Rosemount 1054B-CL Free Residual Chlorine Microprocessor Analyzer Manuals & Guides

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Model 1054B CL

Free Residual Chlorine Microprocessor Analyzer

Instruction Manual

PN 51-1054BCL/rev.B April 2003

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WARNING

ELECTRICAL SHOCK HAZARD

Making cable connections to and servicing this instrument require access to shock hazard level voltages which can cause death or serious injury .

Be sure to disconnect all hazardous voltage before opening the enclosure.

Relay contacts made to separate power sources must be disconnected before servicing.

Electrical installation must be in accordance with the National Electrical Code (ANSI/NFPA-

70) and/or any other applicable national or local codes.

Unused cable conduit entries must be securely sealed by non-flammable closures to provide enclosure integrity in compliance with personal safety and environmental protection requirements.

The unused conduit openings need to be sealed with NEMA 4X or IP65 conduit plugs to maintain the ingress protection rating (IP65).

For safety and proper performance this instrument must be connected to a properly grounded three-wire power source.

Proper relay use and configuration is the responsibility of the user.

No external connection to the instrument of more than 69VDC or 43V peak allowed with the exception of power and relay terminals. Any violation will impair the safety protection provided

Do not operate this instrument without front cover secured. Refer installation, operation and servicing to qualified personnel..

ESSENTIAL INSTRUCTIONS

READ THIS PAGE BEFORE PRO-

CEEDING!

Rosemount Analytical designs, manufactures, and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications. The following instructions must be adhered to and integrated into your safety program when installing, using, and maintaining Rosemount Analytical products. Failure to follow the proper instructions may cause any one of the following situations to occur: Loss of life; personal injury; property damage; damage to this instrument; and warranty invalidation.

• Read all instructions prior to installing, operating, and servicing the product. If this Instruction Manual is not the correct manual, telephone 1-949-757-8500 and the requested manual will be provided. Save this Instruction Manual for future reference.

• If you do not understand any of the instructions, contact your Rosemount representative for clarification.

• Follow all warnings, cautions, and instructions marked on and supplied with the product.

• Inform and educate your personnel in the proper installation, operation, and maintenance of the product.

• Install your equipment as specified in the Installation Instructions of the appropriate Instruction Manual and per applicable local and national codes. Connect all products to the proper electrical and pressure sources.

• To ensure proper performance, use qualified personnel to install, operate, update, program, and maintain the product.

• When replacement parts are required, ensure that qualified people use replacement parts specified by Rosemount. Unauthorized parts and procedures can affect the product’s performance and place the safe operation of your process at risk. Look alike substitutions may result in fire, electrical hazards, or improper operation.

• Ensure that all equipment doors are closed and protective covers are in place, except when maintenance is being performed by qualified persons, to prevent electrical shock and personal injury.

ARNING

This product is not intended for use in the light industrial, residential or commercial environment, per the instrument’s certification to EN50081-2.

Emerson Process Management Rosemount Analytical Inc.

2400 Barranca Parkway Irvine, CA 92606 USA Tel: (949) 757-8500 Fax: (949) 474-7250

http://www.RAuniloc.com

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MODEL 1054B CL TABLE OF CONTENTS

MODEL 1054B CL

MICROPROCESSOR ANALYZER

TABLE OF CONTENTS

Section Title Page

1.0 DESCRIPTION AND SPECIFICATIONS................................................................. 1

1.1 Features and Applications....................................................................................... 1

1.2 Physical Specifications - General............................................................................ 2

1.3 Analyzer Specifications @ 25°C.............................................................................. 2

1.4 Recommended Sensors.......................................................................................... 2

1.5 Ordering Information................................................................................................ 3

2.0 INSTALLATION........................................................................................................ 4

2.1 General.................................................................................................................... 4

2.2 Unpacking and Inspection ....................................................................................... 4

2.3 Installation................................................................................................................ 4

2.4 Electrical Connections - General............................................................................. 10

2.5 Sensor Wiring.......................................................................................................... 12

3.0 DESCRIPTION OF CONTROLS............................................................................. 14

3.1 Display and Keyboard Functions............................................................................. 14

3.2 View.........................................................................................................................16

3.3 Edit........................................................................................................................... 16

3.4 Configure Display .................................................................................................... 16

4.0 CONFIGURATION................................................................................................... 18

4.1 General ................................................................................................................... 18

4.2 Memory.................................................................................................................... 18

4.3 Start-up.................................................................................................................... 18

4.4 Set Function............................................................................................................. 18

4.5 Alarm 1 and 2 .......................................................................................................... 22

4.6 Interval Timer........................................................................................................... 23

4.7 Temperature Configuration ...................................................................................... 24

4.8 Current Output......................................................................................................... 24

4.9 Defaults.................................................................................................................... 25

4.10 Input Filter................................................................................................................26

4.11 Alarm Setpoint......................................................................................................... 26

4.12 Output Scale Expansion.......................................................................................... 27

4.13 Simulate Current Output ......................................................................................... 28

4.14 pH Correction........................................................................................................... 29

5.0 START UP AND CALIBRATION.............................................................................. 30

5.1 General.................................................................................................................... 30

5.2 Start-up.................................................................................................................... 30

5.3 Calibration................................................................................................................ 30

6.0 KEYBOARD SECURITY.......................................................................................... 34

7.0 THEORY OF OPERATION...................................................................................... 35

8.0 DIAGNOSTICS AND TROUBLESHOOTING .......................................................... 36

8.1 Diagnostics .............................................................................................................. 36

8.2 Troubleshooting ....................................................................................................... 36

8.3 CPU and Power Board Replacement ...................................................................... 39

8.4 Maintenance ............................................................................................................ 39

9.0 RETURN OF MATERIALS....................................................................................... 42

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LIST OF FIGURES

Figure No. Title Page

2-1 Panel Mounting Cutout Information......................................................................... 5

2-2 Panel Mounting Tab Installation .............................................................................. 6

2-3 Wall Mounting Junction Box Assembly.................................................................... 6

2-4 Wall Mounting Junction Box Wiring Diagram........................................................... 7

2-5 Pipe Mounting Installation........................................................................................ 8

2-6 Wall Mount Enclosure (option -20)........................................................................... 9

2-7 Electrical Wiring....................................................................................................... 10

2-8 Wiring Sensor with Standard Cable to 1054B CL Analyzer..................................... 12

2-9 Wiring Sensor with Optimum EMI/RFI Cable to 1054B CL Analyzer....................... 12

2-10 Wiring Sensor Model 389-01-10-54 to Model 1054B CL Analyzer.......................... 13

2-11 Wiring Sensor Model 396P-01-10-54 to Model 1054B CL Analyzer........................ 13

2-12 Wiring Sensor Model 399-07 or 399-08 to Model 1054B CL Analyzer.................... 13

3-1 Front Panel .............................................................................................................. 14

3-2 Key Labels............................................................................................................... 16

3-3 Accessing Editing Function...................................................................................... 16

3-4 Accessing Configuration Menus.............................................................................. 16

4-1 Set Function Menu................................................................................................... 20

4-2 Alarm 1 and Alarm 2 Set Up.................................................................................... 22

4-3 Timer Diagram for One Cycle .................................................................................. 23

4-4 Interval Timer Setup................................................................................................. 23

4-5 Temperature Configuration Setup............................................................................ 24

4-6 Current Output Setup............................................................................................... 24

4-7 Default Setup........................................................................................................... 25

4-8 Alarm Setpoint ......................................................................................................... 26

4-9 Output Scale Expansion.......................................................................................... 27

4-10 Simulate Output Current .......................................................................................... 28

8-1 Three-wire 100 ohm Platinum RTD.......................................................................... 37

8-2 Temperature Simulation into 1054B CL Analyzer.................................................... 37

8-3 Electronic Bench Check Setup................................................................................ 38

LIST OF TABLES

Table No. Title Page

1-1 Replacement Parts .................................................................................................. 3

1-2 Accessories.............................................................................................................. 3

3-1 Description of Keys and Functions.......................................................................... 15

3-2 Information Mnemonics............................................................................................ 16

4-1 Configuration Worksheet.......................................................................................... 19

4-2 Set Mode Function Mnemonics ............................................................................... 21

4-3 Relay States............................................................................................................. 25

8-1 Fault Message Codes.............................................................................................. 36

8-2 RTD Resistance Values........................................................................................... 37

8-3 Troubleshooting Guide............................................................................................. 40

MODEL 1054B CL TABLE OF CONTENTS

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Model 1054B CL SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

1.1 FEATURES AND APPLICATIONS

The Model 1054B Microprocessor Analyzers with the appropriate sensor are designed to continuously measure and control pH, ORP, conductivity, percent concentration, ratio, resistivity, dissolved oxygen, free residual chlorine, or dissolved ozone in industrial and municipal processes.

The Model 1054B Analyzer is housed in a NEMA 4X (IP65) weatherproof, corrosion-resistant, flame retardant enclosure suitable for panel, pipe, or wall mounting. All functions are accessed through the front panel membrane keypad which features tactile feedback. Settings may be protected against accidental or unauthorized changes by a user selectable security code. Measurement data may be read at any time on either an LED or LCD display. The display shows the concentration of free residual chlorine, the pH (optional), temperature, alarm status, and hold and fault conditions.

The 1054B transmits isolated current outputs for chlorine and pH that are continuously expandable over the measurement range. Current outputs can be configured for either direct or reverse action and can be displayed in milliamps or percent of full scale. Output dampening of 0-255 seconds is user selectable. The output and relay settings for hold and fault mode operation are also user selectable. The hold output function allows the user to manually control the process while the sensor is offline for maintenance. Continuous self diagnostics alert the operator to faults caused by analyzer electronics, RTD failure, and open wiring.

Two alarm relays are standard, and the relays can be programmed for high or low activation. For Model 1054B CL Analyzers equipped with dual output (chlorine and pH), either alarm can monitor either output. Alarm 2 can be programmed as a fault alarm. Both alarms feature independent setpoints, adjustable deadband or hysteresis, and time delay action. A dedicated relay with programmable timer function is also provided.

1.1 Features and Applications

1.2 Physical Specifications - General

1.3 Analyzer Specifications @ 25°C

1.4 Recommended Sensors

1.5 Ordering Information

The Model 1054B CL Analyzer is intended for use with a membrane covered amperometric sensor.* Because the permeability of the membrane is a function of temperature, a correction is necessary when the sensor is used at a temperature different from the one at which it was calibrated. The analyzer automatically applies the temperature correction factor. The temperature of the process is measured by an RTD in the sensor and is displayed in either °C or °F.

An aqueous solution of free chlorine is a mixture of hypochlorous acid and hypochlorite ion. The relative amount of each species depends on temperature and pH. Generally, increasing the pH and temperature reduces the amount of hypochlorous acid in the mixture. Because the response of the sensor to hypochlorous acid is greater than its response to hypochlorite, accurate determination of chlorine requires knowledge of the pH and temperature of the sample. If the pH is relatively constant, a fixed pH correction factor can be entered into the analyzer software. If the pH is greater than 7 and fluctuates by more than 0.1 unit, continuous measurement of pH and automatic pH correction is necessary. For analyzers having automatic pH correction, two-point buffer calibration is standard.

An input filter allows the user to configure the analyzer for rapid response or low noise.

The 1054B CL Analyzer is intended for use in applications where species that react with free chlorine, such as ammonia, certain organic amines, and bromide are absent.

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Model 1054B CL SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

1.3 ANALYZER SPECIFICATIONS @ 25°C. Measurement Range: 0-20 ppm (mg/L) chlorine,

0-14 pH

Resolution: 0.001 ppm free residual chlorine (as CI2)

and 0.01 pH units (3-1/2 digit display)

Automatic pH Correction: 5.0 to 9.5 pH Output Stability: ± 0.25% of span over 30 days,

non-cumulative

Temperature Compensation: Automatic or manual

0-50°C. Can be disabled if desired.

Input Filter: 1-255 samples Alarms: Dual, field selectable High/Low, High/High,

or Low/Low Alarm 2 configurable as a fault alarm Time delay: 0 to 254 seconds Dual setpoints, continuously adjustable Hysteresis is adjustable up to 25% of setpoint for low side/high alarm and high side/low alarm

Interval Timer: Controls dedicated relay

Interval: 10 min. to 2999 days On Counts: 1 to 60 On Duration: 1 to 299.9 seconds Off Duration: 1 to 299.9 seconds Wait Duration: 1 to 299.9 seconds

Relay Contacts: Epoxy Sealed Form A contacts,

SPST, Normally Open.

Resistive

Inductive

28 VDC 5.0 Amps 3.0 Amps 115 VAC 5.0 Amps 3.0 Amps 230 VAC 5.0 Amps 1.5 Amps

1.4 RECOMMENDED SENSORS Chlorine: Model 499A CL Free Residual Chlorine

pH: Model 389-01-10-54

Model 396P-01-10-54 Model 399-07 or 399-08

1.2 PHYSICAL SPECIFICATIONS - GENERAL Panel Mount Enclosure: Black, ABS, NEMA 4X, IP65,

CSA Enclosure 4 144 X 144 X 192 mm (5.7 X 5.7 X 7.6 in.)

