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3

This symbol identifies hazards which, if not avoided, 

could result in death or serious injury. 
This symbol identifies hazards which, if not avoided, 

could result in minor or moderate injury or damage to 

the equipment.
This symbol identifies important information, 

practices or actions.

This pictorial alert you to the need read the manual, 

possibly at a different section.

This pictorial alerts you to electricity, electrocution 

and shock hazards.

1.0 Safety

This manual contains basic instructions that must be followed during 

the commissioning, operation, care and maintenance of the instrument. 

The safety protection provided by this equipment may be impaired if it 

is commissioned and/or used in a manner not described in this manual. 

Consequently, all responsible personnel must read this manual prior to 

working with this instrument.
In certain instances icons or symbols, have been added to give further 

clarification to the instructions. Refer to the 

Table of Contents

 to easily 

find specific topics and to learn about unfamiliar terms.

This manual is intended to be used in conjunction 

with No.28749 for more information on the connection 

and operation of the Air Sentinel.

1.1 Symbols Used in This Manual

WARNING

!

CAUTION

!

NOTICE

1.2 Use in Explosive Environments Safety

In the interests of safety the operator must ensure the atmosphere 

where the instrument is located is safe from gases, vapors, dust or other 

flammable conditions whenever the instrument is opened for service or 

maintenance. At all other times the door must be kept closed with purge 

air connected the purge system operating with the all GREEN lamps lit 

indicating safe operation.

WARNING

!

If power is retained to the CLX-Ex2 after opening the enclosure 

door while NOT in bypass mode, immediately close the 

enclosure door and remove power to the instrument. Contact 

HF scientific service department for further instruction.

Summary of Contents for HF scientific CLX-Ex2 Series

Page 1: ...ded Reagent Life Model CLX Ex2 28034 IOM HF CLX Ex2 28920 WARNING Read this Manual BEFORE using this equipment Failure to read and follow all safety and use information can result in death serious per...

Page 2: ...7 1 Slope gain Calibration Procedure 12 7 2 Zero offset Calibration Procedure 12 7 3 Restore Factory Settings 12 8 0 Instrument Configuration CONFIG mode 13 8 1 Setting the 4 20 mA 13 8 2 Configuring...

Page 3: ...stances icons or symbols have been added to give further clarification to the instructions Refer to the Table of Contents to easily find specific topics and to learn about unfamiliar terms This manual...

Page 4: ...d 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...

Page 5: ...nters 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 p...

Page 6: ...LX Ex2 should be removed If the CLX Ex2 is to be turned off it is recommended that the instrument be placed in SERVICE mode before removing power This ensures that the cuvette is emptied and the flow...

Page 7: ...more information on this feature refer to sections 4 4 4 Remote Standby Connections and 6 2 Routine Measurement with Remote Standby 3 5 The Reagent Cooler A reagent cooler is provided for the 125 ml i...

Page 8: ...l terminals are designed to accept wires in the range of 14 28 AWG All wires should be stripped to a length of 6 mm For line power connections refer to the companion manual Catalog No 28749 4 4 1 RS 4...

Page 9: ...on of the main enclosure with clean dry air Should this air supply pressure fail the PRESSURE lamp on the Air Sentinel unit will turn RED and power to the rest of the instrument is disconnected 5 1 St...

Page 10: ...chlorine of process water on line The chlorine value of the process water is usually reported in milligrams per Liter mg L these units are equivalent to Parts Per Million PPM The CLX Ex2 has two avail...

Page 11: ...is the number to be changed Use the or arrows to select the first of the three numbers in the code and then press the button to accept the first number of the code Now enter the second number in the...

Page 12: ...size of the change that can be made to a current reading The upper limit is the current reading times 1 5 The lower limit is the current reading divided by 1 5 Ensure a reading is posted to the displ...

Page 13: ...vel ERLV The first prompt will be the chlorine limit assigned to the 4 mA output level Select the chlorine level to assign to the 4MA using the and buttons Once the desired level has been set press th...

Page 14: ...he desired UNIT using the and buttons and press the button to accept it 8 8 Averaging and Filtering The CLX Ex2 can display and output averaged readings to help smooth out the response and eliminate l...

Page 15: ...generally not used in ballast water applications and should be set to OFF The instrument requires 110 seconds to complete its normal operations when the WCON is turned On at the factory cycle time the...

Page 16: ...Additional Features and Options 9 1 RS 485 Outputs The CLX Ex2 has the capability to operate in two different RS 485 modes Included are a simple communication mode and Modbus communications Both mode...

Page 17: ...tor can correct and the unit must be returned to the factory for service see section 10 6 These failures consist of failures in the CPU A D EEPROM or other devices internal to the instrument The queue...

Page 18: ...pare Buffer Cap Assembly 1 Spare Indicator Cap Assembly 8 Pump Tubes 1 Spare Cuvette Two replacement sets of reagent cap tubing assemblies are supplied with the CLX Ex2 one for the buffer and one for...

Page 19: ...rning the knurled top clockwise until the cuvette is held securely 5 Check the drawing on the following page to ensure correct installation 6 Return to operation as described T Strainer Cleaning The T...

Page 20: ...s 11 4 Check Valve Flushing Kit Sometimes upon initial commissioning the check valves stick and require manual priming This should not be needed after commissioning Be careful when using this kit to u...

Page 21: ...replacement parts Accessory Catalog Number Photo Reagent Kit Total Chlorine 12 month supply 09991 Air Sentinel Purge Control Operating Manual 28749 N A Operating Manual CLX Ex2 28920 N A Tubing Cuvet...

Page 22: ...es and replacement parts To order any accessory or replacement part please contact the HF scientific Customer Service Department If for any reason technical assistance is needed regarding this instrum...

Page 23: ..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

Page 24: ...dy for breach of warranty and the Company shall not be responsible for any incidental special or consequential damages including without limitation lost profits or the cost of repairing or replacing o...

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