Hach 8362sc User Manual

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Catalog Number 61780-18

8362 sc High Purity Water Panel

USER MANUAL

May 2005 Edition 2

eac/kt

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Table of Contents

Section 1 Specifications.........................................................................................................................................5

Section 2 General Information............................................................................................................................... 7

2.1 Safety Information............................................................................................................................................... 7

2.2 Precautionary Labels.......................................................................................................................................... 7

2.3 General Product Overview.................................................................................................................................. 8

2.3.1 Measurement Principle.............................................................................................................................. 8

Section 3 Installation ............................................................................................................................................ 11

3.1 Mounting the Panel ........................................................................................................................................... 11

3.2 Preparing for System Measurement ................................................................................................................. 12

3.3 Sample Connections......................................................................................................................................... 13

3.4 Flow Rate and Pressure.................................................................................................................................... 13

3.5 Connecting to the Controller ............................................................................................................................. 13

3.6 Wiring the Probe to the Junction Box................................................................................................................13

Section 4 sc100 Operation ................................................................................................................................... 17

4.1 Using the sc100 Controller...................................... .......................................................................................... 17

4.1.1 sc100 Display Features ........................................................................................................................... 18

4.1.2 Important Key Presses ............................................................................................................................ 18

4.2 Sensor Setup .................................................................................................................................................... 19

4.2.1 Changing the Sensor Name .................................................................................................................... 19

4.3 Sensor Data Logging ........................................................................................................................................ 19

4.3.1 Sensor or Temperature Data Logging ..................................................................................................... 19

4.4 Sensor Diagnostics Menu ................................................................................................................................. 20

4.5 pH Sensor Setup Menu.....................................................................................................................................20

4.6 ORP Sensor Setup Menu.................................................................................................................................. 21

4.7 pH Calibration ................................................................................................................................................... 23

4.7.1 pH Calibration Procedure ........... ... ... .... ... ... ............................................................................................. 23

4.7.2 Buffer Solutions (pH) ............................................................................................................................... 24

4.7.3 Two Point Automatic Calibration Method ................................................................................................. 25

4.7.4 One Point Automatic Calibration Method (optional)................................................................................. 26

4.7.5 Two Point Manual Calibration Method ..................................................................................................... 27

4.7.6 One Point Manual Calibration Method (optional)..................................................................................... 28

4.8 ORP Calibration................................................................................................................................................ 29

4.8.1 ORP Calibration Procedure..................................................................................................................... 29

4.8.2 One-point Manual Calibration.................................................................................................................. 30

4.9 Overflow Sample Method (ASTM Method) Procedure...................................................................................... 30

4.10 Concurrent Calibration of Two Sensors for pH and ORP ................................................................................ 32

4.11 Adjusting the Temperature................................................. ............................................................................. 32

4.11.1 Adjusting the Temperature Procedure............................................. ... ... ... .... ......................................... 32

Section 5 sc1000 Operation................................................................................................................................. 33

5.1 Using the sc1000 Controller.................................... .......................................................................................... 33

5.1.1 Display Features...................................................................................................................................... 33

5.1.1.1 Using the Pop-up Toolbar..............................................................................................................33

5.1.1.2 Using the Menu Windows .............................................................................................................. 33

5.1.1.3 Navigating the Menu Windows .... ... ... ............................................................................................. 34

5.2 Sensor Setup .................................................................................................................................................... 36

5.3 Sensor Data Logging ........................................................................................................................................ 37

5.4 Sensor Diagnostics Menu for pH and ORP....................................................................................................... 37

5.5 pH Sensor Setup Menu.....................................................................................................................................37

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Table of Contents

5.6 ORP Sensor Setup Menu..................................................................................................................................39

5.7 pH Calibration....................................................................................................................................................41

5.7.1 pH Calibration Procedure.................................. ... ... .................................................................................41

5.7.1.1 Buffer Solutions (pH) ......................................................................................................................42

5.7.2 Two Point Automatic Calibration Method..................................................................................................43

5.7.3 One Point Automatic Calibration (optional) ..............................................................................................43

5.7.4 Two Point Manual Calibration Method......................................................................................................44

5.7.5 One Point Manual Calibration Method .....................................................................................................44

5.8 ORP Calibration.................................................................................................................................................45

5.8.1 ORP Calibration Procedure......................................................................................................................45

5.8.2 One-point Manual Calibration Method .....................................................................................................45

5.9 Overflow Sample Method (ASTM Method) Procedure ......................................................................................46

5.10 Concurrent Calibration of Two Sensors for pH and ORP.................................................................................48

5.11 Adjusting the Temperature................. .... ... ... ... .................................................................................................48

Section 6 Maintenance..........................................................................................................................................49

6.1 Cleaning the Instrument....................................................................................................................................49

6.2 Sensor/Electrode Maintenance .........................................................................................................................49

Section 7 Troubleshooting....................................................................................................................................51

Section 8 Replacement Parts and Accessorie s..................................................................................................53

Section 9 How to Order.........................................................................................................................................55

Section 10 Repair Service.....................................................................................................................................56

Section 11 Limited Warranty................................................................................................................................57

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Section 1 Specifications

Specifications are subject to change without notice.

General Components 316 SS back panel with pH or ORP sensor, flowmeter, and junction box Measurement Range

(pH)

2 to 12 pH at 0 to 80 °C (32 to 176 °F)

Measurement Range (ORP)

–1500 to +1500 mV at 0 to 50 °C (32 to 122 °F)

Temperature Range 0 to 80 °C (32 to 176 °F) Accuracy < 0.1 pH or ± 5 mV for ultra pure water Repeatability 0.01 pH/24 hours Flow Rate 100 to 300 mL/min (100 to 300 cc/min) Maximum Pressure 4 bar @ 25 °C (58 psi) Temperature Probe Pt100 Dimensions 304.8 x 384.4 x 165.1 mm (12 x 15.13 x 6.5 in.) Weight 3.6 kg (8 lb) Cable Length 7.7 m (25 ft) supplied Operating Conditions Ambient Temperature 0 to 60 °C (32 to 140 °F) Ambient Humidity 0 to 100% non-condensing

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Section 2 General Information

2.1 Safety Information

Please read this entire manual before unpacking, setting up, or operating this equipment. Pa y attentio n to all danger an d caution state ments. Failur e to do so could result in serious injury to the operator or damage to the equipment.

To ensure that the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual.

Use of Hazard Information

DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury.

Important Note: Information that requires special emphasis.

Note: Information that requires special emphasis.

2.2 Precautionary Labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed

This symbol, if noted on the instrument, references the instruction manual for operation and/or safety information.

Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no charge to the user.

Note: For all electrical products (marked or unmarked) which are supplied or produced by Hach-Lange, please contact the local Hach-Lange sales office for instructions for proper disposal.

This symbol, if noted on the product, indicates the need for protective eye wear.

This symbol, when noted on the product, identifies the location of the connection for Protective Earth (ground).

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General Information

2.3 General Product Overview

DANGER The 8362 sc High Purity Water pH or ORP sensor is not approved for haza rdous locations.

The 8362 sc High Purity Water pH/ORP panel is preplumbed and includes the 8362 sc High Purity Water Sensor (Figure 1), digital electronics junction box, flow meter, and mounting assembly. The 8362 sc High Purity Water pH/ORP Sensor contains two electrodes; one for pH or ORP and the other for temperature.