Wall Mount Enclosure: NEMA 4X, Heavy duty

fiberglass, reinforced thermoplastic.

356.4 X 450.1 X 180.2 mm* (14 X 17.7 X 7.1 in.*)

Front Panel: Membrane keypad with tactile feed-

back and user selectable security code

Digital Display: LCD, black on grey

Optional red LED Character height: 18 mm (0.7 in.)

Electrical Classification:

FM Class I, Div. 2, Group A thru D

28 Vdc relays - 5.0 amps resistive only 150 mA - Groups A & B; 400 mA - Group C; 540 mA - Group D; Ci = 0; Li = 0

CSA Class I, Div. 2, Group A thru D

28 Vdc, 110 Vac & 230 Vac relays

5.0 Amps resistive only

Wall Mount Enclosure: General Purpose

Power: 100 - 127 VAC, 50/60 Hz ±6%, 4.0 W

200 - 253 VAC, 50/60 Hz ±6%, 4.0 W

Current Output: Isolated, 0-20 mA or 4-20 mA into

600 ohms maximum load at 115/230 Vac

550 ohms maximum load at 100/200 Vac; direct or reverse acting; dampening: 0-255 seconds Output 1: total free chlorine (ppm) Output 2 (optional): pH

EMI/RFI: EN 61326 LVD: EN 61010-1

Model option -20 Wall Mount Enclosure does not meet CE requirements

Ambient Temperature: -10 to 65°C (14 to 149°F) Ambient Humidity: LED: 0-95% RH

LCD: 0-85% RH

Weight/Shipping Weight: 1.0 kg/1.5 kg (3.0 lb/4.0 lb)

*Includes latches and mounting feet

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Model 1054B CL SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

Model 1054B Free Residual Chlorine Microprocessor Analyzer: Housed in a NEMA 4X corrosion resistant,

weatherproof housing suitable for panel, pipe, or wall mounting. Standard features include digital display, isolated current outputs, dual programmable alarms, programmable timer with independent relays, and manual or automatic temperature correction for membrane permeability. Optional pH correction is available for processes in which the pH exceeds 7 and varies by more than ±0.1.

MODEL

1054B MICROPROCESSOR ANALYZER (3.5 lb./1.5 kg)

1.5 ORDERING INFORMATION

PN DESCRIPTION

33469-00 Enclosure Body 33470-00 Enclosure, Rear Cover 32938-00 Gasket, Front Cover 32937-00 Gasket, Rear Cover 22966-00 PCB, LCD Digital Display 23245-01 PCB, LED Digital Display 23695-22 Keyboard Overlay, LCD Version, CL 23695-23 Keyboard Overlay, LED Version, CL 23666-03 PCB, CPU, Free Residual Chlorine 23332-00 PCB, CPU, pH 23739-00 PCB, Power Supply 23740-02 PCB, Motherboard

9100157 Fuse, 0.1A, 250V, 3AB, Slo Blo 9100160 Fuse, 0.25A, 125V Axial Lead PICO II 9100189 Fuse, 0.75A, 125V Axial Lead PICO II

TABLE 1-1. Replacement Parts TABLE 1-2. Accessories

CODE Measurement

CL Free Residual Chlorine

CODE Display (Required Selection)

01 LCD Display 02 LED Display

CODE pH Correction

10 Automatic pH Correction with 2nd Output (Requires pH Sensor with preamplifier)

CODE Options

20 Wall Mount Enclosure (not CE approved)

PN DESCRIPTION

2001492 Tag, Stainless Steel, Specify Marking

23025-01 Panel Mounting Kit 23053-00 Pipe Mounting Kit for 2-inch pipe,

complete; includes mounting bracket,

U-bolts, and all necessary fasteners

23054-01 Wall Mounting Kit, complete; includes wall

mounting bracket, junction box, conduit nipples to connect analyzer to junction box, and all necessary seals and fasteners

23268-01 Heater, 115 VAC, 50/60 Hz, 1054B

(Code 20 only)

23268-02 Heater, 230 VAC, 50/60 Hz, 1054B

(Code 20 only)

1054B CL 01 10 EXAMPLE

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MODEL 1054B CL SECTION 2.0

INSTALLATION

SECTION 2.0

INSTALLATION AND WIRING

2.1 GENERAL. The analyzer is suitable for outdoor

use. However, the analyzer should be located in an area where temperature extremes and vibrations are minimized or absent. Installation must be performed by a trained technician.

2.2 UNPACKING AND INSPECTION. Inspect the analyzer for shipping damage. If damage is found, notify the carrier immediately. Confirm that all items shown on the packing list are present. Notify Rosemount Analytical if items are missing.

2.3 INSTALLATION. Select a location at least one foot from any high voltage conduit, with easy access for operating personnel, and not in direct sunlight. Prepare the analyzer for installation by following the procedure for the appropriate mounting configuration:

2.3.1 Panel Mounting (Standard). The Model 1054B fits into a DIN standard 137.9 mm X 137.9 mm (5.43 in. X 5.43 in.) panel cutout. Refer to Figures 2-1 and 2-2.

1. Remove the four screws holding the front panel assembly of the enclosure and carefully pull the front panel and connected printed circuit boards straight out.

2. Align the latches as shown in Figure 2-2 and insert the analyzer enclosure through the front of the panel cutout. Tighten the screws for a firm fit. Do not overtighten.

3. Replace the front panel assembly. The circuit boards must align with the slots on the inside of the enclosure. Tighten the four front panel screws.

2.3.2 Wall Mounting Plate with Junction Box (PN 23054-01). Refer to Figures 2-3 and 2-4.

1. Remove the four screws holding the front panel assembly of the enclosure and carefully pull the front panel and connected printed circuit boards straight out.

2. Attach the mounting bracket to the junction box with the hardware provided. See Figure 2-3. Wiring can be brought to the terminal strip prior to mounting the analyzer to the junction box.

3. Place the metal stiffener on the inside of the analyzer and install the two 1/2 in. conduit fittings using two weather seals. Place the NEMA 4X conduit plug in the center hole.

4. Attach the analyzer to the junction box using the 1/2 in. conduit fittings.

5. Complete the wiring connections between the analyzer and the junction box. Refer to Figure 2-4.

Panel Mounting Section 2.3.1 Wall Mounting Section 2.3.2 Pipe Mounting Section 2.3.3 Wall Mount Enclosure Section 2.3.4

2.1 General

2.2 Unpacking and Inspection

2.3 Installation

2.4 Electrical Connections - General

2.5 Sensor Wiring

Page 11

MODEL 1054B CL SECTION 2.0

INSTALLATION

DWG. NO. REV.

41054B01 A

FIGURE 2-1. Panel Mounting Cutout Information

MILLIMETER

INCH

Page 12

Model 1054B CL SECTION 2.0

INSTALLATION

FIGURE 2-3. Wall Mounting Junction Box

Assembly

DWG. NO. REV.

41054A27 A

FIGURE 2-2. Panel Mounting Tab Installation

DWG. NO. REV.

41054A26 A

Install the mounting latches as shown (latches are shown oversize for clarity). If the latches are not installed exactly as shown, they will not work correctly. The screws provided are self-tapping. Tap the screw the full depth of the mounting latch (refer to side view) leaving a gap greater than the thickness of the cutout panel.

Page 13

Model 1054B CL SECTION 2.0

INSTALLATION

FIGURE 2-4. Wall Mounting Junction Box Wiring Diagram

Run the sensor wiring into the left hand opening (from front view) of the junction box. Run all other wiring out of the right hand opening. The wiring diagram is for the most common sensors. See Figures 2-8 through 2-12 for complete wiring information.

DWG. NO. REV.

41054B39 A

WHEN INCH AND METRIC DIMS

ARE GIVEN

MILLIMETER

INCH

Page 14

2.3.3 Pipe Mounting (PN 23053-00). The 2 in. pipe mounting kit includes a metal plate with a cutout for the analyz-

er. Refer to Section 2.3.1 for mounting the analyzer into the plate. Mounting details are shown in Figure 2-5 (below).

MODEL 1054B CL SECTION 2.0

INSTALLATION

FIGURE 2-5. Pipe Mounting Installation

DWG. NO. REV.

41054B02 C

WHEN INCH AND METRIC DIMS

ARE GIVEN

MILLIMETER

INCH

Page 15

2.3.4 Wall Mount Enclosure (option -20). See Figure 2-6 (below) for installation details.

MODEL 1054B CL SECTION 2.0

INSTALLATION

FIGURE 2-6. Wall Mount Enclosure (Option -20)

DWG. NO. REV.

41054B43 A

WHEN INCH AND METRIC DIMS

ARE GIVEN

MILLIMETER

INCH

Page 16

Model 1054B CL SECTION 2.0

INSTALLATION

2.4 ELECTRICAL CONNECTIONS-GENERAL

All electrical connections are made to terminal blocks on the rear panel (interface board) of the analyzer. To reach the rear panel, remove the four screws securing the back cover of the enclosure. Gently pull away the cover, which is connected to the rear panel by a continuity wire. If the wire is disconnected for any reason, reconnect it to the nearest mounting screw before replacing the cover.

Figure 2-7 (below) shows the interface panel and wiring connections.

FIGURE 2-7. Electrical Wiring

Wire the pH sensor to terminal block TB3 (see Figures 2-10, 2-11, and 2-12).

Wire the chlorine sensor to TB2 (see Figures 2-8 and 2-9).

DWG. NO. REV.

41054B38 A

Page 17

Model 1054B CL SECTION 2.0

INSTALLATION

The three openings in the bottom rear of the analyzer housing accommodate 1/2 in. conduit fittings. Looking at the analyzer from the rear, the right opening is for sensor wiring, the center opening is for signal output, and the left opening is for power, timer, and alarm wiring. Always run sensor wiring in a separate conduit from power wiring.

2.4.1 Power Connections. The model 1054BCL analyzer uses either 115 Vac or 230 Vac power. See Figure 2-7 for connections. AC power wiring should be 14 gauge or greater.

2.4.2 Output Signal Wiring. Terminals 1 and 2 on TB3 are for the chlorine output signal and terminals 3 and 4 are for the pH signal. Maximum output load is 600 ohms. For best EMI/RFI protection shield the output cable and enclose it in an earth grounded metal conduit. If the output wiring is connected directly to the analyzer, connect the cable shield to terminal 8 on TB3. If the output wiring runs through a junction box, connect the cable shield to earth ground on terminal board TBA.

2.4.3 Alarm Wiring. Connect the alarm and timer circuits to terminals 1 through 6 on TB1. See Figure 2-7 for details.

CAUTION

The sensitivity and stability of the analyzer will be impaired if the input wiring is not grounded. DO NOT apply power to the analyzer until all electrical connections are verified and secure. The following precautions are a guide using UL 508 as a safeguard for personnel and property.

NOTE

The user must provide a means to disconnect the main power supply in the form of circuit breaker or switch. The circuit breaker or the switch must be located in close proximity to the instrument and identified as the disconnecting device for the instrument.

1. AC connections and grounding must be in compliance with UL 508 and/or local electrical codes.

2. The metal stiffener is required to provide support and proper electrical continuity between conduit fittings.

3. This type 4/4X enclosure requires a conduit hub or equivalent that provides watertight connect, REF UL 508-26.10.

4. Watertight fittings/hubs that comply with the requirements of UL 514B must be used.

5. Conduit hubs must be connected to the conduit before the hub is connected to the enclosure, REF UL 508-26.10.

6. If the metal support plate is not used, plastic fittings must be used to prevent structural damage to the enclosure. Also, appropriate grounding lug and AWG conductor must be used with the plastic fittings.

Page 18

Model 1054B CL SECTION 2.0

INSTALLATION

2.5 SENSOR WIRING

2.5.1 Chlorine Sensor.The analyzer is recommended for use with only the 499ACL chlorine sensor. Wire the sen-

sor to terminal block TB2. See Figure 2-8 for sensors having standard cable. See Figure 2-9 for sensors having optimum EMI/RFI cable.

Sensor cable should also be shielded. If the sensor is wired directly to the analyzer, connect the outer shield of the sensor cable to earth ground using terminal 8 on TB2. If the sensor is wired through a wall mounting junction box, connect the outer shield to the earth ground terminal of TBA. If the outer shield of the cable is metal braid, use a metal cable gland fitting to connect the braid to earth ground by way of the instrument case.

FIGURE 2-8. Wiring Sensor with Standard Cable to 1054B CL Analyzer

FIGURE 2-9. Wiring Sensor with Optimum EMI/RFI Cable to 1054B CL Analyzer

Page 19

Model 1054B CL SECTION 2.0

INSTALLATION

2.5.2 pH Sensor. Wire the pH sensor to terminal block

TB3. The table lists recommended pH sensors and the figure number of the wiring diagram. The pH sensor must have a preamplifier compatible with the Model 1054B.

