GF Signet 4632 User Manual

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Signet 4630 Free Chlorine Analyzer System Signet 4632 Chlorine Dioxide Analyzer System

*3-463X.090*

3-4630.090 Rev L 09/13

The Signet 4630 and 4632 Systems are EPA 334.0 Compliant.

Description

The Signet Chlorine Analyzer Systems are integrated, all-in-one chlorine panel systems

Signet

Chlorine Analyzer

designed to measure Free Chlorine or Chlorine Dioxide in drinking water and clean, fresh water treatment applications. This manual includes the 4630 Free Chlorine and 4632 Chlorine Dioxide Analyzer Systems.

Features:

• EPA 334.0 Compliant: The 4630 Free Chlorine and 4632 Chlorine Dioxide systems can be used for reporting chlorine residuals in accordance with EPA Method 334.0.

• Complete chlorine analyzer system allows quick setup and easy installation. Connect to a water source and plug it in.

• Unique integrated clear  ow cell combines sensors,  ow regulator,  lter and variable area  ow indicator in one compact unit.

• Built-in variable area  ow indicator facilitates  ow rate con rmation at a glance.

• Integrated  ow regulator with removable  lter accepts inlet pressures of 1 to 8 bar (15 to 120 psi) while maintaining constant  ow and minimal pressure to the sensors.

• Water  ows vertically into sensor tip, eliminating bubble entrapment. Raised exit in  ow cell sensor chamber ensures sensors stay submerged even when system and  ow is turned off.

• Flow cell accommodates two sensors; one chlorine and an optional pH sensor.

• Automatic pH and temperature compensation or manual pH value input capability for accurate free chlorine readings.

• Easy viewing of the transmitter via the bright backlit LCD display.

• Moisture-proof NEMA 4X wiring enclosure.

English

Operating Instructions

Additional information can be found in the individual product manuals, refer to www.gfsignet.com. Click on Product Manuals under the Signet Quick Links section.

• 3-8630-3P Chlorine Transmitter Manual (3-8630.090-3)

• 3-2630 Series Amperometric Chlorine Electrode Manual (3-2630.090)

• 3-2650 Amperometric Electronics Manual (3-2650.090)

• 3-2724 pH/ORP Electrode Manual (3-2724.090)

• 3-2750 pH Electronics Manual (3-2750.090)

Safety

CAUTION!

1. Follow instructions carefully to avoid personal injury.

2. Do not exceed the maximum pressure or temperature speci cations.

3. Mounting the Chlorine System in an outdoor box, in areas with elevated temperatures,

may cause damage to the system if the enclosure's internal temperature exceeds the temperature speci cation of the Chlorine Analyzer.

4. Do not alter product construction.

5. For use with clean fresh water only.

6. Disconnect AC power before opening wiring enclosure.

7. This panel system uses AC voltages. Wiring should be done by quali ed personnel only.

Table of Contents

Warranty Information Table of Contents

Refer to your local Georg Fischer Sales of ce for the most current warranty statement.

All warranty and non-warranty repairs being returned must include a fully completed Service Form and goods must be returned to your local GF Sales of ce or distributor. Product returned without a Service Form may not be warranty replaced or repaired.

Signet products with limited shelf-life (e.g. pH, ORP, chlorine electrodes, calibration solutions; e.g. pH buffers, turbidity standards or other solutions) are warranted out of box but not warranted against any damage, due to process or application failures (e.g. high temperature, or mishandling (e.g. broken glass,

chemical poisoning, dry-out)

damaged membrane,

freezing and/or extreme temperatures).

Product Registration

Thank you for purchasing the Signet line of Georg Fischer measurement products.

If you would like to register your product(s), you can now register online in one of the following ways:

• Visit our website www.gfsignet.com and click on Product Registration Form

• If this is a pdf manual (digital copy),

click here

• Scan the QR Code on the left

Safety Information

Warning / Caution / Danger

Indicates a potential hazard. Failure to follow all warnings may lead to equipment damage, injury, or death

Electrostatic Discharge (ESD) / Electrocution Danger

Alerts user to risk of potential damage to product by ESD, and/or risk of potential of injury or death via electrocution.

Personal Protective Equipment (PPE)

Always utilize the most appropriate PPE during installation and service of Signet products.

Pressurized System Warning

Sensor may be under pressure, take caution to vent system prior to installation or removal. Failure to do so may result in equipment damage and/or serious injury.

Hand Tighten Only

Overtightening may permanently damage product threads and lead to failure of the retaining nut.

Do Not Use Tools

Use of tool(s) may damage product beyond repair and potentially void product warranty.

Note / Technical Notes

Highlights additional information or detailed procedure.

Description ............................................................................... 1

Warranty Information ................................................................ 2

Product Registration ................................................................ 2

Safety Information .................................................................... 2

Chlorine System Dimensions ................................................... 3

Chlorine System Speci cations ............................................... 3

4630 Chlorine Analyzer System Inventory............................... 4

Quick Start ............................................................................... 4

Panel Assembly........................................................................ 5

Component Identi cation: Flow Cell ........................................ 6

Mounting .................................................................................. 7

Wiring Input .............................................................................. 8

Wiring Output ........................................................................... 9

Electrical Box Wiring Schematic ............................................ 10

Chlorine Sensor Preparation ..................................................11

Chlorine Sensor Calibration ....................................................11

Chlorine Sensor Maintenance ................................................11

Sensor Installation.................................................................. 12

Tubing Connections ............................................................... 13

Water Flow ............................................................................. 13

8630 Chlorine Transmitter...................................................... 14

View Mode .......................................................................... 14

Editing Procedure ............................................................... 15

Calibrate Menu ................................................................... 17

Options Menu ..................................................................... 20

Chlorine Sensor Conditioning ............................................ 22

pH Sensor Calibration ........................................................ 22

Chlorine Sensor Calibration ............................................... 24

Output Settings - Loops and Relays .................................. 25

2650-7 DryLoc® Amperometric and 2750-7 pH Electronics ... 28

Wiring to the Signet 8630 Chlorine Transmitter ................. 28

Chlorine Electrode Overview ................................................. 29

2630 and 2632 Amperometric Chlorine Electrodes ........... 29

Calibration .......................................................................... 30

Maintenance ....................................................................... 30

2724 DryLoc pH Electrode ..................................................... 31

Calibration .......................................................................... 32

Appendix ................................................................................ 33

Maintenance - 463X Chlorine Analyzer Flow Cell ............. 33

Maintenance - 2630 Free Cl / 2632 ClO

Electrode .......... 36

Maintenance - 2724 DryLoc pH Electrode ......................... 38

Troubleshooting - 463X Chlorine Analyzer ........................ 39

Troubleshooting - 8630 Chlorine Transmitter .................... 40

8630 Transmitter Error Messages...................................... 41

Troubleshooting - 2630 Free Cl / 2632 ClO

Electrode ..... 43

Troubleshooting - 2750-7 pH Electronics........................... 43

Speci cations ......................................................................... 44

Ordering Information .............................................................. 48

Do Not Freeze

Products are temperature sensitive and may contain

DO NOT FREEZE

freezable liquids. Freezing damage to pH, ORP, and Chlorine electrodes voids product warranty.

463X Chlorine System Manual

Speci cations and Dimensions

Chlorine System Dimensions Chlorine System Speci cations

79.3 mm (3.12 in.)

305 mm (12 in.)

165 mm

(6.5 in.)

578 mm (22.75 in.)

General

Compatible Signet Sensors:

• 3-2630-1 Free Chlorine Sensor 0-2 ppm

• 3-2630-2 Free Chlorine Sensor 0-5 ppm

• 3-2630-3 Free Chlorine Sensor 0-20 ppm

• 3-2632-1 Chlorine Dioxide Electrode 0-2 ppm

• 3-2724-00 Flat pH Electrode

Materials:

Panel: .......................................Black acrylic

Flow Cell: ..................................Acrylic

Wiring Enclosure: .....................Polycarbonate

Wetted Materials:

Flow cell, spacer rings: ............. Acrylic

Flow regulator housing ............. Polycarbonate

Strainer, e-clip, regulator spring,

 oat: ........................................ Stainless steel

Valves, vent: .............................Polypropylene

Flow cell O-rings, diaphragm: ...EPDM, FKM

Chlorine electrode ....................PVC, PVDF or PTFE, FPM

pH electrode .............................

PPS, Glass, UHMW, PE, FPM Sealing tape (valves, plug, vent) .. PTFE

Plug ..........................................Polyethylene

Performance

System Inlet Pressure Rating: .. 1 to 8 bar (15 to 120 psi)

Pressure Regulator:..................< 0.69 bar (10 psi) variation

over all ranges of  ow and

pressure

Flow tolerance .......................... ±15% or rated speci cation

above

Flow rate limits ............................. 8 to 12 gph (US)

(30.24 to 45.36 LPH)

(3 in.)

76 mm

254 mm (10 in.)

Hand Holds

25 mm

330 mm (13 in.)

171 mm (6.75 in.)

Material Safety Data Sheets (MSDS) are available online at www.gfsignet.com.

(1.0 in.)

Ø 7 mm (0.27 in.)

Ø 13 mm (0.52 in.)

Electrical

AC Input (standard): .................

DC Input (optional): ....................

100 to 240 VAC nominal

50 to 60 Hz, 0.17 A at 100 VAC

12 to 24 VDC ±10% regulated,

10 W, 250 mA max

Environmental Requirements

Storage Temperature: ...............

Operating Temperature: ............

Relative Humidity:.....................0 to 95%

Maximum Altitude: .................... 6562 ft (2000 m)

Shipping Weight: ......................22 lbs (10 kg)

Enclosure:.................................NEMA 4X (with output wire

0 °C to 65 °C (32 °F to 149 °F)

0 °C to 45 °C (32 °F to 113 °F)

glands sealed)

Standards and Approvals

• CE, UL, CUL, WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality, ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and, (2) This device must accept any interference received, including interference that may cause undesired operation.

3463X Chlorine System Manual

System Inventory

4630 Chlorine Analyzer System Inventory

1. Chlorine panel assembly a. Built-in pressure regulator 15 to 120 psi. b. 3/8 inch hose barb connectors.

2. 1 each 2630 series Free Chlorine sensor or 2632 Chlorine Dioxide sensor; each with protective cap a. 1 spare membrane cap b. 2 bottles of electrolyte solution c. 1 syringe needle (taped to bottle) d. 1 syringe

3. 1 each Flat pH sensor 3-2724-00 (159 001 545) (3-4630-11, -21, -31 and 3-4632-11 models only)

4. Manual package a. English panel assembly manual b. CD with multi-language manuals c. Wall mounting hardware d. Drill template

5. 1 each North American Type B power cord

6. Customer supplied a. 3/8" hose input and drain b. Hose clamps

Quick Start

Follow the steps below to set up a new Chlorine Analyzer System. Refer to the individual component manuals for detailed information.

Step 1. Mount the panel on a vertical  at surface using appropriate hardware.

Do not turn on power at this time.

Step 2. Open the wiring enclosure and wire input power

(see page 8: Wiring Input, page 9: Wiring Output, and page 10: Electrcial Box Wiring Schematic).

Step 3. Wire any 4 to 20 mA and relay output. Step 4. Remove sensor access plugs from the  ow cell (Figure 1).

If the optional pH sensor is NOT used, do not remove the left-side plug from the  ow cell.

Step 5. Remove the protective cap from the chlorine electrode.

(Keep the electrode cap in a safe place for future use. It is recommended to use the cap to protect the sensor during the removal of the electrode for cleaning or maintenance of the  ow cell).

Step 6. Complete Sensor Preparation (see page 11) and install the chlorine sensor into the electronics

(see page 12: Sensor Installation). Install the chlorine electrode into the  ow cell. The chlorine sensor is installed in the right-side access port, optional pH sensor is installed in the left-side access port.

NOTE:

NOTE: If a Chlorine Dioxide sensor or a Free Chlorine sensor without optional pH sensor is used, pH value must be

Step 7. Repeat step 5 and 6 if the optional pH sensor is being used. Step 8. Install the in uent water source to the "Inlet Port" nipple assembly of the  ow

Step 9. Install 3/8-inch tubing and secure with a hose clamp on the "Drain" port and

Step 10. Verify the inlet and drain ball valves are in the open position and

Step 11. Turn on the in uent water source and check the system for leaks. Step 12. Apply power to the system and allow system to initialize. Calibrate per instructions

NOTE: As factory default, the 4630-X Chlorine Panel Assembly is set to measure Free Chlorine. If a 2632 Chlorine Dioxide

All new chlorine and pH sensors require calibration during the start up of a system and throughout the life of the sensor. A new chlorine sensor requires a conditioning period of up to 4 hours with power on and chlorinated water  owing past the sensor prior to calibration. See page 24: Chlorine Sensor Calibration, for chlorine calibration and set up procedure.

"hard-coded" into the system (See page 23: Manual pH compensation). If optional pH sensor is installed, see page 22 to complete pH Sensor Calibration.

Sensor access plugs

cell. Install 3/8-inch tubing and secure with a hose clamp. (Not included. See page 13: Tubing Connections)

direct the tube to a proper drain. (Not included)

the sample port is in the off position (See page 13: Tubing Connections).

(See page 24: Chlorine Sensor Calibration and page 22: pH Sensor Calibration).

sensor is to be used to convert to a Chlorine Dioxide Panel Assembly, refer to the 8630-3 OPTIONS Menu on page 20.

