Hach 5740sc User Manual
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Hach 5740sc User Manual

Galvanic membrane dissolved oxygen sensor
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  • Page 1 客服：400 688 9809 Visit http://www.hach.com...
  • Page 2 客服：400 688 9809 Catalog Number 6120018 Model 5740sc Galvanic Membrane Dissolved Oxygen Sensor USER MANUAL May 2005, Edition 2 ©Hach Company, 2004–2005. All rights reserved. Printed in the U.S.A. eac/dp...

  • Page 3: Table Of Contents

    Table of Contents 客服：400 688 9809 Section 1 Specifications............................5 Section 2 General Information ..........................7 2.1 Safety Information ............................... 7 2.1.1 Use of Hazard Information......................... 7 2.1.2 Precautionary Labels..........................7 2.2 General Sensor Information ..........................7 2.3 Theory of Operation ............................8 Section 3 Installation ..............................
  • Page 4 Table of Contents 客服：400 688 9809 Section 6 Maintenance............................35 6.1 Maintenance Schedule ............................35 6.2 Cleaning the Sensor ............................35 6.2.1 Cleaning the Galvanic Sensor........................35 6.3 Preventing the Sensor Membrane from Drying Out................... 35 6.4 Replacing the Sensor Assembly........................36 Section 7 Troubleshooting............................

  • Page 5: Section 1 Specifications

    Section 1 Specifications 客服：400 688 9809 Specifications are subject to change without notice. Components Corrosion-resistant materials, fully-immersible probe with 10 m (30 ft) cable Measuring Range (Dissolved Oxygen) 0 to 40 ppm (0 to 40 mg/L) or 200% saturation Measuring Range (Temperature) –5 to 50 °C (23–120 °F) Probe Operating Temperature –5 to 50 °C (23–120 °F)
  • Page 6 客服：400 688 9809 Visit us at www.hach.com...

  • Page 7: Section 2 General Information

    Section 2 General Information 客服：400 688 9809 2.1 Safety Information Please read this entire manual before unpacking, setting up, or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment. Do not use or install this equipment in any manner other than that specified in this manual.

  • Page 8: Theory Of Operation

    General Information 客服：400 688 9809 2.3 Theory of Operation This galvanic oxygen sensor operates as a battery generating a voltage. The resulting voltage is directly proportional to the dissolved oxygen concentration. The cell is constructed with a fine wire coil cathode wrapped around a lead anode. A salt solution fills the void between the anode and cathode.

  • Page 9: Section 3 Installation

    Section 3 Installation 客服：400 688 9809 DANGER Only qualified personnel should conduct the installation tasks described in this section of the manual. 3.1 Connecting/Wiring the Sensor to the sc100 The sensor cable is supplied with a keyed quick-connect fitting for easy attachment to the controller, see Figure 1.

  • Page 10: Connecting The Sensor To The Sc1000

    Installation 客服：400 688 9809 Figure 2 Hard-wiring the Sensor DATA DATA DATA DATA DATA DATA DATA DATA – DATA – DATA – DATA – DATA SERVICE REQUEST SERVICE REQUEST SERVICE REQUEST SERVICE REQUEST OUT 2 OUT 2 OUT 2 OUT 2 OUT 2 OUT 2 OUT 2...

  • Page 11: Installing The Sensor In The Sample Stream

    Installation 客服：400 688 9809 3.3 Installing the Sensor in the Sample Stream Each sensor is supplied with a sensor lockring for use with flow tee installations. Replace the sensor protector with the lockring for those applications. 3.3.1 Sensor Installation Requirements •...
  • Page 12 Installation 客服：400 688 9809 Figure 4 Sensor Installation Examples...

  • Page 13: Section 4 Sc100 Operation

    Section 4 sc100 Operation 客服：400 688 9809 4.1 Using the sc100 Controller The front of the controller is shown in Figure 5. The keypad consists of the eight keys described in Table Figure 5 sc100 Display Features sc100 Instrument display IrDA Port BACK HOME...