Insulate unused leads and connect them to the cable to prevent shorted connections.

pH Sensor Wiring Diagram

389-01-10-54 Figure 2-10 396P-01-10-54 Figure 2-11 399-07 or 399-08 Figure 2-12

FIGURE 2-10. Wiring Sensor Model 389-01-10-54 to Model 1054B CL Analyzer

FIGURE 2-11. Wiring Sensor Model 396P-01-10-54 to Model 1054B CL Analyzer

FIGURE 2-12. Wiring Sensor Model 399-07 or 399-08 to Model 1054B CL Analyzer

Page 20

2. Set alarm points, generate specific output currents for testing, set zero and full-scale outputs, and calibrate concentration, pH and temperature.

3. Select temperature in °C or °F, configure alarms (setting an alarm and configuring an alarm are different operations [see Section 4.0]), set timer functions, establish a password, and set the current output range.

Each key in the top row of the keypad has dual functions. Pressing the key once displays the value identified by the lower (white on blue) label. Pressing the key twice in rapid succession displays the value or activates the function identified by the upper (blue on white) label. Two keys in the bottom row also have dual functions. The use of these keys is explained in later sections. Table 3-1 summarizes the values and functions associated with each key.

MODEL 1054B CL SECTION 3.0

DESCRIPTION OF CONTROLS

SECTION 3.0

DESCRIPTION OF CONTROLS

3.1 DISPLAY AND KEYBOARD FUNCTIONS. Figure 3-1

shows the front panel of the 1054B CL Microprocessor Analyzer. The front panel consists of a single line display with information flags and an eight key membrane keypad. Readings and instrument settings and the mnemonics that guide the user through configuring the instrument appear in the main display. The flags at the sides of the display show whether an alarm relay is activated or deactivated, indicate hold and fault conditions, and show the units of the value being displayed. As explained in Figure 3-1 a steady flag and a flashing flag have different meanings.

The operations of the 1054B Microprocessor Analyzer are controlled by the eight keys shown in Figure 3-1. The keys are used to:

1. Display values other than the primary value (PV). Free residual chlorine concentration is the primary value.

FIGURE 3-1. Front Panel

DWG. NO. REV.

41054B37 A

3.1 Display and Keyboard Functions

3.2 View

3.3 Edit

3.4 Configure Display

Page 21

Model 1054B CL SECTION 2.0

INSTALLATION

Displays the present output in mA or percent of full scale.

Pressing SELECT with the output showing causes the analyzer to simulate an output current

Displays the value corresponding to the low current (4 or 0 mA) output.

Pressing SELECT with the value showing allows the value to be changed.

Displays the value corresponding to the full scale (20 mA) output .

Pressing SELECT with the value showing allows the value to be changed.

1. Selects a sub-menu when a mnemonic is displayed.

2. Shifts to next digit when a number is displayed.

1. Moves to the next item in the menu when a mnemonic is displayed.

2. Pressing once increases the flashing digit by one.

3. Holding the key down autoscrolls the display.

1. Pressing key twice in rapid succession allows access to the set function menu.

2. Enters displayed value into memory.

3. Enters displayed mnemonic into memory.

Displays Alarm 1 setpoint. Pressing SELECT with the setpoint

showing allows the setpoint to be changed.

Displays the concentration of free residual chlorine.

Pressing SELECT with the concentration showing allows one point standardization of the analyzer.

Places the analyzer in hold or removes the analyzer from hold. When the analyzer is in hold, the display shows the present chlorine concentration, but the output remains at the value it was when hold was initiated.

Displays the process temperature (°C or °F). Pressing SELECT with temperature

showing allows the temperature to be scalibrated.

Displays Alarm 2 setpoint. Pressing SELECT with the setpoint

showing allows the setpoint to be changed.

Display pH. Pressing SELECT with pH showing allows the pH reading to be changed. Pressing SCROLL (éé) with pH showing allows the automatic pH correction feature to be set and permits the pH sensor to be calibrated.

HOLD

TEMP

OUTPUT

ZERO

ALARM 1

F.S.

ALARM 2

CAL

SELECT

ACCESS

ENTER

SECOND FUNCTION (PRESS TWICE QUICKLY)MAIN FUNCTION (PRESS ONCE)

TABLE 3-1. Description of Keys and Functions.

Page 22

MODEL 1054B CL SECTION 3.0

DESCRIPTION OF CONTROLS

3.2 VIEW. To view a measurement or a setting without

changing its value, press the appropriate key in the top row. Press once to display the value of the lower label. Press twice in rapid succession to display the value of the upper label (see Figure 3-2).

In some cases, an information mnemonic appears momentarily before the value is displayed. Table 3-2 explains the meaning of the information mnemonics.

TABLE 3-2. Information Mnemonics

Mnemonic Description Mnemonic Description

AdJ Adjust value LOC Access locked – enter security code bAd Incorrect entry Pc1 Displays FRC output in percent bF1 Buffer 1 Pc2 Displays pH output in percent bF2 Buffer 2 PH pH display (measured process pH) dc1 Displays FRC output value in mA FrC Free residual chlorine display dc2 Displays pH output value in mA SEt Set mode do1 Display output (FRC) Si1 Simulates FRC output (mA) do2 Display output (pH) Si2 Simulates pH output (mA) FPH Fixed pH display (manual pH input) SP1 Simulates FRC output (%) HLd Analyzer in hold mode SP2 Simulates pH output (%) HI1 Displays 20 mA setpoint (FRC) SLP Displays pH electrode slope HI2 Displays 20 mA setpoint (pH) SP1 Displays Alarm 1 setpoint itr Interval timer activated SP2 Displays Alarm 2 setpoint LO1 Displays 0 or 4 mA setpoint (FRC) Std Standardize LO2 Displays 0 or 4 mA setpoint (pH)

3.3 EDIT. If desired, the values accessed by the keys in the upper row of the keypad can be edited. Use the SELECT, SCROLL (é), SHIFT (ç), and ENTER keys to change a displayed value. With the value to be changed showing in the display, press SELECT. An information mnemonic appears momentarily, then the number reappears with the right hand digit flashing to indicate that the number can be changed (see Figure 3-

3). Pressing the é key increases the value of the blinking digit by one unit. To move to the next digit, use the ç key. To place the new value in memory, press ENTER. Refer to Table 3-2 for an explanation of the information mnemonics.

Table 3-1 summarizes the functions of the edit keys.

1. Press key.

2. AdJ shows briefly.

3. Numbers show with digit flashing.

1. Press key twice.

2. Lo shows briefly.

3. Zero point is displayed.

SELECT

ZERO

ALARM

FIGURE 3-3. Accessing Editing Function.

FIGURE 3-2. Key Labels.

Single press of the key displays the present free residual chlorine reading. Read only.

OUTPUT

Quick double press of the key displays the present output in mA or percent of full scale. Read only.

Page 23

3.4 CONFIGURE DISPLAY. The display and analyzer

functions are configured using the set function program. To enter the program, quickly double press the ACCESS/ENTER key (see Figure 3-4).

Figure 4-1 on page 20 shows the main menu, the submenus, and the shorthand labels or mnemonics assigned to each item in the menus. Table 4-2 on page 24 explains the meaning of each mnemonic. The set function is used to configure alarms, set the interval timer, change the units in which temperature is displayed, configure the output signal, tell the analyzer what to do during fault or hold conditions, filter the input signal, and set a security code.

To move through the main menu press and hold the SCROLL (é) key. When the desired item is displayed, release the key. Most items in the main menu have a sub-menu associated with them. To enter a sub-menu, press SELECT and use the SCROLL (é) key to move through the sub-menu. To choose an item in a submenu, press SELECT. If the item selected can be edited, the screen will change to a flashing display. If digits are showing, use the SCROLL (é) key to change number and the SHIFT (ç) key to move to the next digit. Press ENTER to place the value in memory. If a word or a mnemonic is flashing, indicating it can be changed to a different mnemonic, use the SCROLL (é) key to display the desired setting and press ENTER to place the selection in memory.

To leave a menu or sub-menu without entering the edited value, press PV. The display will change to the concentration of free residual chlorine in the sample.

MODEL 1054B CL SECTION 3.0

DESCRIPTION OF CONTROLS

1. Press twice in rapid succession.

2. SEt appears momentarily to confirm entry into set function menu.

3.First menu item is displayed. Analyzer now ready to configure.

4. Use the SCROLL key to move through the menus.

ACCESS

ENTER

SEt

FIGURE 3-4. Accessing Configuration Menus

Page 24

4.1 GENERAL. This section explains how to configure

the Model 1054 B CL Analyzer to a specific application.

NOTE

The analyzer is configured at the factory for the best general use. Table 4-1 lists the factory settings. Use the worksheet (Table 4-1) to record your configuration. The configuration can be done in any order. However, to reduce the chance of accidentally omitting important settings, it is best to configure the analyzer in the order presented in the manual and on the worksheet.

4.2 MEMORY. The Model 1054B CL Analyzer can be configured before or after installation. Configuration settings are written into non-volatile memory and remain in memory when power is removed.

4.3 ST ART-UP. If the sensor is not connected, the analyzer may start up flashing a fault mnemonic. The mnemonic will be suppressed when the analyzer is in the set function mode; however, the fault flag will continue to flash.

NOTE

To shorten sensor warmup time, wire the sensor to the analyzer as soon as possible.

4.4 SET FUNCTION. Enter the set function by pressing the ACCESS/ENTER key twice in rapid succession. The mnemonic SEt appears momentarily, confirming that the analyzer is in the set mode. The display then changes to the first item in the main menu, in.

NOTE

If LOC is displayed instead of SEt, the keypad is locked, and the security code must be keyed in to gain access to the set function menus. Refer to Section 6.0.

The first three items in the menu, in, SEn, and

-O- are not used for configuring the analyzer. Instead, selecting in displays the current being generated in the sensor, selecting SEn allows the approximate sensitivity (current per ppm) of the sensor to be entered, and selecting -O- sets the present current equal to zero concentration.

Figure 4-1 is a map of the set function program. The program contains a main menu, shown on the left hand side of the figure, and several sub-menus connected to items in the main menu. The menu items are identified by mnemonics. Refer to Table 4-2 for an explanation of each mnemonic. Selecting an item in the main menu gives access to the associated sub-menu. For example, choosing AL1 in the main menu moves the user into a sub-menu containing FrC, PH, and OFF. Selecting FrC or PH in this sub-menu gives access to a deeper sub-menu containing H-L, HYS, don, and doF. Selecting H-L from this menu gives a mnemonic display that can be edited (HI or LO). Selecting any other item gives a numeric display for editing.

Model 1054B CL SECTION 4.0

CONFIGURATION

SECTION 4.0

CONFIGURATION

4.1 General

4.2 Memory

4.3 Start-Up

4.4 Set Function

4.5 Alarm 1 and 2

4.6 Interval Timer

4.7 Temperature Configuration

4.8 Current Output

4.9 Defaults

4.10 Input Filter

4.11 Alarm Setpoint

4.12 Output Scale Expansion

4.13 Simulate Current Output

4.14 pH Correction

Page 25

Model 1054B CL SECTION 4.0

CONFIGURATION

FACTORY SET USER SET

A. Alarm 1 Setup (

AALL11

)

1. Alarm Configuration (FrC/PH/OFF) FrC _________

2. High or Low (H-L) (Hi/Lo) Lo _________

3. Hysteresis (HYS) 0-25% 0.00 _________

4. Delay Time On (don) 0-255 sec 000 sec _________

5. Delay Time Off (doF) 0-255 sec 000 sec _________

B. Alarm 2 Setup (

AALL22

)

1. Alarm Configuration (FrC/PH/OFF/FLt) FrC _________

2. High or Low (H-L) (H

/Lo) Hi _________

3. Hysteresis (HYS) 0-25% 0.00% _________

4. Delay Time On (don) 0-255 sec 000 sec _________

5. Delay Time Off (doF) 0-255 sec 000 sec _________

C. Interval Timer (

iinn

1. Active Status (tOn) (OFF/on) OFF _________

2. Interval Time (

nt) minimum 10 minutes 1 Day _________

3. Count (cnt) 1 to 60 5 _________

4. On Time (ont) 0 to 299 sec 1 sec _________

5. Off Time (OFt) 0 to 299 sec 1 sec _________

6. Duration (dur) 0 to 299 sec 2 sec _________

D. Temperature Setup (t-CC)

1. Display Temperature (d-t) (

oC/o

C _________

2. Automatic TC (Atc) (on/oFF) on _________ Manual Temp. Value 0°C to 50°C _________

E. Current Output Setup (

OOt11//OOt22

)

1. mA Output (CUr) (020/420) 42O _________

2. Display Current Output (d-O) (Pct/doc) doc _________

3. Dampen Current Output (dPn) 0 to 255 sec 000 sec _________

F. Default Setup (

ddFF

1. Relay 1 Default (rL1) (non/oFF/on) non _________

2. Relay 2 Default (rL2) (non/oFF/on) non _________

3. FrC Output Default (Cu1) (non/cur) non _________

4. PH Output Default (Cu2) (non/cur) non _________

G. Keyboard Security Setup (

CCOOdd

)

1. Keyboard Security Required 001-999 – _________

2. Keyboard Security Not Required 000 000 _________

H. Alarm Setpoints

1. Alarm 1 (SP1) 0-20 ppm or 0-14 pH 0 ppm _________

2. Alarm 2 (SP2) 0-20 ppm or 0-14 pH 20 ppm _________

I. Current Outputs

1. Zero (0 or 4 mA) (LO1/LO2) 0-20 ppm or 0-14 pH 0 ppm or 0 pH _________

2. F.S. (Full Scale) (20 mA) (HI1/ HI2) 0-20 ppm or 0-14 pH 20 ppm or 14 pH _________

TABLE 4-1. Configuration Worksheet

To move around in the main menu or in a sub-menu, press the SCROLL (é) key. To choose an item in the menu, press the SELECT key. If pressing SELECT produces a flashing display, the mnemonic or number shown can be changed. Press the SCROLL (é) and SHIFT (ç) keys to change a number; press the SCROLL (é) key to change a mnemonic. To place

the value in memory, press ENTER. After an edited value has been stored, the display returns to the item in the sub-menu that allowed access to the value. For example, selecting HYS from the sub-menu attached to AL1, allows access to a number whose value can be changed. After the number has been edited and stored in memory, the display returns to HYS.