Figure 1

463X Chlorine System Manual

Panel Assembly

Wiring enclosure

Transmitter

3-8630-3P (159 001 673)

Power cable conduit

pH sensor

electronics

3-2750-7 (159 001 671)

pH electrode

3-2724-00 (159 001 545)

Flow range limits

Flow rate indicator

Vent

Cap

Output conduits

Amperometric chlorine

sensor electronics

3-2650-7 (159 001 670)

Chlorine electrode

3-2630-X (Free Chlorine)

3-2632-1 (Chlorine Dioxide)

Flow cell block

Flow regulator with strainer

Inlet port

Quick disconnect

2000-2525*

Quick disconnect plug

(3/8 inch hose)

2000-3825*

Drain port

(3/8 inch hose)

* Contact factory for quote

Flow cell O-rings

3/8" Ball valve

4300-5225*

3/8" Hose barb

2000-3804*

Sampling port

5463X Chlorine System Manual

Component Identi cation

Component Identi cation: Flow Cell

Spacer ring

Stainless steel  lter

Pressure regulator

Flow cell nut

Flat washer

Flow cell back block

Regulator Assembly (3-4630.391)

(159 001 689)

Pressure regulator outer O-ring (large)

Pressure regulator outer O-ring (small)

Flow cell O-rings (4 segments)

Flow cell front block

Flat washer*

Disc spring (2700-0003)*

Knurled thumb nut (1700-2512)*

Flow cell bolt (2490-0554)

*Not included with 3-4630.392 (159 001 690)

Flow Cell Rebuild Kit (3-4630.390)

(159 001 688)

3-4630.392

(159 001 690)

Included in kit 3-4630.390

Item Quantity

Flow cell nut 6

Flat washer

Disc spring (curved washer)

463X Chlorine System Manual

Flat washer 15

Disc spring 9

Knurled thumb nut 3

Flow cell bolt 6

Mounting

Do not mount in direct sunlight.

• Bright light can promote algae growth. Indoor mounting is recommended.

• If the system is mounted outdoors, an outdoor enclosure for the whole system must be used to protect the electronics and  ow cell from light, rodents, insects and dirt.

• Mount the panel according to local electrical, building, and/or plumbing codes and seismic requirements.

• Use four 6 mm (¼ in.) diameter screws or bolts of suf cient length to mount the panel to a sturdy vertical surface. A mounting template is provided.

• Allow clearance on the sides and bottom for service to the unit.

• Keep panel system electronics and enclosure away from dripping water.

• The panel must be mounted vertically in an upright position.

Mounting

7463X Chlorine System Manual

Wiring Input

Power Supply Terminal Identi cation

Terminal Name Description

V. ADJ Voltage

DC ON Operation

+V, –V DC output

L, N Input

100 to 240 VAC input Standard AC con guration

adjustment

indicator

terminals

Input for 100-240 VAC

Adjusts within ±10%; turning clockwise increases output voltage

Green LED is lit when output voltage is on

+V: Positive output terminal –V: Negative output terminal

Accepts a wide range of voltages and frequencies (100 to 240 VAC DC input)

Figure 2

Figure 3

WARNING

This panel system is wired for AC voltages that can injure or kill.

Wiring should be performed by quali ed personnel only. Disconnect AC power before opening wiring enclosure.

Follow all local and government recommendations and methods for installation of electrical connections to and between the system and other devices.

System Input Power

• The panel system is pre-wired with an auto switching power supply that is rated for 100 to 240 VAC 50/60 Hz input.

• Wire with NEC Class I, 300 volt, 105 C wire.

• A switch or circuit breaker rated at 15 amps AC shall be included in the building installation.

• Install the circuit breaker in close proximity to the equipment and within easy reach of the operator.

• Mark the circuit breaker as the disconnecting device for the equipment.

• Grounding: The protective ground terminal must be bonded to protective earth in the host equipment.

Part # 7300-0024 (159 001 693) shown. Actual power supply may differ from Figure 2.

100 to 240 VAC Input Wiring

• Open the electrical box by loosening the four corner screws of the front cover.

• Insert input power wiring into the pre-drilled access hole on the left side of the electrical box using appropriate conduit adapters to maintain the Type 4X rating. (Supplied conduit connectors may have to be removed.)

• Install the input power wires into the proper terminals on the power supply (Figure 2). Use only 12 to 26 AWG copper wiring.

• Recommended torque for the terminals is 7 lb-in.

NOTE: When using alternate power supply

7300-7524 (159 000 687):

• Use 10-24 AWG copper wiring, 105 C, torque 4.4 lb-in.

12 to 24 VDC Input Wiring Conversion

• If the power source supplied to the system will be 12 to 24 VDC instead of 100 to 240 VAC, disconnect the red and black output wires from the power supply (Figure 3) and connect your UL approved limited-energy DC power supply (Figure 4), using an insulated nylon parallel splice

–

connector such as T&B part number 2C-12 or equivalent.

• Insert input power wiring into the pre-drilled access hole on the left side of the electrical box using the appropriate conduit adapters to maintain the Type 4X rating. (Customer may have to remove the supplied conduit connectors.)

• A switch or circuit breaker rated at 5 amps DC shall be included in the building installation.

• Install the circuit breaker in close proximity to the equipment and within easy reach of the operator.

Figure 4

463X Chlorine System Manual

• Mark the circuit breaker as the disconnecting device for the equipment.

Wiring Output

Follow all local and government recommendations and methods for installation of electrical connections to and between the system and other devices.

Output Connections

• Use the wiring enclosure terminal block for output wire connections. Do not wire directly to the transmitter.

• Recommended torque for the terminals is 7 lb-in

• Do not run 4 to 20 mA loop cables in the same conduit as the power or other high voltage wiring.

• Remove one installed jumper wire (from both of its terminals) on the terminal block in the enclosure for each loop device connected. Replace the jumper if you later remove your loop device. If only one loop device is connected, remove just one jumper wire from its two terminals.

• The panel system uses an active loop output wired to the enclosure terminal block.

• If connecting to a PLC, use the PLC's passive input.

• The transmitter must have a jumper wire or loop device always connected to Loop 1.

Wiring Label Legend

Ground

Earth Ground. Attach 4 to 20 mA loop cable shield wire here to help eliminate possible noise.

Loop 1 4 to 20 mA Loop #1

Loop 2 4 to 20 mA Loop #2

Relay 1 Relay Output #1

Relay Normally Closed (contact) when de-energized

C Common

Relay Normally Open (no contact) when de-energized

Relay 2 Relay Output #2 (terminals same as Relay #1)

WARNING

This panel system is wired for AC voltages that can injure or kill.

Wiring should be performed by quali ed personnel only. Disconnect AC power before opening wiring enclosure.

Wiring a 4 to 20 mA loop device

Jumper wire removed

1 2 3 4 5 6 7 8 9 10 11 12

LOOP 1

–

LOOP 2

RELAY 1

RELAY 2

FLOW SW

PLC dual channel connection

–

NC C NO NC C NO A B

Red

Black

Red

Black

PLC Terminals

Channel 1

4 to 20 mA

Channel 2

4 to 20 mA

1 2 3 4 5 6 7 8 9 10 11 12

–

NC C NO NC C NO A B

LOOP 1

LOOP 2

RELAY 1

RELAY 2

to 4 to 20 mA

loop device

FLOW SW

9463X Chlorine System Manual

Electrical Box Wiring Schematic

3-8630-3P (159 001 673) Customer Wiring

Relay 2 (N.O.)

Relay 2 (COM)

Relay 2 (N.C.)

Relay 1 (N.O.)

Relay 1 (COM)

Relay 1 (N.C.)

Loop 2 -

Loop 2

System Power Loop 1 -

System Power Loop 1

AUX Power -

AUX Power

Transmitter

Terminals

Black

White

Black

Yellow

Black

Red

Terminal

Block

9 8 7 6 5 4 3 2 1

GND

– V

9 8 7 6 5 4 3 2 1

GND

COM RELAY 2

COM RELAY 1

– LOOP 2

+ LOOP 2

– LOOP 1

+ LOOP 1

EARTH GROUND

Ground

Digital (S

Ground

Digital (S

V+

Power Supply

24 VDC

White

Red

Black

White

Red

Black

Signet pH Sensor Electronics 3-2750-7 (159 001 671)

Signet Chlorine Sensor Electronics 3-2650-7 (159 001 670)

463X Chlorine System Manual

Chlorine Sensor Preparation

2630 Free Chlorine Electrode 2632 Chlorine Dioxide Electrode

• Chlorine sensors are shipped without internal electrolyte solution.

• Prior to installation and supplying power, Chlorine sensors must be  lled with the appropriate internal electrolyte solution.

• Verify the correct electrolyte solution is utilized with the corresponding sensor.

• Free Chlorine and Chlorine Dioxide sensor require different electrolyte solutions.

Avoid skin or eye contact with electrolyte solution. Wear rubber gloves and goggles.

* Material Safety Data Sheets (MSDS) are available online at www.gfsignet.com.

Initial Fill Procedure:

When adding electrolyte, be prepared for an accidental spill. Working near a sink is recommended.

1. Remove the protective bottle from the end of the electrode

2. Remove the membrane cap from the front of the sensor.

Note: When new sensors are shipped, the membrane cap is not tightened to the sensor

3. Fill supplied syringe with electrolyte solution.

Additional caution should be taken when handling Chlorine Dioxide electrolyte solution.

4. Place the electrode on a level surface.

5. Insert syringe needle fully into one of the eight electrode holes while injecting with

electrolyte solution. Slowly injecting the electrolyte solution into the sensor to avoid introducing air bubbles. The electrode holds approximately 14 milliliters of solution. Slowly  ll until solution begins to  ow out of holes. Do not allow the solution to run down the electrode and wet the electrical contacts in the DryLoc connector.

6. Slowly screw on the membrane cap  nger tight. Do not use tools. To avoid damage

and contamination, do not touch the white membrane surface on the membrane cap.

Sensor Preparation

CAUTION:

DO NOT touch the gold tip or the membrane of the sensor.

Chlorine Sensor Calibration

A new chlorine electrode or one that has had the membrane cap changed must be calibrated. See page 24, 8630 Transmitter information on calibration of the chlorine sensor. A diethyl-p-phenylenediamine (DPD) colorimeter test kit (not included) is required for sensor calibration. A sample is taken and analyzed with the DPD test kit, then this value is entered into the Signet 8630 transmitter.

• Calibrate after a membrane cap change (requires 4 hour stabilization time).

• Calibrate after the internal electrolyte is replaced (requires 2 hour stabilization time).

• Check calibration one day after sensor is placed in service.

• Check calibration weekly to monthly depending on process requirements.

Chlorine Sensor Maintenance

The sensor membrane and internal electrolyte solution must be replaced over the life of the electrode. To maintain accurate chlorine measurements, GF Signet recommends that the internal electrolyte be replaced every 3 to 6 months, or when Chlorine readings drift low and/or cannot maintain a calibration longer than 5 days. Actual interval between maintenance of the sensor will be dependent on the actual applications, chlorine level and contaminates in the water. See Appendix page 36; Maintenance and Storage.

Keep spare membrane caps available. Membrane caps carry no warranty.

NOTE: Inspect and change the membrane cap if damaged. See page 36, Maintenance, for cleaning procedure.

11463X Chlorine System Manual

Sensor Installation

• Remove sensor access plugs from the  ow cell (pg. 4, Figure 1).

Note: Chlorine Sensor Preparation must be completed prior to installation, see page 11.

• Holding the 3-2750-7 (159 001 671) or 3-2650-7 (159 001 670) electronics inverted, open the DryLoc turning the upper locking ring ¼-turn counter-clockwise.

• Insert the electrode facing up. Turn the locking ring ¼-turn clockwise to lock the electronics in place.

• The mechanism will “click” when it is locked.

• Install the complete assembly into the  ow cell and ensure the key on the electrode aligns with the key slot on the  ow cell.

Avoid skin or eye contact with electrolyte solution. Wear rubber gloves and goggles.

Material Safety Data Sheets (MSDS) are available online at www.gfsignet.com.

Do Not Use Lubricant or Sealing Tape on Threads. Do Not Overtighten. Do Not Use Tools. Do Not Drop or Strike the Membrane.

DryLoc® Connection to Sensor Electronics

connector by

3-2724-00 (159 001 545) pH electrode

Locking Ring

3-2750-7 (159 001 671) pH electronics

Lubricate O-rings with a non-petroleum based, viscous lubricant (grease) compatible with the system.

Signet 3-2630-X Signet 3-2632 Chlorine Electrode

3-2630-X FCL electrode

3-2632 ClO2 electrode

Locking Ring

LockLock

3-2650-7 (159 001 670) Amperometric Electronics

Signet 3-2724-00

(159 001 545)

Flat pH Electrode

Signet 3-2650-7 Electronics

Signet 3-2750-7

pH Electronics

463X Chlorine System Manual

Tubing Connections

Water Flow

Use suitable 9.5 mm (3/8 in) ID tubing that is rated for your inlet pressure. Use hose clamps.

Inlet Quick Release Connection

Press down gray plunger to release. Water  ow is automatically shut off when disconnected.

Valve position for start up and normal use.

Note: Turn off inlet valve  rst when stopping water  ow.

• The drain tube must be positioned lower than the in uent water source to allow proper  ow through the  ow cell. The  ow cell must drain by gravity, not system pressure.

• When testing, allow the sample to  ow for a few seconds before collection.