The water runs through the 8362 sc High Purity Water Sensor then through a flow meter, finally exiting the panel. The flow meter adjusts the sample stream from 0–300 mL/min (0–300 cc/min.). The sensor then sends a mV signal and a temperature signal through separate cords to a junction box which translates the analog pH/ORP and temperature signal from the sensor into a digital signal to be read by the digital controller. Refer to

Specifications on page 5.

The 8362 sc High Purity Wat er panel is a man ufactured panel to simplify and enhance the connection between sensor and controller. It uses a self-pressurizing reference electrode that introduces a constant flow of electro lyte into th e sam ple st r eam. This con sta nt f low of electrolyte reduces the effects of electrolyte oscillations that cause reference junction potential phase shifts that are found in other measuring systems. In addition, the electrodes are housed in a special stainless steel housing and unique conductive flow chamber to greatly reduce the effects of streaming currents that cause pH or ORP measurements in high purity water to drift.

2.3.1 Measurement Principle

This 8362 sc High Purity Water pH/ORP system is specially de sig n ed for continuous measurement of pure and ultra-pure water. It uses a reference electrode similar to the measuring electrode to minimize the impedance of the measurement. The body is made of 316 L stainless steel, which protect s the measurements from electrostatic a nd magnetic disturbances. The circulation chamber was designed without a retention zone to avoid interference from CO

dissolution, air bubble accumulation, or insoluble deposits

accumulation (iron o xide, residues salted out by resins, etc.).

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General Information

Figure 1 8362 Probe Components

1. pH or ORP cable assembly (Cat. No. 359016,10110) 9. Mounting bracket

2. pH (Cat. No. 08362=A=0000) electrode or

ORP (Cat. No. 08362=A=1111) electrode

10. M6 x 10 mm and M6 lock washer screw (2)

3. Electrode support 11. Temp eratur e sensor (Cat. No. 08362=A=1001)

4. Earth ground connection 12. Temp eratur e sensor retaining nut

5. Measurement chamber retaining nut 13. To digital electronics junction box

6. Protective cap 14. Temperature cable assembly

(Cat. No. 08362=A=3001)

7. Measurement chamber 15. To digital electronics junction box

8. Ground screw

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Section 3 Installation

DANGER Only qualified personnel should perform the installation tasks described in this section of the manual.

The panel comes pre-assembled with all the components attached. See Section 5 on

page 15 for replacement parts and accessories.

After unpacking, it is recommended to save the shipping carton and packing materials in case the instrument must be stored or reshipped. Inspect the equipment and packing materials for signs of shipping damage. If there is any evidence of damage, notify the transit carrier immediately.

3.1 Mounting the Panel

1. The panel is mounted to a wall or other hard and stable surface. Choose a conv en ient

location to read the flow meter and to run cables from the controller to the panel and the junction box. Extension cables are available through Hach, refer to Replacement

Parts and Accessories on page 53.

2. Mount the panel by using the four holes at the corners of the panel. Be sure that the panel is securely fa stened to a void injury to persons and equipment. Refer to Figure 2 for mounting dimensions.

3. Earth ground the panel to pr otect it from electrical noise by grounding to the panel or bring ground to the ground screw on the flow chamber.

Note: The digital controller and panel need to be earth ground to the same source.

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Installation

Figure 2 Panel Mounting Dimension

3.2 Preparing for System Measurement

1. Remove the measurement chamber (see Figure 1 on page 9).

2. Remove the protective cap covering the electrode bulb and rinse with demineralized

water or pH buffer for pH measurement or ORP standard solution for ORP measurement. Save the protective cap if the electrode will be stored for long periods of time.

3. Replace the measurement chamber.

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Installation

3.3 Sample Connections

1. Connect the sample stream flow to the sample-in port.

2. Connect a drain tube to the sample-out port.

Note: It is not recommended to run the sample stream back into the main flow stream.

3. Introduce the sample and visually check the measurement chamber for bubbles that could disturb the measurement.

4. Adjust the flow to between 100–300 mL/min (100–300 cc/min) for best results.

3.4 Flow Rate and Pressure

Observe the following for optimum operation:

• Keep the flow constant at a rate between 100–300 mL/min (100–300 cc/min) at a

maximum pressure of 4 bar (58 psi) for best operation.

• Keep the drain line as short as possible to avoid back-pressure.

• Earth ground the flow chamber to protect it from external electrical noise

(Figure 3).

• Do not allow the flow chamber to become empt y. Keep the glass electrode b ulb in

water to avoid electrode damage.

• Use the protective cap filled with KCl (3 M) on the pH or ORP electrode f or storage

of up to one year. Never store your electrod e in air even if it is in the flo w chamber.

3.5 Connecting to the Controller

Connect the extension cable from the controller to the panel with the quick-connection fitting on the side of the junction box (Figure 3). See the controller user manual f or detailed information on configuring and using the controller.

3.6 Wiring the Probe to the Junction Box

Refer to Figure 4 and Table 1 on page 15 when installing new cables from the pH/ORP electrode or temperature sensor to the junction box.

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Installation

Figure 3 Measurement System Electrical Connection to Digital Gateway

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Installation

Figure 4 Junction Box Wiring

Table 1 Junction Box Wiring Information

pH/ORP Electrode Temperature Sensor

Black–Rigid (center) wire = measuring pH or ORP Brown and white wire = Pt100 Green–Copper internal shield = reference Green–Copper external shield= connect to the ground plane of the

transmitter

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Section 4 sc100 Operation

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 2.

Figure 5 Front of the Controller

1. Instrument display 5. IrDA Port

BACK key 6. HOME key

MENU key 7. ENTER key

RIGHT, LEFT, UP, and DOWN keys

Table 2 Controller Key Functions/Features

Number Key Function

2 Moves back one level in the menu structure.

Moves to the main menu from other menus. This key is not active in menus where a selection or other input must be made.

4 Navigates through the menus, changes settings, and increments and decrements digits.

Moves to the Main Measurement screen from any other screen. This key is not active in menus where a selection or other input must be made.

7 Accepts an input value, updates, or accepts displayed menu options.

sc100

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sc100 Operation

4.1.1 sc100 Display Features

When a sensor is connected and the controller is in measurement mode, the controller automatically identifies the connected sensors and displays associated measurements.

The display will flash on st artup, whe n a sensor er ror has occur red, and wh en a sensor is being calibrated.

An active system warning will cause the warning icon (a triangle with an exclamation point inside) to be displayed on the right side of the display. See Figure 6.

Figure 6 Display

4.1.2 Important Key Presses

Note: The following are examples and may not represent exactly what is shown on the screen.

• Press HOME then the RIGHT or LEFT key to display two readings when two sensors are connected. Continue to press the

RIGHT or LEFT key to toggle through the

available display options as shown below.

• Press the

UP and DOWN keys to toggle the status bar at the bottom of the

measurement display to display the secondary measurement (temperature) and output information.

• When in Menu mode, an arr o w may appear on the right side of the display to indicate that more menus are available. Press the

UP or DOWN key (corresponding to the

arrow direction) to display additional menus.

1. Status bar. Indicates the sensor name and status of relays. The relay letter is displayed when the relay is energized.