Page 26

Model 1054B CL SECTION 4.0

CONFIGURATION

FIGURE 4-1. Set Function Menu

FrC

OFF

SEt

rL1

rL2

Cu1

Cu2*

SHO

FrC

FLt

OFF

d-t

Atc

SEn

-0-

AL1

AL2

Int

t-C

Ftr

Ot1

Ot2

dFt

UEr

dtS

COd

dPn

CUr

d-O

oFF

doc

Pct

oFF

non

cur

oFF

420

020

tOn

int

cnt

ont

OFt

dur

tiL

SEC

uin

dAY

* Not available unless the optional

pH board has been installed

H-L

HYS

don

doF

Page 27

Model 1054B CL SECTION 4.0

CONFIGURATION

AL1 Alarm 1 setup AL2 Alarm 2 setup APH Automatic pH adjustment Atc Automatic temperature compensation

C Temperature °C

COd Security code cnt Timer count CUr Configure current output Cu1 Configure fault output 1 (FRC) Cu2 Configure fault output 2 (pH) cur Default current setpoint dAY Days dFt Fault configuration d-O Display output d-t Display temperature doc Display output in mA doF Relay delay off time don Relay delay on time dPn Dampen outputs dtS LCD/LED display test dur Timer duration

°o

F Temperature °F FLt Use alarm as fault alarm Hi Relay action – high H-L Alarm logic hr Hours HYS Hysteresis

in Sensor input current int Interval period Int Timer setup Lo Relay action – low non No action on fault not pH CPU PCB not installed OFF Alarm not used oFF Function off ont Timer on time On Use alarm as process alarm on Function on OFt Timer off time Ot1 Configure output 1 (FRC) Ot2 Configure output 2 (pH) Pct Display output in percent rL1 Relay 1 fault setup rL2 Relay 2 fault setup SEC Seconds SHO Show fault history t-C Temperature configuration ti L Timer – time remaining tOn Timer status UEr Software version uin Minutes 420 4mA to 20mA output 020 0mA to 20mA output

-0- Zero sensor

TABLE 4-2.

Set Function Mnemonics

Page 28

4.5 ALARM 1 AND 2. The alarms can be configured to

perform on - off process control. Selecting AL1 or AL2 allows alarm 1 or alarm 2, respectively, to be configured.

A. Alarm for Free Residual Chlorine. Select FrC if the alarm is to monitor the concentration of free residual chlorine. See steps E through H for further alarm configuration.

B. Alarm for pH. Select PH if the alarm is to monitor pH. See steps E through H for further alarm configuration.

C. Fault (Alarm 2 Only). Selecting FLt makes Alarm 2 a fault alarm. Relay 2 energizes when the analyzer senses a fault condition.

D. Off. Select OFF if the alarm is not to be used or to temporarily disable the alarm. Alarm setpoints will display oFF if this item is selected.

E. Alarm Logic. Select H-L to set high or low alarm logic. Hi activates the alarm when the reading is greater than the setpoint value. Lo activates the alarm when the reading is less than the setpoint value.

F. Relay Hysteresis. Select HYS to set the hysteresis or dead band. Hysteresis is the difference between the alarm setpoint and the reading past the setpoint at which the relay deactivates. Hysteresis may be set between 0 and 25% of the setpoint. Use hysteresis when a specific chlorine concentration should be reached before the alarm deactivates.

Model 1054B CL SECTION 4.0

CONFIGURATION

G. Delay On Time. Select don to set the delay on time.

Delay on time is the time between an alarm setpoint being reached and the relay activating. The delay may be set between 0 and 255 seconds. An alarm state restarts the time from zero.

H. Delay Off Time. Select doF to set the delay off time. Delay off time is the time between an alarm setpoint being cleared and a relay deactivating. The delay may be set between 0 and 255 seconds. An alarm state restarts the time from zero.

4.5.1 Alarm Setup (

AALL11/AALL22

). Refer to Figure 4-2.

1. Enter the set function menu by double pressing the ACCESS/ENTER key.

2. SCROLL (é) until AL1 or AL2 appears in the display.

3. Press SELECT to move into the sub-menu. FrC, PH, OFF, or FLt (Alarm 2 only) will be displayed.

4. SCROLL (é) until the desired item appears, then press SELECT.

5. If OFF was selected, the display will show oFf. Press the ENTER key to return to AL1 or AL2 (whichever alarm was being configured). Skip to Step 1 1.

If FrC or PH was selected, the display will show FrC or PH momentarily, then change to H-L. Go to Step 6.

If FLt was selected, the display will show FLt. Press the ENTER key to return to AL2. Go to Step 11.

6. With H-L showing in the display, press SELECT. Hi or Lo will appear as a flashing display.

7. SCROLL (é) to the desired setting and press ENTER to store the setting in memory. The display will return to H-L. To make changes to the relay activation logic, proceed to Step 8, otherwise go to Step 11.

8. SCROLL (é ) to display HYS, don, or doF then SELECT the desired item. A flashing numeric display will appear, indicating that a number is required.

9. Use the SCROLL (é) and SHIFT (ç ) keys to change the display to the desired value.

10. Press ENTER to store the value in memory. The analyzer will acknowledge, and the display will return to the mnemonic that permitted access to the value. Repeat Step 8 if further changes are desired.

11. Repeat Steps 3 through 10 to configure the other alarm.

12. To return to the top menu of the set function menu, press the ACCESS/ENTER key.

FrC

OFF

FrC

FLt

OFF

AL1

AL2

H-L

HYS

don

doF

SEt

Figure 4-2. Alarm 1 and Alarm 2 Setup.

Page 29

4.6 INTERVAL TIMER. Select Int to set the interval

timer relay logic. The timer can be used to activate and control a sensor cleaner. Refer to Figure 4-3 for an explanation of the terms used.

A. Interval Timer Enable/Disable. Select t

to enable the interval cycle (on) or disable the interval cycle (OFF).

B. Interval Period. Select int to set the amount of time between control cycles (see Figure 4-3). int opens a sub-menu that asks for time in SEC for seconds, uin for minutes, hr for hours, and dAY for days. The recommended minimum interval is 10 minutes.

C. Relay Activations Per Cycle. Select cnt to enter the number of times the relay activates per cycle. The range is 1 to 60.

D. Relay Activation Duration. Select ont to enter the amount of time the relay remains on each time it activates. The range is 0.1 to 299.9 seconds.

E. Relay Deactivation Duration. Select OFt to set the amount of time the relay remains deactivated between each on-period during the cycle. Deactivation time is valid only when cnt is 2 or greater. The range is 0.1 to

299.9 seconds. F. Sensor Recovery Time. Select dur to set the

length of time between the end of the last on-period and the end of the control cycle. The recovery time gives the sensor time to restabilize before the analyzer returns to on-line operation. Recovery time may be set between 0 and 299 seconds.

G. Interval Time Remaining. Select tiL to display the time remaining before the next cycle starts. If tiL is selected during the control cycle, display will show --.

NOTE

The Model 1054B CL is placed on HOLD during the control cycle (from first on-period through the sensor recovery time). The analyzer simulates a fault condition and briefly shows itr every eight seconds. The display continues to show the measured value.

Model 1054B CL SECTION 4.0

CONFIGURATION

4.6.1 Interval Timer Set Up (Int). Refer to Figure 4-4.

1. Enter the set function menu by double pressing the ACCESS/ENTER key.

2. SCROLL (é) until Int appears in the display.

3. Press SELECT to move to the next menu level. The display will show tOn. Press the SELECT key again.

4. SCROLL (é ) to display on or OFF and press ENTER to store the desired setting in memory. If the interval timer was selected, go to Step 5, otherwise go to Step 10.

5. Press the SCROLL (é) key once to display int, then press the SELECT key. The display will change to SEC. SCROLL (é) until the desired unit, minutes (uin) hours (hr), or days (dAY) appears in the display. Press SELECT. The display will change to a numeric value with the right hand digit flashing.

6. Use the SCROLL (é) and the SHIFT (ç) keys to change the displayed number to the desired value. ENTER the number into memory.

7. Repeat steps 5 and 6 if needed. For example, if the desired interval is 6.5 hours, enter 30 uin and 6 hr.

8. Press the ENTER key again to return to the main timer menu. SCROLL (é) to the next desired item and press SELECT.

9. Selecting any of the remaining menu items (cnt, ont, OFt, and dur) causes the display to show a numeric value. Use the SCROLL (é) and SHIFT (ç) keys to change the displayed number to the desired value and ENTER the new value into memory. Continue until all the settings have been made.

10. Press the ENTER key to return to the main menu.

RELAY

OFF

TIME

int

ont

OFt

ont

dur

cnt = 2

SEt

OFF

tOn

int

cnt

ont

OFt

dur

tiL

SEC

uin

dAY

Int

Figure 4-3. Timer Diagram for One Cycle

Figure 4-4. Interval Timer Setup

Page 30

4.7 TEMPERATURE CONFIGURATION. Select t-C

for temperature reading and compensation choices. A. Temperature Display. Select d-t to display tem-

perature in °C or °F. B. Automatic Temperature Compensation. Select

Atc to enable or disable automatic temperature compensation. The 1054B CL Analyzer uses a membranecovered amperometric sensor. Because the permeability of the membrane increases about 3%/°C, temperature compensation is critical if the measurement and calibration temperatures are different. When on is selected, the analyzer uses the temperature input from the sensor for temperature compensation. When oFF is selected, the analyzer uses the value entered by the user. Turning off the automatic temperature compensation, i.e., placing the analyzer in manual temperature compensation, is useful only if the temperature sensor is faulty and the calibration and measurement temperatures differ by at most 1 or 2 °C. Selecting oFF disables temperature specific fault messages (refer to Section 8.1).

4.7.1 Temperature Setup (t

--CC

). Refer to Figure 4-5.

1. Enter the set function menu by double pressing the ACCESS/ENTER key .

2. SCROLL (é) until t-C appears in the display.

3. Press SELECT to move to the next menu level. d-t will show the display.

4. SCROLL (é ) to display desired item, then SELECT it.

5. If d-t is selected, the display will flash oC or oF. SCROLL (é) until the desired unit appears in the display. Press ENTER to store the selection into memory . The display will return to d-t.

6. If At c is selected, the display will flash on or oFF. SCROLL (é) and ENTER the desired temperature compensation into memory. Choosing on causes the display to return to At c. Choosing oFF causes a flashing number to be displayed. Use the

SCROLL (é) and SHIFT (ç) keys to change the display to the desired temperature and press ENTER. The display returns to Atc.

7. Press the ENTER key to return to the main menu.

4.8 CURRENT OUTPUT. Select Ot1 to configure the current output for free residual chlorine. Select Ot2 to configure the output for pH. Note that Ot2 is available only if the pH board has been installed. See Figure 4-6.

A. Output Dampening. Select dPn to dampen the analyz- er output. Dampening reduces the apparent noise but increases the response time of the output. The dampening feature averages the signal for a set period of time (between 0 and 255 seconds) and changes the output by an amount equal to 63% of change between the present and previous sampling period.

B. mA Output Range. Select CUr to set the output sig- nal to 0-20 mA (020) or to 4-20 mA (420).

C. Display Output. Select d-O to display the output in mA (doc) or in percent of full scale (Pct).

4.8.1 Output Setup (

OOt11/OOt22

). Refer to Figure 4-6.

Enter the set function menu by double pressing the

ACCESS/

ENTER

key .

2. SCROLL (é) until Ot1 appears in the display.

3. Press SELECT to move to the next menu level. dPn will displayed.

4. SCROLL (é) then SELECT desired item.

If dPn is selected, a numeric display will flash to indicate that a value is required. Use the

SCROLL (é)

and SHIFT (ç) keys to change the display to the desired value. Press ENTER to place the value in memory.

