HF Scientific CLX-Ex User manual

OWNER’S MANUAL

CLX-Ex Online Residual

Chlorine Monitor

For Use in Explosive Environments

And Extended Reagent Life

Model 28031

HF scientific

3170 Metro Parkway

Ft. Myers, FL 33916

Phone: 239-337-2116

Toll Free: 888-203-7248

Fax: 239-332-7643

EMail:[email protected]

Website: www.hfscientific.com

Catalog No 28815B

Rev 1.5 (10/11)

Catalog #28815B (10/11)

REV 1.5

DECLARATION OF CONFORMITY

0359 II 2G Ex px IIC T4 Gb 0°C ≤ Ta ≤ 55°C

To the following standards:

Explosive Atmospheres –Part 0: Equipment –General Requirements, EN60079-0: 2009

Explosive Atmospheres –Part 2: Equipment Protection by Pressurized Enclosure “p”, EN60079-2: 2007

Emissions & Immunity –Tested and passed EN61326:1997 + A1:1998 + A2:2001 + A3:2003

Manufacturer’s Name: HF scientific inc.

Manufacturer’s Address: 3170 Metro Parkway, Fort Myers, Florida 33916-7597

Importer’s Name:

Importer’s Address:

Type of Equipment: Chlorine Process Monitor

Model No: CLX-Ex

I, the undersigned, hereby declare that the equipment specified above conforms to the above

Directive and Standard

Place: Fort Myers, Florida USA

(Signature)

Date: 1 June 2011 Rowan T. Connelly, General Manager

Table of Contents

Section Page

Specifications....................................................................................................1

1.0 Overview ...........................................................................................................2

1.1 Unpacking and Inspection of the Instrument and Accessories .............2

1.2 The Display ...........................................................................................3

1.3 The Touch Pad ......................................................................................3

1.4 Orientation ............................................................................................4

2.0 Safety.................................................................................................................5

2.1 Symbols Used In CLX-Ex .....................................................................5

2.2 Use in Explosive Environments Safety..................................................5

3.0 Theory of Operation ........................................................................................6

3.1 The Measurement...................................................................................6

3.2 The Purge Control X-Purge Controller..................................................7

3.3 Optional Remote Standby .....................................................................8

3.4 The Reagents .........................................................................................8

3.5 The Reagent Cooler ..............................................................................8

4.0 Installation and Commissioning ....................................................................9

4.1 Mounting & Site Selection.....................................................................9

4.2 Plumbing ............................................................................................10

4.3 Air Supply ..........................................................................................10

4.4 Electrical Connections ........................................................................11

4.4.1 RS-485 ...................................................................................11

4.4.2 Relays .....................................................................................11

4.4.3 4-20 mA ..................................................................................11

4.4.4 (Optional) Remote Standby Connections ................................12

4.4.5 RS-485/4-20 mA cable Ferrite.................................................12

4.5 Installing Reagents ..............................................................................12

5.0 Purge Control X-Purge Controller Operation ...........................................13

5.1 Start Up ...............................................................................................13

5.2 Indicator Lamp.....................................................................................13

5.3 Maintenance By-Pass Operation..........................................................14

6.0 Operation .......................................................................................................15

6.1 Routine Measurement .........................................................................15

6.2 Routine Measurement with Optional Remote Standby .......................15

6.3 Security Access Feature.......................................................................16

6.4 The White LED....................................................................................17

7.0 Instrument Calibration ................................................................................18

7.1 Slope (gain) Calibration Procedure .....................................................18

7.2 Zero (offset) Calibration Procedure ....................................................19

7.3 Restore Factory Settings ......................................................................19

Table of Contents (continued)

Section Page

8.0 Instrument Configuration (CONFIG mode) ...............................................20

8.1 Setting the 4-20 mA.............................................................................20

8.2 Configuring the Error Level.................................................................21

8.3 Configuring the RS-485 Port ..............................................................21

8.4 Configuring the Alarms .......................................................................21

8.4.1 Alarm1 .....................................................................................22

8.4.2 Alarm 2 ....................................................................................22

8.5 Enabling the Security Access...............................................................22

8.6 Extended Settings.................................................................................22

8.7 Units of Measurement..........................................................................23

8.8 Averaging and Filtering .......................................................................23

8.9 LCD Backlight Brightness...................................................................23

8.10 RS- 485 Parameters..............................................................................24

8.11 Cycle Time ..........................................................................................24

8.12 Water Conservation ............................................................................24

8.13 4 mA Adjustment.................................................................................25

