OPERATING INSTRUCTION MANUAL MODEL 2200C CONDUCTIVITY ANALYZER N116-9 REV. 8.0 Water Analytics, Inc. 100 School Street Andover, MA 01810 (978) 749-9949 (855) 747-7623 Fax (978) 749-9961 www.Wateranalytics.
TABLE OF CONTENTS SECTION DESCRIPTION PAGE 1 GENERAL INFORMATION 1 2 SPECIFICATIONS 2 3 INSTALLATION 3 4 DESCRIPTION OF FUNCTIONS 6 5 START-UP AND OPERATION 11 6 OPERATING HINTS 16 7 UTILITY MENU 17 8 DIAGNOSTICS 21 9 TROUBLESHOOTING AND SERVICE 22
MODEL 2200C CONDUCTIVITY CONTROLLER INSTRUCTION MANUAL 1.0 GENERAL INFORMATION The AquaMetrix Model 2200C conductivity analyzer is a versatile industrial microprocessor based instrument. Setpoints and outputs are programmed through the menu with push buttons on the face of the instrument. Calibration is achieved from the front panel menu. The instrument may be used in conjunction with any AquaMetrix MS series cell. The instrument provides non-isolated 0-5 Vdc, 0-1 mA and isolated 4-20 mA analog outputs.
2.0 SPECIFICATIONS DISPLAY: 4 digit LED, 1/2" high digits MEASURING RANGES: Eighteen ranges; The range is set at the factory as ordered, but maybe changed in the field to any other range through the Utility Menu. Temperature: 0°C to 100°C (32°F to 212°F) POWER REQUIREMENTS: Standard: 98-132 Vac, 50/60 Hz (less than 5 VA) Optional: 196-264 Vac, 50/60 Hz (less than 5 VA) 23-26Vdc (nominal current 150mA) AMBIENT CONDITIONS: -30 to 50°C (-22 to 122°F) 0 to 90% R.H.
3.0 INSTALLIATION 3.1 Location 3.1.1 Locate the instrument within 3000 feet of where the AquaMetrix MS or MC conductivity cell is installed. 3.1.2 Select an installation site which is: • free of mechanical vibrations • reasonably clean and dry • protected from falling corrosive fluids within the ambient temperature and humidity specifications • remote from high voltage relay and power switches 3.2 Type of Mounting 3.2.
3.4 Electrical Connections CAUTION: The instrument operates from line voltage. This constitutes a possible shock hazard. Ensure that line power is removed before attempting connections. Note: A separate source of line power may have been connected to the floating relay contacts. 3.4.1 To access the terminal strips open the door of the instrument and then unscrew the captive retaining screw near the upper right hand corner of the panel.
3.5 Cell Connections 3.5.1 Connect the 4 wires of the cell cable to the TB2 terminal strip on the main circuit board being sure to match the colors as printed on the TB2 terminal strip. White and black are the electrode wires; red and green are the temperature sensor wires. Place switches S41 and S42 in the down “on-line” position. Refer to Fig.2 3.5.2 The test resistor R68, is used for the simulation feature. It has a resistance equal to the equivalent resistance of the cell at mid scale.
4.0 Description of Functions 4.1 Overview 4.1.1 The Model 2200C is a microprocessor based conductivity analyzer designed for industrial applications. It is compatible with AquaMetrixʼs MS and MC conductivity cells and offers several measurement ranges. The unit's software makes maintenance and operation easy. 4.1.2 The outputs include voltage-free relay contacts and industry standard analog transmission signals. Two programmable relays are provided for process control and alarm.
4.2 Calibration 4.2.1 All conductivity systems need to be calibrated when first placed in service and thereafter from time to time. The frequency of calibration can only be found by the operator’s experience with each process. Calibration must always be performed when a new sensor is placed in service. 4.2.2 Calibration is accomplished by using buffer solutions, of known conductivity, and adjusting the instrument to show the known value.
