Table of Contents
Summary of Contents for HF Scientific 20040B
- Page 1 OWNER’S MANUAL CLXB OnLine Residual Chlorine Monitor Model 20040B HF scientific 3170 Metro Parkway Ft. Myers, FL 33916 Phone: 239-337-2116 Fax: 239-332-7643 EMail:HFInfo@Watts.com Website: www.hfscientific.com Catalog #24420B (6/10) REV. 1.1...
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Page 3: Declaration Of Conformity
• Damp Heat to Lloyds register Test Spec. No. 1 Section 14 • Low Temperature to EN 60945 – Section 8.4.2 • 22 Degree Tilt operation Manufacturer’s Name: HF scientific inc. Manufacturer’s Address: 3170 Metro Parkway, Fort Myers, Florida 33916-7597 Importer’s Name: Importer’s Address:... -
Page 4: Table Of Contents
Table of Contents Section Page Specifications ....................1 Overview ......................2 Unpacking and Inspection of the Instrument and Accessories .....2 The Display ...................3 The Touch Pad ..................3 Safety.........................4 Symbols Used In CLXB ................4 Theory of Operation ..................5 Installation and Commissioning ..............6 Mounting & Site Selection ..............6 Plumbing ....................7 Electrical Connections ................8 4.3.1 Power ..................9... -
Page 5: Section Page
Table of Contents (continued) Section Page Extended Settings.................18 Units of Measurement................19 Averaging and Filtering ...............19 LCD Backlight Brightness..............20 7.10 RS- 485 Parameters................20 7.11 Cycle Time ..................21 7.12 Water Conservation ................21 7.13 4 mA Adjustment.................22 7.14 20 mA Adjustment................22 Additional Features and Options ..............23 Backlit LCD ..................23 RS-485 Output ..................23 8.2.1 Simple Communication ............23... -
Page 6: Specifications
ETL Certified to CSA 22.2 No. 61010.1 2 edition dated July 2004 And Certifications 2.5 kg (5.5 lbs.) Reagents Shipped Separately Shipping Weight 406 mm X 406 mm X 229 mm (16”X 16” X 9”) Shipping Dimensions CLXB (20040B) (6/10) Page 1 REV 1.1... -
Page 7: Overview
Remove the instrument from the packing carton. 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. -
Page 8: 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 CLXB touch pad. CLXB (20040B) (6/10) Page 3 REV 1.1... -
Page 9: Safety
This symbol indicates that hazardous voltages may be present under this cover ISO 3864, No.B3.1 Caution refer to accompanying documents. This symbol is reminding you to read the sections in the manual referring to the electrical connections, and potential hazards. CLXB (20040B) (6/10) Page 4 REV 1.1... -
Page 10: Theory Of Operation
CLXB should be removed. If the CLXB 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. CLXB (20040B) (6/10) Page 5 REV 1.1... -
Page 11: Installation And Commissioning
(within 2-3 meters (6-10 ft) of the sampling point). The provided mounting feet will need to be installed with the provided screws. These can be rotated as shown above. Suggested mounting screws are up to M6 (¼”). CLXB (20040B) (6/10) Page 6 REV 1.1... -
Page 12: Plumbing
The drain tubing connects to a hose barb. The rated tubing size is ½” ID tubing. It is recommended that opaque tubing be used to prevent algae growth. Keep this tubing as short as possible. This drain must be kept open to the atmosphere. CLXB (20040B) (6/10) Page 7 REV 1.1... -
Page 13: Electrical Connections
The fluid waste from drain connection of this instrument contains reagents diluted with large quantities of sample water. HF scientific recommends that operators check with local authorities concerning proper disposal of waste fluids. This waste fluid must NEVER be reintroduced into the incoming water stream. -
Page 14: Power
For ease of connecting, remove the plug-in terminal block. Connections are labeled beside this termination on the PC board. The recommended cable is 22 AWG shielded twisted pair. The grey terminal block is removable to assist in making connections. CLXB (20040B) (6/10) Page 9 REV 1.1... -
Page 15: Relays
It should be placed on the RS-485 or 4-20 mA cable outside, as close as possible to the CLXB. If both outputs will be used, an additional ferrite will be needed and can be ordered from HF scientific Catalog number 24560T. -
Page 16: Operation
The screen depicted below indicates that the system has just been started or just entered AUTO mode from Service mode and no readings have been taken yet. Please note that calibrations will not be allowed until a reading is posted. CLXB (20040B) (6/10) Page 11 REV 1.1... -
Page 17: Security Access Feature
Please note that any fault is always posted to message queue on the lower portion of the LCD. CLXB (20040B) (6/10) Page 12 REV 1.1... -
Page 18: Instrument Calibration
Calibration can easily be performed if required. The method is by comparison against another instrument, such as a laboratory or hand held photometer (such as HF scientific’s Chlorine Pocket Photometer). There are two points of calibration. The slope or gain and the zero (offset). To perform the zero the instrument must be plumbed to a sample of known chlorine free water such as de- ionized water for a zero adjustment. -
