen 1. It uses the fi rst three menu options: “PID Contorl”, “Flow Input” and “PO1 Output”. The Confi guration sceens can accessed from the operation mode, scroll down and enter “100”...
  • Page 19 Flow Input: This branch accesses the settings for the proportional (fl ow) input. Dosage (Gain): This value will adjust the ratio of chemical feed to the PV1 water fl ow. It is eff ectively a multiplication factor that is applied to the calculated chemical feed rate. Units: Select desired units (MGD, GPM, GPD, LPM, MLD, %, M /H).

  • Page 20: Maintenance & Cleaning

    Failure of the pH probe can be indicated by an excessively high or low reading. If the probe cannot be recalibrated, then it must be replaced. Instructions for replacement will be included with the replacement pH probes available from Hydro Instruments. Refer to sections I.1, II.4, VI, and Troubleshooting of this manual.

  • Page 21: Troubleshooting

    3. If the displayed temperature is extremely high or extremely low, the thermistor has either lost connection to the circuit board or has failed, requiring replacement. This is a 10K Ohm resistor and replacements are available from Hydro Instruments. Thermistor is damaged or missing 1.
  • Page 22 Refer to Figure 9. 3. A blank display may indicate a failure of the display, the power supply board or the primary circuit board. Consult Hydro Instruments or an authorized representative for assistance. 4-20 mA Output channel values are not accurate 1.
  • Page 23 Communication Errors The MB410 Display board is communicating with the other boards by Modbus over the ribbon cable. If the ribbon cable is not properly connected to each board, then the MB410 Display board may lose communication with one or more circuit boards. If so, you would see a “COMM ERROR” message such as “Node 1 Error”.

  • Page 24: Optional Data Logger

    IX. OPTIONAL DATA LOGGER 1. Description: When enabled in the analyzer software, the data logger records the measured pH, ORP, conductivity and temperature (when applicable electrodes are installed) at a selectable frequency. This data is recorded on the Micro SDHC memory card and can be retrieved using any text-reading program.
  • Page 25 Make your selection and then click “OK”. Now the data should have been imported into the Excel spreadsheet. TABLE 3: WQM-100 Data Log File Example Date...

  • Page 27: Circuit Boards

    FIGURE 8 (WQM-100 Circuit Boards)

  • Page 28: Monitor Internal Wiring And Connections

    FIGURE 9 (Monitor Internal Wiring and Connections) MB410 Power Display Board Switch Ribbon Cable AC Power from Membrane Switch Terminal Block Micro SDHC Ribbon Cable MJ500 Card Slot from MB410 Real Time Clock Modbus Terminals V+ A B V- Power Supply Board 24VDC Power Output AC Power Inlet...

Table of Contents