Inlet

Drain

(to atmosphere)

Sampling port

( ow off)

Water Flow

Flow Rate

The  ow rate is in the proper range when the  oat is between the Min. and Max. markers on the  ow cell. The  ow range limits are 30.24 to 45.36 L/h (8 to 12 gal/h).

For Low Flow applications ( ow less than 1 bar/15 psi), the Flow Regulator can be removed and the  ow adjusted using the Flow Cell ball valve. (NOTE: The inlet hose barb will also need to be changed. Contact factory for details.)

pH Cl

OUT

13463X Chlorine System Manual

8630 Chlorine Transmitter

The Signet 8630 ProcessPro® Chlorine Transmitter displays and transmits free chlorine or chlorine dioxide, along with pH information when connected to Signet Amperometric Chlorine Sensors and a Signet pH Sensor.

Features of the 8630 include:

• Displays Free Chlorine measurements from 0 to 20 ppm (parts per million) or Chlorine Dioxide measurements from 0 to 2 ppm.

• Speci es all compatible chlorine sensors.

• Automatic pH and temperature compensation or manual pH input to calculate accurate free chlorine measurements.

• Simple setup and easy customization with the 4-button keypad.

• Dual 4 to 20 mA outputs with two built-in SPDT mechanical relays.

• Easy viewing via the bright backlit LCD display.

CAUTION!

• Remove power to unit before wiring input or output connections.

• Follow instructions carefully to avoid personal injury or damage to the transmitter.

8630

Chlorine

8630 View Mode

• The View Menu is displayed during normal operation.

• To select a VIEW display, press the  or  keys. The selections will scroll in a continuous loop. There are four pages to view.

• Changing the VIEW display does not interrupt system operations.

• No key code is necessary to change display selection.

• Output settings cannot be edited from the VIEW menu.

• All menus time-out after 10 minutes and return to the previous operating display.

• When editing the CALIBRATE or OPTIONS menus, the transmitter will return to the default display after 10 minutes and then the VIEW menu in another 10 minutes if no activity occurs.

FCl: 2.67 ppm

7.10 pH 25.3 °C

The example View menus below return to the default display after 10 minutes.

Cl Raw: 103.8 nA

pH Raw: -5.9 mV

Loop 1 10.68 mA Loop 2 8.56 mA

Last CAL:

10-18-10

View chlorine, pH and temperature values from the sensor. FCl = free chlorine, ClO2 = chlorine dioxide.

Chlorine (nA) and pH raw (mV) signals from the sensors. For reference only.

View of current loop 1 and loop 2 output.

View of the last calibration date. Editable in the Calibrate Menu.

463X Chlorine System Manual

8630 Editing Procedure

The 8630-3 (159 001 662) has two menus the user can edit: CALIBRATE and OPTIONS.

• The CALIBRATE menu allows you to calibrate and initialize sensors, de ne current loops and set relay functions.

• The OPTIONS menu allows you to set sensor type, adjust and test current loops, test relays and more.

Step 1. Press and hold the ENTER key:

• 2 seconds to select the CALIBRATE menu.

• 5 seconds to select the OPTIONS menu.

Step 2. Enter the Key Code.

The Key Code is --- keys in sequence.

• After entering the Key Code, the display will show the  rst item in the selected menu.

Step 3. Scroll the menu in a loop with the  or  arrow keys.

Step 4. Press the  key to select the menu item to be edited.

• The  rst display element will begin  ashing.

Step 5. Press the  or  keys to edit the  ashing element.

• The  key advances the  ashing element.

Step 6. Press the ENTER key to save the new setting and return to Step 3.

Made an Error?

Press the  and  keys simultaneously while any element is  ashing. This will recall the last saved value of the item being edited and will return you to Step 3.

Press the  and  keys simultaneously after saving the last setting to return to View menu.

Finished Editing?

15463X Chlorine System Manual

8630 Editing Procedure

Example: Calibration

Access the CALIBRATE Menu:

ENTER

Press and hold the ENTER key for 2 seconds to access the CALIBRATE menu.

Enter the Key Code:

The CALIBRATE and OPTIONS menus require a password (KEY CODE). Pressing the , , ,  keys in sequence unlocks the display and the  rst menu item will appear. If no key is pressed for 5 minutes while the display is showing "Enter Key Code", it will return to the VIEW menu.

Scroll the Menu:

Press the  or  keys to scroll through the Menu. While in this mode, pressing the  and  keys simultaneously will return the display to the VIEW menu. If no key is pressed for 10 minutes, the display will return to the VIEW menu.

Step 1.

Step 2.

Step 3.

(Hold)

ENTER

CALIBRATE menu

CALIBRATE:---Enter Key Code

CALIBRATE:--Enter Key Code

CALIBRATE:-Enter Key Code

CALIBRATE:Enter Key Code

Cl Zero Calibration: >

Last Cal: 09-18-09 >

OPTIONS

Select the item to be edited:

In this example, "Last Cal" (last calibration date) is chosen to edit. Pressing the  key selects the menu item and enters the screen into edit mode.

Edit the  ashing element:

This is the edit mode. The  or  keys change the  ashing element. The  key advances the  ashing element in a continuous loop. In this example, the "Last Cal" date was changed from 09-18-09 to 10-18-09. All output functions remain active during editing. Only the  ashing element can be edited.

Press ENTER to save the new value.

ENTER

When you have set your desired value, pressing the ENTER key stores the value on the screen, making it immediately available to output functions and exits you back to Step 3.

Step 4

Step 5.

Step 6.

Last Cal:

09-18-09 >

Last Cal: 09-18-09

Last Cal: 19-18-09

Last Cal: 10-18-09

Last Cal: Saving

Last Cal: 10-18-09

Example

ENTER

463X Chlorine System Manual

8630 Calibrate Menu

The menus below are displayed here in the order seen when scrolling down through the Calibrate Menu.

NOTE:

For greater accuracy it is recommended that the initial calibration of the system should be in the following order:

1. Temperature

2. pH electrode (if optional pH sensor is installed. If manual pH sensor is selected enter the pH value into the option menu prior to calibrating the chlorine sensor)

3. Chlorine sensor.

• Although the Calibrate Menu can be navigated upwards or downwards, it is best to navigate downwards when editing Current

Loop and Relay settings as previous entries can in uence subsequent menus.

• Chlorine and pH calibration screens will be shown only when a valid sensor is detected.

(Hold)

ENTER

Press the  or  Arrow key to scroll through the menus.

Calibrate Menus

Factory settings shown

Chlorine Units: ppm >

Cl Zero Calibration: >

Cl In Process Calibration: >

Reset Cl to Factory Cal: >

Cl Temperature Calibration: >

NOTE: The next two pH calibration screens will be shown only when a valid pH sensor is detected.

pH Standard Calibration: >

pH Slope Calibration: >

This is the  rst screen. Choose units of measurement: ppm or mg/l.

When > is pressed, the “live” readings are shown. The nA value is displayed, but cannot be edited and is used for diagnostic and calibration purposes. When in Edit Mode, pressing Enter stores the displayed value as your zero reference.

Enter process chlorine value determined from a DPD test kit here.

This menu resets Cl readings, Zero Calibration and temperature back to Factory Calibration. WARNING! User entered Cl calibration settings will be lost.

Enter process temperature from a reference thermometer: °C or °F. Units are set up in the Options Menu.

Set pH standard value. This applies a linear offset to the pH measurement.

Applies a slope to the pH measurement. The slope and standard value must be at least 2 pH units apart.

Press the  key to enter Edit mode.

Description

Press the Enter key to save

ENTER

your settings.

Reset pH to Factory Cal: >

Loop 1 Source: Chlorine >

Loop 1 Rng: ppm

0.00 5.00 >

Loop 2 Source: pH >

Loop 2 Rng: pH

00.0 14.00 >

Reset pH standard, slope or back to Factory Calibration.

WARNING! User entered pH calibration settings will be lost.

Current Output Functions

Choose chlorine or pH for this 4 to 20 mA current loop.

Select the minimum and maximum values for the current loop output. Units are derived from Loop 1 Source. If the Source 1 is changed, be sure to re-edit this page.

Choose pH or chlorine for this 4 to 20 mA current loop.

Select the minimum and maximum values for the current loop output. Units are derived from Loop 2 Source. If Source 2 is changed, be sure to re-edit this page.

17463X Chlorine System Manual

8630 Calibrate Menu

8630 Calibrate Menu - continued

Verify all relay settings if the Relay Source is changed.

Relay Functions

Relay 1 Mode: Off >

If Low or High Mode was chosen:

Choose mode of operation: Off, Low, High, Window, or Pulse. If Off, all subsequent Relay 1 functions are inactive and not visible.

Relay 1 Source: Chlorine >

Relay 1 Setpnt:

0.00 ppm >

Relay 1 Hys:

0.20 ppm >

Relay 1 Delay:

0.0 secs >

If Window Mode was chosen:

Relay 1 Source: Chlorine >

Relay1 Rng: ppm

0.00 5.00 >

Relay 1 Hys:

0.20 ppm >

Relay 1 Delay:

0.0 secs >

Choose chlorine or pH for Relay 1.

In Low or Hi Mode, Relay 1 will be activated when the process reaches this value. Units of measure re ect Relay 1 Source.

Relay 1 will be deactivated at Relay 1 Setpoint ± this hysteresis setting depending on High or Low Setpoint selection.

Set the time delay for Relay 1 to activate after reaching the Setpoint. Range: 0 to 6400 seconds.

Choose chlorine or pH for Relay 1.

Enter the range where Relay 1 will activate above and below this setpoint.

Relay 1 will be deactivated at Range setpoints ± this hysteresis setting.

Set time delay for Relay 1 to activate after reaching the setpoints set in Relay 1 Range.

If Pulse Mode was chosen:

Relay 1 Source: Chlorine >

Relay1 Rng: ppm

0.00

5.00 >

Relay1 PlsRate: 120 pulses/min >

Relay 2 Mode: Off >

If Low or High Mode was chosen:

Choose Relay 2 mode of operation: Off, Low, High, Window, or Pulse. To disable this relay choose Off.

Relay 2 Source: pH >

Relay 2 Setpnt:

0.00 pH >

Relay 2 Hys:

0.20 pH >

Relay 2 Delay:

0.0 secs

Choose chlorine or pH for Relay 1.

Enter the range where Relay 1 will activate above and below this setpoint.

Set the maximum pulse rate. Range: 1 to 400 pulses/min.

Choose pH or chlorine for Relay 2. This menu screen and all subsequent Relay 2 screens below do not appear if Relay 2 Mode is set to Off.

In Low or High Mode, Relay 2 will be activated when the process reaches this value. Units of measure re ect Relay 2 Source.

Relay 2 will be deactivated at Relay 2 Setpoint ± this hysteresis setting depending on High or Low Setpoint selection.

Set the time delay for Relay 2 to activate after reaching the Setpoint. Range: 0 to 6400 seconds.

463X Chlorine System Manual

8630 Calibrate Menu - continued

If Window Mode was chosen:

8630 Calibrate Menu

Relay 2 Source: pH >

Relay 2 Rng: ppm

0.00 5.00 >

Relay 2 Hys:

0.20 ppm >

Relay 2 Delay:

0.0 secs >

If Pulse Mode was chosen:

Relay 2 Source: pH >

Relay2 Rng: pH

0.00 14.0 >

Relay2 PlsRate: 120 pulses/min >

Find New Sensor(s): >

Choose pH or chlorine for Relay 2.

Enter the range where Relay 2 will activate above and below this setpoint.

This relay will be deactivated at Relay 2 Range setpoints ± this hysteresis.

Set the time delay for Relay 2 to activate after reaching the setpoints set in the Relay 2 Range.

Choose pH or chlorine for Relay 2.

Enter the range where Relay 2 will activate above and below this setpoint.

Set the maximum pulse rate. Range: 1–400 pulses/min.

Required only when a new sensor is changed while the power is on. Choose Yes or No.

Last Cal 10-18-09 >

Edit the calibration date.

End of Calibrate Menu

19463X Chlorine System Manual

8630 Options Menu

The menus below are displayed here in the order seen when scrolling down through the Calibrate Menu.

Press the  or  Arrow key to scroll through the menus.

Options Display

(Factory settings shown)

Contrast: 3 >

Cl Sensor Type: Free Cl >

pH Input Sensor >

If Manual pH input was chosen:

Manual pH Value

7.000 pH

Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher.

Select the chlorine sensor: Free Cl or ClO2.

Choose Manual or Sensor. If Sensor is chosen, the pH value from the connected pH sensor will be used. Choose Manual to enter a pH value manually when no sensor is connected or if measuring chlorine dioxide.

Enter your pH value here if a pH sensor is not connected.

(Hold)

ENTER

Press the  key to enter Edit mode.

Description

OPTIONS menu

Press the Enter key to save

ENTER

your settings.

Temp Display: °C >

Averaging: Off >

Decimal: ***.** >

Loop 1 Adjust:

4.00 mA >

Loop 1 Adjust:

20.00 mA >

Loop2 Adjust:

4.00 mA >

Loop2 Adjust:

20.00 mA >

Test Loop 1: >

Test Loop 2: >

Choose units of °C or °F.

OFF gives the fastest response to input changes. LOW = 4.5 seconds, HIGH = 9 seconds of averaged response. Increase averaging to steady the display.

Select the decimal point for the display. Maximum of 2 decimal places.