4. Parameter

2. Main measurement 5. Warning icon area

3. Secondary measurement (if applicable) 6. Measurement units

7.00

SENSOR NAME:

TEMP: 23.0°C

pH pHpH

7.00

SENSOR NAME:

TEMP: 23.0°C

7.00

SENSOR NAME:

OUTPUT1: 12.00 mA

7.00

SENSOR NAME:

OUTPUT2: 12.00 mV

pHpH

SENSOR DIAG SENSOR SETUP

TEST/MAINT

MAIN MENU

SYSTEM SETUP

OUTPUT SETUP

SYSTEM SETUP

NETWORK SETUP

RELAY SETUP

DISPLAY SETUP

SYSTEM SETUP

LOG SETUP

SECURITY SETUP

CALCULATION

SECURITY SETUP

SYSTEM SETUP

CALCULATION

LOG SETUP

ERROR HOLD MODE

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sc100 Operation

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:

4.3 Sensor Data Logging

The data logs store the measurement data at selected intervals. The event log stores a variety of events that occur on the devices such as configuration changes, alarms, and warning conditions. The data logs are stor ed in a pa c ked binary format and the event logs are stored in a CSV format. The logs can be downloaded through the digital network port, service port, or the IrDA port. DataCom is needed for downloading logs to a computer.

4.2.1 Changing the Sensor Name

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 CONFIGURE

5 — EDIT NAME

Select the character to edit. —

Choose the appropriate digit.

4.3.1 Sensor or Temperature Data Logging

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached

4 CONFIGURE

5 LOG SETUP

6 Select SENSOR INTERVAL or TEMP INTERVAL

7 Choose from the displayed options.

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sc100 Operation

4.4 Sensor Diagnostics Menu

SELECT SENSOR

ERROR LIST–See section 7.1 on page 45. WARNING LIST–See section 7.2 on page 45.

4.5 pH Sensor Setup Menu

SELECT SENSOR (if more than one sensor is attached) CALIBRATE

1 POINT AUTO

Calibration with a single buffer — normally pH 7.

2 POINT AUTO

Calibration with two buffers — normally pH 7 and pH 4 or 10.

1 POINT MANUAL

Calibration against a single known sample.

2 POINT MANUAL

Calibration against two samples, both with a known pH.

TEMP ADJUST

Adjust the displayed temperature by up to ± 15 °C.

DEFAULT SETUP

Restores the system to the original factory calibration.

CONFIGURE

EDIT NAME

Enter up to a 10-digit name in any combination of symbols and alpha or numeric characters.

SELECT MEASURE

Select the appropriate measurement units to display.

DISPLAY FORMAT

Select the measurement resolution (xx.xx pH or xx.x pH).

TEMP UNITS

Choose from the displayed options (°C or °F).

LOG SETUP

Choose SENSOR INTERVAL to set sensor log interval or select TEMP INTERVAL to set temperature log interval.

REJECT FREQ

Choose 50 or 60 Hz depending on the power line frequency for optimal noise rejection. Default is 60 Hz.

FILTER

Select 0–60 second signal averaging time.

TEMP ELEMENT

Select type of temperature element from the displayed choices.

SELECT BUFFER

Select the buffer type (standard 4, 7, 10 or DIN 19267) from the displayed choices.

PURE H20 COMP

Allows the user to specify that ammonia, morpholine, or other user-defined electrolyte is being used in the application, allowing a temperature-dependent linear slope factor to be applied to the measured pH.

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sc100 Operation

CONFIGURE (continued)

SELECT BUFFER

Select the buffer type (standard 4, 7, 10 or DIN 19267) from the displayed choices.

PURE H20 COMP

CAL DAYS

Number of days since the last calibration. Default notification at 60 days.

SENSOR DAYS

Number of days the sensor has been in operation. Default notification at 365 days.

DEFAULT SETUP

Resets all user-editable options to their factory-defaults.

DIAG/TEST

PROBE INFO

Displays the sensor type, entered name of the sensor (Default: Digital Gateway serial number and name), the sensor serial number, the software version number, an d the sensor driver version number.

CAL DATA

Displays the pH slope and the date of the last calibration.

SIGNALS

SENSOR SIGNAL: Displays the sensor output in mV SENSOR ADC COUNTS: Displays the sensor ADC counts TEMP ADC COUNTS: Displays raw data for temperature ADC counts. ADC counts are comparable to A/D counts and

are for sensor electronic diagnostic purposes only. ELECTRODE STAT E: Identifies the state of the electrode (good or bad) depending on whether the impedance is within

preset limits. ACTIVE ELECT: Displays the impedance (Mohms) of the active electrode if Imped Status is set to Enabled. IMPED STATUS: Sensor diagnostic. Choose Enabled or Disabled.

COUNTERS

SENSOR DAYS: Displays the cumulative days the sensor has been in use. RESET SENSOR: Allows the sensor counter to be reset to zero. ELECTRODE DAYS: Cumulative days the electrode has been in use.

4.6 ORP Sensor Setup Menu

SELECT SENSOR (if more than one sensor is attached ) CALIBRATE

1 POINT MANUAL

Calibration against a single known sample.

TEMP ADJUST

Adjust the displayed temperature by up to ± 15 °C.

DEFAULT SETUP

Restores the system to the original factory calibration.

4.5 pH Sensor Setup Menu (continued)

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sc100 Operation

CONFIGURE

EDIT NAME

Enter up to a 10-digit name in any combination of symbols and alpha or numeric characters.

SELECT SENSOR

Choose from the displayed sensor type (pH or ORP).

TEMP UNITS

Choose from the displayed options (°C or °F).

LOG SETUP

Choose SENSOR INTERVAL to set the sensor log interval or select TEMP INTERVAL to set the temperature log interval.

AC FREQUENCY

Choose 50 or 60 Hz depending on the power line frequency for optimal noise rejection. Default is 60 Hz.

CONFIGURE (continued)

FILTER

Select 0–60 second signal averaging time.

TEMP ELEMENT

Select type of temperature element from the displayed choices.

CAL DAYS

Number of days since the last calibration. Default notification at 60 days.

SENSOR DAYS

Number of days the sensor has been in operation. Default notification at 365 days.

IMPED LIMITS

Set min/max electrode sensor impedance limits.

DEFAULT SETUP

Resets all user-editable op ti o n s to their factory-defaults.

DIAG/TEST

PROBE INFO

Display the sensor type, entered name of the sensor (Default: sensor serial number), sensor serial number, software version number, and sensor driver version number.

CAL DATA

Displays the slope and the date of the last calibration.

SIGNALS

SENSOR SIGNAL: displays the sensor output in mV SENSOR ADC COUNTS: displays the sensor ADC counts TEMP ADC COUNTS: shows raw data for temperature ADC counts. ADC counts are comparable to A/D counts and are f or

sensor electronic diagnostic purposes only. ELECTRODE STATE: Identifies the state of the electrode (good or bad) depending on whether the impedance is within

preset limits. ACTIVE ELECT: Shows the impedance (Mohms) of the active electrode if Imped Status is set to Enabled. IMPED STATUS: Sensor diagnostic. Choose Enabled or Disabled.

