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Summary of Contents for Watts HF scientific CLX- XT
- Page 1 OWNER’S MANUAL CLX- XT TRO & Chlorine Monitor Catalog No. 28030 HF scientific 16260 Airport Park Drive Suite 140 Ft. Myers, FL 33913 Phone: 239-337-2116 Toll Free: 888-203-7248 Fax: 239-454-0694 Email: hf.info@wattswater.com Website: www.hfscientific.com Manual Cat #28652 REV 5 (5/2020)
- Page 3 DECLARATION OF CONFORMITY Product Safety – Tested and passed: Part 1: General Requirements UL61010-1 Issued May 11 2012 Ed 3 and CAN/CSA C22.2 #61010-1 issued May 11 2012 Emissions & Immunity – Tested and passed: EN61326-1: 2013 Enclosure Integrity- Tested and Passed: IP66 Tested by Intertek Tested to: IMO MEPC.
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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 Orientation ....................4 Safety .........................4 Symbols Used In CLX-XT ..............5 Theory of Operation ..................6 The Measurement...................6 The Cooling Chamber ................7 The Reagents ..................7 Installation and Commissioning ..............8... -
Page 5: Section Page
Table of Contents (continued) Section Page Instrument Configuration (CONFIG mode) ..........19 Setting the 4-20 mA ................19 Configuring the Error Level..............19 Configuring the RS-485 Port ..............20 Configuring the Alarms ...............20 7.4.1 Alarm 1 ..................20 7.4.2 Alarm 2 ...................21 Enabling the Security Access...............21 Extended Settings.................21 Units of Measurement ................22 Averaging and Filtering ...............22... -
Page 7: Specifications
Specifications Measurement Range 0.00 – 10.00 mg/L (PPM) or Optional 0.00 – 15.00 Mg/L Standard 0-10 mg/L range: 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) Optional 0-15 mg/L range: ±10% of reading or ±0.03 mg/L (PPM) whichever is greater for the entire range... -
Page 8: Overview
Overview The CLX-XT TRO & Chlorine Monitor allows for the reading of oxidant levels of process water on-line. The CLX-XT has been designed to meet the design criteria specified by Standard Methods for the Examination of Water and Wastewater (22 Edition) Method 4500-Cl G. -
Page 9: The Display
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. -
Page 10: Orientation
1.4 Orientation Front View Standard Connections Optional Connections Bottom View 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. -
Page 11: Symbols Used In Clx-Xt
2.1 Symbols Used In This Manual CLX-XT (28652) Page 5 REV 5 (5/2020) -
Page 12: Theory Of Operation
Theory of Operation 3.1 The Measurement The CLX-XT has two solenoid valves, one for sample water (FLOW) and one for draining of the cuvette (PURGE). A third solenoid, along with four check valves forms a reagent pump. Sample water flow is controlled by the FLOW solenoid valve. The PURGE solenoid valve is used to empty the cuvette in the measurement chamber. -
Page 13: The Cooling Chamber
3.2 The Cooling Chamber The CLX-XT has a unique feature that allows for extended reagent life. Under temperature conditions above 25˚C the indicator reagent would quickly oxidize resulting in low readings. To control this condition the CLX-XT has a built-in cooling chamber for the indicator reagent. -
Page 14: Installation And Commissioning
Installation and Commissioning Prior to use for the first time, one of the reagents (the indicator) will have to be mixed. Refer to section 10.2 Replacing or Installing the Reagents. 4.1 Mounting & Site Selection The instrument is designed for wall mounting. If wall mounting is not practical, the instrument can be mounted on any suitable level surface Choose a location that is easily accessible for operation and service and ensure that the front display rests at eye level. -
Page 15: Plumbing
4.2 Plumbing The instrument is designed to require very little head pressure to operate, but will need around 0.34 bar (5 PSI). The maximum pressure for proper operation should not exceed 10.3 bar (150 PSI). The maximum allowable fluid temperature is 55°C (131°F). Opaque tubing is recommended be used if the tubing will be exposed to sunlight, to prevent algae growth. -
Page 16: Instrument Power
4.3.1 Instrument Power The instrument is equipped with 100-240 VAC, 47-63 Hz power supplies requiring 150VA; please verify that the line voltage falls within these specifications. A circuit breaker must be placed prior to the power connection in close proximity and within easy reach to allow for service. -
