Table of Contents
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Catalog No 28815B
Rev 1.5 (10/11)
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:HFInfo@Watts.com
Website: www.hfscientific.com
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Table of Contents
Related Manuals for HF Scientific CLX-Ex
Summary of Contents for HF Scientific CLX-Ex
- Page 1 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:HFInfo@Watts.com Website: www.hfscientific.com Catalog No 28815B...
- Page 3 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:...
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Page 5: Table Of Contents
Unpacking and Inspection of the Instrument and Accessories .....2 The Display ...................3 The Touch Pad ..................3 Orientation ....................4 Safety .........................5 Symbols Used In CLX-Ex ..............5 Use in Explosive Environments Safety ..........5 Theory of Operation ..................6 The Measurement...................6 The Purge Control X-Purge Controller ..........7 Optional Remote Standby ..............8... - Page 6 RS-485 Output ..................26 9.1.1 Simple Communication ............26 9.1.2 Modbus Communication ............26 Remote Panel Meter ................26 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...
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Page 7: Specifications
And Certifications EN61326: 1997 + A1: 1998 + A2: 2001 + A3: 2003 38 kg (83lbs.) Reagents are Shipped Separately Shipping Weight 558mm X 662 mm X 400mm (22” X 24 ½”X15 ¾”) Shipping Dimensions CLX-Ex (10/11) Page 1 REV 1.5... -
Page 8: Overview
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 (21 Edition) Method 4500-Cl G. -
Page 9: The Display
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 3... -
Page 10: Orientation
WATER REGULATOR POWER INLET I/O SIGNALS WIRING COVER BUFFER REAGENT BOTTLE GROUND LUG REPLACEMENT REAGENT CONTAINER DRAIN AIR INLET & WATER INLET PUMP SOLENOID WATER INLET AIR INLET Figure 3: The CLX-Ex with Cover Open CLX-Ex (10/11) Page 4 REV 1.5... -
Page 11: Safety
Refer to the Table of Contents to easily find specific topics and to learn about unfamiliar terms. 2.1 Symbols Used In CLX-Ex Standard IEC symbols are used on the high voltage cover. ISO 3864, No. B.3.6 Caution, risk of electric shock This symbol indicates that hazardous voltages. -
Page 12: Theory Of Operation
CLX-Ex should be removed. If the CLX-Ex 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 is off. -
Page 13: The Purge Control X-Purge Controller
The maintenance key can now be turned and removed and the key cover replaced. The purge controller will display a SOLID GREEN lamp indicating a safe operation and power is kept applied to the instrument. CLX-Ex (10/11) Page 7 REV 1.5... -
Page 14: Optional Remote Standby
For more information on this option refer to sections 4.3.5 (Optional) Remote Standby Connections and 6.2 Routine Measurement with Optional Remote Standby. All connections that carry power not generated inside the CLX-Ex, with the exception of the mains, must be connected through Intrinsic Safety Barriers. -
Page 15: Installation And Commissioning
6 MM O.D. SS TUBING AIR INLET FOR 6 MM O.D. SS TUBING DRAIN FOR 12 MM O.D. SS TUBING 9.433 [239.60] 2.875 [73.02] 4.333 [110.06] 1.997 [50.72] Figure 4: Overall Mounting Dimensions of the Instrument CLX-Ex (10/11) Page 9 REV 1.5... -
Page 16: Plumbing
10.3 bar (150 PSI). The maximum allowable fluid temperature is 55°C (131°F). The fluid waste from drain connection of this instrument contains reagents with large quantities of sample water. HF scientific recommends that operators check with local authorities concerning proper disposal of waste diluted fluids. This waste fluid must NEVER be reintroduced into the incoming water stream. -
Page 17: Electrical Connections
Open), C (Common) and NC (Normally Closed). Please note that these are fail-safe so the “normal” condition is power to the CLX-Ex on and no alarm condition. The relays are rated 240VAC 2A. Operation of these alarms is covered in section 8.4 Configuring the Alarms. -
Page 18: Optional) Remote Standby Connections
PC board. The recommended cable is 22 AWG shielded twisted pair. To prevent ground loops, connect the shield at either the CLX-Ex or at its destination, but not both. The grey terminal block is removable to assist in making connections. -
Page 19: Purge Control X-Purge Controller Operation
5.1 Start Up When power is applied to the CLX-Ex for the first time, ensure that the air supply is connected as stated in section 4.3 and the cabinet is closed and locked. Once power is... -
Page 20: Maintenance By-Pass Operation
The indicator lamp will flash Red to indicate the by-pass mode. Assuming the area around the CLX-Ex has been tested and known to be safe, the enclosure door can now be safely opened and power will remain on to the entire system. The key cannot be removed while operating in the maintenance by-pass mode. -
Page 21: Operation
Liter (mg/L), these units are equivalent to Parts Per Million (PPM). Readings above 10.00 mg/L are outside the range of this instrument. Although the CLX-Ex may display above 10.0 mg/L, these readings will not be within the stated accuracy. As the reagents degrade due to aging, readings above 10.0 mg/L may decrease in value. -
Page 22: Security Access Feature
If the valid access code has been selected, the instrument will be directed to the calibration mode. If the wrong access code is selected, the instrument will return to the AUTO mode. Refer to section 8.4 Enabling the Security Access for more information. CLX-Ex (10/11) Page 16 REV 1.5... -
Page 23: The White Led
The white LED is also used to draw attention to a problem as described in section 10.1 CLX-Ex Fault Detection. In these instances the white LED blinks at a constant rate dependant on the severity of the problem, but is still turned off as described above. Please note that any fault is always posted to message queue on the lower portion of the LCD. -
Page 24: Instrument Calibration