4.5.1 The analog output signals consist of a non-isolated 0-1 mA, 0-5 Vdc, and isolated 420 mA signals. 4.5.2 From the factory all of the analog outputs have a linear range corresponding to the full range of the instrument. The analog outputs can be programmed to another linear range by entering two values: • Output High: This is the conductivity value at which you wish to have 100% output. • Output Low: This is the conductivity value at which you wish to have 0% output. 4.5.
4.7.1 The controls which are frequently used in the normal operation of the instrument are all accessible on the control panel. Some switches, which are infrequently used, are located on the back of the main circuit board. 4.7.2 The DIP switches are scanned only on power-up and every time the instrument is taken out of the menu mode.
4.8.1 Output hold, is a function which freezes all output signals at the last value to prevent the occurrence of wild distortions during programming and maintenance. 4.8.2 When the Operations Menu is entered by pressing CALL, the relays and the analog outputs are automatically placed on hold and remain on hold until the instrument returns to on line. The output hold will remain for a maximum of 10 minutes after the last button was pressed, if this feature has been enabled. See Section 4.7. 4.
5.1.1 To enter the menu press CALL and the PASSWORD LED will illuminate. If the password feature has been disabled by the dip switch, TEST will be the first menu item illuminated when the CALL button is pressed. With each press of CALL button you will step through the menu. When the last item, ALARM LOW is reached the menu wraps around to TEST. If you have enabled PASSWORD by placing DIP Switch No.
describe this setup is by example. Suppose you wish the outputs to span from 400uS to 600uS. Proceed as follows: a) Enter the menu by pressing CALL until the OUTPUT HIGH LED is illuminated. Use the arrows keys to make the display read 600. Press ENTER. The display will flash until ENTER is pressed again to confirm the value. b) Press CALL and the OUTPUT LOW LED will illuminate. Use the arrow keys to make the display read 400. Press ENTER.
increasing conductivity, the deadband will be lower than the setpoint. i.e. the auxiliary device connected to the relay will decrease the conductivity. a) Enter the menu by pressing CALL, proceed by pressing CALL until the RELAY DEADBAND LED is illuminated. Now use the arrow keys to make the display read the desired value. Press ENTER. The display will flash until ENTER is pressed again to confirm the value. b) Press RUN, to place the instrument on line, or press CALL for another menu selection. 5.
a) Press CALL to enter the menu, proceed by pressing CALL until the ALARM HIGH LED is illuminated. Use the arrow keys make the display read the desired value. Press ENTER. The display will flash until ENTER is pressed again to confirm the value. b) Press RUN to place the instrument on line, or press CALL, for another menu selection. 5.8 Alarm Low 5.8.1 To set the ALARM LOW proceed as follows: a) Press CALL to enter the menu, proceed by pressing CALL until the ALARM LOW LED is illuminated.
main circuit board, in the up position, (this places a 3000 ohm across the RD and GN terminals) the temperature should read 25°C or 77°F. 5.10.2 The 0-5 Vdc and 0-1 mA analog outputs can be dedicated to follow the process temperature by simply placing DIP switch No. 8 of Bank S1. in the OFF position. The temperature span of the output is set to the utility menu. Refer to Section 7.4. 5.11 Status 5.11.
6.1.2 Be sure the cell cable is well protected. The cell cable should run in conduit but never in the same conduit with line power. Excess cable should be cut off and never coiled. 6.2 Calibration 6.2.1 The system will only be as accurate as your calibration technique. With a clean cell you will need to calibrate only with a change in conditions or after installing a new cell. 6.2.2 Be sure of the value of your calibration solution. Conductivity solutions are available from Water Analytics. 6.
• Adjust the offset and span of the 4-20 mA output 7.2 Access to Utility Menu 7.2.1 The Utility Menu is protected by password. To access the Utility Menu press and hold both RUN and ENTER for five seconds until the PASSWORD LED illuminates. The RUN LED will flash to warn that Utility Menu is in use. Now with the arrow keys make the display read the password, "7". Press ENTER. 7.2.2 The Utility Menu is entirely separate from the Operations Menu but uses the same LED display.