Model 1054B CL SECTION 4.0

CONFIGURATION

t-C

SEt

Ot1

Ot2

SEt

d-t

AtC

oFF

doc

420

020

dPn

CUr

d-O

Figure 4-5. Temperature Configuration Setup

Figure 4-6. Current Output Setup

Page 31

Model 1054B CL SECTION 4.0

CONFIGURATION

SEt

dFt

6. If CUr or d-O is selected, SCROLL (é ) to the desired mnemonic and press ENTER to store it in memory.

7. Press ENTER to return to the main menu and SCROLL (é ) until Ot2 shows in the display. Repeat steps 5 and 6 to configure the pH output. Ot2 is available only if the pH correction board has been installed in the analyzer.

8. Press the ENTER key to return to the main menu.

4.9 DEFAULTS. Select dFt to configure default set-

tings during faults or hold status. See Table 8-1 for a listing of the fault conditions that can be diagnosed by the analyzer.

A. Relay 1 and 2. rL1 is relay 1 and rL2 is relay 2. The relays can be set to activate (on), deactivate (oFF), or hold present status (non). Table 4-3 describes how to configure the relays for various fault or hold conditions. For example, for relay 1 to activate when the analyzer is in hold, both alarm 1 and relay 1 must be on.

B. Current Output. Cu1 sets the value to which the current at output 1 goes and Cu2 sets the value to which the current at output 2 goes when the analyzer is in hold or senses a fault. To hold the output current at the last process value, choose non. To send the output current to a specified value, chose cur; cur is probably the better choice.

C. Fault History. Selecting SHO causes all the faults detected during the most recent event to be displayed one at a time. Several faults occurring at the same time are considered to be one fault event. To view the previous fault event, press the SCROLL (é) key. To clear the SHO history, press ENTER.

4.9.1 Default Setup (

ddFF

t). Refer to Figure 4-7.

1. Enter the set function menu by double pressing the ACCESS/ENTER key.

2. SCROLL (é) until dFt appears in the display.

3. Press SELECT to move to the next menu level. rL1 will show in the display.

4. To set default relay 1, SELECT rL1.

5. SCROLL (é ) to on, oFF, or non, and press SELECT to enter the desired mnemonic.

6. Repeat Steps 4 and 5 for relay 2.

7. To set the default current for output 1, SCROLL (é) to Cu1 and SELECT it.

8. SELECT non or cur. Choosing cur causes the display to change to a flashing number. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired value. Press ENTER to place the value in memory.

9. To set the default current for output 2, repeat steps 7 and 8.

10. Press the ENTER key to return to the main menu.

ANALYZER CONDITION

NORMAL HOLD FAULT

AL1/AL2 setting AL1/AL2 setting AL1/AL2 setting

On OFF FLt On OFF FLt On OFF FLt

(Alarm 2 (Alarm 2 (Alarm 2

only) only) only)

on PV dtmns – – + – – + – + oFF PV dtmns – – – – – – – + non PV dtmns – – PV dtmns – – PV dtmns – +

Default

setting

rL1/rL2

PV dtmns : Process value determines the alarm state.

+ : means the relay activates – : means the relay does not activate

TABLE 4-3. Relay States for Various Analyzer Conditions and Alarm/Default Configurations

oFF

non

FIGURE 4-7. Default Setup

non

cur

rL1

rL2

Cu1

Cu2

SHO

Page 32

4.10 INPUT FILTER. The input filter (Ftr) compen-

sates for noise by averaging a given number samples of the input signal. Increasing the sample number reduces noise but increases the response time (see Section 7.1 for more information).

4.10.1 Filter Response Setting.

1. Enter the set function menu by double pressing the ACCESS/ENTER key.

2. SCROLL (é) until Ftr appears in the display.

3. Press SELECT. A numeric display appears with the right hand digit flashing.

4. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired number of samples.

5. Press ENTER to place the number in memory.

4.11 ALARM SETPOINT. Configure the analyzer as described in sections 4.5 through 4.10 before programming the alarm setpoints. Refer to Figure 4-8.

1. Press the PV key to ensure the analyzer is not in the set function menu.

2. Press the ZERO/ALARM 1 or F.S./ALARM 2 key. SP1 for alarm 1 or SP2 for alarm 2 will show briefly, followed by the present alarm setpoint.

NOTE

If the alarm was set to OFF or, in the case of alarm 2, to FAULT during configuration, the analyzer will display oFF or FLt respectively when the ALARM key is pressed.

3. To change the alarm setpoint, press SELECT. AdJ will show briefly followed by a numeric display with right hand digit flashing.

4. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired setpoint.

5. Press ENTER to place the new value in memory. The display will show SP1 (or SP2) briefly followed by the new setpoint.

6. To program the second alarm setpoint repeat Steps 2 through 5.

NOTE

Relays are normally open (N.O.), but they can be changed to normally closed (N.C.). Locate the relay to be changed. K1 is relay 1, K2 is relay 2, and K3 is relay 3. For the relay selected, cut the conductor at the bowtie on the reverse side of the power supply board. For relay 1, solder a jumper between the center terminal and W4. For relay 2, solder a jumper between the center terminal and W6. For relay 3, solder a jumper between the center terminal and W8.

ACCESS

ENTER

ZERO

ALARM

F.S.

ALARM

SELECT

Press

Once

Press Once

Displays

Briefly

Displays

Briefly

Numeric

Display

Change to

desired

value

Press

Once

Numeric

Display

Setpoint

FIGURE 4-8. Alarm Setpoint

Model 1054B CL SECTION 4.0

CONFIGURATION

AdJ

SP1/SP2

Displays

Briefly

Page 33

B. Full Scale Setpoint. The full scale setpoint is the

reading that produces a 20 mA output. Hi1 identifies the full scale for output 1, and Hi2 identifies the full scale setpoint for output 2. For an analyzer equipped with automatic pH compensation, output 1 is chlorine and output 2 is pH.

1. Press the PV key to ensure that the analyzer is not in the set function menu.

2. Quickly double press the F.S./ALARM2 key. HI1 or HI2 will show briefly in the display, followed by the present full scale setpoint for the output selected. To switch outputs, press the F.S./ALARM2 key twice again and the display will toggle to the other output.

3. To change the setpoint, press the SELECT key. The display will acknowledge briefly with AdJ followed by a numeric display with the right hand digit flashing.

4. Use the SCROLL (é) and SHIFT (ç ) keys to display the desired setpoint.

5. Press ENTER to place the new value in memory. The display will show HI1 or HI2 briefly followed by the new zero setpoint.

6. If the analyzer has two setpoints, repeat steps 2 through 5 to program the full scale setpoint for the second output.

NOTE

For reverse output, enter the higher concentration or pH for zero and the lower concentration or pH for full scale.

4.12 OUTPUT SCALE EXPANSION. Configure the analyzer as described in Sections 4.5 through 4.10 before programming the zero and full scale setpoints. Refer to Figure 4-9.

A. Zero Setpoint. The zero setpoint is the reading that produces a 0 or 4mA output (depending on how the output was configured). LO1 identifies the zero setpoint for output 1, and LO2 identifies the zero setpoint for output 2. For analyzers equipped with automatic pH compensation, output 1 is chlorine and output 2 is pH.

1. Press the PV key to ensure the analyzer is not in the set function menu.

2. Quickly double press the ZERO/ALARM1 key. LO1 or LO2 will show briefly in the display, followed by the present zero setpoint for the output selected. To switch outputs, press the ZERO/ALARM1 key twice again and the display will toggle to the other output.

3. To change the setpoint, press the SELECT key. The display will acknowledge briefly with AdJ followed by a numeric display with the right hand digit flashing.

4. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired value.

5. Press ENTER to place the new value in memory. The display will show LO1 or LO2 briefly followed by the new zero setpoint.

6. If the analyzer has two outputs, repeat steps 2 through 5 to program the zero setpoint for the second output.

ACCESS

ENTER

ZERO

ALARM

F.S.

ALARM

SELECT

Press Twice

Press

Once

Displays

Briefly

Displays

Briefly

Numeric

Display

Change to

desired

value

Press

Once

Numeric

Display

Output

FIGURE 4-9. Output Scale Expansion

AdJ

LO1/LO2

HI1/H

Model 1054B CL SECTION 4.0

CONFIGURATION

LO1/LO2

HI1/H

Displays

Briefly

Page 34

4.13 SIMULATE CURRENT OUTPUT. The analyzer

can provide a simulated output to check the operation of pumps, valves, and recorders. The output can be in current (dO1) or in percent of full scale (Pc1). The output configuration programmed in Section 4.9 determines which mnemonic appears. If the analyzer has dual outputs, i.e., the pH correction board has been installed, a simulated signal can be generated at both outputs. Pc1 or dO1 identifies output 1 (free residual chlorine), and Pc2 or dO2 identifies output 2 (pH). Refer to Figure 4-10.

A. Simulate Output in Percent. The simulated output will be in percent full scale if Ot1 or Ot2 in Section 4.8 was configured to display percent (Pct).

1. Press the PV key once to ensure that the analyzer is not in the set function menu.

2. Quickly double press the OUTPUT/PV key. Pc1 or Pc2 will show briefly in the display, then the display will change to the last simulated output. If the analyzer has dual outputs and the wrong output is displayed, double press the OUTPUT/PV key a second time. The display will toggle to the other output.

3. To make the analyzer generate the simulated output, press the SELECT key. SP1 or SP2, depending on which output was selected in step 2, will appear momentarily, followed by a numeric display with the right hand digit flashing.

4. To change the simulated output to a different value, use the SCROLL (é) and SHIFT (ç ) keys.

5. Press ENTER to store the new value in memory. The display will briefly show Pc1 or Pc2 followed by the entered value. Because the analyzer is in hold while the simulated current is being generated, the display flashes and the mnemonic HLd appears occasionally. After one minute the display returns to the measured value (flashing), the hold flag remains on, and the output remains at the simulated value. The relays will operate as programmed in Section 4.9.

6. To end the simulated output and remove the analyzer from hold, quickly double press the HOLD/TEMP key. The display stops flashing, the hold flag turns off, and the output returns to the value determined by the scale expansion programmed in Section 4.12.

B. Simulate Output in Current. The simulated output will be in mA if Ot1 or Ot2 in Section 4.8 was configured to display current (doc).

1. Press the PV key once to ensure that the analyzer is not in the set function menu.

2. Quickly double press the OUTPUT/PV key. dO1 or dO2 will show briefly in the display, then the display will change to the last simulated output. If the analyzer has dual outputs and the wrong output is displayed, double press the OUTPUT/PV key a second time. The display will toggle to the other output.

Model 1054B CL SECTION 4.0

CONFIGURATION

ACCESS

ENTER

OUTPUT

SELECT

Press Twice

Press Once

Displays

Briefly

Displays

Briefly

Numeric

Display

Change to

desired

value

Press

Once

FIGURE 4-10. Simulate Current Output

Si1/Si2

SP1/SP2

dO1/dO2 Pc1/Pc2

Numeric

Display of

Output

dO1/dO2 Pc1/Pc2

Displays

Briefly

Page 35

Model 1054B CL SECTION 4.0

CONFIGURATION

3. To change the simulated output, press the SELECT key. Si1 or Si2, depending on which out- put was selected in step 2, will appear momentarily, followed by a numeric display with the right hand digit blinking.

4. To change the simulated output to a different value, use the SCROLL (é) and SHIFT (ç ) keys.

5. Press ENTER to store value in memory. The display will briefly show dO1 or do2 followed by the entered value. Because the analyzer is in hold while the simulated current is being generated, the display flashes and the mnemonic HLd appears occasionally. After one minute the display returns to the measured value (flashing), the hold flag remains on, and the output remains at the simulated value. The relays will operate as programmed in Section 4.9.

4.14 pH CORRECTION. Free residual chlorine is the

sum of hypochlorous acid and hypochlorite ion. The fraction of each species present is determined by the pH. Because the sensor responds only to hypochlorous acid, a pH correction is necessary to convert sensor response into the total concentration of free chlorine. The analyzer permits either automatic or manual pH correction. In automatic pH correction, the analyzer uses the measured pH of the sample to calculate the total concentration of free chlorine. In manual pH correction, the user keys in the sample pH.

A. Analyzer Equipped with Automatic pH Correction. Select on to enable and select oFF to dis-

able automatic pH correction. If automatic pH correction is disabled, a manual pH value must be entered. The analyzer uses the entered value for the correction.

1. Press the PV key to ensure that the analyzer is not in the set function menu.

2. Press CAL. The display will show PH momentarily followed by the present pH.

3. SCROLL (é) until APH appears in the display, then press SELECT. The display will be flashing either on or oFF.

4. Press SCROLL (é) until the desired mnemonic appears in the display. Press ENTER to place the selection in memory.

5. If on was selected, mnemonic PH appears momentarily, and the display returns to the current pH value.

6. Press the PV key to return the display to the chlorine reading.

7. If oFF was selected, the mnemonic FPH appears followed by a number. Press SELECT. AdJ appears momentarily followed by a number with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired pH value. Press ENTER to store the value in memory. FPH appears momentarily, and the entered number reappears in the display. The analyzer will use the pH value entered in this step for future pH corrections.