COUNTERS

SENSOR DAYS: displays the cumulative days the sensor has been in use. RESET SENSOR: allows the sensor counter to be reset to zero . ELECTRODE DAYS: Cumulative days the electrode has been in use.

4.6 ORP Sensor Setup Menu (continued)

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sc100 Operation

4.7 pH Calibration

DANGER Handling chemical samples, standards, a nd reagents can be danger ous. Revie w the necessary Material Safety Data Sheets and become familiar with all safety procedures before handling any chemicals.

The manufacture r offers one and two point automatic and manual calibrations for pH. An automatic calibration identifies the buffer table corresponding to the chosen buffer and automatically calibrates the probe after it stabilizes. A manual calibration is performed by placing the pH sensor in any buffer or sample with a known value and then entering that known value into the controller.

The value of the sample used in the manual calibration may be determined by laboratory analysis or comparison reading.

4.7.1 pH Calibration Procedure

For best results with a new sensor , allow sample to flow through the measurement chamber at least 10 hours before calibrating. For precise calibration of the pH electrode, the two point calibration method is required. The manufacturer recommends using a pH 4 and pH 7 buff e r. The pH 7 buffer is required for a first standardization and pH 4 (o r p H 10) buffer solution is required to calibrate the electrode slope. See section 4.7.2 for additional buffer information. Use the buffers as follows:

1. Holding the flow chamber nut in position, unscrew the flow chamber. See Figure 7.

2. Empty the water from the flow chamber and rinse with demineralized water.

3. Rinse the electrodes with demineralized water.

4. Fill the flow chamber with the pH 7 buffer and reinstall. Always use fresh buffers.

5. Calibrate the first point following the Two Point Automatic Calibration Method on

page 25.

6. Remove the flow chamber, empty the first buffer and rinse the flow chamber and electrodes with demineralizedwater.

7. Fill the flow chamber with the pH 4 (or pH 10) buffer and reinstall.

8. Calibrate the second point following the Two Point Automatic Calibration Method on

page 25.

9. Remove the flow chamber, empty the second buffer and rinse the flow chamber and electrodes with demineralized water. Reinstall the flow chamber.

10. Turn on the sample stream to the flow of 100–3 00 mL/min (100–300 cc/ min). Allow the sample to flow through the assembly for a minimum of one hour.

11. Using a qualified standard meter do an overflow method sample measurement, see

Figure 8 on page 31.

12. Compare this read ing with the reading on th e controller. If the reading is different, do a single point sample calibration on the controller so that it reads the same as the standard meter.

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sc100 Operation

Figure 7 Measurement System—Removing the Flow Chamber

4.7.2 Buffer Solutions (pH)

The pH of buffer solutions are dependent on temperature. The nominal pH values are referenced to a temperature of 25 °C (77 °F). Refer to Table 3 for NI ST standard buffer solutions and DIN buffer values for a variety of temperature s. Always check the buff er table for the value of the buffer in use at the operating temperature.

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sc100 Operation

Table 3 NIST and DIN Buffers

Temp (°C)

NIST Buffer DIN Buffer

Buffer 4.00 Buffer 6.88 Buffer 9.00 Buffer 4.00 Buffer 6.88 Buffer 9.00

0 4.01 6.984 9.464 4.05 7.13 9.24

5 4 6.951 9.395 4.04 7.07 9.16 10 4 6.923 9.332 4.02 7.05 9.11 15 4 6.9 9.276 4.01 7.02 9.05 20 4 6.881 9.225 4 7 9 25 4.01 6.865 9.18 4.01 6.98 8.95 30 4.01 6.853 9.139 4.01 6.98 8.91 35 4.02 6.844 9.102 4.01 6.96 8.88 40 4.03 6.838 9.068 4.01 6.85 8.85 45 4.04 6.834 9.038 4.01 6.9 8.82 50 4.06 6.833 9.01 4.01 6.95 8.79 55 — 6.833 8.985 4.01 6.95 8.76 60 — 6.836 8.962 4.01 6.96 8.73 65 — 6.84 8.941 4.01 6.96 8.71 70 — 6.845 8.921 4.01 6.96 8.7 75 — 6.852 8.902 4.01 6.96 8.68 80 — 6.859 8.884 4.01 6.97 8.66 85 — 6.867 8.867 4.01 6.97 8.65 90 — 6.876 8.85 4.09 6.98 8.64 95 — 6.886 8.833 — — —

4.7.3 Two Point Automatic Calibration Method

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 CALIBRATE

5 2 POINT AUTO

OUTPUT MODE

(ACTIVE, HOLD, or TRANSFER)

7a 2 Point Auto. Move Clean Probe to Buffer 1. Press

ENTER to continue.

b 2 Point Auto. Press

ENTER When Stable.

Move Clean Probe to Buffer 2. Press

ENTER to Continue.

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sc100 Operation

c 2 Point Auto. Press ENTER When Stable.

2 Point Auto Complete

Slope: XX.X mV/pH

e Return Probe to Process

8 Main Menu or Main Measurement Screen —

4.7.4 One Point Automatic Calibration Method (optional)

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 CALIBRATE

5 1 POINT AUTO

OUTPUT MODE

(ACTIVE, HOLD, or TRANSFER)

7a 1 Point Auto. Move clean probe to buffer. Press

ENTER to continue.

b 1 Point Auto. Press

ENTER when Stable.

1 Point Auto Complete

Slope: XX.X mV/pH

d Return Probe to Process

8 Main Menu or Main Measurement Screen —

4.7.3 Two Point Automatic Calibration Method (continued)

Step Select Menu Level/Instructions Confirm

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sc100 Operation

4.7.5 Two Point Manual Calibration Method

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 CALIBRATE

5 2 POINT MANUAL CAL

OUTPUT MODE

(ACTIVE, HOLD, or TRANSFER)

7a 2 Point Manual. Move clean probe to Solution 1. Press

ENTER to continue.

—

Press ENTER when Stable

Edit Solution Value

SOLUTION VALUE

(+ X.X mV)

b 2 Point Manual. Move clean probe to Solution 1. Press

ENTER to continue.

—

Press ENTER when Stable

Edit Solution Value

SOLUTION VALUE

(+ X.X mV)

1 Point Manual Cal Complete

Slope: XX,X mV/pH

d Return Probe to Process

8 Main Menu or Main Measurement Screen —

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sc100 Operation

4.7.6 One Point Manual Calibration Method (optional)

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 —CALIBRATE

5 — 1 POINT MANUAL

OUTPUT MODE

(ACTIVE, HOLD, or TRANSFER)

7a 1 Point Manual. Move clean probe to solution. Press ENTER to continue.

b 1 Point Manual. Press

ENTER when stable.

—

Press ENTER when Stable

Edit Solution Value

1 Point Manual Complete

Slope: XX.X mV/pH

d Retur n Probe to Process

8 Main Menu or Main Measurement Screen —

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sc100 Operation

4.8 ORP Calibration

The manufacturer offers a one point manual calibration for ORP. The value of the sample used in the manual calibration may be determined by laboratory analysis or comparison reading.

4.8.1 ORP Calibration Procedure

For a precise calibration of the ORP electrode, a standard solution is required. The manufacturer recommends using a one point standard solution calibration. Use the solution as follows:

1. Holding the flow chamber nut in position, unscrew the flow chamber (Figure 7 on

page 24).