  • Page 14: Sc100 Display Features

    sc100 Operation 客服：400 688 9809 4.1.1 sc100 Display Features When a sensor is connected and the controller is in measurement mode, the controller display will show the current dissolved oxygen reading plus the sample temperature. The display will flash on startup, when a sensor error has occurred and when a sensor is calibrated.

  • Page 15: Sensor Setup

    sc100 Operation 客服：400 688 9809 4.2 Sensor Setup When a sensor is initially installed, the serial number of the sensor will be displayed as the sensor name. To change the sensor name refer to the following instructions: 4.2.1 Changing the Sensor Name Step Select Menu Level/Instructions...

  • Page 16: Pressure And Elevation

    sc100 Operation 客服：400 688 9809 4.2.3 Pressure and Elevation Table 3 can be used to estimate the true barometric pressure at certain elevations. The correspondence is based on the assumption that at sea level the barometric pressure is 760 mmHg. After determining the barometric pressure from the table or obtaining it from a local weather service, enter this value into the instrument, see section 4.2.4 on page Note: If the barometric pressure from Table 3 is entered in the meter, the altitude entered in...

  • Page 17: Sensor Diagnostics Menu

    sc100 Operation 客服：400 688 9809 4.3 Sensor Diagnostics Menu SELECT SENSOR ERROR LIST–See section 7.1 on page WARNING LIST–See section 7.2 on page 4.4 Sensor Setup Menu SELECT SENSOR (if more than one sensor is attached) CALIBRATE AIR CAL Perform an air calibration of the sensor (slope calibration). See section 4.5.1 on page SAMPLE CAL Enter a value for the DO concentration as determined by another sensor or independent method.
  • Page 18 sc100 Operation 客服：400 688 9809 4.4 Sensor Setup Menu CONFIGURE (continued) TEMP ELEMENT Choose SELECT TYPE to specify the temperature sensor that is integrated into the sensor or choose SET MANUAL to disable automatic temperature compensation. Default temperature sensor: NTC 30K CAL DAYS Shows the number of days since the last calibration.

  • Page 19: Calibration

    sc100 Operation 客服：400 688 9809 4.5 Calibration The dissolved oxygen sensor has been calibrated at the factory (Specifications on page 5). The calibration procedures that follow will result in an instrument offset or gain correction and may be performed if required by your regulatory agency. The air calibration is the most accurate method.

  • Page 20: Sample Calibration

    sc100 Operation 客服：400 688 9809 4.5.2 Sample Calibration Step Select Menu Level/Instructions Confirm — Remove the probe from the process and clean it — — Obtain a sample solution with a known value. — MAIN MENU — SENSOR Setup Highlight the appropriate sensor if more than one sensor is attached. CALIBRATE SAMPLE CAL Choose from the available Output Mode options (Active, Hold, or Transfer).

  • Page 21: Concurrent Calibration Of Two Sensors

    sc100 Operation 客服：400 688 9809 Table 4 Calibration Response Calibration Response Explanation Complete Indicates the calibration is complete and stored in the instrument. Indicates the air calibration has failed due to an excessively high calculated gain Cal Fail, Offset High value.
  • Page 22 客服：400 688 9809 Visit us at www.hach.com...

  • Page 23: Section 5 Sc1000 Operation

    Section 5 sc1000 Operation 客服：400 688 9809 5.1 Using the sc1000 Controller The sc1000 is a touch screen application. Use your finger to touch keys and menu commands. In normal operation the touch screen displays the measured values for the sensors selected.

  • Page 24: Navigating The Menu Windows

    sc1000 Operation 客服：400 688 9809 Figure 8 Main Menu MENU SENSOR STATUS SENSOR SETUP SYSTEM SETUP TEST/MAINT Display Area BACK FORWARD –confirms the entry or selection. ENTER –changes to the display of measured values. The pop-up toolbar cannot open from the menu window. To view the HOME Main Menu from this display, touch the Home button and then the bottom of the screen.
  • Page 25 sc1000 Operation 客服：400 688 9809 Figure 9 Changing a Menu Item Display Area –changes to the display of measured values. HOME –scrolls up BACK –scrolls down FORWARD DOWN –confirms the entry or selection. ENTER Figure 10 Keypad Enters numbers or the character as shown on the button. Moves the cursor one position to the left or to the right.

