Hach 8362sc User manual

Catalog Number 61780-18

8362 sc High Purity Water Panel

USER MANUAL

May 2005 Edition 2

eac/kt

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3

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 Accessories..................................................................................................53

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

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

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

5

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.

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.

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).

8

General Information

2.3 General Product Overview

DANGER

The 8362 sc High Purity Water pH or ORP sensor is not approved for hazardous

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 Water panel is a manufactured panel to simplify and enhance the

connection between sensor and controller. It uses a self-pressurizing reference electrode

that introduces a constant flow of electrolyte into the sample stream. This constant flow 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 designed 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 protects the measurements from electrostatic and magnetic

disturbances. The circulation chamber was designed without a retention zone to avoid

interference from CO

2

dissolution, air bubble accumulation, or insoluble deposits

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

9

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. Temperature sensor (Cat. No. 08362=A=1001)

4. Earth ground connection 12. Temperature 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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11

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 convenient

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 fastened to avoid injury to persons and equipment. Refer to Figure 2

for mounting dimensions.

3. Earth ground the panel to protect 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.

12

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.

13

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 empty. Keep the glass electrode bulb in

water to avoid electrode damage.

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

of up to one year. Never store your electrode in air even if it is in the flow 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 for 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.

14

Installation

Figure 3 Measurement System Electrical Connection to Digital Gateway

15

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

2.

BACK key 6. HOME key

3.

MENU key 7. ENTER key

4.

RIGHT, LEFT, UP, and DOWN keys

Table 2 Controller Key Functions/Features

Number Key Function

2 Moves back one level in the menu structure.

3

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.

6

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

1

2

6

5

3

7

4

18

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 startup, when a sensor error has occurred, and when 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 arrow 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:

pH

TEMP: 23.0°C

1

2

3

6

5

4

pH pHpH

7.00

SENSOR NAME:

TEMP: 23.0°C

7.00

SENSOR NAME:

OUTPUT1: 12.00 mA

pH

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

19

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 stored in a packed 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

6

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.

20

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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