The screen is shown . 4. Press to enter the calibration adjustment. 5. The screen will show the current reading on the CLX-Ex. Using the & buttons adjust the reading to agree with the laboratory method or portable photometer. -
Page 25: Zero (Offset) Calibration Procedure
7.3 Restore Factory Settings If the CLX-Ex displays a CAL error or the calibration was incorrectly performed, it may be desired to restore the factory calibration. All factory defaults including factory configurations can be reset by holding down the button and then pressing and releasing the ... -
Page 26: Instrument Configuration (Config Mode)
The next prompt will be the chlorine level assigned to the 20MA. Select the chlorine level using the and buttons. Once the desired level has been set, press the button to accept it. CLX-Ex (10/11) Page 20 REV 1.5... -
Page 27: Configuring The Error Level
8.2 Configuring the Error Level In case of an error in the CLX-Ex, the 4-20 mA reading can be used to indicate a problem by sending the current to either 4.00 mA, 2.00 mA or 0 mA. The factory default setting is OFF. Select the desired ERLV by using the ... -
Page 28: Alarm1
button. If extended settings are set to OFF, pressing the button will save all settings and the CLX-Ex will automatically return to the normal AUTO mode of the instrument. CLX-Ex (10/11) Page 22 REV 1.5... -
Page 29: Units Of Measurement
PPM screen 8.8 Averaging and Filtering The CLX-Ex can display and output averaged readings to help smooth out the response and eliminate large reading variation in rapidly changing processes. There are 5 settings for the averaging feature: 1 = No averaging, each reading is in “real time”. -
Page 30: Rs-485 Parameters
Make selections using the and buttons then press the button to exit to AUTO mode and save all configuration settings. If the 4-20 mA in section 7.1 is turned ON, there are two additional menus that will appear before returning to AUTO mode. CLX-Ex (10/11) Page 24 REV 1.5... -
Page 31: Ma Adjustment
± 200 counts or about ± 0.2 mA. This setting will be slightly different on each instrument as each CLX-Ex will be factory set to 4.00mA. Press the button when adjustments are complete to save this setting and move on to the 20mA adjustment. -
Page 32: Additional Features And Options
9.2 Remote Panel Meter (Catalog # 19609) The remote panel meter allows for remote indication of the mg/L reading using the 4-20 mA loop of the CLX-Ex. No external power is required, as the meter is run off of the 4-20 mA source of the CLX-Ex. -
Page 33: Troubleshooting
A level 2 fault indicates a severe problem that will usually require technical assistance from HF scientific customer service (see section 10.6). The queued display will show POST. If this fault occurs it will affect the 4-20mA and any alarm set for fault detection (Error). The sample back light blinks at rate of once every 1 second. -
Page 34: Setting Flow Rate
10.2 Setting Flow Rate The flow rate on the CLX-Ex was factory adjusted and usually should not need adjustment. Installation variances may affect the flow. The optimal flow rate through the CLX-Ex may be adjusted if needed. The flow is adjusted by removing regulator vinyl cap and turning the adjustment screw on the pressure regulator. -
Page 35: Diagnostic Chart
10.6 Technical and Customer Assistance If for any reason assistance is needed regarding this instrument please do not hesitate to contact either the HF scientific Technical Service Department or the HF scientific Customer Service Department: HF scientific 3170 Metro Parkway... -
Page 36: Routine Maintenance
The recommended schedule is shown below. It is important to replace the reagents to get reliable accurate readings from the CLX-Ex. The Buffer supplied can last for up to one year. Each mixed indicator reagent will last for up to 90 days* when kept special cooling chamber. -
Page 37: Indicator Reagent Preparation
After a PRIME the CLX-Ex will perform a water calibration (WCAL). It will take a few minutes to complete this procedure. *The 1 year buffer and 90 day indicator reagent life is primarily used on ballast water applications. The assumption is based on the factory default of a 2 ½ minute cycle and up to 60 hours total operation per month. - Page 38 PRIME and then one time to restart reagent flow. The system will automatically return to normal operation. Tubes may darken due to contact with the reagent. This condition does not affect the performance of these parts. CLX-Ex (10/11) Page 32 REV 1.5...
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Page 39: Replacing Or Installing The Reagents
Remove the cap on both bottles replace with the cap supplied with the CLX-Ex. The buffer is installed on the left and the indicator is installed in the cooling chamber. The suction tube for both reagents will reach the bottom of the bottles. -
Page 40: Check Valve Flushing Kit
Figure 6: Check Valve Flushing 11.5 Instrument Storage If the CLX-Ex is relocated or will be inactive for long periods of time (several months), remove the reagents. Flush the reagent system as describe in 11.1 Maintenance Schedule. Place the instrument in Service mode to drain the system then remove power by disconnecting the mains power plug. -
Page 41: Accessories And Replacement Parts List
Intake Solenoid Assembly 28362 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 instrument, please do not hesitate to contact the HF scientific Technical Services Department. -
Page 42: Atex Certificate
13.0 ATEX Certificate CLX-Ex (10/11) Page 36 REV 1.5... - Page 43 CLX-Ex (10/11) Page 37 REV 1.5...
- Page 44 CLX-Ex (10/11) Page 38 REV 1.5...
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Page 45: Warranty
14.0 Warranty HF scientific inc., as vendor, warrants to the original purchaser of this instrument that it will be free of defects in material and workmanship, in normal use and service, for a period of one year from date of delivery to the original purchaser. HF scientific inc.’s obligation under this warranty is limited to replacing, at its factory, the instrument or any part thereof.
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