  • Page 26: Sensor Setup

    sc1000 Operation 客服：400 688 9809 Figure 11 List Box mg/l Scrolls up or down –cancels and entry. CANCEL –confirms a selection. ENTER Figure 12 Message window COMMUNICATION ERROR Ph [11f20030007] Scrolls up or down. Displays the messages or warnings. Displays details on the selected entry. This button changes back to the previous display.

  • Page 27: Sensor Data Logging

    sc1000 Operation 客服：400 688 9809 5.3 Sensor Data Logging The sc1000 provides a data log for each sensor. 1. Tap the bottom-left of the screen to display the pop-up toolbar and press MAIN MENU 2. From the Main Menu, select SENSOR SETUP and press ENTER 3.

  • Page 28: Selecting Atmospheric Pressure

    sc1000 Operation 客服：400 688 9809 5.4.1 Selecting Atmospheric Pressure 1. Tap the bottom-left of the screen to display the pop-up toolbar and press MAIN MENU 2. From the Main Menu, select SENSOR SETUP and press ENTER 3. Select the appropriate sensor if more than one is attached and press ENTER 4.
  • Page 29 sc1000 Operation 客服：400 688 9809 5.6 Sensor Setup Menu (continued) CONFIGURE (continued) FILTER Specify the number of seconds for signal averaging (0–60). Default: 0 seconds. PRESSURE UNITS Choose pressure units in mmHg, feet, meters. Default: mmHg SET PRESSURE Enter either altitude or air pressure. Correlates to the pressure units setting. Range: –5000 to 15000. Default: 760 mmHg SALINITY UNITS Choose from mS/cm, mMol/L, ppt, or mg/L.

  • Page 30: Calibration

    sc1000 Operation 客服：400 688 9809 5.7 Calibration The dissolved oxygen sensor has been calibrated at the factory to the specifications listed Specifications on page 5. Due to the inherent accuracy and stability of the luminescent dissolved oxygen technology, sensor calibration is seldom or never necessary. The calibration procedures will result in an instrument offset or gain correction and may be performed if required by regulatory agencies.

  • Page 31: Sample Cal-Calibration By Comparison To A Winkler Titration

    sc1000 Operation 客服：400 688 9809 5.7.2 Sample Cal—Calibration by Comparison to a Winkler Titration 1. Tap the bottom-left of the screen to display the pop-up toolbar and press MAIN MENU 2. From the Main Menu, select SENSOR SETUP and press ENTER 3.

  • Page 32: Sample Cal-Calibration By Comparison To A Hand-Held Do Analyzer

    sc1000 Operation 客服：400 688 9809 5.7.3 Sample Cal—Calibration by Comparison to a Hand-held DO Analyzer 1. Place the dissolved oxygen sensor as close to the LDO sensor as possible. 2. Wait for the hand-held DO analyzer to stabilize. 3. Tap the bottom-left of the screen to display the pop-up toolbar and press MAIN MENU 4.
  • Page 33 sc1000 Operation 客服：400 688 9809 Table 6 Calibration Response Calibration Response Explanation Cal Complete Indicates the Calibration is complete. Indicates the air calibration has failed due to an excessively high calculated gain value. Repeat the Cal Fail, Offset HIgh calibration. Indicates the air calibration has failed due to too low of a calculated gain value.
  • Page 34 客服：400 688 9809 Visit us at www.hach.com...