Adjust the minimum current output for Loop 1. The display value represents the precise current output. Range: 3.80 mA to 5.00 mA.

Adjust maximum current output for Loop 1. Range: 19.00 mA to 21.00 mA.

Adjust the minimum current output for Loop 2. Range: 3.80 mA to 5.00 mA.

Adjust maximum current output for Loop 2. Range: 19.00 mA to 21.00 mA.

Press UP or DOWN keys to manually output any current value from 3.6 mA to 21.00 mA to test Loop 1 output.

Press UP or DOWN keys to manually output any current value from 3.6 mA to 21.00 mA to test Loop 2 output.

463X Chlorine System Manual

8630 Options Menu - continued

8630 Options Menu

Test Relay 1:

Test Relay 2: >

Read Sens Data: No >

If Yes was chosen:

Cl Sensor S/N: xxxxxxxxx

Cl Type & Range: 2630 xxx.x ppm

Zero Cal: ppm&nA xxx.xx xxxx.x

In Proc: ppm&nA xxx.xx xxxx.x

Temp at Cal: xxxx.x °C

pH at Cal: xxx.xx pH

Press UP or DOWN keys to manually toggle Relay 1 Off and On. The left LED on the front of the transmitter con rms operation.

Press UP or DOWN keys to manually toggle Relay 2 Off and On. The right LED on the front of the transmitter con rms operation.

If "YES" is selected the following (Read Only) screens will be shown. If "NO" then this menu ends the Options Menu.

View the sensor serial number.

Identify the chlorine sensor type connected and its ppm range.

View user entered Zero Calibration data in ppm and nA.

View user In-Process Calibration value when it was entered in the Calibrate Menu.

Temperature recorded during user In-Process Calibration.

pH value recorded during user In-Process Calibration.

Temp Offset: xxxx.x °C

Elapsed Time: xxxxx. hrs

Low & High: °C

-xxxx.x +xxxx.x

Temperature offset calculated from user entered temperature calibration from Calibrate Menu.

Total hours of operation.

Lowest and highest temperatures the Cl sensor has been subjected to during operation.

End of Options Menu

21463X Chlorine System Manual

pH Sensor Calibration

Chlorine Sensor Conditioning

A new chlorine sensor or one that has had the electrolyte or membrane replaced must be conditioned to generate stable and accurate readings. To condition a chlorine sensor, the sensor and sensor electronics must be installed and powered, and must also have chlorinated water  ow across the membrane.

Chlorine Sensor Conditioning

1. Turn on and adjust water  ow rate. Condition a new chlorine sensor for 4 hours. Conditioning time for a membrane cap replacement and/or electrolyte re ll is 2 hours.

2. Keep of ine any 4 to 20 mA devices or relay actuated output devices that connect to the transmitter.

NOTE: The membrane cap may have to be replaced when electrolyte is changed. Replace membrane if damaged. The electrolyte should be replaced every 3 to 6 months.

pH Sensor Calibration

If a pH sensor is part of the system, use the Calibration Kit 3-2700.395 (159 001 605) prior to initially installing the sensor and during its normal lifetime. If a pH sensor is not available but pH determination is necessary, measure process pH with a separate test and enter the value in the Options Menu.

NOTE: Temperature must be calibrated before calibrating the pH sensor. See Chlorine Sensor section.

Refer to your pH sensor manual.

The pH sensor needs to be calibrated against two different pH buffer references to calibrate the offset (standard) and slope. Electrode offset is any deviation from 0 mV in a pH 7 buffer at 25 °C. Slope is the ratio of mV to pH units.

• Always keep any output devices of ine when calibrating.

Set pH Offset (Standard)

The transmitter must be powered on and the pH sensor must be connected.

1. Turn off the water  ow through the system, then remove the pH sensor from its  ow cell.

2. Using pH buffer 7.0, place enough pH buffers into clean calibration cups, supplied with the pH calibration kit 3-2700.395 (159 001 605), to cover the tip of the electrode.

3. Pour distilled water in another clean cup for rinsing the electrode between buffers.

4. Rinse probe, place the pH sensor in the pH 7.0 buffer and allow the mV reading to stabilize.

Example: Set pH Standard to 7.00.

5. Go to the Calibrate Menu.

6. Scroll down  5 menus to the pH Standard menu.

7. Press  to enter Edit Mode.

8. Enter the pH value of the buffer that the electrode is

placed in; 7.00 in this case.

9. Press the Enter button to save the setting.

10. Exit to the View Menu. 

EXAMPLE

Step 4

FCl: 2.67 ppm

View Menu

7.11 pH 25.3°C

(Hold)

ENTER

pH buffer value entered here

NOTE: The pH sensor will not calibrate when the mV value exceeds 50 mV from the original new electrode speci cation. Electrode: pH 4.01 = + 177 mV.

pH Standard Calibration: >

pH Standard Cal:

07.00 pH/ 0 mV

ENTER

Calibrate Menu

463X Chlorine System Manual

Set pH Slope

1. Remove the pH sensor from the  rst buffer solution and rinse it in distilled water.

2. Place the pH sensor in a different buffer solution (example: pH 4.01). The pH standard and slope must be at least 2 pH units apart.

3. Note the pH and mV readings on the View Menu and allow it to stabilize.

Example: Set pH slope to 4.01.

EXAMPLE

4. Scroll down  1 menu to the pH Slope menu.

5. Press  to enter Edit Mode.

6. Enter the pH value of the buffer that the electrode is placed in; 4.01 in this case.

7. Press the Enter button to save the settings.

8. Exit to the View Menu. 

9. Replace the pH sensor back into its  ow cell.

10. Turn on the water  ow. The pH sensor calibration is complete.

EXAMPLE

pH buffer value entered here

pH Sensor Calibration

pH Standard Cal:

07.00 pH/ 0 mV

pH Slope Calibration:

pH Slope Cal:

04.01 pH/ +177 mV

ENTER

View Menu

Calibrate Menu

Set Manual pH Compensation

If the pH of the application is stable, then the pH of the application can be entered manually and will be used to calculate the free chlorine measurements.

NOTE: Chlorine dioxide does not require pH compensation.

Example: Change the pH input from Sensor to Manual and enter a pH value of 7.22.

1. Go to the Options Menu.

2. Scroll down  2 menus to the pH Input menu.

3. Press  to enter Edit Mode.

4. Choose Manual and press Enter.

5. Scroll down  1 menu to the Manual pH Value menu.

6. Press  to enter Edit Mode.

7. Enter your new process pH value: 7.22.

8. Press the Enter button to save the setting.

9. Exit to the View Menu.

EXAMPLE

pH Input Sensor >

pH Input

Sensor Manual

ENTER

pH Input

Manual

Manual pH Value

7.220 pH

ENTER

Options MenuStep 2

Manual chosen

New pH value entered

23463X Chlorine System Manual

Chlorine Sensor Calibration

Chlorine sensors need to be calibrated for accuracy. After the 4 hour conditioning period, Temperature Calibration, Zero Point Calibration and In-Process Calibration needs to be performed. Any 4 to 20 mA or relay output devices should be of ine.

Chlorine Sensor Temperature Calibration

The temperature element inside the chlorine sensor needs to be calibrated. Use a reference thermometer to verify the actual temperature of the sample. This value is then entered in Step 4 to calibrate the system.

Tip: Remove the pH electrode from the  ow cell and insert the reference thermometer. If no pH sensor is being used, remove the cell plug to insert the thermometer. Replace the plug after calibration.

Example: Set the calibrated temperature to 25.3 ºC.

1. Go to the Calibrate Menu.

2. Scroll down  3 menus to the Cl Temperature menu.

3. Press  to enter Edit Mode.

4. Enter the temperature reading. Example: 25.3.

5. Press the Enter button to save the setting.

6. Exit to the View Menu.

Zero Point Calibration

The chlorine sensor needs to be calibrated against two chlorine references: zero chlorine and the process chlorine. Typically the zero point calibration is very stable. Calibration must be done with every new sensor and any time a membrane cap is replaced.

1. Keep of ine any 4 to 20 mA devices or relay actuated output devices that connect to the transmitter.

2. Turn off the water  ow and remove the powered chlorine sensor with the electronics still attached.

3. Place the sensor tip in distilled water.

4. Wait until the reading stabilizes, then save the calibration. Stirring the sensor in water is not necessary, but allows the signal to stabilize faster.

Example: Set the Zero Point Calibration at 1.0 nA.

5. Go to the Calibrate Menu.

6. Scroll down  one menu to the Cl Zero menu.

7. Press  to enter Edit Mode. The live sensor readings in ppm and nA will be  ashing. These readings cannot be modi ed, but can only be saved as displayed.

8. Press the Enter button at the lowest reading to save the setting or press to escape without changes.

9. Exit to the View Menu.

10. After Zero Point Calibration is complete, replace the sensor back into the  ow cell and turn the water  ow back on.

11. Wait until the chlorine readings stabilize once again, then perform a chlorine In-Process Calibration.

EXAMPLE

Step 2

New temp. value

Cl Temperature Calibration: >

Cl Temp: Cal

+025.3 °C

ENTER

EXAMPLE

Step 6

The signal level during a Zero Point Calibration must be at least 1 nA lower than the In-Process Calibration point.

Cl Zero: Calibration

Zero Cal: ppm&nA

0.20 / 001.0

ENTER

Lowest value noted for Zero Cal.

Calibrate Menu

463X Chlorine System Manual

In-Process Calibration

A diethyl-p-phenylenediamine (DPD) colorimeter test kit (not included) is required for sensor calibration. A sample is taken and analyzed with the DPD test kit, then this value is entered into the Signet 8630 transmitter.

Chlorine Sensor Calibration

1. Take a water sample from the Sampling Port (after purging it) from a stabilized and running system.

2. Use this sample to measure the chlorine content with a colorimetric DPD test kit (not included). Refer to the DPD kit instructions on how to perform this test.

NOTE: For greater accuracy, it is recommended that the DPD test be repeated three times and the results averaged together.

3. Record the test results.

Example: Set the Chlorine In-Process to 2.67 ppm.

4. Go to the Calibrate Menu.

5. Scroll down  2 menus to the Cl In-Process menu.

6. Press  to enter Edit Mode.

7. Enter the chlorine reading determined from the DPD test into the edit screen: 2.67 ppm. The Cl ppm is editable and must be at least 0.2 ppm.

8. Press the Enter button to save the setting.

9. Exit to the View Menu.

Calibration is complete for the chlorine sensor.

EXAMPLE

Step 5

DPD Cl ppm value entered here.

The signal level during an In-Process Calibration must be at least 1 nA higher than the previous Zero Calibration point.

Cl In Process Calibration: >

In Proc: ppm&nA

2.67 / 103.8

ENTER

Calibrate Menu

Output Settings - Loops and Relays

Con gure the current loop and relay functions if applicable. NOTE: The current and relay outputs can be tested in the Options Menu.

Current Loop Settings

Current outputs are passive outputs that can be spanned in the forward and reverse direction. Example: 0 to 5 or 5 to 0.

Example: Set a current loop source as chlorine and the operational range to 0 to 5 ppm.

1. Go to the Calibrate Menu.

2. Scroll down  to the Loop 1 Source menu.

3. Press  to enter Edit Mode.

4. Choose either the chlorine or pH sensor as the source that will control this loop: Chlorine.

5. Press the Enter button to save the setting.

6. Scroll down  1 menu to the Loop 1 Rng menu.

7. Press  to enter Edit Mode.

8. Select the minimum and maximum process values for the current loop output: 0 to 5 ppm.

9. Press the Enter button to save the setting.

10. Exit to the View Menu.

EXAMPLE

NOTE:

When integrated into the 463X Chlorine Panel Assembly, the loop outputs are wired into Active outputs via the terminal strip found inside the 463X enclosure.

EXAMPLE

Step 2

Loop 1 Source: Chlorine >

Set and save

Loop 1 Rng: ppm

0.00 5.00 >

Set and save

Calibrate Menu

25463X Chlorine System Manual

1 4 mg/l

Output (pulses per minute)

Ending

Point

Input (mg/l)

Starting

Point

100

Pulse

Hysteresis

Time

Low Setpoint

Process

Relay energized

Relay de-energized

Hysteresis

Time

High Setpoint

Process

Time

High Limit

Hysteresis

Low Limit

Process

Window

Output Settings

Mechanical Relay Functions

The 8630 relays are selectable and con gurable and can be used as switches that respond when the process value moves above or below a user de ned setpoint. They can be used for Low Alarm, High Alarm or Proportional Pulse triggering related to the process value. Relay functions, hysteresis and time delay settings are set up in the CALIBRATE menu and can be tested in the OPTIONS menu.

Low Setpoint:

Relay is energized when the measured value is less than the setpoint.

High Setpoint:

Relay is activated when the measured value is higher than the setpoint.

Window:

Relay is off within the window of two setpoints minus the hysteresis. Relay is activated when the value is higher or lower than the high and low setpoint.

Pulse-frequency Operation:

The transmitter can output a pulse at the rate de ned by the settings in the CALIBRATE menu and the sensor input. The maximum pulse square wave output from the relays is 400 pulses per minute. Example usage would be to control solenoid operated dosing pumps.

Example: As the process value drops below the setpoint (4 mg/l) the output will start pulsing in relation to the process value, the maximum pulse endpoint and the programmed pulses/minute. The pulse rate will increase as the process value decreases and approaches the programmed endpoint. This functionality can be used to precisely control the process.

• The output will be 0 pulses/minute when the input value is greater than 4 mg/l.