2. Empty the water from the flow chamber and rinse with demineralized water.

3. Rinse the electrodes with demineralized water.

4. Fill flow chamber with the standard solution and reinstall.

5. Calibrate following the one-point calibration method (section 4.8.2).

6. Remove the flow chamber, empty the solution and rinse the flow chamber and

electrodes with demineralizedwater.

7. Reinstall the flow chamber.

8. Turn on the sample stream to the flow of 100–300 mL/min (100–300 cc/min).

9. Allow the sample to flow through the assembly for a minimum of one hour.

10. Using a qualified standard meter do an overflow method sample measurement,

(Figure 8 on page 31).

11. Compare this read ing with the reading on th e controller. If the reading is different, do a single point sample calibration on the controller so that it reads the same as the standard meter.

Page 30

sc100 Operation

4.9 Overflow Sample Method (ASTM Method) Procedure

1. Take a side-stream sample from a tap as close to the 8362 sc High Purity Sensor

as possible.

2. Introduce the sample to the bottom of a large (500 mL) beaker through a clean tube extending to the bottom of the beaker. (Make the tube as short as possible between the beaker and the sample tap.)

3. Place the electrode from the standard meter into the beaker (Figure 8). Allow the beaker to overflow to eliminate the possibility of CO

contamination.

4. Overflow for at least fifteen minutes to allow the standard meter electrode to become clean and the temperature to equilibrate before accepting the reading.

5. Compare this reading with the reading on the con troller . If t he reading is diff erent , do a single point sample calibration on the controller so that it reads the same as the standard meter.

4.8.2 One-point Manual Calibration

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight the appropriate sensor if more than one sensor is attached.

4 —CALIBRATE

5 — 1 POINT MANUAL CAL

OUTPUT MODE

(ACTIVE, HOLD, or TRANSFER)

7a 1 Point Manual. Move clean probe to solution. Press

ENTER to continue.

Press ENTER when Stable

Edit Solution Value

SOLUTION VALUE

(+ X.X mV)

1 Point Manual Complete

Slope: XX.X mV

d Retur n Probe to Process

8 Main Menu or Main Measurement Screen —

Page 31

sc100 Operation

Figure 8 Overflow Sampling

Page 32

sc100 Operation

4.10Concurrent Calibration of Two Sensors for pH and ORP

1. Begin a calibration on the first sensor and continue until “Wait to Stabilize”

is displayed. Press the

BACK key.

2. Highlight LEAVE and press

ENTER. The display will return to the main measurement

screen. The reading for the sensor currently being calibrated will flash.

3. Begin the calibration for the second sensor and continue until “Wait to Stabilize” is displayed. Press the

BACK key.

4. Highlight LEAVE and press

ENTER. The display will return to the main measurement

screen and the reading for both sensors will flash. The calibration for both sensors are now running in the background.

5. To return to the calibration of either sensor, press the

MENU key, highlight SENSOR

SETUP and press

ENTER.

6. Select the appropriate sensor and press

ENTER.

7. The calibration in progress will be displayed. Continue with the calibration.

4.11Adjusting the Temperature

View or change the temperature using the steps below:

4.11.1 Adjusting the Temperature Procedure

Step Select Menu Level/Instructions Confirm

1 MAIN MENU —

2 SENSOR SETUP

3 Highlight sensor of interest if more than one sensor is attached.

4 CALIBRATE

5 TEMP ADJUST

6 MEASURED TEMP

7 — Temperature is displayed (XX.X °C)

8 EDIT TEMP

EDIT TEMP ( +XX.X) °C

(enter new temper ature value)

9 Main Menu or Main Measurement Screen —

Page 33

Section 5 sc1000 Operation

5.1 Using the sc1000 Controller

The sc1000 is a touch screen application. Use your fin ger to touch keys and menu commands. In normal operation the touch screen displays the measured values for the sensors selected.

5.1.1 Display Features

5.1.1.1 Using the Pop-up Toolbar

The pop-up toolbar provides access to the controller and sensor settings. The toolbar is normally hidden from view. To view the toolbar, touch the bottom-left of the screen.

Figure 9 Pop-up Toolbar Functions

5.1.1.2 Using the Menu Windows

If the Menu butt on (from the pop -up toolba r) is selecte d, the Ma in Men u screen is o pened. The Main Menu screen allows the user to view t he sensor status, configure the sensor setup, system setup, and perform diagnostics.

The menu structure may vary depending on the configuration of the system.

MAIN MENU–displays the Main Menu Structure

UP Arrow–scrolls up to the previous displayed value.

Displays one value.

Displays two values at the same time.

Displays four values at the same time.

LIST–displays the list of connected devices and sensors.

DOWN Arrow–scro lls down to the next displayed val u e.

1 2 4

Page 34

sc1000 Operation

Figure 10 Main Menu

5.1.1.3 Navigating the Menu Windows

To view a menu item, touch the menu item or use the UP and DOWN keys to highlight the item. The menu item remains highlighted for approximately 4 seconds after it is selected. To view the highlighted command, select the area to the le ft of the me nu ite m or select the

ENTER button.

A “+” next to a menu command indicates there is a submenu. Touch the “+” to view the submenu. An “i” next to a menu command indicates it is information only.

If a menu item is editable, highlight the item and touch the far-l eft part of the menu item until it is highlighted and press

ENTER or double-tap the highligh ted item. A k e ypad will be

displayed to change an entry (Figure 12 on page 35 ) or a list box will be displayed (Figure 13 on page 36).

Messages are displayed in the message window (Figure 14 on page 36). If an entry is incorrect, repeat the entry with the correct values. If the entry is outside the

working range, a correction to the entry is made automatically.

1. Display Area

BACK

3. FORWARD

4. ENTER–confirms the entry or selection.

HOME–changes to the display of measured values. The pop-up toolbar cannot open from the menu window. To view the

Main Menu from this display, touch the Home button and then the bottom of the screen.

UP–scrolls up

DOWN–scrolls down

SENSOR STATUS SENSOR SETUP SYSTEM SETUP TEST/MAINT

Page 35

sc1000 Operation

Figure 11 Changing a Menu Item

Figure 12 Keypad

1. Display Area 5. HOME–changes to the display of measured values.

BACK 6. UP–scrolls up

FORWARD 7. DOWN–scrolls down

ENTER–confirms the entry or selection.

1. Enters numbers or the character as shown on the button.

2. Moves the cursor one position to the left or to the right.

3. Increase/Decrease a number or letter at the cursor position. Keep the button pressed to change the numbers/characters

continuously.

4. Deletes the character to the left of the cursor.

CANCEL–cancels the entry.

ENTER–confirms the entry or selection.

1 2 3 : 4 5 6 / 7 8 9 0

1 3

Page 36

sc1000 Operation

Figure 13 List Box

Figure 14 Message windo w

5.2 Sensor Setup

When a sensor is initially installed, the serial number of the sensor be displayed as the sensor name. To change the sensor name refer to the following instructions:

1. Tap the bottom-left of the scr een to display the pop-up toolbar and press

MAIN MENU.

2. From the Main Menu, select SENSOR SETUP and press

ENTER.

3. Highlight the appropriate sensor if more than one sensor is attached and press

ENTER.

4. Select CONFIGURE and press

ENTER.