  • Page 35: Section 6 Maintenance

    Section 6 Maintenance 客服：400 688 9809 DANGER Only qualified personnel should conduct the tasks described in this section of the manual. 6.1 Maintenance Schedule Maintenance Task 90 days 120 days 365 days Clean the sensor Inspect sensor for damage Replace sensor Replace sensor O-rings Per the schedule mandated by your regulatory Calibrate Sensor (as required by regulatory agency)

  • Page 36: Replacing The Sensor Assembly

    Maintenance 客服：400 688 9809 6.4 Replacing the Sensor Assembly The sensor assembly consists of a pre-installed membrane, electrolyte, and electrode. 1. Unscrew the sensor guard or optional lock ring and remove the spent or damaged sensor assembly. 2. Install the o-ring onto the groove in the probe body, see item 2 and 3 in Figure 3.

  • Page 37: Section 7 Troubleshooting

    Section 7 Troubleshooting 客服：400 688 9809 7.1 Error Codes When a sensor is experiencing an error condition, the sensor reading on the measurement screen will flash and all relays and analog outputs associated with this sensor will be held. The following conditions will cause the sensor reading to flash: •...
  • Page 38 客服：400 688 9809 Visit us at www.hach.com...

  • Page 39: Section 8 Replacement Parts

    Section 8 Replacement Parts 客服：400 688 9809 8.1 Replacement Items Description Catalog Number 5740 sc Galvanic Membrane Dissolved Oxygen Sensor 5740D0B Calibration bags 276M1210 Instruction manual, DO System, English 6120018 O-ring, DO probe (0.070 x 0.926 ID) 1857100 Sensor Cartridge, replacement, galvanic membrane DO w/thermistor 6126700 8.2 Accessories Description...
  • Page 40 客服：400 688 9809 Visit us at www.hach.com...

  • Page 41: Section 9 How To Order

    Brief description or model number • Quantity International Customers Hach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send an e-mail to: intl@hach.com or contact: Hach Company World Headquarters; Loveland, Colorado, U.S.A. Telephone: (970) 669-3050; Fax: (970) 669-2932 Technical and Customer Service (U.S.A.

  • Page 42: Section 10 Repair Service

    Section 10 Repair Service 客服：400 688 9809 Authorization must be obtained from Hach Company before sending any items for repair. Please contact the Hach Service Center serving your location. In the United States: Hach Company Ames Service 100 Dayton Avenue Ames, Iowa 50010 (800) 227-4224 (U.S.A.

  • Page 43: Section 11 Limited Warranty

    In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price, excluding original shipping and handling charges.
  • Page 44 客服：400 688 9809 Visit us at www.hach.com...

  • Page 45: Section 12 Compliance Information

    Section 12 Compliance Information 客服：400 688 9809 Hach Co. certifies this instrument was tested thoroughly, inspected and found to meet its published specifications when it was shipped from the factory. The Galvanic Membrane Dissolved Oxygen Probe with the sc100 and sc1000 has...
  • Page 46 Canadian Interference-causing Equipment Regulation, IECS-003, Class A Supporting test records by Hewlett Packard, Fort Collins, Colorado Hardware Test Center (A2LA # 0905-01) and certified compliance by Hach Company. This Class A digital apparatus meets all requirements of the Canadian Interference- Causing Equipment Regulations.
  • Page 47 Appendix A Modbus Register Information 客服：400 688 9809 Table 10 Sensor Modbus Registers Group Name Tag Name Register # Data Type Length Description Tags SensorMeasTag 40001 Integer Sensor Measurement Tag Measurements DOMeas 40002 Float DO Measurement Tags TempMeasTag 40004 Integer Temperature Measurement Tag Measurements TempDegCMeas...
  • Page 48 客服：400 688 9809 Visit us at www.hach.com...
  • Page 49 Index 客服：400 688 9809 Functions ............13 Keypad ..............13 Applications ..............7 List box ..............25 Buttons List box .............. 25 Toolbar .............. 23 Maintenance Schedule ..........35 Menu command Calibration ............19 Marking ............23 Air ..............32 Menu windows ............
  • Page 50 客服：400 688 9809 Visit us at www.hach.com...

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