0-20 uS 0-50 uS 0-100 uS 0-200 uS 0-500 uS 0-1000 uS 0-2000 uS 0-5000 uS Range mS 0-10 mS 0-20 mS 0-50 mS 0-100 mS 0-500 mS 0-1000 mS 7.3.2 0.05 0.05 0.05 0.5 0.5 0.5 1.0 1.0 Required Cell Constant 10 10 10 20 50 50 To change the range of your instrument to any range shown above proceed as described below. (Note that changing the range may require a change of conductivity cell.) a) Enter the Utility Menu as described in 7.2.1.
b) Press CALL until the OUTPUT HIGH LED illuminates, which is “Temperature output, 100% point” in the Utility Menu (See table in 7.2.2). Use the arrow keys to make the display read 45.0. Press ENTER. The display will flash until ENTER is pressed again to confirm entry. c) Press CALL and the OUTPUT LOW LED will illuminate, which is “Temperature output, 0% point” in the Utility Menu (See table in 7.2.2). Use the arrow keys to show 10.0 on the display. Press ENTER twice as above.
a) Turn off the power to the instrument. Connect your DVM in series with the 4-20 mA output terminals on the power supply board. b) Turn on the power. Enter the Utility Menu as described in 7.2.1. c) Press CALL until the ALARM HIGH LED illuminates, which is "4-20 mA Output adjust, low" in the Utility Menu (See table in 7.2.2.) Now use the arrow keys to make your DMM read 8 mA. Press ENTER twice to confirm.
8.2 Invalid Calibration 8.2.1 Invalid calibration will be indicated when the input is out of range. This could occur if you had attempted to calibrate with a solution which was outside the range of the instrument. 8.3 Invalid Output 8.3.1 Invalid output will be indicated if the expanded range is less than 10% of full scale. To correct, refer to Section 5.3. 8.4 Invalid Alarm Points 8.4.1 Invalid Alarm will be indicated if the Low Alarm is set higher than the High Alarm. To correct, refer to Section 5.
9.1.2 If your 2200C appears dead or intermittent, check the breaker, make sure that the instrument is set up for the available line voltage and make sure the line voltage is actually available at the terminals. Now measure that sufficient voltage is available at all times; it should be 98 Vac to 132 Vac or 187 Vac to 243 Vac respectively. Shut line power off, making sure it is off. CAUTION: Power to the relays may be supplied from a separate source, shut it off too.
Range uS 0-2uS 0-5 uS 0-10 uS 0-20 uS 0-50 uS 0-100 uS 0-200 uS 0-500 uS 0-1000 uS 0-2000 uS 0-5000 uS Required Cell Constant 0.01 0.01 0.05 0.05 0.05 0.05 0.5 0.5 0.5 1.0 1.0 R68 Value 10,000 4000 10000 5000 2000 1000 5000 2000 1000 1000 400 Range mS 0-10 mS 0-20 mS 0-50 mS 0-500 mS 0-1000 mS Required Cell Constant 10 10 10 50 50 R68 Value 2000 1000 400 200 100 c) Set the temperature simulation DIP switch No. 1, S43 ON and Switch No. 2 OFF. This is to simulate 25°C.
b) The "ESCAPE" procedure is to be used if a unit is serviced for a new processor, or in case of a memory loss problem, when so advised by Water Analytics service support. 9.2.3 Before performing the "ESCAPE" procedure it is important to know that this procedure provides the option to erase all programmed values and replace them with the factory set default values. This means that the range selection and the conductivity calibration must be performed after an "ESCAPE" procedure.
c) The microprocessor circuit board is located on the swing-out assembly behind the door. Swing the assembly out, lift it up to unseat the lower hinge pin (the upper hinge pin is spring loaded.) The assembly is now free. The circuit board is fastened to the front panel by five screws. Remove the screws to release the circuit board. 9.4 Customer Service 9.4.
computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