8. Press the PV key to return the display to the chlorine reading.

B. Analyzer Without pH Correction. The analyzer uses the pH value entered in this step for all corrections.

1. Press the PV key to ensure that the analyzer is not set in the set function menu.

2. Press CAL. The display will show FPH momentarily followed by a number.

3. Press SELECT. AdJ will appear momentarily followed by a number with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired pH value. Press ENTER to store the value in memory. FPH appears momentarily, and the entered number reappears in the display.

4. Press the PV key to return the display to the chlorine reading.

Page 36

If the temperature reading from the analyzer does not agree with the standard thermometer, adjust the analyzer temperature display.

1. Press the PV key to ensure that the analyzer is not in the set function menu.

2. Press the TEMP key once. The display will briefly show °F or °C followed by the present temperature in either °F or °C (depending on the units selected in Section 4.7).

3. Press the SELECT key. AdJ will show briefly followed by a numeric display with the right hand digit flashing.

4. Use the SCROLL (é) and SHIFT (ç ) keys to change the display to the correct value.

5. Press ENTER to place the new value in memory. °F or °C shows briefly followed by the corrected temperature.

Temperature calibration can be done without removing the sensor from the process stream. To ensure that the reference instrument and the 499A CL sensor are measuring the same sample temperature, install the reference thermowell as close to the sensor as possible. If a thermowell is not available, measure the temperature of the process at a sample tap. Let a sample of the process stream, taken from a point as close to the sensor as possible, discharge into the bottom of a small container. To minimize heat exchange between the sample and the ambient air, let the sample flow as rapidly as possible. Place the reference temperature sensor in the container so that it is completely bathed in the sample. Allow adequate time for equilibration and compare the analyzer temperature reading with the reference temperature. Adjust the analyzer reading if necessary.

5.3.2 Analyzer Zero. The analyzer/sensor loop must be

zeroed every time a new sensor is place in service or an existing sensor is rebuilt. Rebuilding a sensor means replacing the membrane and/or replenishing the electrolyte. Zero the loop by placing the sensor in chlorinefree water, and allow it to operate until the current reaches a minimum value. The minimum current is called the residual current.

Model 1054B CL SECTION 5.0

START-UP AND CALIBRATION

SECTION 5.0

START-UP AND CALIBRATION

5.1 GENERAL. This section gives the start-up and cali-

bration procedures for the Model 1054B CL Analyzer with the Model 499A CL sensor and, if appropriate, a Model 389, 396P, or 399 pH sensor.

5.2 START-UP. When the analyzer is powered up, a polarization voltage is applied between the anode and cathode. The sensor current is initially very high but then falls off quickly and usually reaches a steady state after a few hours.

5.3 CALIBRATION.

This section describes how to do the following:

1. calibrate the temperature response of the chlorine sensor;

2. zero the chlorine sensor;

3. calibrate the chlorine sensor against a grab sample or a known standard

4. calibrate the pH sensor.

5.3.1 Temperature Standardization. The 1054B CL analyzer uses a membrane-covered amperometric sensor. Because the permeability of the membrane is a strong function of temperature, accurate temperature measurement is necessary for accurate chlorine measurements. The 499A CL sensor measures temperature using a 100 ohm platinum RTD. The accuracy of a new sensor/analyzer loop is about ±1°C, which is adequate for most applications. A new sensor seldom requires temperature calibration. If ±1°C accuracy is not acceptable or if the temperature measurement is suspected of being in error, use the following procedure to calibrate the RTD.

1. Immerse the sensor in a container of water to at least an inch from the bottom of the lower threads. If the temperature of the water is appreciably different from ambient, use an insulated container.

2. Place a calibrated thermometer in the water with the sensor.

3. Stir the water continuously.

4. Allow temperature readings to stabilize. The stabilization step may take as long as 30 minutes.

5.1 General

5.2 Start-Up

5.3 Calibration

Page 37

Model 1054B CL SECTION 5.0

START-UP AND CALIBRATION

1. Place the sensor in a container of fresh distilled or

deionized water. Immerse the sensor to at least an inch from the bottom of the lower threads. Add 4 to 6 mL of pH 7 buffer for every 1000 mL of water. If pH 7 buffer is not available, add about 0.50 gram of a neutral salt, like sodium chloride or potassium chloride, to the water. The buffer or salt increases the ionic concentration of the water and reduces the rate of loss of electrolyte through the sensor membrane.

2. Allow the sensor to stabilize. The stabilization time

may be as long as 4 hours. Periodically measure the current while the sensor is stabilizing. To view the current, quickly double press the ACCESS/ ENTER key. Set will be displayed momentarily, then the display will change to in. Press the SELECT key to display the current.

NOTE

The sensor current and, therefore, the displayed concentration will fluctuate and may even become negative while the loop is zeroing.

3. Once the current is stable, press the

ACCESS/ENTER key twice to return to the top of the main menu.

4. Press the SCROLL (é) key until -O- is displayed.

5. Press the SELECT key. -O- will flash for about five

seconds and then freeze. The analyzer loop is now zeroed.

6. Press the PV key to leave the set function menu.

The analyzer should read near zero ppm.

5.3.3 Calibrating the Chlorine Sensor Against a

Grab Sample. The chlorine sensor can be calibrated

against a grab sample taken from the process stream. Observe the following precautions:

1. Calibrate the pH sensor before starting the grab

sample calibration. See Sections 5.3.5, 5.3.6, and

5.3.7. If automatic pH correction is not being used, measure the pH of the process stream and enter the value before starting the calibration. See Section 4.14.

2. Ensure that the grab sample is representative of

the liquid flowing past the senor. Take the sample from the process stream at a point as close to the sensor as possible.

3. The sensor requires continuous flow of liquid past it. Place the sample valve downstream from the sensor to avoid starving the sensor when taking the sample.

4. Flush the sample line thoroughly then rinse the sample bottle several times before sampling. Because aqueous solutions of free chlorine decompose rapidly in light, collect the sample in a colored glass bottle.

5. Glassware used for sampling may have a chlorine demand. Before taking the sample, soak the sample bottle for several days in a solution of dilute chlorine (20 drops of bleach in one liter of water) and rinse thoroughly. Check the bottle for residual chlorine before using it for samples.

6. Aqueous solutions of free chlorine are unstable. Start the analysis immediately after collecting the sample. See Standard Methods

, 19th edition,

4500-CI for appropriate analytical methods.

To calibrate the sensor follow the steps below:

1. Wait until the analyzer reading is stable or drifting slowly. Note the reading and take the sample.

NOTE

For best results calibrate the sensor when the chlorine level in the process stream is at the high end of the normal operating range. Ideally, the senor current should be at least 70 nanoamps when the senor is calibrated. If the pH of the process stream is high and the chlorine levels are low, the sensor current might be too low for an accurate calibration.

2. Immediately measure the free residual chlorine concentration in the sample.

3. Note the present concentration of chlorine in the sample stream. Be sure the concentration is stable. Calculate the calibration value using the following formula:

C = (X/Y) (A)

where C is the calibration value to be entered, X is the present analyzer reading, Y is the analyzer reading at the time the grab sample was taken, and A is the concentration of free residual chlorine in the grab sample.

4. Enter the calibration value:

A. Press the PV key to make sure the analyzer

is not in the set function menu.

Page 38

B. Press the SELECT key. Std appears momen-

tarily, then the display changes to the last free chlorine reading. The right hand digit will be flashing.

C. Use the SCROLL (é) and SHIFT (ç) keys

to change the display to the value calculated in step 3.

D. Press the ENTER key to place the calibra-

tion value in memory. The analyzer is now standardized.

5.3.4 Calibration Against a Known Standard. If calibration against a grab sample is not feasible, the loop can be calibrated against a solution containing a known concentration of chlorine.

1. The procedure requires that pH be known. If automatic pH correction is being used, calibrate the pH sensor following the procedure in Section

5.3.6 before starting. If automatic pH correction is not being used, obtain and calibrate a pH meter and sensor.

2. Pour about 900 mL of process water into a 1-liter beaker. Place the chlorine and pH sensors in the beaker. Place a magnetic string bar in the beaker and begin stirring. Adjust the stirring speed until the chlorine reading is essentially independent of stirring speed. Do not stir so fast that a vortex appears. A thin sheet of plastic foam placed between the stirrer and the beaker will insulate the liquid from the heat generated by the stirrer.

3. Using household bleach, adjust the chlorine level until it is at the high end of the normal operating range. Bleach contains about 45,000 ppm chlorine (as Cl2). Adding 0.05 mL of bleach (one drop) to 1000 mL of sample increases the chlorine level about 2 ppm. To increase the chlorine level by a smaller amount, dilute the bleach before adding it to the sample.

4. Monitor the temperature, pH, and the chlorine reading until all are stable or drifting slowly. If manual pH correction is being used, enter the pH value. Note the analyzer reading and immediately remove a sample of the standard solution for analysis. Determine the concentration of free chlorine in the sample. Aqueous solutions of free chlorine are unstable. Start the analysis immediately after collecting the sample. See Standard Methods, 19th edition, 4500-CI for appropriate analytical methods

5. Note the present concentration of chlorine in the standard. Be sure the concentration is stable. Calculate the calibration value using the following formula:

C = (X/Y) (A)

6. Enter the calibration value:

A. Press the PV key to make sure the analyzer

is not in the set function menu.

B. Press the SELECT key. Std appears

momentarily, then the display changes to the last free chlorine reading. The right hand digit will be flashing.

C. Use the SCROLL (é) and SHIFT (ç) keys

to change the display to the value calculated in step 3.

D. Press the ENTER key to place the calibra-

tion value in memory. The analyzer is now standardized.

5.3.5 Calibration of the pH Sensor. Because the

chlorine sensor reacts only with hypochlorous acid and the fraction of total chlorine present as hypochlorous acid changes with pH, a correction is necessary to convert the measured signal to total free chlorine. The correction can be manual or automatic. Manual pH correction is appropriate when the pH of the sample varies by no more than pH 0.1 or 0.2 units. If the variability is greater, automatic pH correction is recommended. Automatic pH correction requires a pH sensor with integral preamplifier and a 1054B CL Analyzer with a pH CPU board.

5.3.6 Two Point Buffer Calibration. This section

gives the procedure for calibrating a pH sensor using two buffers.

1. Obtain pH 4, 7, and 10 buffer solutions. Use buffers traceable to NIST (National Institute of Standards and Technology). Select the two buffers that bracket the likely pH of the sample. For most applications, pH 7 and pH 10 buffer are appropriate. The pH of a buffer changes with temperature. Be sure pH-temperature data are available for the buffers selected.

Model 1054B CL SECTION 5.0

START-UP AND CALIBRATION

Page 39

2. Press the PV key to ensure the analyzer is not in the set function menu.

3. Rinse the pH sensor with deionized water and using a clean, absorbent tissue gently daub (DO NOT WIPE) excess water from the sensor. Immerse the sensor in the first buffer to at least two inches above the tip of the sensor. Swirl a few times to dislodge bubbles. Place a calibrated thermometer in the container with the buffer.

4. Let the sensor reach the same temperature as the buffer. If the temperature of the buffer and the process stream from which the sensor was taken differ by more than a few degrees, 10 to 20 minutes may be needed for temperature equilibration.

5. Press CAL to display the pH reading. Once the pH is constant, SCROLL (é) until bF1 appears in the display.

6. Press SELECT. AdJ appears momentarily, followed by a number with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the pH of buffer 1 at temperature of the buffer. Press ENTER to store the first buffer value in memory. bF2 appears momentarily in the display. The analyzer is now ready for the second buffer.

7. Remove the sensor from the first buffer and rinse with deionized water. Use a clean, absorbent tissue to gently daub (DO NOT WIPE) excess water from the sensor. Immerse the sensor in the second buffer to at least two inches above the tip of the sensor. Swirl the sensor a few times to dislodge bubbles. The display will show the apparent pH of the buffer. Also rinse the thermometer and place it in the buffer.

8. Once the pH reading is stable, press SELECT. AdJ appears momentarily, followed by a number with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the pH of buffer 2 at the temperature of the buffer. Press ENTER to store the second buffer value in memory.

9. Compare the actual electrode slope with the theoretical slope. Press the SCROLL (é) key until

SLP appears in the display. Then press SELECT. AdJ appears momentarily, followed by the current

slope.

CAUTION

The right hand digit will be flashing, and the slope can be changed at this point. Because the purpose of the buffer calibration was to set the electrode slope and offset, DO NOT AL TER THE SLOPE. Press ENTER to save the value.

The measured slope should be between 95 and 105% of the theoretical slope.

Temperature Slope

(°C) (mV/decade)

15 57.2 20 58.2 25 59.1 30 60.1 35 61.1

10. Press PV to return the display to the free residual chlorine reading.

11. To read the pH cell voltage, press CAL, then SCROLL (é) until Ein appears in the display. Press SELECT to display the cell voltage. Press

PV to return the display to the chlorine reading.

5.3.7 Offsetting pH Readings. If desired, the analyz-

er reading can be made to agree with a reference pH measurement. Offsetting brings the readings into agreement at one point only. It retains the slope determined by the last two point calibration.

1. Wait until the pH of the process stream is stable or slowly changing. Use a calibrated pH meter to measure the pH. Note the analyzer reading at the time the reference measurement is made.