• The output will be 35 pulses/minute when the input value is 3 mg/l.

• The output will be 100 pulses/minute when the input value is 1 or less.

The starting point, endpoint and maximum pulse rate are select able in the CALIBRATE menu.

463X Chlorine System Manual

Relay Settings

Relay energized

Relay de-energized

Output Settings

Example: Set a relay to energize at a low setpoint of

1.0 ppm with a time delay of 15 seconds and de-energize at 1.30 ppm.

• Once a setting is saved it immediately becomes

active.

1. Go to the Calibrate Menu.

2. Scroll down  to the Relay 1 Mode menu.

3. Press  to enter Edit Mode.

4. Scroll down  and choose Low.

5. Press Enter.

6. Scroll down  to the Relay 1 Source menu. The default

is Free Chlorine.

7. Scroll down  to the Relay 1 Setpnt menu.

8. Press  to enter Edit Mode.

9. Set the ppm value to trigger the relay: 1.00 ppm.

10. Press Enter.

11. Scroll down  to the Relay 1 Hys menu.

12. Press  to enter Edit Mode.

13. Set the hysteresis (dead zone) for this relay. This affects

the turn off only: 0.3 ppm.

14. Press Enter.

15. Scroll down  to the Relay 1 Delay menu.

16. Press  to enter Edit Mode.

17. Set the turn-on delay in seconds for the relay: 15 secs.

18. Press Enter.

19. Exit to View Mode.

EXAMPLE

1.30

1.00

Cl ppm

Low

Setpoint

EXAMPLE

Step 4

Relay 1 Mode: Low >

Relay 1 Source:

Chlorine >

Relay 1 Setpnt:

1.00 ppm >

Time

Time Delay

Calibrate Menu

Set and save

• Relay function can be tested in the Options Menu.

Relay 1 Hys:

0.30 ppm >

Set and save

Relay 1 Delay:

15.0 secs >

Set and save

27463X Chlorine System Manual

2650-7 and 2750-7 Electronics

2650-7 Amperometric and 2750-7 pH DryLoc® Electronics

• The Signet 2650-7 Amperometric Electronics provide the polarization voltage and signal conditioning required by the Signet 2630-X and 2632-X Sensors.

• The Signet 2750-7 pH Electronics conditions and ampli es the output from the Signet 2724-00 pH Electrode.

• Both units output a Digital (S3L) signal to the Signet 8630 Chlorine Transmitter.

CAUTION!

• Remove power before wiring.

• Follow instructions carefully to avoid personal injury or damage to the electronics.

Wiring to the Signet 8630 Chlorine Transmitter

The electronics are pre-wired from the factory to the transmitter. Refer to the following schematics when replacing the electronics.

White

Red

Black

Shield

Signal Ground

Digital (S

L) data

+5 VDC

18 17 16

Gnd

I/O

N/C

Signet 3-2750-7

(159 001 671)

White

Red

Black

Shield

Signal Ground

Digital (S

L) data

+5 VDC

15 14 13

Gnd

I/O

N/C

Chlorine

Signet 3-2650-7

(159 001 670)

8630

Chlorine

8630

Chlorine

• Refer to the wiring diagram above to connect the 2650 cable to the terminals on the 8630 Chlorine Transmitter.

• For calibration and con guration please refer to the 8630 Calibrate Menu discussions above.

463X Chlorine System Manual

Chlorine Electrodes

Chlorine Electrode Overview

These electrodes require the Signet 2650 Amperometric Electronics module to communicate with the Signet 8630-3P Chlorine Transmitter.

Electrode Range: The electrodes must match the type and range of chlorine concentration to be measured.

Flow Rate: The electrodes must have a stable and constant  ow of water past its membrane for accurate measurement.

When the sensor is installed in the Flow Cell Block 3-4630.392 (159 001 690), the  ow rate range is controlled by the internal  ow regulator and the  ow rate is reduced to 30.24 to 45.36 LPH (8 to 12 US gph).

Sensor Conditioning: A new chlorine electrode requires conditioning of up to 4 hours with the electrode powered on and chlorinated water  owing across the membrane to generate a stable reading. Subsequent start-ups can require an electrode conditioning of up to 2 hours.

The electrodes should not be used in water containing surfactants, oils, organic chlorine or stabilizers such as cyanuric acid.

The maximum allowable operating pressure must be less than 1 bar (15 psi). Higher pressures will damage the electrodes.

CAUTION!

1 Follow instructions carefully to avoid personal injury or damage to electrode.

2. Prior to installation or removal: a. Disconnect  ow through system. b. Drain below sensor level.

3. Con rm chemical compatibility before use.

4. Do not alter product construction.

2630 Amperometric Chlorine Electrodes

The Signet 3-2630 Amperometric Chlorine Electrodes are designed to measure free chlorine in ranges of 0 to 2 ppm, 0 to 5 ppm or 0 to 20 ppm.

Mfr. Part No. Code Chlorine Range Chlorine Type

3-2630-1 159 001 746 0 to 2 ppm (mg/L)

3-2630-2 159 001 662 0 to 5 ppm (mg/L) Free chlorine

3-2630-3 159 001 747 0 to 20 ppm (mg/L) Free chlorine

Free chlorine

Lubricate O-rings with a non-petroleum based, viscous lubricant (grease) compatible with the system.

2632 Amperometric Chlorine Dioxide Electrodes

The Signet 2632 Amperometric Chlorine Dioxide Electrode is designed to measure chlorine dioxide (ClO

The Signet 2632 Amperometric Chlorine Dioxide Electrode has an integrated temperature element for automatic temperature compensation.

Mfr. Part No. Code Chlorine Range Chlorine Type

3-2632-1 159 001 767 0 to 2 ppm (mg/L)

) in a range of 0 to 2 ppm.

Chlorine Dioxide

Lubricate O-rings with a non-petroleum based, viscous lubricant (grease) compatible with the system.

29463X Chlorine System Manual

Chlorine Electrodes

pH Compensation for Free Chlorine

Amperometric free chlorine sensors measure only hypochlorous acid. As noted in the text above and in Figure 1, the ratio of hypochlorous acid and hypochlorite is pH dependent. In many applications the process pH is relatively stable and no correction is needed. However, where the pH of the water changes signi cantly, accurate free chlorine measurement requires pH compensation. With the addition of a pH sensor, the Signet 8630 transmitter will automatically compensate the free chlorine reading for changes in pH.

Automatic pH Compensation and Free Chlorine

In many applications, the process pH does not signi cantly  uctuate and only a free chlorine sensor and instrument is necessary for accurate chlorine measurement. It is when the pH varies that free chlorine concentration can not accurately be determined without the use of automatic pH compensation.

The addition of the Signet 3-2724-00 (159 001 545) pH electrode along with its 3-2750-7 (159 001 671) preampli er to the system makes pH compensation extremely easy and automatic even with wide  uctuations or high pH.

See Figure 2 for pH variation recommendations.

Example:

If the pH nominal value is 7.5 and the pH variation is ± 0.2 then automatic pH compensation is recommended. If the pH nominal value is 7.0 and the pH variation is ± 0.2 then automatic pH compensation is not required.

100

% free chlorine

5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

HOCl OClˉ

pH at 25 °C

Figure 1

±0.3

±0.2

Calibration

• Calibrate after a membrane cap change (requires 4 hour stabilization time).

• Calibrate after the internal electrolyte is replaced (requires 2 hour stabilization time).

• Check calibration one day after sensor is placed in service.

• Check calibration weekly to monthly depending on process requirements.

Maintenance

Keep spare membrane caps available. Membrane caps carry no warranty.

pH variation

±0.1

6.5 7.0 7.5 8.0 8.5 9.0 Sample pH

Automatic pH compensation recommended

in ranges within shaded area

Figure 2

NOTE: Inspect and change the membrane cap if damaged. See page 36, Maintenance, for cleaning procedure.

463X Chlorine System Manual

2724 pH Electrode

2724 DryLoc pH Electrode

CAUTION!

1. Use appropriate eye, face, hand, body and/or respiratory protection when using chemicals or solvents.

2. Prior to installation or removal: a. Depressurize and vent system. b. Drain below sensor level.

3. Con rm chemical compatibility before use.

4. Do not alter product construction. Lubricate O-rings with a non-petroleum based, viscous lubricant

WARNING: 3-2724-00 (159 001 545) is the only recommended electrode to be used in the Chlorine Analyzer System.

Electrode Date Code

The electrode date code indicates the manufacturing date of the electrode. Electrodes should be put into service as soon as possible and should not remain in the box for more than two years. Over time, the storage solution (found in the "boot" covering the electrode tip) will evaporate or leak, allowing the delicate sensing tip and reference junction dry.

(grease) compatible with the system.

To rehydrate a dry electrode, soak it in pH 4 buffer for 24 to 48 hours. Electrodes more than 2 years old may still be functional, but will take longer to rehydrate. Restoration may not be effective for severely dehydrated electrodes.

First Digit = Month

N = January

M = February

L = March

K = April

J = May

H = June

G = July

F = August

E = September

D = October

C = November

B = December

Removing the electrode from In-line installations

The use of this product assumes that operators are trained and are familiar with this type of device. They should be knowledgeable of the potential risks associated with pressurized piping systems. Operators MUST follow all necessary safety procedures.

Example: K5 = manufactured in April 2010

Second Digit = Year

5 = 2010

6 = 2011

7 = 2012

8 = 2013

9 = 2014

0 = 2015

1 = 2016

2 = 2017

3 = 2018

4 = 2019

In-line removal Instructions:

1. Depressurize and vent the piping system.

2. Drain the system to below sensor level.

3. Wear safety goggles or face shield during removal. Use all appropriate eye, face, hand, body and/or respiratory protection when working with chemicals or solvents.

4. Place a Lockout tag on the pipe when the sensor is removed for maintenance to prevent accidental opening and exposure to potentially hazardous chemicals.

31463X Chlorine System Manual

2724 pH Electrode

Calibration

pH Calibration Procedure

1. Rinse the sensor off in the rinse water cup. Gently pat dry with a soft, dry cloth or tissue. Warning: Do not let the rinse

water drip into the buffer solution; this will dilute the solution and may change the buffer values.

2. Place the pH sensor in the  rst buffer solution (pH 7). Wait until the output from the sensor is stable on the instrument display.

3. Follow the instrument’s instructions regarding buffer recognition.

4. Rinse the sensor with water. Warning: Do not let the rinse water drip into the buffer solution; this will dilute the

solution and may change the buffer values.

5. Dry the sensor gently by patting it with a dry, clean cloth or tissue.

6. Place the sensor in a cup containing the second buffer solution (pH 4 or pH 10). The second solution used will depend on the typical pH value of the application.

• If the process value is below pH 7, then use a pH 4 buffer solution.

• pH 10 buffer solution is used when the typical process value is above 7 pH; however, pH 4 buffer is suf cient if pH 10 buffer is not available.

7. Wait until the output from the sensor is stable.

8. Follow the instructions in the instrument manual regarding buffer recognition.

9. Rinse the sensor with water. Warning: Do not let the rinse water drip into the buffer solution; this will dilute the

solution and may change the buffer values.

10. Dry the sensor gently by patting it with a dry, clean cloth or tissue.

11. If the calibration was successful, put the sensor back on-line. If it was not successful, clean the sensor and recalibrate. If the sensor cannot be calibrated, the electrode may need to be replaced.

Calibration Tips

1. The pH buffer solutions can be used for calibrating more than one sensor within a day. However, the solutions must remain free of debris and must not be diluted by rinse water from previous calibrations.

Note: Use fresh buffer solutions for best results.

2. Tap or deionized water may be used to rinse the electrodes between each buffer solution.

3. Calibration solutions change value with varying temperature. Allow both the sensor and buffers to equalize with the ambient temperature. Sensors will not calibrate properly if the sensor is not at ambient temperature. Take note of all temperature variations of the sensors and the calibration solutions.

4. Do not pour used buffer solutions back into the bottle; dilute with plenty of water and  ush them down the drain.

5. Store electrodes in pH 4 buffer when not in use.

6. Calibrate sensors on a regular basis.

7. If the pH sensor does not calibrate within acceptable limits, clean the electrode and calibrate again. If the sensor continues to calibrate outside of acceptable limits, the electrode is spent and must be discarded.

8. Acceptable pH ranges during calibration are as follows:

pH 7: High: 7.8 pH = -50 mV; Low: 6.2 pH = 50 mV pH 4: High: 4.8 pH = 227 mV; Low: 3.2 pH = 127 mV pH 10: High: 10.8 pH = -227 mV; Low: 9.2 pH = -127 mV

Electrochemical pH vs. mV Ratio

• The mV output from the electrode is created by the interaction of the

electrode and the  uid. The electrode contains a gel that depletes over time, so the instrument must be readjusted periodically to maintain system accuracy. The need for recalibration varies with each application, but the life of the electrode is usually consistent.

• Keep a maintenance log to establish a depletion trend in new systems.

• The mV calibration is a two-point procedure. Signet offers pH buffer

solutions prepared speci cally for this purpose.

• pH buffer solutions can be used for calibrating more than one sensor

within a day provided that the solutions are protected from debris and are not diluted by rinse water from the calibration procedure.

• Use clean water to rinse buffer solutions from the electrode.

• Dispose of all buffer solutions at the end of the day.

• If the pH sensor will not calibrate within acceptable limits, clean the

electrode and recalibrate. If the calibration results remain outside of acceptable limits, the sensor is depleted and must be discarded.