Page 17: Cooling Chamber Power
4.3.2 Cooling Chamber Power Power must be connected to the cooling control box mounted on the top right side of the cabinet. The requirements are 100-240VA, 47-63 Hz and 100VA. A circuit breaker must be placed prior to the power connection in close proximity and within easy reach to allow for service. -
Page 18: Remote Standby Connections
4.3.5 Remote Standby Connections (Cat #25264) This option allows the instrument to operate on special user control software and hardware, where an external control initiates each cycle. This control line is called RSI or Remote Standby Input. The CLX-XT will indicate the current status on another line called RSO or Remote Standby Output. -
Page 19: Installing Reagents
Installing Reagents The CLX-XT will require that two reagents be installed prior to operation. These are a buffer and an indicator. A 12 month supply of reagents can be ordered under catalog no. 09991. For reagent preparation refer to section 10.2 Replacing and Installing the Reagents. -
Page 20: Operation
Operation The CLX-XT TRO values are reported in milligrams per Liter (mg/L), or if preferred the equivalent Parts Per Million (PPM). Readings above 10.00 mg/L are outside the range of this instrument. Although the CLX- XT 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 21: Routine Measurement (Remote Standby Control)
At any time the standby status can be checked by either Modbus Coil Address 00005 or Input Address 10005. False (0) indicates standby True (1) indicates measurement cycle active. Control is only possible through Modbus Coil Address 00005. 5.3 Routine Measurement (Remote Standby Control Option Cat # 25264) The CLX-XT can operate using Remote Standby Control. -
Page 22: Operating Screens
5.4 Operating Screens During normal operation, the instrument will have the arrow beside AUTO highlighted with the current scale displayed on the lower row of the display and the measured reading on the upper row of the display (see screen shown). The screen shown to the right indicates that the system has just been started or just entered AUTO mode from Service mode and no readings have been taken yet. -
Page 23: Instrument Calibration
Instrument Calibration The instrument was tested prior to leaving the factory. The instrument operates from a pre-determined calibration curve for high accuracy of residual oxidant concentration. It is not necessary to recalibrate to maintain accuracy specifications. If re-calibration is required by a regulatory authority, this can easily be performed if required. -
Page 24: Zero (Offset) Calibration Procedure
6.2 Zero (offset) Calibration Procedure Generally this calibration is only required if readings are expected to be below 1 mg/L or if it is required by a regulatory authority. To perform this calibration, the water supply to the CLX-XT must be changed to chlorine free water such as de-ionized water. This chlorine free water must be run through the instrument for at least 5 minutes prior to using the following procedure. -
Page 25: Instrument Configuration (Config Mode)
Instrument Configuration (CONFIG mode) The instrument has been designed to provide the ability to customize the instrument according to needs at any time during normal operation. This mode has been split into sub-menus to facilitate instrument configuration. This section describes how to use each of the sub-menus to configure the instrument. -
Page 26: Configuring The Rs-485 Port
7.3 Configuring the RS–485 Port The instrument is equipped with an RS 485 port which operates in Simple bus or Modbus. 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 ... -
Page 27: Alarm 2
Alarm 1 Set Point: This prompt is used to select the set point for this alarm; this is indicated by “S/P” shown on the lower row of the display. Select the desired alarm level by using the and buttons. Once the desired set point has been set, press the ... -
Page 28: Units Of Measurement
7.7 Units of Measurement The unit of measure can be set to either mg/L (milligrams per liter) or PPM (parts per million). The factory setting is mg/L. Select the desired UNIT using the and buttons and press the button to accept it. mg/L screen PPM screen 7.8 Averaging and Filtering... -
Page 29: Rs-485 Parameters
7.10 RS-485 Parameters 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 and buttons then press the button to move to the next menu. -
Page 30: Ma Adjustment