5. Select EDIT NAME and tap on the dark-blue highlighted area to the far-right. Use the

keypad to edit the name. Press

ENTER to confirm or Cancel to return to the Sensor

Setup menu.

1. Scrolls up or down

CANCEL–cancels and entry.

ENTER–confirms a selection.

1. Scrolls up or down.

2. Displays the messages or warnings.

3. Displays details on the selected entry.

4. This button changes back to the previous display.

ENTER–confirms an entry.

CANCEL–cancels an entry.

mg/l g/l ppm mE E m-1 FNU NTU

COMMUNICATION ERROR

Ph [11f20030007]

Page 37

sc1000 Operation

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. Highlight the appropriate sensor if more than one sensor is attached and press

ENTER.

4. Select CONFIGURE and press

ENTER.

5. Select LOG SETUP and press

ENTER.

6. Select SENSOR INTERVAL or TEMP INTERVAL and tap on the dark-b lue highlight ed

area to the far-right.

7. Select from the display options from the list box and press

ENTER.

5.4 Sensor Diagnostics Menu for pH and ORP

SELECT SENSOR

ERROR LIST–See section 7.1 on page 45. WARNING LIST–See section 7.2 on page 45.

5.5 pH Sensor Setup Menu

SELECT SENSOR (if more than one sensor is attached ) CALIBRATE

1 POINT AUTO

Calibration with a single buffer — normally pH 7.

2 POINT AUTO

Calibration with two buffers — normally pH 7 and pH 4 or 10.

1 POINT MANU AL

Calibration against a single known sample.

2 POINT MANU AL

Calibration against two samples, both with a known pH.

TEMP ADJUST

Adjust the displayed temperature by up to ± 15 °C.

DEFAULT SETUP

Restores the system to the original factory calibration.

Page 38

sc1000 Operation

CONFIGURE

EDIT NAME

Enter up to a 10-digit name in any combination of symbols and alpha or numeric characters.

SELECT MEASURE

Select the appropriate measurement units to display.

DISPLAY FORMAT

Select the measurement resolution (xx.xx pH or xx.x pH).

TEMP UNITS

Choose from the displayed options (°C or °F).

LOG SETUP

Choose SENSOR INTERVAL to set the sensor log interval or select TEMP INTERVAL to set the temperature log interval.

REJECT FREQ

Choose 50 or 60 Hz depending on the power line frequency for optimal noise rejection. Default is 60 Hz.

FIL TER

Select 0–60 second signal averaging time.

TEMP ELEMENT

Select type of temperature element from the displayed choices.

SELECT BUFFER

Select the buffer type (standard 4, 7, 10 or DIN 19267) from the displayed choices.

PURE H20 COMP

CAL DAYS

Number of days since the last calibration. Default notification at 60 days.

SENSOR DAYS

Number of days the sensor has been in operation. Default notification at 365 days.

DEFAULT SETUP

Resets all user-editable options to their factory-defaults.

5.5 pH Sensor Setup Menu (continued)

Page 39

sc1000 Operation

DIAG/TEST

PROBE INFO

Display the sensor type, entered name of the sensor (Default: Digital Gateway serial number and name), the sensor serial number, the software version number, and the sensor driver version number.

CAL DATA

Displays the pH slope and the date of the last calibration.

SIGNALS

are for sensor electronic diagnostic purposes only. ELECTRODE STATE: Identifies the state of the electrode (good or bad) depending on whether the impedance is within

preset limits. ACTIVE ELECT: Displays the impedance (Mohms) of the active electrode if Imped Status is set to Enabled. IMPED STATUS: Sensor diagnostic. Choose Enabled or Disabled.

COUNTERS

SENSOR DAYS: Displays the cumulative days the sensor has been in use. RESET SENSOR: Allows the sensor counter to be reset to zero. ELECTRODE DAYS: Cumulative days the electrode has been in use.

5.6 ORP Sensor Setup Menu

SELECT SENSOR (if more than one sensor is attached ) CALIBRATE

1 POINT MANUAL

Calibration against a single known sample.

TEMP ADJUST

Adjust the displayed temperature by up to ± 15 °C.

DEFAULT SETUP

Restores the system to the original factory calibration.

CONFIGURE

EDIT NAME

Enter up to a 10-digit name in any combination of symbols and alpha or numeric characters.

SELECT SENSOR

Choose from the displayed sensor type (pH or ORP).

TEMP UNITS

Choose from the displayed options (°C or °F).

LOG SETUP

Choose SENSOR INTERVAL to set the sensor log interval or select TEMP INTERVAL to set the tempera ture log interval.

AC FREQUENCY

Choose 50 or 60 Hz depending on the power line frequency for optimal noise rejection. Default is 60 Hz.

5.5 pH Sensor Setup Menu (continued)

Page 40

sc1000 Operation

CONFIGURE (continued)

FIL TER

Select 0–60 second signal averaging time.

TEMP ELEMENT

Select type of temperature element from the displayed choices.

CAL DAYS

Number of days since the last calibration. Default notification at 60 days.

SENSOR DAYS

Number of days the sensor has been in operation. Default notification at 365 days.

IMPED LIMITS

Set min/max electrode sensor impedance limits.

DEFAULT SETUP

Resets all user-editable options to their factory-defaults.

DIAG/TEST

PROBE INFO

Display the sensor type, entered name of the sensor (Default: Digital Gatewa y serial number and name), the sensor serial number, the software version number, and the sensor driver version number.

CAL DATA

Displays the slope and the date of the last calibration.

SIGNALS

sensor electronic diagnostic purposes only. ELECTRODE STATE: Identifies the state of the electrode (good or bad) depending on whether the impedance is within

preset limits. ACTIVE ELECT: Shows the impedance (Mohms) of the active electrode if Imped Status is set to Enabled. IMPED STATUS: Sensor diagnostic. Choose Enabled or Disabled.

COUNTERS

SENSOR DAYS: displays the cumulative days the sensor has been in use. RESET SENSOR: allows the sensor counter to be reset to zero. ELECTRODE DAYS: Cumulative days the electrode has been in use.

5.6 ORP Sensor Setup Menu (continued)

Page 41

sc1000 Operation

5.7 pH Calibration

The value of the sample used in the manual calibration may be determined by laboratory analysis or comparison reading.

5.7.1 pH Calibration Procedure

Note: For best results with a new sensor , allow sample to flow through the measurement chamber at least 10 hours before calibrating.

For precise calibration of the pH electrode, the two point calibration method is required. The manufacture r recommends using pH 4 and pH 7 b uff er. The pH 7 buffer is required fo r a first standardization and pH 4 (or pH 10) buffer solution is required to calibrate the electrode slope. See section 5.7.1.1 for additional buffer information. Use the buffers as follows:

1. Holding the flow chamber nut in position, unscrew the flow chamber. See Figure 15.

2. Empty the water from the flow chamber and rinse with demineralized water.

3. Rinse the electrodes with demineralized water.

4. Fill the flow chamber with the pH 7 buffer and reinstall. Always use fresh buffers.

5. Calibrate the first point using the Two Point Automatic Calibration Method on page 43.

6. Remove the flow chamber, empty the first buffer and rinse the flow chamber and

electrodes with demineralizedwater.