• Follow the guidelines of local waste disposal regulations when

discarding buffer solutions and spent electrodes.

Electrode slope is the ratio of mV to pH units. At 25 °C the theoretical slope is 59.16 mV per pH.

Theoretical mV Values @ 25 °C

pH mV

2 +295.8 mV

3 +236.64 mV

4 +177.48 mV

5 +118.32 mV

6 +59.16 mV

7 0 mV

8 -59.16 mV

9 -118.32 mV

10 -177.48 mV

11 -236.64 mV

12 -295.8 mV

463X Chlorine System Manual

Appendix

Maintenance - 463X Chlorine Analyzer Flow Cell

Sensor Removal

CAUTION: Over time, a sensor can get tight in the  ow cell  tting. When removing the sensor, avoid

hitting the sensor electronics on the bottom of the wiring enclosure if the sensor suddenly releases.

Take care not to damage the components.

While holding the  ow cell, grasp the yellow electronics as a whole unit and carefully pull upwards, gently rocking back and forth if necessary. Once the sensor is loose, disengage the electronics, then remove the sensor.

TIP: A tool can be used to carefully pry the sensor electronics up and out if it is dif cult to remove.

Under certain conditions, a dirty  ow cell and  lter can create a chlorine demand which could lower the chlorine concentration in the water  owing past the chlorine sensor. It is recommended to clean the  lter and  ow cell on a regular basis. The frequency of necessary cleaning will depend on the application in which the system is being used and the level of accuracy required.

Cleaning

Appendix

Figure 1

Service the  ow cell on a clean, dirt free surface to avoid scratches or damage to the  ow cell.

Step 1. Keep the system powered on. Step 2. Disable the relays and any output loops. Step 3. Turn off the water  ow. Step 4. Remove the sensors from the  ow cell. NOTE: It is not

necessary to remove the electronics from the sensor.

Step 5. Install the vinyl caps on to the sensor tips or place the tips of

the removed sensors in a cup of sample water for temporary

storage while cleaning the  ow cell. Keep the sensor tips wet and the sensors energized. Step 6. Remove the  ow cell from the panel by removing the

knurled nuts (Figure 1). Step 7. Remove the remaining hardware from the  ow cell.

(Figure 2).

NOTE: It is recommended that an anti-seizing compound appropriate for the application be used during the reassembling of the ﬂ ow cell.

• Wash the surfaces with plain or soapy water only.

• Use gentle, liquid dishwashing soap if necessary.

• DO NOT USE commercial glass cleaning  uids.

• Use a soft, lint-free cloth.

Servicing the Flow Regulator and Filter

WARNING: Do not disassemble the  ow regulator.

There are no user serviceable parts inside.

Figure 2

Remove  lter screen to clean. If the  lter is not

desired, it may

be removed from

the system.

If your inlet pressure is less than 1 bar (15 psi), remove the  ow regulator and quick disconnect inlet connector.

Flow Regulator

33463X Chlorine System Manual

Appendix

O-Ring Installation

CAUTION! The 3-4630.390 (159 001 688) O-ring kit

comes complete with two O-rings (5 and 6) and a single cord of material that must be cut and  tted into the O-ring groove of the  ow cell (1 and 4).

• The sealing of the  ow cell is accomplished by four cut O-ring segments and two round O-rings sealing the  ow regulator. Refer to the illustration below for special O-ring  tting instructions. Butt all O-ring joints together so there is no gap.

• Remove the O-rings during  ow cell disassembly. Both the O-rings and all sealing grooves should be examined for cleanliness.

• Wipe all surfaces carefully with a soft, lint-free cloth to ensure good sealing.

• The cross section of the O-rings should be round and smooth. If they are  attened, their ability to seal is reduced.

• Do not use liquid or paste sealant.

Do not scratch the sealing surfaces of the  ow cell block. Scratches to the sealing surfaces can cause irreparable leaks.

Fit all O-ring joints so there is no gap in  nal assembly.

Butt ends together

Individual O-rings shown. Butt all segment joints together in  nal assembly.

New O-ring

cross section

Old  attened O-ring

cross section

(Replace)

Fit  ush with no gap

Straight cut

Angle cut O-ring

Fit  ush with no gap

463X Chlorine System Manual

Straight cut

Angle cut O-ring

Fit  ush with no gap

Flow Cell Assembly

WARNING! Do not over tighten  ow cell bolts. Maximum torque is 8.1 Nm (72 Lb-In). Over tightening the bolts can damage the  ow cell. Do not over-tighten the bolts in an attempt to stop a leak.

Appendix

Install the assembled pressure

regulator and the two round O-rings into the  ow cell.

Install the four O-ring segments.

Insert the center bolt into the block.

Tighten bolts in 3 passes

Torque

8.1 Nm

(72 Lb-In)

MAX!

Install the nut and washers.

Tighten the nut just enough to hold

the block together and keep the

O-rings in place.

Install the remaining bolts, washers

and nuts.

Align and place the back block onto

the  ow cell. Check to be sure that the O-rings are seated correctly.

Tighten the bolts in three passes to

speci cation.

Install the  ow cell on the panel.

Screw on the thumb nuts  nger tight.

DO NOT use tools on the thumb nuts.

NOTE: It is recommended that an anti-seizing compound appropriate for

the application be used during the reassembling of the ﬂ ow cell.

35463X Chlorine System Manual

Appendix

Maintenance - 2630 Free Chlorine Electrode Maintenance - 2632 Chlorine Dioxide Electrode

It is required to calibrate the sensor after servicing the membrane and electrolyte. See Page 24.

Verifying the sensors accuracy using the DPD method should be performed to determine if the sensor requires maintenance.

1. Inspect the membrane for dirt or damage. Replace the membrane if its torn or if the gold cathode is visible.

If the membrane is dirty clean the membrane by soaking it in 1 - 5% HCL and gently washed with a stream of DI water. (do not use any mechanical device on the membrane)

Re ll Procedure:

When adding electrolyte, be prepared for an accidental spill. Working near a sink is recommended.

1. Remove the membrane cap from the front of the sensor.

2. Turn the sensor upside down and shake the sensor

vigorously to remove the internal electrolyte.

3. Fill supplied syringe with electrolyte solution. Additional caution should be taken when handling Chlorine Dioxide electrolyte solution.

4. Place the electrode on a level surface.

5. Insert syringe needle fully into one of the eight electrode

holes while injecting with electrolyte solution. Slowly injecting the electrolyte solution into the sensor to avoid introducing air bubbles. The electrode holds approximately 14 milliliters of solution. Slowly  ll until solution begins to  ow out of holes. Do not allow the solution to run down the electrode and wet the electrical contacts in the DryLoc connector.

6. Slowly screw on the membrane cap  nger tight. Do not use tools.

To avoid damage and contamination, do not touch the white membrane surface on the membrane cap.

Storage

If the sensor or panel assembly is to be removed from service for a period of time the sensor must be properly prepared for storage and may need to be recommissioned.

Storage Periods:

1 week or less:

• Close the drain valve, then close the inlet valve of the  ow cell, to maintain water inside the  ow cell to keep the membrane wet.

• If draining the  ow cell is required, remove the sensor from the cell and the 2650 electronics and store in the

shipping bottle with tap water added.

Diluted HCl can irritate the eyes and skin, use proper safety equipment. Do not use surface tension reducing chemicals, detergents or solvents on the membrane.

• If a fresh water rinse does not clean the membrane, it will need to be replaced.

• Keep spare membrane caps available. Membrane caps carry no warranty.

Avoid skin or eye contact with electrolyte solution. Wear rubber gloves and goggles.

* Material Safety Data Sheets (MSDS) are available online at www.gfsignet.com.

CAUTION:

DO NOT touch the gold tip or the membrane of the sensor.

Store electrode between -10 ºC to 60 ºC

at a relative humidity that

DO NOT FREEZE

(-4 ºF to 140 ºF) does not exceed 95%.

The primary concerns when storing the electrode is membrane dehydration and freezing in extremely cold environments.

Continue to Page 37 for additional storage periods

463X Chlorine System Manual

Storage Periods:

Appendix

Greater than 1 week, but less than 2 months:

• Remove the membrane cap and internal electrolyte solution.

• Rinse the sensor internal chamber with DI water or cold tap water; drain and allow to dry.

• Place the membrane cap back onto the sensor. INSTALL LOOSE, DO NOT COMPLETELY TIGHTEN THE CAP. WHEN STORED DRY, THE MEMBRANE CAP MUST BE STORED RELAXED AND UNSTRESSED.

• Store sensor DRY in the shipping bottle, DO NOT ADD WATER.

Recommissioning Procedure:

1. Fill the sensor with the electrolyte as outlined in Maintenance, Page 36, and install the membrane cap.

2. The sensor will have to be polarized in the  ow cell with  owing Chlorinated water before being used.

Note: This may take 30 to 120 minutes before calibration can be performed.

3. If the sensor does not recover after recommission, follow steps 1-10 outlined under

Storage periods greater than 2 months.

4. If the sensor still fails to work properly, continue with steps 11-17.

CAUTION! Bleach and Chlorine Dioxide solutions are very corrosive and may release dangerous gases if it comes in contact with acids.

•

Wear proper protective clothing (gloves and eye protection)

• Avoid contact with skin and eyes

• Observe all warnings on safety data sheets

• Avoid spilling bleach and possible contact with acids

Figure 1

Figure 2

Curved Surface

Storage periods greater than 2 months:

• If the sensor has been in storage for a long period of time, or used in a chlorine free environment, the sensor

may develop a low slope (output), which may cause the sensor to have a slow response time.

• In this case, the sensor must be reconditioned.

Required to recondition a sensor:

• DI Water

• Beaker (any size available)

• Polishing Sheets (Included in sensor maintenance kit)

• Free Chlorine: Chlorine Bleach (13% concentration)

• Chlorine Dioxide: Aqueous Chlorine Dioxide solution

Reconditioning Procedure:

1. Remove the sensor from the 2750-7 electronics.

2. Remove the membrane cap.

3. Place the sensor on a  rm  at surface with the gold

cathode pointing upward.

4. Apply a small amount of water to the Blue (Course)

polishing paper (dull side).

5. Polish the gold electrode by moving the paper in a

circular pattern for 30 seconds. DO NOT go back and forth in a single direction. See Figure 1.

6. Rinse the sensor tip with DI water.

7. Apply a small amount of DI water to the White

(Fine) polishing paper (dull side) and polish the gold electrode by moving the paper in a circular pattern for 30 seconds. DO NOT go back and forth in a single direction. See  gure 1.

8. Rinse the sensor tip with DI water.

9. Top off the sensor with electrolyte and inspect

membrane for dirt or damage. Replace if necessary.

10. Insert the sensor into the 2650 electronics and

apply power.

11. Fill beaker with a 12 mm (½ inch) of the appropriate solution.

12. Position or suspend the sensor 0.2 mm to 12 mm

(¼ in. to ½ in.) above the appropriate solution. See Figure 2. DO NOT SUBMERGE THE SENSOR.

13. Apply power to the system.

14. Monitor the nA of the sensor (press the down arrow

once on the 8630 transmitter). The nA reading should start to rise. Response time and nA reading will depend upon the temperature of the appropriate solution.

15. Once the sensor's nA reading reaches approximately

300-360 nA allow the sensor to remain in the beaker, suspended over the appropriate solution, for an additional 20 minutes.

• If sensor does not recover quickly, cover the

beaker to avoid air contamination.

•

Contact the factory for assistance (www.gfsignet.com).

16. After 20 minutes, remove the sensor and install it into

the  ow cell and restore  ow to the system.

17. Calibrate the sensor after the system has become stable.

37463X Chlorine System Manual

Appendix

Maintenance - 2724 DryLoc® pH Electrode

Electrode Care and Application

pH electrodes are similar to batteries; they age with time and usage. The following information will help maximize electrode life.

General Tips:

• To ensure uninterrupted operation of critical pH systems, replacement electrodes should be available.

• Store boxed electrodes  at or upright (electrode tip down) to maximize hydration of the glass surface.

• Keep the glass surface wet at all times.

• Soak the sensor tip in pH 4.0 buffer during system maintenance intervals.

• If the sensor dehydrates, soak the sensor tip in pH 4 buffer for 24 to 48 hours, then visually inspect the electrode for surface cracks, swelling, or discoloration.

• It may not be possible to restore severely dehydrated electrodes to normal operation.

• High temperatures, strong acids or caustics will increase electrochemical reactions and speed electrode aging.

• Coatings (e.g. grease) on the glass or junction surfaces cause extended response time and inaccurate measurement.

• Never store the electrode tip in deionized (DI) water. Use pH 4 buffer solution to keep the glass wet when out of the process.

• Never store the electrode at temperatures below 0 °C (32 °F) or allow it to dehydrate.

• Never scrape or sand the glass electrode surface.

• Treat glass electrode surfaces with care to prevent accidental breakage.

Cleaning

Problem Suggested Solution

Hard Coatings

Soft Coatings

Oily or Organic Coatings

After Cleaning

Use a dilute acid solution (HCl solution of 5% or less). If the electrode has been used in applications with a pH value higher than 7 pH, soak the electrode for 2 to 5 minutes.

Use a dilute alkaline solution (NaOH solution at 5% or less) if the electrode has been used in applications with pH values less than 7 pH, soak the electrode for 2 to 5 minutes.