2. The offset is the absolute value of the difference between the analyzer and reference meter readings.

3. Press CAL. The display will change to pH. Press SELECT. Std will show momentarily, then the display will change to the present pH reading with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to the desired value. Press ENTER to store the value in memory.

5. Press PV to return the display to the free residual chlorine reading.

Model 1054B CL SECTION 5.0

START-UP AND CALIBRATION

Page 40

Model 1054B CL SECTION 6.0

KEYBOARD SECURITY

SECTION 6.0

KEYBOARD SECURITY

KEYBOARD SECURITY. The security feature allows

the user to enter a three digit security code to prevent accidental changes to the analyzer configuration and calibration. When the security feature is activated, all read functions can be accessed normally, but the instrument configurations, alarm settings, zero and full scale settings, and calibration cannot be changed. If an attempt is made to access a protected function, the mnemonic LOC appears momentarily followed by a numeric display. Keying in the correct code unlocks the analyzer and returns the display to the function just attempted. Keying in an incorrect code results in the mnemonic bAd followed by the numeric display ready to receive the correct code. Once the analyzer is unlocked, it allows access to all functions until it is powered down or no keystrokes are made for two minutes.

NOTE

To retrieve a forgotten code, press and hold the ACCESS/ENTER key for five seconds. The access code will be displayed. Release the ACCESS/ENTER key and press it again to unlock the analyzer.

Keyboard Security Procedure.

1. Enter the set mode by double pressing the

ACCESS/ENTER key.

2. SCROLL (é) until COd appears on the display.

Press SELECT.

3. Use the SCROLL (é) and SHIFT (ç) keys to

change the display to the desired value. Press ENTER to place the number in memory. To disable the security feature, enter 000. The security feature will not activate until two minutes have elapsed without keyboard activity or until power to the analyzer has been removed and restored.

Page 41

Model 1054B CL SECTION 7.0

THEORY OF OPERATION

SECTION 7.0

THEORY OF OPERATION

The Model 1054B Free Residual Chlorine Analyzer is designed for use with the Model 499A CL sensor. The analyzer/sensor loop automatically and continuously measures the concentration of free chlorine in water. Free chlorine is defined as the sum of the concentrations of hypochlorous acid (HOCI) and hypochlorite ion (OCI-) expressed as chlorine (CI2). Because hypochlorous acid is a weak acid, the relative amount of each species (HOCI and OCI-) depends on pH and to a lesser extent on temperature. As the pH increases, the fraction of hypochlorite increases and the fraction of hypochlorous acid decreases. The total concentration of free chlorine remains constant.

The sensor is a membrane covered amperometric detector. It consists of the membrane, a platinum cathode, a silver anode, and the electrolyte solution (potassium chloride). The membrane, which is a proprietary, microporous polymer, stretches tightly over the cathode. Because the membrane is hydrophilic, it allows passage of both hypochlorous acid and hypochlorite ion (as well as other substances dissolved in the sample) into the thin film of electrolyte at the surface of the cathode. Once in the electrolyte film, hypochlorous acid and hypochlorite diffuse to the surface of the cathode where a polarizing voltage applied to the cathode reduces hypochlorous acid to chloride. The electrons required for the reaction come from the silver anode. Therefore, as the sensor operates, the anode is oxidized to silver chloride. Because the concentration of hypochlorous acid in the sensor is practically zero, a concentration gradient continuously forces hypochlorous acid from the sample into the sensor where it is reduced. The current produced by the electrochemical reaction in the sensor is proportional to the concentration of free chlorine in the sample.

Although the sensor reduces only hypochlorous acid, the current produced for a given concentration of hypochlorous acid is greater than expected. The reason is conversion of hypochlorite to hypochlorous acid in the sensor. Free chlorine is an equilibrium mixture of hypochlorous acid and hypochlorite. As the sensor operates, it consumes hypochlorous acid, upsetting the equilibrium and causing the conversion of hypochlorite to hypochlorous acid. The hypochlorous acid thus produced is reduced at the cathode, making the current greater than the value

predicted from the equilibrium concentration alone. Because conversion of hypochlorite to hypochlorous acid in the sensor is not complete, the sensitivity (current generated per ppm of free chlorine) is not constant, but falls as the pH increases. The sensitivity of the 499A CL sensor is about 250 nanoamps/ppm at pH 7 and drops to about 50 nanoamps/ppm at pH 9.5. The analyzer automatically compensates for the change in sensitivity with pH. Although the analyzer responds well to gradual changes in pH, a step change usually produces a sudden change in chlorine reading followed by a gradual settling toward the final value. Normally, several minutes are needed for the chlorine reading to recover after a pH step.

Temperature also influences the sensitivity. The permeability of the membrane increases about 3% for every °C rise in temperature. Increased permeability allows more free chlorine (HOCI and OCI-) to pass through the membrane to be reduced at the cathode. Therefore, current and the apparent free chlorine concentration increase even though the actual free chlorine concentration did not change. The change in membrane permeability with temperature is predictable, and the analyzer can readily compensate for it. The analyzer also compensates for the affect of temperature on the relative amounts of hypochlorous acid and hypochlorite ion present at any pH.

The cleanliness of the membrane surface and the flow of liquid past the sensor also affect sensitivity. A sensor with a fouled or dirty membrane has lower sensitivity than a sensor with a clean membrane because fouling hinders the passage of chlorine through the membrane. Flow influences the sensitivity because the analyzer consumes the chlorine it measures. Therefore, to sustain the current, fresh chlorine-containing sample must be continuously supplied to the membrane. If the sample flow is inadequate, chlorine readings will be low.

The 1054B CL Analyzer converts the sensor current to concentration by multiplying the current by a sensitivity factor. The sensitivity factor is determined by the calibration procedure described in Section 5.0, by the membrane permeability temperature factor, and by the pH compensation factor. Because the sensitivity is about 200 nanoamps/ppm, low concentrations of chlorine produce fairly low currents. To remove the noise in these measurements, electronic filtering is helpful. A 25 sample filter (see Section 4.10) usually reduces noise to negligible levels while increasing response time only by about 13 seconds.

Page 42

Display Description Display Description

EEEEPP

EEPROM write error (bad EEPROM chip). t

ccHH

High temperature compensation error.

CCHH55

ROM failure (check sum error) (bad ROM chip). t

ccLL

Low temperature compensation error.

rrccii

Reverse current input.

OOrrnn

Overrange error (+20.00 ppm).

SSEEnn

Sensor line error or wire length error.

EEccii

Excessive current input.

CCOOPP

Computer not operating properly.

FFAACC

Factory calibration required.

CCrrdd

pH board not communicating

SSLLPP

pH electrode slope error

iinn LL

Input low

iinnHH

Input high

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

8.1 DIAGNOSTICS. The 1054B CL Analyzer has a diag-

nostic feature that automatically searches for and identifies fault conditions. Faults arise from analyzer and sensor malfunctions and from improper wiring and connections. If the analyzer identifies a fault, the display flashes and shows the fault flag and fault mnemonic. In addition, the current outputs and relays will operate as configured in Section 4.9. If more than one fault exists, the display sequences through the faults at eight second intervals. The analyzer will continue to display the fault code mnemonic(s) until the fault has been corrected. Fault mnemonics are suppressed when the analyzer is in the set function. Selecting SHO from the set function menu displays the two must recent fault conditions. Refer to Section 4.1 1 for more details.

8.1.1 Fault Message Codes. Table 8-1 lists the fault message codes and an explanation of the cause of each fault. Refer to Table 8-3 for additional information.

8.2 TROUBLESHOOTING. The Model 1054B CL Analyzer is designed with state of the art microprocessor circuitry, making troubleshooting simple and direct. Once a problem has been identified, fixing it is usually as simple as replacing a printed circuit board.

8.2.1 Troubleshooting Guide. Refer to Table 8-3 for assistance in interpreting fault codes and identifying the cause of analyzer malfunctions and measurement problems. The troubleshooting guide also gives suggested remedies for common problems.

8.2.2 Improper Installation. If failure occurs when the

analyzer is first started up, check the following:

1. If a fault mnemonic is showing, refer to Table 8-1

and Table 8-3 to identify the problem and the likely cause.

2. Check wiring connections between the sensor and

analyzer.

3. Check for proper operation of the sensor. Verify

that the process stream contains free chlorine.

8.2.3 Display Test. Select mnemonic dtS from the set

function menu to activate all display segments and flags. Refer to Figure 2-2.

8.2.4 Software Version. Select UEr from the set func-

tion menu to display the software revision of the CPU. The revision number may be requested by factory service personnel.

1. Double press the ACCESS/ENTER key to enter

the set function menu. SCROLL to UEr and press SELECT.

2. Press the ACCESS/ENTER key to return to the

first level of the menu, or press the PV key to leave the set function menu.

TABLE 8-1. Fault Message Codes

8.1 Diagnostics

8.2 Troubleshooting

8.3 CPU and Power Board Replacement

8.4 Maintenance

Page 43

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

8.2.5 Temperature Measurement. Accurate determi-

nation of chlorine requires accurate measurement of temperature. The sensor uses a 100 ohm platinum RTD temperature element. Disconnect the RTD leads and measure the resistances shown in Figure 8-1. The measured resistance should agree with the value in the table to within about 1%. Minor discrepancies (between 1 and 5%) can be calibrated out. See Section 5.3.1. See Figure 8-1.

To check the performance of the analyzer, simulate the RTD by connecting a known resistance between terminals 5 and 6 on TB2. See Figure 8-2 and Table 8-2.

FIGURE 8-2. Temperature Simulation into 1054BCL Analyzer. The measured temperature should equal the value from the table to within ±2°C. If the measured temperature is incorrect, calibrate the analyzer against the standard resistance. After calibrating, check the temperature response of the sensor. See Section 5.3.1.

FIGURE 8-1. Three-wire 100 ohm Platinum RTD. Three-wire 100 ohm Platinum RTD. Consult Table 8-2 for resistance temperature data. Lead resistance is about 0.05 ohm/ft at 25°C. Therefore, 25 feet of cable increases the resistance by about 2.5 ohm. The resistance between the RTD and and RTD sense leads should be less than 3 ohm. Lead colors for both standard cable and optimum EMI/RFI cable are given in the figure.

TABLE 8-2. RTD Resistance Values

Temperature Resistance

0°C 100.0 ohms 10°C 103.9 ohms 20°C 107.7 ohms 30°C 111.7 ohms 40°C 115.5 ohms 50°C 119.4 ohms

Page 44

8.2.6 pH Sensor Performance. If pH measure-

ments seem inaccurate, the problem is most likely caused by a dirty or defective sensor.

1. Inspect the glass electrode for physical damage. If the glass is cracked or broken, replace the sensor.

2. If the electrode appears undamaged, check its performance in buffers. Perform the two point calibration described in Section 5.3.6. Verify that the slope is between 95% and 105% of the expected value.

3. Occasionally, glass electrodes can be rejuvenated by soaking the glass bulb in dilute (10%) hydrochloric acid or in pH 4 buffer for 30 to 60 minutes. If the electrode was soaked in acid, soak it in pH4 buffer for at least 4 hours before calibrating.

NOTE

Soaking the pH sensor in hydrochloric acid, will probably expose the reference junction to acid as well. If the acid enters the junction, subsequent measurements may be substantially offset from the expected value and will drift as the acid diffuses out of the junction.

4. If the sensor still fails to calibrate properly after cleaning and rejuvenating, it must be replaced.

8.2.7 Electronic Simulation for pH. Most pH

measurement problems can be traced to the sensor. If necessary, however, the performance of the analyzer can be checked by simulating a pH 7 input.

1. With the pH sensor connected, short terminal 6 and 7 on TB3.

2. Verify that the pH reading is close to 7.00.

3. If the measured pH is appreciably different from

7.00, the pH CPU board probably needs replacing.

8.2.8 Electronic Simulation for Chlorine. The majority of chlorine measurement problems can be traced to the sensor. See Table 8-3 for troubleshooting and corrective actions. If necessary the performance of the analyzer can be checked by simulating a current between the cathode and anode input terminals.

1. Disconnect the sensor and wire the circuit shown in Figure 8-3.

2. If the analyzer is so equipped, disable the automatic pH correction. Press CAL, then press SCROLL (é) until APH appears in the display. Press SELECT and SCROLL (é ) until

appears in the display. Press ENTER. If 7.00 does not appear in the display at this point, press SELECT. A numeric display will appear with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç ) keys to change the display to

7.00. Press ENTER to store the number in memory.

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

1054B CL

(Rear View; no cover)

FIGURE 8-3. Electronic Bench Check Setup

Page 45

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

3. If the analyzer does not have automatic pH correction, set the manual pH to 7.00. Press CAL followed by SELECT. A numeric display will appear with the right hand digit flashing. Use the SCROLL (é) and SHIFT (ç) keys to change the display to

7.00. Press ENTER to store the number in memory.

4. Electronically zero the analyzer. Disconnect the lead from terminal 1 on TB-2. Double press the ACCESS/ENTER key to enter the set function menu. SCROLL (é) until -0- appears in the display. Press ENTER. The display will flash for about five seconds and freeze. Press the PV key. The display will show 0.000 ppm. Reconnect the lead to TB2-1.