8.14 20 mA Adjustment...............................................................................25

9.0 Additional Features and Options ................................................................26

9.1 RS-485 Output .....................................................................................26

9.1.1 Simple Communication ...........................................................26

9.1.2 Modbus Communication..........................................................26

9.2 Remote Panel Meter.............................................................................26

9.3 Desiccant Cartridge..............................................................................26

10.0 Troubleshooting .............................................................................................27

10.1 CLX-Ex Fault Detection ......................................................................27

10.2 Setting Flow Rate.................................................................................28

10.3 Clearing Faults .....................................................................................28

10.4 Reagent Clogs .....................................................................................28

10.5 Diagnostic Chart .................................................................................29

10.6 Technical and Customer Assistance ...................................................29

11.0 Routine Maintenance.....................................................................................30

11.1 Maintenance Schedule ........................................................................30

11.2 Replacing or Installing the Reagents ...................................................31

11.3 Indicator Reagent Preparation .............................................................31

11.4 Check Valve Flushing Kit ...................................................................34

11.5 Instrument Storage ..............................................................................34

11.6 Cleaning the CLX-Ex .........................................................................34

12.0 Accessories and Replacement Parts List .....................................................35

13.0 ATEX Certificate .........................................................................................36

14.0 Warranty .......................................................................................................39

CLX-Ex (10/11) Page 1

REV 1.5

Specifications

Measurement Range

0.00 –10.00 mg/L (PPM)

Accuracy

±5% of reading or ±0.03 mg/L (PPM) whichever is greater for range of

0-6.0 mg/L(PPM) ±10% of reading from 6.01-10.00 mg/L (PPM)

Resolution

0.01 mg/L (PPM)

Cycle Time

Adjustable; 110 seconds to 10 minutes (600 seconds)

Note: the system defaults to 2.5 minutes

Display

Multi-Line Liquid Crystal Backlit Display

Alarms

Standard: Two Programmable, 120-240VAC 2A Form C Relay

Remote Standby Option: One NO relay contact 120-240VAC 2A

Analog Output

Powered 4-20 mA, 600 drive, isolated

Communications Port

Bi-directional RS-485 with Modbus

Water Pressure

Integral pressure regulator 0.34 bar (5.0 PSI) to 10.3 bar (150 PSI.)

Flow Rate to Waste

200 –400 ml/min.

Operating Temperature

0°C –55°C (32°F –131°F)

Wetted Materials

PVC, Borosilicate Glass, Reslyn (FFKM), Viton®(FKM),

Polypropylene, 316 Stainless Steel, Acetal, Noryl®, Silicone

Sample Temperature Range

0°C –55°C (32°F –131°F)

Power Supply

240 VAC (130 to 240VAC), 47-63 Hz, 250VA

Insulation Rating

Double Insulated, Pollution Degree 2, Overvoltage Category II

Environmental Conditions

Not recommended for outdoor use.

Altitude up to 2000 meters

Up to 95 % RH (non-condensing)

ATEX Rating

0359 II 2G Ex px IIC T4 Gb 0°C ≤ Ta ≤ 55°C

Compressed Air

Water and oil free, -40oF (-40oC) Dew Point, Particles <5u, ISA Grade

Hydrocarbon Free. Full time clean dry air at 5.5 - 7 bar (80-101.5 PSI)

@20oC (68oF) Max

Regulatory Compliance

And Certifications

CE Approved, ETL listed to UL 61010-12004 &ETL certified to CSA

22.2 No. 61010.1 2nd edition dated July 2004

EN61326: 1997 + A1: 1998 + A2: 2001 + A3: 2003

Shipping Weight

38 kg (83lbs.) Reagents are Shipped Separately

Shipping Dimensions

558mm X 662 mm X 400mm (22” X 24 ½”X15 ¾”)

CLX-Ex (10/11) Page 2

REV 1.5

1.0 Overview

The CLX-Ex Online Chlorine Monitor allows for the reading of chlorine levels of process

water on-line. The CLX-Ex has been designed to meet the design criteria specified by

Standard Methods for the Examination of Water and Wastewater (21th Edition) Method

4500-Cl G. DPD Colorimetric Method. The CLX-Ex uses a 515nm LED as the

measurement light source.