Alternating immersion in acidic and alkaline solutions may be necessary for thorough cleaning.

Spray or vigorously stir the electrode with a mild detergent, such as dishwashing liquid. Chlorine bleach can also be used.

Spray or vigorously stir the electrode with a mild detergent or an appropriate solvent that will not attack the materials of construction (isopropyl alcohol or similar).

Always rinse the electrode with water after cleaning.

Soak the electrode in a pH 4 buffer (with KCl if available) for at least 10 minutes after cleaning.

463X Chlorine System Manual

Troubleshooting - 463X Chlorine Analyzer

The troubleshooting table below outlines possible causes and remedies related to the  ow cell panel system. Refer to the respective transmitter and sensor manuals for speci c component troubleshooting.

Problem Possible Cause Remedies

Inlet pressure below 1 bar (15 psi)

No water  ow

Low water  ow

Excessive  ow

Flow cell leaks

Leaks around sensor

Water leaks out of top vent hole

Algae growth in  ow cell

Excessive small bubbles in  ow cell accumulating on sensors

Transmitter does not turn on

Chlorine reading too high Breached membrane Replace membrane and  ll solution

Chlorine reading too low

Sensor output drifts

Damaged  ow regulator Replace  ow regulator

Clogged  lter

Clogged  lter Clean  lter

Insuf cient inlet pressure

Damaged  ow regulator Inspect or replace

Excessive pressure over 8 bar (120 psi) Ensure inlet pressure does not exceed 8 bar (120 psi)

Damaged  ow regulator Replace  ow regulator

Incorrect assembly Inspect, clean, and reassemble

Loose bolts Tighten bolts (8.1 Nm, 72 Lb-In Max)

Defective or missing O-rings Replace O-rings

Damaged sealing surfaces Replace  ow cell

Damaged sensor O-ring Inspect or replace O-ring

Damaged  ow cell Inspect  ow cell

Drain valve closed or plugged Inspect

Hose connections are backwards Connect water source correctly

Outlet drain not below  ow cell Route drain line below  ow cell and vented to atmosphere

Low chlorine concentration in water

Exposure to light

Water source contains bubbles

Water source is saturated with dissolved gasses

No power or external circuit breaker is switched off

Loose or incorrect wire connections Check connections

Open loop wiring or missing jumper wire on terminal 1 (Loop 1) on the wiring enclosure terminal block

Low  ow rate Check source pressure

Filter clogged Clean the  lter

Sensor conditioning not long enough

Variable  ow rate Check  ow rate

Clogged  lter Clean the  lter

Contaminated  ll solution Change electrolyte  ll solution

Check source pressure. Remove regulator if pressure is < 1 bar/15 psi

Clean  lter or remove pressure regulator if inlet pressure is below 1 bar (15 psi)

Increase inlet pressure to speci cation or remove  ow regulator

Locate  ow cell away from light

Check water source

Inspect power and wiring connections

Replace jumper wire to terminal 1 or connect a loop device if the jumper wire to terminal 1 is removed

Allow the sensor to condition for 4 hours (See 2630 or 2632 sensor manual for details)

Appendix

Chlorine Electrode Troubleshooting (see 2630-2 or 2632-1 electrode manual: 3-2630.090)

Transmitter Troubleshooting (see 8630-3 transmitter manual: 3-8630.090-3)

pH Electrode Troubleshooting (see 2724 electrode manual: 3-2724.090)

39463X Chlorine System Manual

Appendix

Troubleshooting - 8630 Chlorine Transmitter

Several factors can cause irregular or incorrect readings. The  rst thing to check is to verify that the transmitter and sensors have been installed correctly. The list below outlines possible causes and remedies.

Problem Possible Cause Remedies

Incorrect wiring.

Transmitter does not turn on.

Display screen is too dark or too dim.

LCD backlight, relays and sensors do not work.

Incorrect temperature reading.

Display or Current output is erratic.

Output is not zero when electrode is placed in non-chlorinated water.

4 to 20 mA output is incorrect.

No or low voltage supplied to transmitter. Blown fuse. Bad wire connections or splices.

Contrast set incorrectly or ambient temperature is too high.

No power supplied to terminals 1 and 2.

Faulty chlorine sensor. Bad sensor connection.

Electrical noise interfering with the measurement. Sensor malfunction.

Electrode not properly conditioned. Noise interfering with the measurement. Calibration incorrect.

4 to 20 mA is not scaled same as Loop device. Loop device is not scaled same as sensor.

Check wiring, power supply and wiring connections.

Adjust contrast in Options Menu.

Transmitter requires power to terminals 1, 2, 3 and 4.

Check connections or replace sensor.

Ensure system is properly grounded. See Sensor Troubleshooting.

Condition new sensor for 4 hours. Cap replacement or electrolyte re ll: 2 hours. Properly ground system. Replace sensor.

Re-span loop device to match sensor.

Chlorine Sensor Troubleshooting (see 2630 sensor manual)

Sensor conditioning time too short. Run for 4 hours before calibrating.

Membrane cap damaged or contaminated. Clean or replace cap.

Interference from water contaminants. See Speci cations data.

Low  ow rate. Check  ow.

Air bubbles on membrane.

pH outside working range (See Speci cations data).

Incorrect readings

Low or no electrolyte in sensor. Fill sensor with electrolyte.

Membrane cap loose. Inspect/tighten (do not use tools).

Only combined chlorine present when measuring free chlorine.

Sensor not making good contact with electronics.

Defective sensor. Replace.

No pH compensation being used.

Cl sensor not calibrated. Calibrate Cl sensor.

Install  ow cell vertically with upwards  ow.

Check pH.

Validate with DPD test.

Inspect and reconnect.

Manually enter pH value in Options or calibrate pH sensor.

463X Chlorine System Manual

8630 Transmitter Error Messages

The 8630 error warnings are self-explanatory. An error message can appear under the following circumstances:

Appendix

• User input value is out of range

• Poor electrical connection

• Sensor is not connected or detected

Error Messages Problem Possible Cause Remedies

Sens Data Error

CHK Cl PREAMP

CHK pH PREAMP

CHK Cl SENSOR

CHK pH SENSOR

Out Of Range CHECK SENSOR

Cl sensor data memory error.

Cl preamp is not detected.

pH preamp is not detected.

Cl sensor is not detected.

pH sensor is not detected.

pH calibration error. pH values are out of range.

• Temperature error

• Incorrect sensor type chosen in the Options Menu

• Two calibration points are too close together when calibrating pH or chlorine.

Check Cl sensor wiring and Cl sensor is not connected. Damaged sensor.

Cl preamp is not connected. Wrong wiring. Damaged preamp.

pH preamp is not connected. Wrong wiring. Damaged preamp.

Cl sensor not connected. Damaged sensor.

pH sensor is not connected. Damaged sensor.

connection.

Perform "Find New Sensor" or

recycle power afterward.

Check preamp and transmitter

wiring.

Perform "Find New Sensor" or

recycle power afterward.

Check preamp and transmitter

wiring.

Perform "Find New Sensor" or

recycle power afterward.

Check sensor connection.

Enter proper values during

calibration.

Standard Too Close To Slope!

Slope Too Close To Standard!

Signal Too Close To Other Cal Pt

Cl Value Must Be > = 0.2 ppm

Signal Too High Must Be =< 10 nA

pH Too High Must be =< 9

pH Too Low Must be >= 4

pH standard calibration point is too close to slope point.

pH slope calibration point is too close to standard point.

The signal level of Cl for In-process calibration is too close to the Zero Cal Point.

The Cl value entered during In-process calibration is too small.

The signal level during Zero calibration is too high. Signal must be equal or less than 10 nA.

pH value is too high.

pH value is too low.

Wrong data is entered. pH buffer solution used has value too close to standard point.

The Cl solution used for In-process calibration is too close to Zero Cal. These two points must be 1 nA apart.

Wrong data is entered. The value entered must be at least 0.2 ppm (mg/l).

The sensor is not stabilized. The solution used has too much chlorine.

During In-Process calibration the pH value is too high and must be less than or equal to 9.

During In-process calibration the pH value is too low and must be greater than or equal to 4.

Re-enter correct data.

Use proper buffer solution at

least 2 pH units apart from

slope buffer solution.

Re-enter correct data.

Use proper buffer solution at

least 2 pH units apart from

standard buffer solution.

Use proper solution at least

1 nA apart.

Re-enter correct value.

Wait for sensor stabilization.

Check solution to ensure that

the chlorine level is close to

zero ppm (mg/l).

Check pH.

41463X Chlorine System Manual

Appendix

Transmitter Error Messages - continued

FCl= – – – – – – CHK pH SENSOR

FCl= – – – – – – CHK pH PREAMP

FCl= WRONG SENSOR

NOTE: Whenever a new type of Cl Sensor is connected to the preamp, a power recycling is required. Another option is to perform a "Find New Sensor" under the Option Menu.

pH sensor is not detected.

pH preamp is not detected.

Wrong sensor is detected.

pH sensor is not connected. Wrong wiring. Damaged pH sensor.

pH preamp is not connected. Wrong wiring. Damaged preamp.

Different type of sensor is connected. Wrong sensor type is selected under Option Menu.

Check pH sensor connections or change pH input to Manual in Options Menu.

Check pH preamp wiring. Perform a "Find New Sensor" or recycle power afterward.

Use correct sensor type. Perform a "Find New Sensor" or recycle power afterward. Select correct sensor type under Option Menu.

463X Chlorine System Manual

Troubleshooting - 2630 Free Chlorine Electrode Troubleshooting - 2632 Chlorine Dioxide Electrode

Transmitter error messages related to calibration are detailed in the Signet 8630 Chlorine Transmitter operation manual.

Problem Possible Causes Remedies

Condition for 4 hours minimum prior to initial calibration

DPD value must be greater than 0.5 ppm to calibrate

Inspect visually. Tap to remove bubbles. Mount at an angle

Condition for 4 hours minimum prior to initial calibration

Check for chloramine with appropriate DPD test

Inspect and reconnect

Inspect visually. Tap to remove bubbles. Mount at an angle

Replace membrane. Condition sensor for at least 2 hours and recalibrate.

Inspect and reconnect

Check 3-2650 Electronics connection to electrode (see 3-2650 manual for instructions). Make sure connections are dry. Check instrument hookup

Sensor cannot be calibrated. Output is higher than DPD test (out of range).

Sensor cannot be calibrated. Output is lower than DPD test.

Sensor output very low

Unstable output from sensor

Sensor conditioning time too short

Interference from contaminants See Speci cations data

Membrane cap damaged Replace cap and recondition

DPD chemicals bad Use fresh reagents

pH outside of working range See Speci cations data

Sensor conditioning time too short

Chlorine content too low

Low  ow rate Check to make sure  ow rate is suf cient

Air bubbles on electrode membrane

Low or no electrolyte in electrode Fill electrode with electrolyte

Organic chlorination agents present in water See Speci cations data

Surfactants in water Remove surfactants and replace cap

Membrane cap coated Clean or replace membrane cap

Membrane cap loose Tighten or replace membrane cap

pH outside working range. See Speci cations data

Sensor conditioning time too short

Chlorine content too low Add chlorine to validate

Only bound chlorine present. No free chlorine

Electrode not making good contact with electronics

Air bubbles on electrode membrane

Membrane damaged

Electrode not making good contact with electronics

Non-sensor problem

Appendix

Troubleshooting - 2750-7 pH Electronics

Problem Possible Cause Remedies

After completing calibration procedure, the output values are inaccurate.

Transmitter Troubleshooting (see 8630-3 transmitter manual

pH Electrode Troubleshooting (see 2724 electrode manual: 3-2724.090)

Insuf cient time allowed for electrode stabilization during calibration.

: 3-8630.090-3)

Recalibrate, verify that test solutions are at room temperature and wait at least 30 seconds after placing electrode in solution.

43463X Chlorine System Manual

Speci cations

8630 Chlorine Transmitter

General

Compatibility:

• Sensors: 3-2630-1 Free Chlorine Sensor 0-2 ppm 3-2630-2 Free Chlorine Sensor 0-5 ppm 3-2630-3 Free Chlorine Sensor 0-20 ppm 3-2632-1 ClO2 Electrode, 0-2 ppm 3-2724-00 Flat pH Electrode, 0-14 pH

• Electronics: 3-2650-7 Amperometric Electronics 3-2750-7 pH Sensor Electronics

Materials:

• Case: PBT

• Panel gasket: Neoprene

• Window: Polyurethane-coated polycarbonate

• Keypad: Silicone rubber

• Display: Backlit alphanumeric 2 x 16 dot matrix Update rate: 1 second Contrast: User selected, 5 levels

• Keypad: Silicone rubber

Performance

System Operational Ranges/Limits:

• 3-2630-1: Free Cl: 0 to 2 ppm, pH: 5 to 9

• 3-2630-2: Free Cl: 0 to 5 ppm, pH: 5 to 9

• 3-2630-3: Free Cl: 0 to 20 ppm, pH: 5 to 9

• 3-2632-1: ClO2: 0 to 2 ppm, pH: 4 to 11

• 3-2724-00: pH: 0 to 14 Cl Temp. Range: 0 °C to 45 °C (32 °F to 113 °F)

Max. Cable Length:

• Digital (S3L): 30 m (100 ft) maximum

• 4 to 20 mA: 305 m (1000 ft) maximum

Electrical

Input Power: 12 to 24 VDC ±10% regulated,

250 mA max current

Sensor Power: 5 VDC ±1% @ 25 ºC, regulated

(provided by 8630)

Input Speci cations

• One Digital (S3L) input from Free Chlorine or Chlorine Dioxide sensor

• One Digital (S3L) input from pH sensor

Output Speci cations:

• Current Loop (2 loops provided)

• 4 to 20 mA, isolated, adjustable span, reversible with minimum and maximum endpoint adjustment.