7.13 4mA Adjustment If the 4-20 mA setting is turned ON (7.1 Setting the 4-20 mA Output), the following two menus will appear. The first menu outputs a constant 4 mA while allowing for a small amount of adjustment. The adjustment can be made using the and buttons. This adjustment will allow the operator to make the CLX-XT agree with a PLC or SCADA system. -
Page 31: Additional Features And Options
8.0 Additional Features and Options 8.1 RS-485 Outputs The CLX-XT has the capability to operate in two different RS-485 modes. Included are a simple communication mode and Modbus communications. Both modes will automatically configure and do not require any changes or selections 8.1.1 Simple Communication The CLX-XT can provide basic communications over simple programs such as the Hilgraeve HyperTerminal that is included with most Microsoft Windows... -
Page 32: Standby Reagent Purge
8.4 Standby Reagent Purge (Software Option Cat #25316) During times when the CLX-XT is not being operated such as in voyage between ballasting and deballasting no reagent moves past the check valves. In some instances this can cause these parts to clog. To prevent this occurrence a single pump action is enabled at a timed interval. -
Page 33: Troubleshooting
Troubleshooting 9.1 CLX-XT Fault Detection The CLX-XT performs continuous diagnostic monitoring. In the CLX-XT, there are 4 severity levels of fault detection. Level 4, 3 & 2 will allow normal operation, but warn of the problem. Level 1 is an instrument failure and the instrument will not operate. Any faults are displayed in a queue form in the bottom row of the LCD. -
Page 34: Setting Flow Rate
A level 1 fault is a system fault. This is NOT a problem that the operator can correct, and the unit must be returned to the factory for service (see section 9.5). These failures consist of failures in the CPU, A/D, EEPROM or other devices internal to the instrument. The queued display will show FAIL, the upper display will show a four or five digit fault code. -
Page 35: Reagent Clogs
9.4 Reagent Clogs 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. -
Page 36: Routine Maintenance
10.0 Routine Maintenance 10.1 Maintenance Schedule The recommended schedule is shown below. It is important to replace the reagents to get reliable accurate readings from the CLX-XT. The Buffer supplied can last for up to one year*. Each mixed indicator reagent will last for up to 90 days* when kept in cooling chamber. - Page 37 After a PRIME the CLX-XT 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 60 second cycle and up to 24 hours total operation per month.
- Page 38 Cuvette Replacement Check the condition of cuvette and change if it appears badly soiled or discolored. Follow the steps below. Steps: Replace the two Cap Assemblies. Turn the knurled top on the optics system counterclockwise (as viewed for the top) until the cuvette just “pops”...
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Page 39: Replacing Or Installing The Reagents
10.2 Replacing or Installing the Reagents Reagent kits are available from HF scientific for Total Chlorine Refer to section 11.0 Replacement Parts and Accessories for the appropriate Catalog number. There are two reagents required, for the instrument to operate; the buffer and the indicator. The reagents are provided “wet”... -
Page 40: Check Valve Flushing Kit
10.3 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 use only chlorine free water. Complete instructions are included in the kit. 10.4 Instrument Storage If the CLX-XT is relocated or will be inactive for long periods of time, remove the reagents. -
Page 41: Accessories And Replacement Parts List
11.0 Accessories and Replacement Parts List The items shown below are recommended accessories and replacement parts. Accessory Catalog Photo Number Check Valve Flushing kit 25096 Reagent Kit – Total Chlorine 12 09991 month supply Operating Manual CLX-XT 28652 Tubing/Cuvette Kit 09950XT Replacement Cuvette 25018S... - Page 42 Ferrite for 4-20mA or RS-485 24560 Strainer & Regulator Assembly 25357 Replacement T-strainer Screen 28625 Intake Assembly (solenoid, 28411 regulator & T-strainer) 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.
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Page 43: Limited Warranty
12.0 Limited Warranty HF scientific, LLC (the "Company") warrants each ballast water market product to be free from defects in material and workmanship under normal usage for a period of two (2) years from first use or three (3) years from date of the Company’s invoice from the original sale of the product, whichever occurs first. - Page 44 Notes...
- Page 45 Notes...
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