7. Fill the flow chamber with the pH 4 (or pH 10) buffer and reinstall.

8. Calibrate the second point using the Two Point Automatic Calibration Method on

page 43.

9. Remove the flow chamber, empty the second buffer and rinse the flow chamber and electrodes with demineralized water. Reinstall the flow chamber.

10. Turn on the sample stream to the flow of 100–3 00 mL/min (100–300 cc/ min). Allow the sample to flow through the assembly for a minimum of one hour.

11. Using a qualified standard meter do an overflow method sample measurement, (Figure 16 on page 47).

12. Compare this read ing with the reading on th e controller. If the reading is different, do a single point sample calibration on the controller so that it reads the same as the standard meter.

Page 42

sc1000 Operation

Figure 15 Measurement System—Removing the Flow Chamber

5.7.1.1 Buffer Solutions (pH)

The pH of buffer solutions are dependent on temperature. The nominal pH values are referenced to a temperature of 25 °C (77 °F). Refer to Table 4 for NI ST standard buffer solutions and DIN buffer values for a variety of temperature s. Always check the buff er table for the value of the buffer in use at the operating temperature.

Table 4 NIST and DIN Buffers

Temp (°C)

NIST Buffer DIN Buffer

Buffer 4.00 Buffer 6.88 Buffer 9.00 Buffer 4.00 Buffer 6.88 Buffer 9.00

0 4.01 6.984 9.464 4.05 7.13 9.24

Page 43

sc1000 Operation

5.7.2 Two Point Automatic Calibration Method

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. Select CALIBRATE and press

ENTER.

5. Select 2 POINT AUTO and tap the dark-blue highlighted area to the far-right. Select

the available Output Mode (Active, Hold, or Transfer) from the list box and press

ENTER.

6. Move the clean probe to Buffer 1 and press

ENTER to confirm.

7. Press

ENTER when stable.

8. Move the clean probe to Buffer 2 and press

ENTER to confirm.

9. Press

ENTER when stable. A screen will display 2 Point Calibration Complete and the

slope (XX.X mV/pH).

10. Return the probe to process.

5.7.3 One Point Automatic Calibration (optional)

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. Select CALIBRATE and press

ENTER.

5. Select 1 POINT AUTO and tap the dark-blue highlighted area to the far-right. Select

the available Output Mode (Active, Hold, or Transfer) from the list box and press

ENTER.

6. Move the clean probe to buffer and press

ENTER to continue.

60 — 6.836 8.962 4.01 6.96 8.73 65 — 6.84 8.941 4.01 6.96 8.71 70 — 6.845 8.921 4.01 6.96 8.7 75 — 6.852 8.902 4.01 6.96 8.68 80 — 6.859 8.884 4.01 6.97 8.66 85 — 6.867 8.867 4.01 6.97 8.65 90 — 6.876 8.85 4.09 6.98 8.64 95 — 6.886 8.833 — — —

Table 4 NIST and DIN Buffers (continued)

Temp (°C)

NIST Buffer DIN Buffer

Buffer 4.00 Buffer 6.88 Buffer 9.00 Buffer 4.00 Buffer 6.88 Buffer 9.00

Page 44

sc1000 Operation

7. Press ENTER when stable. A screen will display 1 P o int Auto Complete and the slope

(XX.X mV/pH).

8. Return the probe to process.

5.7.4 Two Point Manual Calibration Method

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. Select CALIBRATE and press

ENTER.

5. Select 2 POINT MANUAL CAL and tap the dark-blue highlighted area to the far-right.

Select the available Output Mode (Active, Hold, or Transfer) from the list box and press

ENTER.

6. Move the clean probe to Solution 1 and press

ENTER to confirm.

7. Press enter when stable. Edit the solution value using the keypad and press

ENTER.

8. Move probe to solution 1 and press

ENTER.

9. Press enter when stable. Edit the solution value using the keypad and press

ENTER.

10. A screen will display 2 Point Manual Cal Complete and the slope (XX.X mV/pH).

11. Return the probe to process.

5.7.5 One Point Manual Calibration Method

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. Select CALIBRATE and press

ENTER.

5. Select 1 POINT MANUAL and tap the dark-blue highlighted area to the far-right.

Select the available Output Mode (Active, Hold, or Transfer) from the list box and press

ENTER.

6. Move the clean probe to solution and press

ENTER to continue.

7. Press enter when stable. Edit the solution value using the keypad and press

ENTER.

8. Press

ENTER when stable. A screen will display 1 Point Manual Complete and the

slope (XX.X mV/pH).

9. Return the probe to process.

Page 45

sc1000 Operation

5.8 ORP Calibration

5.8.1 ORP Calibration Procedure

For a precise calibration of the ORP electrode, a standard solution is required. The manufacturer recommends using a one point standard solution calibration. Use the solution as follows:

1. Holding the flow chamber nut in position, unscrew the flo w chamber . See Fig ure 15 on

page 42.

2. Empty the water from the flow chamber and rinse with demineralized water.

3. Rinse the electrodes with demineralized water.

4. Fill flow chamber with the standard solution and reinstall.

5. Calibrate following the one-point calibration method (section 5.8.2 on page 45).

6. Remove the flow chamber, empty the solution and rinse the flow chamber and

electrodes with demineralized water. Reinstall the flow chamber.

7. T urn on the sample stream t o the flow of 100–300 mL/min (100– 300 cc/min). Allo w the sample to flow through the assembly for a minimum of one hour.

8. Using a qualified standard meter do an overflow method sample measurement, (Figure 16 on page 47).

9. Compare this reading with the reading on the controller . If the re ading is diff erent, do a single point sample calibration on the controller so that it reads the same as the standard meter.

5.8.2 One-point Manual Calibration Method

The manufacturer offers a one point manual calibration for ORP. The value of the sample used in the manual calibration may be determined by laboratory analysis or comparison reading.

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. Select CALIBRATE and press

ENTER.

5. Select 1 POINT MANUAL CAL and tap the dark-blue highlighted area to the far-right.

Select the availab le Output Mode (Activ e, Hold, or Transfer) from the list bo x and press

ENTER.

6. Move the clean probe to Solution and press

ENTER to confirm.

7. Press enter when stable. Edit the solution valu e using the keypad and press

ENTER.

8. A screen will display 1 Point Manual Complete and the slope (XX.X mV).

9. Return the probe to process.

Page 46

sc1000 Operation

5.9 Overflow Sample Method (ASTM Method) Procedure

1. Take a side-stream sample from a tap as close to the 8362 sc High Purity Sensor

as possible.

3. Place the electrode from the standard meter into the beaker (Figure 16). Allow the beaker to overflow to eliminate the possibility of CO

contamination.

4. Overflow for at least fifteen minutes to allow the standard meter electrode to become clean and the temperature to equilibrate before accepting the reading.

5. Compare this reading with the reading on the con troller . If t he reading is diff erent , do a single point sample calibration on the controller so that it reads the same as the standard meter.

Page 47

sc1000 Operation

Figure 16 Overflow Sampling

Page 48

sc1000 Operation

5.10Concurrent Calibration of Two Sensors for pH and ORP

1. Begin a calibration on the first sensor and continue until “Wait to Stabilize”

is displayed.

2. Select LEAVE and press

ENTER. The display will return to the main measurement

screen. The reading for the sensor currently being calibrated will flash.