5. Connect the negative end of the battery to point A between the two 1-megohm resistors. The circuit will generate about 1400 nanoamps (1.4 microamps). To measure the current, double press the ACCESS/ ENTER key to enter the set function menu. The mnemonic SEt will appear momentarily followed by in. Press SELECT to display the current in nanoamps.

NOTE

A new 1.5 volt battery generates about 1.6 volts. Because the battery opposes the 200 mV polarizing voltage from the analyzer, the voltage is about 1.4 volts. The circuit resistance is 1 megohm, so the expected current is 1.4 microamps.

6. Standardize the analyzer to 10 ppm. Press the PV key followed by SELECT. Use the SCROLL (é) and SHIFT (ç ) keys to change the display to

10.00. Press ENTER to store the value in memory.

7. Check linearity by connecting the negative end of the battery to point B, thus placing the 1 megohm resistors in series. The measured current will be close to 700 nanoamps, and the simulated chlorine reading will be 5.0 ppm.

8.3 CPU AND POWER BOARD REPLACEMENT. If

a problem with the CPU or the power board required that the board be replaced, the installation procedures shipped with the replacement board must be followed exactly. Failure to follow the instructions will cause the microprocessor to be incorrectly programmed and will require the analyzer to be returned to the factory for reprogramming.

8.4 MAINTENANCE. To maintain the appearance

and extend the life of the enclosure, clean it regularly with a mild soap and water solution followed by a clean water rinse.

Page 46

SYMPTOM PROBLEM/ACTION

Fault Code rci Message typically appears while the sensor is being zeroed and usually disappears after several

hours. If the message persists, verify that the sensor is properly wired.

Fault Code bAd 1. The current generated by the sensor is too small for accurate calibration. Check the sensor

current. To calibrate the sensor, the current should be at least 70 nanoamps.

2. Increase the chlorine level in the calibration sample.

3. Service the sensor. Use a cotton-tipped swab to polish the cathode with a paste of sodium bicarbonate (baking soda) or, better, alumina. Use type A dry powder alumina intended for metallographic polishing of medium or soft metals. Rinse the cathode thoroughly with deionized water. Replenish the electrolyte solution and install a new membrane.

Fault Code not 1. A pH CPU board is not installed, or if a board is installed, the analyzer does not recognize it.

2. If a pH CPU board is installed, reset the analyzer by removing the power for a few minutes and then restoring it.

Fault Code tcH /tcL 1. A temperature compensation error is present.

2. Verify that the sensor is properly wired to the analyzer.

3. Perform temperature calibration. See Section 5.3.1.

4. Use manual temperature compensation to bypass a faulty RTD and replace the faulty sensor as soon as possible.

Fault Code Orn /Eci 1. Current generated in the sensor is too high.

2. Check the membrane for splits or tears. Replace the membrane if it appears damaged. Replenish the electrolyte and recalibrate the sensor.

Fault Code SEn 1. Sensor is not properly wired to the analyzer.

2. Check connections, particularly TB2-6 and TB2-7.

3. Check for loose connections, bad lug crimps, and broken conductors.

Fault Code EEP /CHS 1. There is a problem with the chlorine CPU circuit board.

2. Replace the chlorine CPU board.

Fault Code  EEP /  CHS 1. There is a problem with the pH CPU circuit board. The apostrophe prefix in the fault mnemonic

signifies the pH board.

2. Replace the pH CPU board.

Chlorine sensor 1. Be sure the membrane is completely covered with chlorine-free water and that no air will not zero bubble is trapped against the membrane.

2. Allow sufficient time for sensor to zero – as long as 24 hours.

3. Check sensor membrane for damage. Replace membrane if necessary.

4. Perform sensor electrical checks. Refer to the troubleshooting section of the sensor instruction manual for details.

5. Check analyzer performance. See Section 8.2.8 for details.

Chlorine sensor has 1. Verify that the flow of sample past the sensor is adequate. Refer to the sensor instruction little or no response to manual for suggested flows. changes in chlorine 2. Inspect the surface of the membrane for fouling. Use a stream of water from a wash bottle to concentration clean the membrane. If washing the membrane does not improve the response, service the

electrode. Use a cotton-tipped swab to polish the cathode with a paste of sodium bicarbonate (baking soda) or, better, alumina. Use type A dry powder alumina intended for metallographic polishing of medium or soft metals. Rinse the cathode thoroughly with deionized water. Replenish the electrolyte solution and install a new membrane.

3. Perform the sensor electrical checks. Refer to the troubleshooting section of the sensor instruction manual for details.

4. Check analyzer performance. See Section 8.2.8 for details.

Chlorine reading erratic 1. Readings are typically erratic when a new or rebuilt sensor is first placed in chlorine-free water

to zero. The current usually stabilizes after several hours, although it may require as long as 24 hours. Adjusting the pH to between 5 and 7 helps reduce the noise.

2. If the pH of the sample is fluctuating, the chlorine reading will fluctuate slightly even if automatic pH correction is being used. Remove the chlorine sensor from the process stream, and place

TABLE 8-3. Troubleshooting Guide

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

Page 47

it in a chlorine sample buffered to about pH 7. If readings stabilize, the erratic readings are caused by fluctuations in pH.

3. If erratic readings persist in a buffered solution, the chlorine sensor may need service. Inspect the membrane and the wooden junction for damage, and replace them if necessary. Also ensure that the sensor is filled with electrolyte. Recalibrate the sensor.

4. Check the pH sensor for noisy operation. Place the sensor in buffer. If pH readings in the buffer are noisy, replace the sensor. If pH readings in the buffer are quiet, but are noisy when the buffer is stirred, replace the sensor. Also check the response of the sensor in a stirred and quiescent sample of the process stream. If readings are stable in the quiescent solution, but noisy in the stirred solution, replace the sensor.

pH output and alarm 1. No pH board is installed in the analyzer; therefore, the options are not available. options are not 2. If the analyzer was retrofitted with a pH board, see the instruction sheet supplied with the available under menus board for the procedure for configuring the board.

pH sensor has wrong 1. Verify that the pH sensor has the proper preamplifier and is correctly wired to the analyzer. or no response to pH 2. Check performance of pH sensor in buffer (see Section 5.3.6). changes 3. Perform pH simulation. If analyzer responds to simulated pH but not to the sensor, replace

the sensor.

Display is scrambled Replace the display board. or all line segments are lit. Current outputs work properly.

Display is scrambled or Replace the chlorine CPU board. all line segments are lit. Current outputs do not work and/or relays are chattering.

Analyzer does not res- 1. Verify that the ribbon cable between the keypad and the display board is firmly seated in the pond or responds im- display board connector. properly to key presses. 2. Replace front panel.

No display 1. Verify that the proper AC power is being supplied to the analyzer.

2. Check the fuses on the power supply board. Replace fuses if necessary.

3. Verify that the display board is properly connected to the other boards.

4. Replace the power supply board.

No chlorine current 1. Verify that the output terminals are not shorted. Voltage with no load connected across TB3-1 output, but pH current and TB3-2 should be about 15 Vdc. output is working 2. Replace power supply board.

3. Replace chlorine CPU board.

No pH current output, 1. Verify that the output terminals are not shorted. Voltage with no load connected across TB3-3 but the chlorine current and TB3-4 should be about 15 Vdc.

output is working 2. Replace pH CPU board.

No pH and chlorine 1. Verify that the output terminals are not shorted. Voltage with no load connected across the current outputs. chlorine output (TB3-1 and TB3-2) and the pH output (TB3-3 and TB3-4) should be about 15 Vdc

2. Call factory service for assistance.

Low chlorine and/or Check for excessive loading on the output circuit. Maximum load is 600 ohms. pH current

Analyzer does not Verify that automatic pH correction is on. compensate for pH changes.

Analyzer does not 1. Verify that automatic temperature correction is on. compensate for 2. Check response of chlorine sensor RTD (see Section 8.2.5) temperature changes.

TABLE 8-3. Troubleshooting Guide (continued)

Model 1054B CL SECTION 8.0

DIAGNOSTICS AND TROUBLESHOOTING

Chlorine reading erratic (cont’d)

Page 48

Model 1054B CL SECTION 9.0

RETURN OF MATERIALS

SECTION 9.0

RETURN OF MATERIALS

GENERAL. To expedite the repair and return of instru-

ments, proper communication between the customer and the factory is important. A return material authorization (RMA) number is required. Call (949) 757-8500 or (800) 854-8257. A Return of Materials Request form is provided for you to copy and use in case the situation arises. The accuracy and completeness of this form will affect the processing time.

WARRANTY REPAIR. To return product under warranty:

1. Contact the factory for authorization.

2. Complete a copy of the Return of Materials Request form as completely and accurately as possible.

3. To verify warranty, supply the factory sales order number or the original purchase order number. In the case of individual parts or sub-assemblies, the serial number on the mother unit must be supplied.

4. Carefully package the materials and enclose your Letter of Transmittal and the completed copy of the Return of Materials Request form. If possible, pack the materials in the same manner in which they were received.

IMPORTANT

Please see second section of Return of Materials Request Form . Compliance to the OSHA requirements is mandatory for the safety of all personnel. MSDS forms and a certification that the equipment has been disinfected or detoxified are required.

5. Send the package prepaid to: Rosemount Analytical Inc.

Uniloc Division 2400 Barranca Parkway Irvine, CA 92606

Attn: Factory Repair Mark the package: Returned for Repair RMA No. _______________

Model No. ______________

NON-WARRANTY REPAIR.

1. Contact the factory for authorization.

2. Fill out a copy of the Return of Materials Request form as completely and accurately as possible.

3. Include a purchase order number and make sure to include the name and telephone number of the individual to be contacted should additional information be needed.

4. Do Steps 4 and 5 of Warranty Repair section

NOTE

Consult the factory for additional information regarding service or repair.

Page 49

WARRANTY

Seller warrants that the firmware will execute the programming instructions provided by Seller, and that the Goods manufactured or Services provided by Seller will be free from defects in materials or workmanship under normal use and care until the expiration of the applicable warranty period. Goods are warranted for twelve (12) months from the date of initial installation or eighteen (18) months from the date of shipment by Seller, whichever period expires first. Consumables, such as glass electrodes,

membranes, liquid junctions, electrolyte, o-rings, catalytic beads, etc., and Services are warranted for a period of 90 days from the date of shipment or provision.

Products purchased by Seller from a third party for resale to Buyer ("Resale Products") shall carry only the warranty extended by the original manufacturer. Buyer agrees that Seller has no liability for Resale Products beyond making a reasonable commercial effort to arrange for procurement and shipping of the Resale Products.

If Buyer discovers any warranty defects and notifies Seller thereof in writing during the applicable warranty period, Seller shall, at its option, promptly correct any errors that are found by Seller in the firmware or Services, or repair or replace F.O.B. point of manufacture that portion of the Goods or firmware found by Seller to be defective, or refund the purchase price of the defective portion of the Goods/Services.

All replacements or repairs necessitated by inadequate maintenance, normal wear and usage, unsuitable power sources, unsuitable environmental conditions, accident, misuse, improper installation, modification, repair, storage or handling, or any other cause not the fault of Seller are not covered by this limited warranty, and shall be at Buyer's expense. Seller shall not be obligated to pay any costs or charges incurred by Buyer or any other party except as may be agreed upon in writing in advance by an authorized Seller representative. All costs of dismantling, reinstallation and freight and the time and expenses of Seller's personnel for site travel and diagnosis under this warranty clause shall be borne by Buyer unless accepted in writing by Seller.

Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the original warranty period or ninety (90) days, whichever is longer. This limited warranty is the only warranty made by Seller and can be amended only in a writing signed by an authorized representative of Seller. Except as otherwise expressly provided in the Agreement, THERE ARE NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, AS TO MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO ANY OF THE GOODS OR SERVICES.

RETURN OF MATERIAL

Material returned for repair, whether in or out of warranty, should be shipped prepaid to:

Emerson Process Management

Liquid Division

2400 Barranca Parkway

Irvine, CA 92606

The shipping container should be marked:

Return for Repair Model

_______________________________

The returned material should be accompanied by a letter of transmittal which should include the following information (make a copy of the "Return of Materials Request" found on the last page of the Manual and provide the following thereon):

1. Location type of service, and length of time of service of the device.

2. Description of the faulty operation of the device and the circumstances of the failure.

3. Name and telephone number of the person to contact if there are questions about the returned material.

4. Statement as to whether warranty or non-warranty service is requested.

5. Complete shipping instructions for return of the material. Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional charges

for inspection and testing to determine the problem with the device.

If the material is returned for out-of-warranty repairs, a purchase order for repairs should be enclosed.

Page 50

Credit Cards for U.S. Purchases Only.

The right people, the right answers, right now.

ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE

http://www.raihome.com

Emerson Process Management Liquid Division

2400 Barranca Parkway Irvine, CA 92606 USA Tel: (949) 757-8500 Fax: (949) 474-7250

http://www.raihome.com

Rosemount 1054B-CL Free Residual Chlorine Microprocessor Analyzer Manuals & Guides

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