This instrument has been designed to operate in explosive atmospheres and meets the ATEX

rating as stated in the specifications. The instrument does this with the use of an approved

purge/pressurization controller called Purge Control X-Purge. Please refer to the companion

manual Cat. No. 28815A for all information on:

Operation of the Purge Control X-purge.

Electrical power connections.

Purge Air Connection.

In addition this instrument has vortex cooling. This instrument will automatically control a

connected compressed air line to lower the temperature of one of the reagents, allowing the

reagent an operating life of up to 3 months.

Every effort has been made to ensure the accuracy of this manual. Due to the continuous

development and improvement of all instrumentation, there may be slight differences

between this manual and the instrument received. Therefore, no legal claims can be made

against any discrepancies herein.

1.1 Unpacking and Inspection of the Instrument and Accessories

The table below indicates the items in the shipment.

Item

Quantity

CLX -Ex Monitor

Instruction Manual

Tubing/Cuvette Kit: 8 black pump tubes, 2 different Cap Assemblies,

1 replacement cuvette

Check Valve Flushing Kit

Remove the instrument from the shipping crate. Carefully inspect all items to ensure that no

visible damage has occurred during shipment. If the items received do not match the order,

please immediately contact the local distributor or the HF scientific Customer Service

Department.

CLX-Ex (10/11) Page 3

REV 1.5

1.2 The Display

Figure 1 illustrates all the items that can appear on the display. The upper row of the

display (1) is used for reporting the chlorine levels and to provide user guidance in the

customer setting routine. The lower row of the display (2) is used to communicate error

messages (message queue) and provide user guidance. The display has two icons (3) that are

used to indicate the use of access code and offset mode. In addition, mode arrows (4) are

used to indicate the current instrument operating mode; AUTO (normal operation), CAL

(calibration) and CONFIG (configuration).

Figure 1: Display used in the instrument.

1.3 The Touch Pad

Figure 2 illustrates the touch pad. The touch pad has six buttons: PRIME, SERVICE,

MODE/EXIT,, and 

The MODE/EXIT button is used to cycle between the three operational modes of the

instrument: CAL, CONFIG, and AUTO (Measurement) mode. The button enters the

option or mode that is highlighted or chosen. The and buttons are used to change

settings.

The PRIME and SERVICE buttons are dedicated controls. The PRIME will start 75

reagent pump pulses to prime the tubing after a change or addition of reagent bottles. The

SERVICE button will drain the instrument and hold all operations until either the

SERVICE button is pushed again or the power is reset. This button should be used while

changing the tubing, the measurement cuvette or reagent bottles.

Figure 2: The CLX-Ex touch pad.

CLX-Ex (10/11) Page 4

REV 1.5

VORTEX ASSEMBLY

PURGE

CONTROL

INLET WATER STRAINER

BUFFER REAGENT

BOTTLE

PUMP SOLENOID

OPTICAL BLOCK ASSY

MAIN CONTROL

CHASSIS

TEMPERATURE CONTROL

(UNDER FINGER GUARD)

WIRING COVER

REPLACEMENT

REAGENT CONTAINER

GROUND LUG

WATER REGULATOR

DRAIN AIR INLET & WATER INLET

WATER INLET

AIR INLET

POWER INLET

I/O SIGNALS

VENT ASSEMBLY

1.4 Orientation

From the diagram below the major components can be located. Note that two reagents are

required the buffer and the indicator. The reagents are discussed in the Routine Maintenance

section 10.0.

Figure 3: The CLX-Ex with Cover Open

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