3. Begin the calibration for the second sensor and continue until “Wait to Stabilize” is displayed.

4. Select LEAVE and press

ENTER. The display will return to the main measurement

screen and the reading for both sensors will flash. The calibration for both sensors are now running in the background.

5. To return to the calibration of either sensor, tap on the bottom of the screen to display the pop-up toolbar. Select the Main Menu button. Select SENSOR SETUP and press

ENTER. Select teh appropriate sensor and press ENTER.

6. The calibration in progress will be displayed. Continue with the calibration.

5.11Adjusting the Temperature

View or change the temperat ure using the steps below:

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. Select CALIBRATE and press

ENTER.

5. Select TEMP ADJUST and press

ENTER.

6. Select MEASURED TEMP and press

ENTER.

7. The temperature will be displayed. Tap on the temperature and edit the temperature

using the keypad and press

ENTER.

Page 49

Section 6 Maintenance

DANGER Only qualified personnel should conduct the tasks described in this section of the manual.

6.1 Cleaning the Instrument

With the junction box securely closed, wipe the exterior with a damp cloth.

6.2 Sensor/Electrode Maintenance

Store the electrode in KCl solution to avoid damage during long term storage. Carefully clean the electrode monthly with a soft, non-abrasive cloth. The manufacturer recommends recalibrating the sensor once a month.

Page 50

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Page 51

Section 7 Troubleshooting

Table 5 General Troubleshooting

Symptom Probable Cause Corrective Action

The electrode does not calibrate.

Bad measuring or referenc e elec t r od e. Replace defective electrode.

The wiring to the controller is incorrect.

Check the electrode cable to controller wiring. Make sure the wire connectors are contacting the metal wires and not the wire insulation.

The controller is defective. Replace the controller.

The readings are erratic.

Air in the sample line.

If a pocket of air passes over or gets trapped at the end of the electrode, the readi ng be co me s momentarily erratic. This usually is remedied by reorienting the electrode so that air bubbles do not block the sensor.

Electrode grounded improperly.

Refer to the sensor user manual for proper grounding.

The glass bulb is defective. Replace the electrode. Streaming potential

Ground the solution near the electrode (especially in high purity water).

The response is slow.

The sample is cold and/or of low ionic strength.

Raise the temperature of the sample.

Short ter m drift in the pH reading.

The electrode has insufficient conditioning.

Condition a new or dry electrode for at least 10 hours in the process sample. Perform a calibration after conditioning.

Page 52

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Page 53

Section 8 Replacement Parts and Accessories

Description Catalog Number

4 pH solution, NIST, 500 mL 2283449 7 pH solution, NIST, 500 mL 2283549 10 pH solution, NIST, 500 mL 2283649 Controller extension cable, 1 m (3.2 ft) 6122400 Controller extension cable, 7.6 m (25 ft) 57960–00 Controller extension cable, 15.2 m (50 ft) 5796100 Controller extension cable, 30.5 m (100 ft 57962–00 Flowmeter 4598700 Fitting, ¼ OD, 1/8 NPT, male connector 6178800 Fitting, ¼ OD, ¼ NPT, bulkhead union 6178600 ORP electrode 08362=A=2111 ORP reference solution, 200 mV, 500 mL 25M2A1001-115 pH electrode 08362=A=2000 pH/ORP electrode cable, 3 m 359016,10110 ORP reference solution, 600 mV, 500 mL 25M2A1002-115 Pt100 cable, 3 m 08362=A=3001 Pt100 temperature sensor 08362=A=1001 Tube, back 6178700 Tube, front 6178900 Tub e connectors,

8-in NPT, 2 each 08362=A=4000

Page 54

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Page 55

Section 9 How to Order

U.S.A. Customers

By Telephone:

6:30 a.m. to 5:00 p.m. MST Monday through Friday (800) 227-HACH (800-227-4224)

By Fax:

(970) 669-2932

By Mail:

Hach Company P.O. Box 389 Loveland, Colorado 80539-0389 U.S.A.

Ordering information by e-mail: orders@hach.com

Information Required

International Customers

Hach maintains a worldwide network of dealers and distrib utors. To locate the representative neare st you, send an e-mail to: intl@hach.com or contact:

Hach Company World Headquar ters; Loveland, Colorado, U.S.A. Telephone: (970) 669-3050; Fax: (970) 669-2932

Technical and Customer Service (U.S.A. only)

Hach Technical and Customer Service Department personnel are eager to answer questions about our products and their use. Specialists in analytical methods, they are happy to put their talents to work for you .

Call 1-800-227-4224 or e-mail techhelp@hach.com

• Hach account number (if available) • Billing address

• Your name and phone number • Shipping address

• Purchase order number • Catalog number

• Brief description or model number • Quantity

Page 56

Section 10 Repair Service

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. only) FAX: (515) 232-3835

In Canada:

Hach Sales & Service Canada Ltd. 1313 Border Street, Unit 34 Winnipeg, Manitoba R3H 0X4 (800) 665-7635 (Canada only) Telephone: (204) 632-5598 FAX: (204) 694-5134 E-mail: canada@hach.com

In Latin America, the Caribbean, the Far East

Indian Subcontinent, Africa, Europe, or the Middle East: Hach Company World Headquarters, P.O. Box 389 Loveland, Colorado, 80539-0389 U.S.A. Telephone: (970) 669-3050 FAX: (970) 669-2932 E-mail: intl@hach.com

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Section 11 Limited Warranty

Hach Company warrants its products to the original purchaser against any defects that are due to faulty material or workmanship for a period of *one year* from date of shipment unless otherwise noted in the product manual.

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. Any product repaired or replaced under this warranty will be warranted only for the remainder of the original product warranty period.

This warranty does not apply to consumable products such as chemical reagents; or consumable components of a product, such as, but not limited to, lamps and tubing.

Contact Hach Company or your distributor to initiate warranty support. Products may not be returned without authorization from Hach Company.

Limitations

This warranty does not cover:

• Damage caused by acts of God, natural disaster, labor unrest, acts of war (declared or undeclared), terrorism, civil strife or acts of any governmental jurisdiction

• Damage caused by misuse, neglect, accident or improper application or installation

• Damage caused by any repair or attempted repair not authorized by Hach Company

• Any product not used in accordance with the instructions furnished by Hach Company

• Freight charges to return merchandise to Hach Company

• Freight charges on expedited or express shipment of warranted parts or product

• Travel fees associated with on-site warranty repair

This warranty contains the sole express warranty made by Hach Company in connection with its products. All implied warranties , including without limitat ion, the warr anties of merchantability and fitness for a particular purpose, are expressly disclaimed.

Some states within the United States do not allow the disclaimer of implied warranties and if this is true in your state the above limitation may not apply to you. This warranty gives you specific rights, and you may also have other rights that vary from state to state.

This warranty constitutes the final, complete, and exclusive statement of warranty terms and no person is authorized to make any other warranties or representations on behalf of Hach Company.

Limitation of Remedies

The remedies of repair, replacement or refund of purchase price as stated above are the exclusive remedies for the breach of this warranty. On the basis of strict liability or under any other legal theory, in no event shall Hach Company be liable for any incidental or consequential damages of any kind for breach of warranty or negligence.

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