Hach 6120118 user manual Digital Gateway, Operating Precaution

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General Information

Figure 3 Insertion Style Sensor with Domed Electrode

22.2 mm (0.875 inches)

149.9 mm (5.9 inches)

Figure 4 Sanitary-style Sensor

22.2 mm (0.875 inches)

49.1 mm (1.96 inches)

22 mm (0.87 inches)

88.9 mm (3.5 inches)

187.3 mm (7.37 inches)

2.3 The Digital Gateway

The digital gateway was developed to provide a means to use existing analog sensors with the new digital controllers. The gateway contains all the necessary software and hardware to interface with the controller and output a digital signal.

2.4 Operating Precaution

Before placing the pH or ORP sensor into operation, remove the protective cap to expose the process electrode and reference junction. Save the protective cap for future use.

For short-term storage (when sensor is out of the process for more than one hour), fill the protective cap with pH 4 buffer or DI water and place the cap back on the sensor. Keeping the process electrode and reference junction moist will avoid slow response when the sensor is placed back in operation.

For extended storage, repeat the short-term storage procedure every 2 to 4 weeks, depending on the surrounding environmental conditions.

CAUTION

If the pH process electrode breaks, handle the sensor very carefully to prevent injury.

The process electrode at the pH sensor tip has a glass bulb, which can break. Do not subject this electrode to abrupt impact or other mechanical abuse.

The gold or platinum process electrode at the ORP sensor tip has a glass shank (hidden by the salt bridge) which can break. Do not subject this electrode to impact or other mechanical abuse.

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Contents Digital PC sc and RC sc ¾-inch Combination pH/ORP Sensor Page Table of Contents Table of Contents Specifications Combination pH and ORP Sensor SpecificationsDigital Gateway Specifications Page Precautionary Labels Safety InformationGeneral Information Use of Hazard InformationGeneral Sensor Information General InformationSensor Body Styles Digital Gateway Operating PrecautionPage Wiring the sc Sensor to the Digital Gateway Section InstallationProper Wire Preparation and Insertion InstallationWiring the Digital Gateway Cat. No Hard-wiring the Digital Gateway to the sc100 Terminal Number Terminal Designation Wire Color Wiring the Sensor at Terminal Block J5Connecting the Sensor using the Quick-connect Fittings Connecting the Sensor to the sc1000Mounting the Digital Gateway Digital Gateway DimensionsPage Controller Key Functions/Features Using the sc100 ControllerUser Interface and Navigation Number Key FunctionUser Interface and Navigation Controller Display Features Important Key PressesDisplay Using the sc1000 Controller Display FeaturesUser Interface and Navigation Main Menu Navigating the Menu WindowsKeypad Message window List BoxSensor Diagnostics Menu for pH and ORP Sensor SetupPH Sensor Setup Menu OperationOperation ConfigureAC Frequency ORP Sensor Setup MenuPH Calibration One Point Automatic CalibrationTwo Point Automatic Calibration Two Point Manual Calibration Operation One Point Manual CalibrationORP Calibration Concurrent Calibration of Two Sensors for pH and ORPOne-point Manual Calibration Adjusting the Temperature Page Maintenance Schedule MaintenanceMaintenance Cleaning the SensorError Codes TroubleshootingTroubleshooting the pH or ORP Sensor Error CodesPage Replacement Items, Accessories, and Reagent and Standards Replacement Parts and AccessoriesItem Description Catalog NumberPage Technical and Customer Service U.S.A. only How to OrderA. Customers Information RequiredCanada Repair ServiceLimited Warranty LimitationsLimitation of Remedies Page Compliance Information Product SafetyImmunity EmissionsCompliance Information FCC Part 15, Class a LimitsAppendix a Modbus Register Information Sensor Modbus RegistersGroup Name Tag Name Register Data Length Description Type Modbus Register Information Appendix B General pH Information PH Measurement TheoryWhere General pH Information PID Controller BasicsDerivative IntegralPage Index