Page 19: Zero (Offset) Calibration Procedure
If the CLXB 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 button then releasing the button. CLXB (20040B) (6/10) Page 14 REV 1.1... -
Page 20: Instrument Configuration (Config Mode)
Once the desired level has been set, press the button to accept it. The 4MA can be set higher than 20MA level to invert the output current if required. This may be required to control a dosing pump. CLXB (20040B) (6/10) Page 15 REV 1.1... -
Page 21: Configuring The Error Level
Prompts will appear for setting the baud rate, the address and the Modbus transmission mode (RTU or ASCII). Select the correct baud rate (1200, 2400, 4800, 9600, or 19200) for operation of the I/O port by pressing the buttons to change the displayed baud rate. CLXB (20040B) (6/10) Page 16 REV 1.1... -
Page 22: Configuring The Alarms
If the alarm was turned OFF, a prompt will appear to set up alarm 2 (go to section 7.4.2). Alarm 1 Set Point: This prompt is used to select the set point for this alarm; this CLXB (20040B) (6/10) Page 17 REV 1.1... -
Page 23: Alarm 2
If extended settings are set to OFF, pressing the button will save all settings and the CLXB will automatically return to the normal AUTO mode of the instrument. CLXB (20040B) (6/10) Page 18 REV 1.1... -
Page 24: Units Of Measurement
For example, the change between reading 1 & 2, and readings 2 & 3 will be limited to 20%, but the change between readings 3 & 4 will not be limited. Note: This software filter is completely disabled when the averaging (AVG) is set to 1. CLXB (20040B) (6/10) Page 19 REV 1.1... -
Page 25: Lcd Backlight Brightness
These menus will only appear if the RS-485 is enabled (see 7.3). The factory setting is 8 Bit, no (nOnE) Parity, 1 Stop Bit. Make selections using the buttons then press the button to move to the next menu. CLXB (20040B) (6/10) Page 20 REV 1.1... -
Page 26: Cycle Time
Make selections using the 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. CLXB (20040B) (6/10) Page 21 REV 1.1... -
Page 27: Ma Adjustment
This setting will be slightly different on each instrument as each CLXB will be factory set to 20.00mA. When complete with the 20mA adjustment, press the ↵ button to exit to AUTO mode and save all configuration settings CLXB (20040B) (6/10) Page 22 REV 1.1... -
Page 28: Additional Features And Options
The address of the CLXB • The Reading • The Unit (mg/L) A sample communication would look like this: (Master computer requesting a report from address #1) :1 CRLF (CLXB set to address #1 Response) :001 0.0249mg/L CLXB (20040B) (6/10) Page 23 REV 1.1... -
Page 29: Modbus Communication
8.2.2 Modbus Communication Modbus protocol communication manual is included. The Modbus address list is available from HF scientific. 8.3 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 CLXB. -
Page 30: Troubleshooting
A level 2 fault indicates a severe problem that will usually require technical assistance from HF scientific customer service (see section 9.6). The queued display will show POST. If this fault occurs it will affect the 4-20mA and any alarm set for fault detection (Error). -
Page 31: Setting Flow Rate
If reagents fail to flow or Prime it may be due to a clog in either the tubing or at a check valve. To alleviate this you may have to flush the system with Chlorine Free water, preferably Deionized water. See section10.3 Check Valve Flushing Kit. CLXB (20040B) (6/10) Page 26 REV 1.1... -
Page 32: Diagnostic Chart
9.6 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 33: Routine Maintenance
Two complete sets are used in the CLXB; one for the buffer and one for the indicator. The supplied kit is intended to last for one year. Additional kits can be ordered from your local HF scientific distributor or representative. It is recommended to keep one kit on hand at all times. - Page 34 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. CLXB (20040B) (6/10) Page 29 REV 1.1...
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Page 35: Replacing Or Installing The Reagents
Figure 7: Reagent Tubing Installation 10.2 Replacing or Installing the Reagents Reagent kits are available from HF scientific for Free Chlorine and for Total Chlorine Refer to section 11.0 Replacement Parts and Accessories for the appropriate Catalog numbers. There are two reagents required, and supplied in each kit; the buffer and the indicator. -
Page 36: Check Valve Flushing Kit
Figure 8: Check Valve Flushing Kit 10.4 Cuvette Change The cuvette should be inspected at monthly intervals and replaced when needed. If the cuvette becomes badly soiled or discolored it should be replaced. CLXB (20040B) (6/10) Page 31 REV 1.1... -
Page 37: Instrument Storage
Use care when cleaning around electrical components. Do not use any harsh cleaning agents as these may cause damage to the instrument components. Ensure that the system is dry prior to applying power. CLXB (20040B) (6/10) Page 32 REV 1.1... -
Page 38: Accessories And Replacement Parts List
Check Valve Flushing Kit 25096 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 39: Warranty
12.0 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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