• Ability to use chlorine or temperature as input

• Update Rate: 300 ms

• Max Loop impedance: 50  max. @ 12 V 325  max. @ 18 V 600  max. @ 24 V

Relay Outputs:

• 2 mechanical SPDT contacts with adjustable hysteresis and programmable High, Low, Off, Pulse or Window range.

• May be disabled if not used

• Max. voltage rating: 5 A @ 30 VDC 5 A @ 250 VAC, resistive load

• Time delay: Programmable from 0 to 6400 s

Environmental Requirements

• Operating Temperature: -25 °C to 120 °C (-13 °F to 248 °F) (transmitter only)

• Storage Temperature: -15 °C to 80 °C (5 °F to 176 °F)

• Relative Humidity: 0 to 95%, non-condensing

• Maximum Altitude: 2000 m (6562 ft)

• Enclosure: NEMA 4X

Standards and Approvals

• CE, UL, CUL, WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality,

ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and,

(2) This device must accept any interference received,

including interference that may cause undesired operation.

463X Chlorine System Manual

2650 DryLoc Amperometric Electronics 2750-7 pH Electronics

Speci cations

General

Compatibility:

• Sensors: All Signet Amperometric DryLoc Sensors

• Instruments: Signet 3-8630-3P Chlorine Transmitter

Mounting: DryLoc connection Materials: PBT Cable: 4.6 m (15 ft) 3 conductor shielded, 22 AWG

• Max. Length: 30 m (100 ft)

Performance

• Accuracy < 5 nA or 1% of reading, whichever is greater @ 25 °C over full input range

• Temperature: ± 1.0 °C (PT1000) over full operation range (when calibrated at ambient temperature)

• Update Rate: 500 ms

• Range: ± 450 nA

• Resolution: 0.1 nA

Electrical

Input Speci cations:

• Sensor: Raw signal

• Temperature: PT1000 RTD

Output Speci cations:

• Digital (S3L): Serial ASCII, TTL level 9600 bps

Power Supply Input:

• Digital (S3L): 5 to 6.5 V ± 10%, 3 mA max

Environmental

• Storage Temp.: -20 °C to 50 °C (-4 °F to 120 °F)

• Operating Temp.: 0 °C to 85 °C (32 °F to 185 °F)

(electronics only)

• Relative Humidity: 0 to 95%, non-condensing

(no electrode connected)

• Enclosure: NEMA 4X/IP65 with electrode installed

• Shipping Weight: 0.64 kg (1.41 lb)

Standards and Approvals

• CE, WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality,

ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and,

(2) This device must accept any interference received,

including interference that may cause undesired operation.

General

Compatibility:

• Electrode: Signet 2724-00 Flat pH electrode

• Instrument: Signet 8630-3P Chlorine Transmitter

Mounting: DryLoc connection Materials: PBT Cable: 4.6 m (15 ft) 3 conductor shielded, 22 AWG

Performance

• Accuracy: ± 0.03 pH @ 25 °C

• Resolution: 0.02 pH

• Response Time (includes electrode response): < 6 s for 95% of change

• Range: 0.00 to 14.00 pH

• Resolution: 0.02 pH

Electrical

Input Speci cations:

• Input Impedance: >1011 

• Temperature Drift: ±0.002 pH per ºC

• Input Resolution: 0.02 pH, 0.3 ºC

Output Speci cations:

• Digital (S

L): Serial ASCII, TTL level 9600 bps

Environmental

• Storage Temp.: -20 °C to 50 °C (-4 °F to 120 °F)

• Operating Temp. (Electronics Only):

0 °C to 85 °C (32 °F to 185 °F)

• Relative Humidity: 0 to 95%, non-condensing

• Enclosure: NEMA 4X/IP65 with electrode installed

• Shipping Weight: 0.64 kg (1.41 lb)

Standards and Approvals

• CE, WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality,

ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and,

(2) This device must accept any interference received,

including interference that may cause undesired operation.

45463X Chlorine System Manual

Speci cations

2630-X Amperometric Free Chlorine Electrode 2632 Amperometric Chlorine Dioxide Electrode

General

Compatibility:

• Flow Cells: Signet 3-3610-1 Signet 3-3610-2 Signet 3-4630.392

• Electronics: Signet 2650 Amperometric Electronics

Mounting: Signet DryLoc connection

Materials:

• Housing CPVC

• Membrane: Free Chlorine: PVDF (prior to Nov 1, 2012)

PTFE (after Nov 1, 2012)

Chlorine Dioxide: PTFE

• O-ring: FPM

• Electrode: Gold (working) Silver halide (counter-reference)

Wetted Materials: PVC, PVDF, FPM, Nylon, Silicone

Performance

Electrode:

• Repeatability: ± 0.08 ppm (mg/l) or 3% of selected range whichever is less

• Slope:

Free Chlorine: 10 to 60 nA/ppm (mg/l) @ 25 ºC Chlorine Dioxide: 40 to 200 nA/ppm (mg/l) @ 17 ºC

• Response time, T90: < 2 minutes

Sensor Conditioning:

• 4 hours max. before calibration (new/ rst time start)

• 2 hours max. (subsequent start-ups)

Operational Ranges and Limits

• Free Chlorine: 3-2630-1: 0 to 2 ppm (mg/L) 3-2630-2: 0 to 5 ppm (mg/L) 3-2630-3: 0 to 20 ppm (mg/L)

• Free Chlorine pH: 5.0 to 9.0 pH

• Chlorine Dioxide: 3-2632-1: 0 to 2 ppm (mg/L)

• Chlorine Dioxide pH: 4.0 to 11.0 pH

Temperature: 0 °C to 45 °C (32 °F to 113 °F)

Maximum Pressure:

• Membrane: 0.48 bar @ 25 °C (7 psi @ 77 °F)

Flow Velocity Across Membrane Surface:

• Minimum: 15 cm/s (0.49 ft/s)

• Maximum: 30 cm/s (0.98 ft/s)

Cross Sensitivity:

• Free Chlorine: ClO2, ozone, bromine

• Chlorine Dioxide: FCl, ozone

Chemical Compatibility: < 50% ethanol/water < 50% glycerol/water

Environmental

Temperature

• Operating: 0 ºC to 45 ºC (32 ºF to 113 ºF)

• Storage (dry): -10 ºC to 60 ºC (-4 ºF to 140 ºF)

Rel. Humidity: 0 to 95% indoor/outdoor non-condensing

to rated ambient

Shipping Weight: 0.14 kg (0.30 lb)

System: (including electronics and instrument)

• Accuracy: < ±3% of electrode signal after calibration

• Resolution:  0.5% of electrode range Temp. Element: PT1000, Class B with measurement range

of -50 ºC to 150 ºC (-58 ºF to 302 ºF) (measurement only, not operating speci cation)

463X Chlorine System Manual

Standards and Approvals

• CE, WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality,

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and,

(2) This device must accept any interference received,

including interference that may cause undesired operation.

2724 DryLoc pH Electrode

General

Compatibility: Signet 2750 pH/ORP Sensor electronics

Process Connection: ¾ in. NPT or ISO 7/1 R¾ threads

or Signet  ow  ttings

Wetted Materials: PPS, glass, UHMW PE, FPM

Performance

• Ef ciency: >97% @ 25 °C (77 °F)

• Range: 0 to 14 pH

Ef ciency indicates the "wellness" of a new electrode. Ef ciency is measured by comparing the actual slope (mV/pH) at 25 °C to the theoretical output of 59.16 mV/pH. An ef ciency of 97% to 100% is equivalent to a slope of 57.39 to 59.16 mV/pH.

Speci cations

Environmental

Pressure

• Operating:

-10 ºC to 65 °C (14 °F to 149 °F),0 to 6.9 bar (0 to 100 psi)

65 °C to 85 °C (149 °F to 185 °F),

Linearity derated 6.9 to 4.0 bar (100 to 58 psi)

Temperature

• Storage: 0 °C to 50 °C (32 °F to 120 °F). CAUTION: The electrode glass will be shattered if shipped or stored at temperatures below 0 °C (32 °F). The performance life of the electrode will be shortened if stored at temperatures above 50 °C (120 °F).

• Operating: -10 ºC to 85 ºC (14 ºF to 185 ºF)

Rel. Humidity: 0 to 95% indoor/outdoor non-condensing to

rated ambient

Shipping Weight: 0.25 kg (0.55 lb)

Standards and Approvals

• WEEE

• RoHS Compliant

• Manufactured under ISO 9001 for Quality,

ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

47463X Chlorine System Manual

Ordering Information

463X Chlorine Analyzer

Mfr. Part No. Code Description

3-4630-10 159 001 748 Chlorine panel, transmitter, free chlorine sensor (0 to 2 ppm), w/ sensor electronics, no pH sensor 3-4630-11 159 001 749 Chlorine panel, transmitter, free chlorine sensor (0 to 2 ppm) w/ sensor electronics, pH sensor w/ electronics 3-4630-20 159 001 691 Chlorine panel, transmitter, free chlorine sensor (0 to 5 ppm) w/ sensor electronics, no pH sensor 3-4630-21 159 001 692 Chlorine panel, transmitter, free chlorine sensor (0 to 5 ppm) w/ sensor electronics, pH sensor w/ electronics 3-4630-30 159 001 750 Chlorine panel, transmitter, free chlorine sensor (0 to 20 ppm), w/ sensor electronics, no pH sensor 3-4630-31 159 001 751 Chlorine panel, transmitter, free chlorine sensor (0 to 20 ppm) w/ sensor electronics, pH sensor w/ electronics 3-4632-10 159 001 768 Chlorine panel, transmitter, chlorine dioxide sensor (0 to 2 ppm), with sensor electronics, no pH sensor 3-4632-11 159 001 769

3-8630-3P 159 001 673 Panel mount chlorine and pH transmitter

3-2630-1 159 001 746 Free Chlorine electrode, 0 to 2 ppm (mg/L) 3-2630-2 159 001 662 Free Chlorine electrode, 0 to 5 ppm (mg/L) 3-2630-3 159 001 747 Free Chlorine electrode, 0 to 20 ppm (mg/L) 3-2632-1 159 001 767 Chlorine Dioxide electrode, 0 to 2 ppm (mg/L)

3-2724-00 159 001 545 Electrode, pH,  at, PT1000, ¾ in. NPT

3-2750-7 159 001 671 pH - Inline Electronics, Digital (S

3-2650-7 159 001 670 Chlorine - Inline Amperometric Electronics, Digital (S3L), 4.6 m (15 ft) cable

Chlorine panel, transmitter, chlorine dioxide sensor (0 to 2 ppm), with sensor electronics, pH sensor w/ electronics

L), 4.6 m (15 ft) cable

Accessories and Replacement Parts

3-4630.390 159 001 688 Rebuild kit, O-rings, boots, screws, 1  lter screen 3-4630.391 159 001 689 Pressure regulator with 1 spare  lter screen 3-4630.392 159 001 690 Acrylic  ow cell complete with all components and connections 3-4630.393 159 310 162 Flow Switch Kit, PP 7300-0024 159 001 693 24 VDC Power Supply

3-2630.391 159 001 674 Free Chlorine electrolyte, 30 mL 3-2632.391 159 310 160 Chlorine Dioxide electrolyte, 30 mL 3-2630.392 159 001 675 Free Chlorine replacement PVDF membrane (1) (sensors sold prior to Nov 1, 2012) 3-2630.394 159 310 164

3-2630.396 159 001 676

3-2630.398 159 310 166

3-2632.398 159 310 165 Chlorine Dioxide maintenance kit - (2) electrolyte, (2) PTFE membranes, (2) Silicone Bands, and Polishing Paper

1220-0021 159 801 182 O-ring FPM 3-0700.390 198 864 403 pH Buffer Kit (1 each 4, 7, 10 pH buffer in powder form, makes 50 mL of each) 3822-7004 159 001 581 pH 4.01 buffer solution, 1 pint (473 mL) bottle 3822-7007 159 001 582 pH 7.00 buffer solution, 1 pint (473 mL) bottle 3822-7010 159 001 583 pH 10.00 buffer solution, 1 pint (473 mL) bottle 3-2700.395 159 001 605 Calibration kit: included 3 polypropylene cups, box used as cup stand, 1 pint pH 4.01, 1 pint pH 7.00 3-2759 159 000 762 pH/ORP System Tester (adapter cable sold separately) 3-2759.391 159 000 764 2759 DryLoc Adapter Cable (for use with 2750 and 2760)

Free Chlorine and Chlorine Dioxide Replacement PTFE membrane (1) (sensors sold after Nov 1, 2012)

Free Chlorine sensor replacement kit - (2) electrolyte, (2) PVDF membranes, and Polishing Paper

(sensors sold prior to Nov 1, 2012)

Free Chlorine Sensor maintenance kit - (2) electrolyte, (2) PTFE membranes, (2) Silicone Bands, and Polishing Paper (sensors sold after Nov 1, 2012)

Georg Fischer Signet LLC, 3401 Aero Jet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057 For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090 For the most up-to-date information, please refer to our website at www.gfsignet.com

GF Signet 4632 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual