Myron L 750 II Series Operation Manual
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Myron L 750 II Series Operation Manual

Conductivity/tds & resistivity monitor/controller
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PO# TR179853
Manuf #: 753II-12-PC
0-12M OHM RESISTIVITY METER
Manuf #: CS10
RESISTIVITY SENSOR
Manuf #: CS14
2M OHM CALIB UNIT
REFERENCE #133418
RELAY
INTERNAL CO BATCH 203/2009
RE: ITEM ADDED
INTERNAL CO BATCH 330/2009
RE: ITEM AMENDED FROM EA TO CHG
750 Series II
CONDUCTIVITY/TDS
RESISTIVITY
MONITOR/CONTROLLER
Operation
INSTALLATION • OPERATION • MAINTENANCE
Conductivity/TDS Models: 756II, 757II, 758II & 759II
Resistivity Models: 751II, 752II, 753II & 754II
ACCURACY • RELIABILITY • SIMPLICITY
&
Manual
16 November 17
NEW MODEL #753II-12-SC-PC
RES-DIGITAL MONITOR/CONTROL
AS PER QUOTE #106488 DATED
OCTOBER 28, 2009
INTERNAL CO BATCH 211/2009
RE: ITEM ADDED
INTERNAL CO BATCH 330/2009
RE: ITEM AMENDED FROM EA TO CHG
Water Quality Instrumentation
Accuracy • Reliability • Simplicity

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Summary of Contents for Myron L 750 II Series

  • Page 1 750 Series II CONDUCTIVITY/TDS & RESISTIVITY MONITOR/CONTROLLER Operation Manual 16 November 17 INSTALLATION • OPERATION • MAINTENANCE Conductivity/TDS Models: 756II, 757II, 758II & 759II Resistivity Models: 751II, 752II, 753II & 754II PO# TR179853 Manuf #: 753II-12-PC NEW MODEL #753II-12-SC-PC 0-12M OHM RESISTIVITY METER RES-DIGITAL MONITOR/CONTROL Manuf #: CS10 AS PER QUOTE #106488 DATED...
  • Page 3 This section covers the specifications, installation, set up, and “115/230 VAC” SELECTION IS CORRECT FOR YOUR operation of each option. REQUIREMENTS. FAILURE BEYOND THE RESPONSIBILITY OF THE MYRON L COMPANY. ® QUICK LOCATOR See section II.E.2. and figure II.E.1. SC/SCO MODULE, (Second Relay), see section III.A. 4A/4AO MODULE (4-20mA), see section III.B.
  • Page 4 PRIMARY COMPONENT IDENTIFICATION - resistivity measurements, i.e. the Myron L Ultrameter II™. See section V.C.4 for description. Section V.A. The following procedure describes the easiest method for...

  • Page 5: 750 Series Ii Illustration (758Ii-121-Sc)

    MICROSIEMENS / CM 750II HIGH SET POINT 750 Series II Model 758 -121-SC (A Digital Conductivity Monitor/controller, with a Range of 0-2000 µS, and a Second Alarm/control, Displaying Full Scale)

  • Page 6: Table Of Contents

    TABLE OF CONTENTS SECTION PAGE 750 Series II ILLUSTRATION (758II-121-SC) ........1 INTRODUCTION .
  • Page 7 TABLE OF CONTENTS Continued SECTION PAGE Installation ..........19 Set Point Conversion (SPC) / Reversing Set Point .
  • Page 8 TABLE OF CONTENTS SECTION PAGE Optional Front Panel Items ........52 OEM FRONT PANEL INDICATORS &...

  • Page 9: Introduction

    Models 757II Conductivity/TDS & 752II Resistivity Analog Monitor/controller. Standard front panel is equipped with a linear analog meter display and a “SET POINT” switch Thank you for selecting one of the Myron L Company’s with High/Low indicator lights. Single set point is internal to ®...

  • Page 10: Optional Features

    NOTE: 3 1/2 digit LCD may be replaced with either a 3 1/2 or a AMBIENT TEMPERATURE RANGE 4 1/2 digit backlit LCD - available as options. 0-60ºC/32-140ºF DIMENSIONS ACCURACY 152H x 122W x 96 D mm / 6.0 H x 4.8 W x 3.8 D in. Analog Models: + 2% of Full Scale HOUSING CONSTRUCTION Digital Models: + 1 % of Full Scale...

  • Page 11: Sensors

    SENSORS polypropylene). * -TP Sensor 8 wire cable, contact the Myron L Company ® CONDUCTIVITY/ TDS 750 Series II Conductivity/TDS Monitor/controllers use the TEMPERATURE COMPENSATION CS51LC, CS51 or CS52 Series sensor depending on range. Automatic to 25°C, between 0-100°C/32-212°F The 1.0 cell constant CS51 model is recommended for ranges except high temperature models - up to 205°C.

  • Page 12: Range Selection Guide

    G. 750 SERIES II RANGE SELECTION GUIDE CONDUCTIVITY/TDS & RESISTIVITY Add Range NUMBER below to instrument model number, i.e. 758II-”112” = 0-50 ppm Digital Monitor/controller. 756II, 757II, 758II & 759II 751II, 752II, 753II & 754II RANGE CONDUCTIVITY/TDS RESISTIVITY Dash # Dash # Resistivity 0-20 MΩ...

  • Page 13: Installation

    Attach and securely fasten the SMP to the Monitor using the 1/4” X 20 X 3/8” screws provided. WARNING: THE MYRON L COMPANY RECOMMENDS THAT ® Mount the SMP to the prepared site using the selected ALL MOUNTING AND ELECTRICAL INSTALLATIONS BE screws or bolts.

  • Page 14: Oem Mechanical Installation

    Slide the enclosure through the panel cutout .125 X4 until its flange contacts the panel. (3.125) 5. Insert mounting screws through the flange mounting holes and tightly secure. Reconnect all panel cable(s)/wire(s) and re- 1.880 2.218 Dia. secure the front panel using 6-32 x 3/8” (47.75) 56.34 screws provided. Caution: Do not use 6-32 x 1/2” used on “picture frame”...

  • Page 15: Sensor Insertion / Dip Mount Assemblies

    WARNING: All AC line powered Monitor/controllers are factory set for 115 VAC. Before starting, ensure the input power “115/230” selection is correct for your requirements. Failure to do so is beyond the responsibility of the Myron L ® Company. See section II.E.2. below and figure II.E.1.

  • Page 16: 5/230 Vac Conversion

    Turn the front panel around so that the back side is Requirements: facing you and set aside for now. For Conductivity/TDS; one 10kΩ 1% resistor, user supplied or Carefully remove front panel, leaving the harness may be ordered from the Myron L Company. ® connected. For Resistivity; one 100kΩ 1% resistor, and one 5.49kΩ Using the enclosure cutouts, install the proper wire and...

  • Page 17: Solid State Output Connection

    d. Install 5.49kΩ resistor at RED (RD) and the SENSOR LEADS NEUTRAL (NU) connector locations, as shown in INSTALL 100KΩ RESISTOR HERE figure II.E.5. 5. Carefully reinstall the front panel, bottom first. Ensure no wires have been pinched between enclosure and front panel. BK WT RD GN NU R- R+ Reinstall the four (4) screws and tighten. To operate, turn power ON.

  • Page 18: Connect To Your Own Alarm Or

    Use the following as guidelines. POWER MONITOR/CONTROLLER Connector is a standard 2 wire Methode* style SOURCE CIRCUIT BOARD connector. Connector with 8” wires, part #RAH, is available from the Myron L Company. ® Ensure your requirements do not exceed the 24VDC 115 to 24VAC TRANSFORMER Unregulated 30mA maximum.

  • Page 19: 0-10 Vdc Output

    0-10 VDC RECORDER OUTPUT The 0-10 VDC output is designed to give the user the capability of sending a signal to a remote meter, recorder, PLC or SCADA system. CONNECTION Place the user supplied interface cable and watertight cable restraint into the enclosure’s appropriate access 0-10V Output hole. Skip for OEM. 2. Connect the Recorder’s plus (+) and minus (-) terminal Recording wires to the Recorder output connectors. (See figure Device II.E.1.) 3. Refer to Section V.C.1.b for the procedures to calibrate the 0-10 VDC voltage output.

  • Page 20: Re-Range Your Monitor/Controller (Range Module Installation)

    NOTE: Some OEM models may not be re-ranged being OUTPUT PUSH TO TEST originally manufactured with a fixed range. If your application requires re-ranging an OEM model, first contact the system manufacture for help. The Myron L Company may re-range or ® BK WT RD GN NU R- R+ exchange your instrument at a cost. INSTALLATION...

  • Page 21: Changing Analog Meter Scale (Dial)

    CHANGING ANALOG METER SCALE (DIAL) To remove the scale, lightly press on bottom of scale, After changing ranges on an analog model 750II it may be nec- the top will lift up. Be extremely careful not to bend the essary to change the meter scale (dial). The following steps will pointer (needle) or to move the Zero Adjust (ZA).

  • Page 22: Label Change

    Grasp Scale Here and Slide Out TOP Align Pointer with FIRST Line SCALE (dial) Pointer (needle) 1/8" (3.18mm) Hex Screws (2) Press Zero Adjust (ZA) Lightly CLEAR PLASTIC COVER Here (case not shown for clarity) METER CASE Inverted "Y" Figure II.G.9 Figure II.G.7 LABEL CHANGE Since you have re-ranged your Monitor/controller it may be...

  • Page 23: Options & Accessories Installation

    III. OPTIONS & CAUTION - READ FOLLOWING CAREFULLY ACCESSORIES WARNING: BEFORE STARTING, MONITOR/ CONTROLLER IS INSTALLED, ENSURE THE POWER IS SC/SCO MODULE OFF. FAILURE TO DO SO COULD CAUSE DAMAGE TO (SECOND ALARM/CONTROL OPTION) THE INSTRUMENT, AND COULD BE HARMFUL OR FATAL (Digital &...

  • Page 24: Set Point Conversion (Spc) / Reversing Set Point

    Front Panel Install the SCO Second Alarm/Control Set Point Switch WARNING: There are two (2) O-rings installed on the switches, in the UPPER center position. one (1) on the shank and the other is under the push button. Re-install #1 (original) Set Point Switch in the LOWER Both of these O-rings must be reinstalled to maintain IP65/ center position.

  • Page 25: Set Point Adjustment

    LIGHTS & 751 756 ADJUST SWITCH 752 757 CONNECTOR 753 758 754 759 RELAY #2 MYRON L COMPANY SOLID STATE OUTPUT (24VDC 30mA) TRANSFORMER RUBBER TAPE PIEZO ELECTRIC ALARM - PA™ OR (DO NOT REMOTE ALARM - RA™ OR REMOVE)

  • Page 26: Hysteresis

    Ensure the polarity is correct. Attach your wires. Attach harness connector to controller connector (RA) FRONT PANEL Primary or Main CB per figure III.A.4. Alarm/control Location If necessary, you may order connector with 8” Harness Figure 6 part #RAH, from the Myron L Company. ®...

  • Page 27: 4Ao Module (4-20Ma Option)

    4A/4AO MODULE (4-20mA OPTION) low as 10Ω. This “-4A” option will drive any impedance from 0 to 600Ω without any degradation of performance. Available only on the digital models 758II, 759II, 753II and 754II, or all analog and digital OEM Monitor/controllers. There are two modes in which current loop transmitters operate; Self-Powered and Remote-Powered. 4-20mA Self/Remote-powered Isolated output module Self-Powered —...

  • Page 28: Recalibration

    FATAL TO PERSONNEL. ONLY QUALIFIED PERSON- shown in figures III.B.1. & III.B.2. This assumes you NEL SHOULD INSTALL ELECTRICAL EQUIPMENT. have already connected the other end of the wires as required. Place the remote interface cable and user supplied Physical watertight cable restraint into the enclosure’s If the front panel has all ready been removed from the enclosure appropriate access hole.
  • Page 29 13. Reinstall the four (4) screws and tighten. 14. To operate, turn power ON. 4-20 CONNECTOR CONNECT 4AO HARNESS HERE MYRON L COMPANY TRANSFORMER 115/ FUSE* PWR C GD NC NO CM MAIN CIRCUIT BOARD ASSEMBLY Figure III.B.4.

  • Page 30: Converting A Current To A Voltage

    CONVERTING A CURRENT TO A VOLTAGE Current measuring devices actually measure voltage, but have an internal resistor as shown in figures III.B.1 & III.B.2 and are scaled to display in current. If you have a voltage input instru- ment and you wish to utilize the current from the 4A (4-20mA) Module, the following will help you to make this conversion. To convert a 4-20 mA current output to operate or drive a volt- age input device it is necessary to install a LOAD resistor across the input terminals as shown in figures III.B.6 & III.B.7. The...

  • Page 31: Tp/Tpo Module (Temperature Option)

    TEMPERATURE MODULE INSTALLATION (Digital Models only) Briefly - Temperature Module ordered with Monitor/controller. The Temperature Module replaces the plastic display retainer Temperature Module Kit ordered separately. plate attached to the front panel. Requires; CSXX-TP sensor, Special Order, i.e. CS51-TP The display harness plugs into the Temperature Module instead or CS40-TP, see sensor data sheet.

  • Page 32: Recalibration

    Set front panel down or carefully allow to hang from the harness. Do not drop as the harness connector will pull SWITCH BEZEL PUSH BUTTON out allowing the front panel to fall. While holding the display and the plastic display retainer plate, carefully remove the display harness connector.

  • Page 33: Tpc "Calibration" Module Procedure

    Remove the sensor leads from the Temperature Module. TPC Module 3. Remove the 0-5VDC leads from the Temperature PRESS BUTTON FOR Module. 199.9ºC/5.0VDC Press TPC Module into 0-5VDC + MYRON L COMPANY Press TP Calibration Module (TPC) firmly into sensor OUTPUT - TPO connector as shown. input connectors as shown in figure III.C.5. ORANGE 5. Attach the DVM to the 0-5VDC output on the TPC BLUE module. See figure III.C.5.

  • Page 34: System Calibration

    ALARM/CONTROL FUNCTION You have now completed the installation and set up of your 1000.0Ω RESISTOR Myron L Temperature Module option. Continue to set up and adjust the control feature of the Temperature Module option JUMPER (-TH/THO & -SC/SCO), if installed.
  • Page 35 counterclockwise position. If not, turn SCO Set Point control fully CCW - it may be 30 turns - or until it clicks. For location see figure III.C.13. Turn power ON. Press BOTH the Temperature Select switch and the Set Point switch on the front panel. Adjust the TP/TPO Module Set Point Two (SP2) to SET POINT temperature as desired. See figure III.C.1.

  • Page 36: Oem Installation (Single Display)

    BK WT RD GN NU R- R+ DISPLAY CONNECTION FS SW HYS1 RANGE PANEL MOUNTED DISPLAY MODULE REAR VIEW Figure III.C.14 751 756 752 757 753 758 754 759 MYRON L COMPANY TRANSFORMER 115/ FUSE* C GD NC NO CM Main CB Assembly...

  • Page 37: Oem Installation (Dual Display)

    RANGE MODULE PANEL MOUNTED DISPLAY REAR VIEW Figure III.C.15 MYRON L The DH2DD or DHDD is a “Y” harness that is connected from COMPANY the main CB to the Cond/TDS, RES or pH/ORP display while TRANSFORMER the other end is connected to the Temperature Module as shown in figure III.C.15.

  • Page 38: Th/Tho Module (Alarm /Control Harness Option)

    ALARM/CONTROL KIT HIGH Primary Control (Digital & OEM Models only) If the front panel has all ready been removed from the enclosure Controller wiring Harness (requires second alarm/control skip to step 3. module) ordered with Monitor/controller. Using a standard slot screwdriver remove the four (4) Controller wiring Harness (requires second alarm/control screws on the front panel.
  • Page 39 by pulling lightly on the wires. It may be necessary 11. Locate and remove JUMPER from the Temperature to use a small flat screwdriver to slightly spread the (TPO) Module as shown in figure III.D.5. retaining ring. See figure III.D.1. 12. Attach Brown 5 wire connector to the TPO Module as Remove Set Point Switch from the front panel, shown in figure III.D.9.
  • Page 40 Remove harness from SCO Module by pulling on INSTALL THO HARNESS harness, see figure III.D.3. BLACK CONNECTOR HERE Set SCH harness aside, it is no longer used. Remove SPC jumpers (2) from SC/SCO Second Alarm/Control Module, see figure III.D.3 for SPC INSTALL THO HARNESS WHITE jumper location. CONNECTOR HERE HYS2 ZERO SCO SET POINT #2 ADJUST...
  • Page 41 HYS2 ZERO TP/TPO - TEMPERATURE MODULE TEMP CONTROL HARNESS DISPLAY DISPLAY SELECT 0-5VDC MICROSIEMENS / CM REMOVE DISPLAY CONNECTION SC/SCO TEMP SET POINT SENSOR SWITCH TEMPERATURE RED LED TEMPERATURE HIGH LABEL SET POINT LOCATION TEMPERATURE Green PRIMARY PRIMARY SET FRONT PANEL RED LED POINT SWITCH Figure III.D.10...
  • Page 42 Set Point Conversion (SPC) / Reversing Set Point The Myron L Company ships the Temperature controller config- ® ured to Alarm/control when the temperature is TOO HIGH. If the configuration is correct for your requirements skip to Tempera- ture Set Point Adjust. As many uses require the temperature to be controlled by the use of a heater or chiller, the TPO Module may be configured to maintain an elevated or lowered temperature as required.

  • Page 43: Dual (Stacking) Temperature Module (Tpo) & 4-20Ma Module (4Ao)

    INSTALLATION OF BOTH TEMPERATURE MODULE & 4-20mA OUTPUT MODULE SCREWS (Digital and OEM Models ONLY) -TP/TPO Temperature Module. 4A/4AO -4A/4AO4-20mA Self/Remote-powered Isolated output module. PLASTIC DESCRIPTION SPACERS (4) The following instructions describe how to install BOTH the 4A/4AO and the TP/TPO Modules to a Digital model Monitor/ controller.

  • Page 44: 3So/3Se Module (3 Sensor Option)

    3 SENSOR INPUT MODULE (CB) at the sensor input connectors. 3 Sensor Input Module with 3 foot / 1 meter cable ordered separately (customer installed and A separate small connector & harness is for the alarm/control mounted). disable or kill, and attaches to the small 2 pin male connector 3 Sensor Input Module with 3 foot / 1 meter cable located to the left of the large sensor input connectors on the main CB.

  • Page 45: Alarm/Control Configuration

    Figure III.F.3 Figure III.F.4 Figure III.F.5 Figure III.F.2 Factory Default Module to the main Monitor/controller CB at the sensor only the Primary or First switch position SENSOR 1 is set to input location as shown on label. alarm/control as shown in figure 2, or figure 7 for 3SE. If your Attach the separate small cable harness from the 3 Sensor particular application requirements are different, the following Input Module to the small 2 pin male connector located will help you to reconfigure the alarm/control function to another...
  • Page 46 figure III.F.4. To disable the Sensor alarm/control function completely. Locate the 8 position select switch on the 3S Module. Set all S prefixed select switches in the OFF position, see figure III.F.5. 3SE MODULE with NCLOSUR If adding an alarm/control sensor. Locate the 8 position select switch on the 3S Module. Set appropriate select switch DOWN or ON, i.e.

  • Page 47: 3Ro/3Re Module (3 Range Option)

    3 RANGE SWITCH MODULE ELECTRICAL EQUIPMENT. Physical 3 Range Switch Module with 3 foot / 1 meter cable 3RO Module only - A suitable location must be found that is both ordered separately (customer installed and convenient to the user and allow sufficient clearance for the 3 mounted). Range Switch Module to clear obstructions. 3RE 3 Range Switch Module with 3 foot / 1 meter cable 3RE - 3 Range Switch Module with enclosure, a cutout the size...
  • Page 48 3RO Module as an accessory you may need to reconfigure the select switch for it to Range properly. Locate the 8 position select switch on the 3R Module. Set the COND select switch in the DOWN or OFF position, see figure III.G.6. Set the RES select switch in the UP or ON position, see figure III.G.6.

  • Page 49: 3Sro/3Sre Module (Combined 3 Sensor & 3 Range Option)

    H. 3 SENSOR / 3 RANGE MODULE is required. 3SRO 3 Sensor / 3 Range Switch Module with 3 foot / 1 meter A five conductor cable is connected to the 3SR Switch Module. cable ordered separately (customer installed and This cable is connected to the main Monitor/controller circuit mounted). board (CB) at the sensor input connectors.

  • Page 50: Alarm/Control Configuration

    SENSOR INPUT Sensor Connections For convenience, it is recommended you connect the Primary or controlling sensor to SENSOR 1 position as shown in figure III.H.1. BK WT RD GN NU R- R+ TO SENSOR INPUT BACK/CONNECTOR SIDE SENSOR RANGE SWITCH SWITCH MAIN CIRCUIT BOARD NOT INSTALLED ON MONITOR ONLY MODELS.
  • Page 51 For Conductivity/TDS - X1, X10 and X100. For Resistivity - X1, 0.1, and 0.01. If adding an alarm/control range. Locate the 8 position select switch on the 3SR Module. Set appropriate select switch UP or ON, i.e. to add X100, set switch marked X100 UP or ON, see figure III.H.7.

  • Page 52: Pa Piezo Alarm

    NOTE: If the sensor is connected, the solution value, set point Size — 24 x 9.5 mm value and Set Point Conversion (SPC) jumpers may affect the test. For a Conductivity/TDS Monitor/controller, as shipped from the Myron L Company, the alarm ® Double Backed Tape will Harness ~12"...
  • Page 53 For a Conductivity/TDS Monitor/controller, as shipped from the Myron L Company, the alarm will ® sound off when the Full Scale Test Switch is pressed. For a Resistivity Monitor/controller, as shipped from the Myron L Company, the alarm will sound ®...

  • Page 54: Ra Remote Alarm

    Using a standard slot screwdriver remove the two (2) Case Material — ABS plastic screws on the Myron L Monitor/controller front panel. Dimensions — 4.75L x 2.56W x 1.56H (121L x 65W x 40H) Carefully wiggle the front panel to loosen and pull Mounting —...
  • Page 55 FULL SCALE PUSH TO TEST BK WT RD GN NU R- R+ FS SW HYS1 751 756 752 757 753 758 754 759 MYRON L COMPANY TRANSFORMER Connector 115/ FUSE* C GD NC NO CM MAIN CB ASSEMBLY Figure III.J.2...

  • Page 56: Iv. Operating Procedures

    IV. OPERATING PROCEDURES Digital Conductivity Monitor/controller with FRONT PANEL INDICATORS & CONTROLS optional Dual The front panel illustrations to the right, switch and indicator Alarm/controls, and operational descriptions have been provided to assist the user MICROSIEMENS / CM Temperature with in identifying and operating the 750 Series II Monitor/controllers.

  • Page 57: Oem Front Panel Indicators & Controls

    OEM FRONT PANEL INDICATORS & Digital Conductivity CONTROLS Monitor/controller with The simulated OEM front panel illustrations to the right, and optional Dual switch and indicator operational descriptions have been pro- Alarm/controls, and vided to assist the OEM user in identifying and operating the Temperature with 750 Series II Monitor/controllers.

  • Page 58: Setup Procedures

    CHECK-OUT PROCEDURES CAUTION - READ FOLLOWING CAREFULLY The following check-out procedures are used to verify that the 750 Series II Monitor/controller is operating properly. It is as- SETUP PROCEDURES sumed that the Monitor/controller power is ON, that it is con- nected to a CS51 or appropriate Sensor, and that the Sensor is These Setup procedures cover (1) converting the alarm circuit to immersed in water within the range that the Monitor/controller...
  • Page 59 CAUTION: adjusting the hysteresis too tight may cause the alarm to fluctuate (on-off) due to flow, chemical mixing or bub- bles causing the relay to chatter. This condition is to be avoided, it could damage your valves, pumps, etc. and will eventually damage the relay. * Applies to both set points if so installed. The following is assuming the front panel is already removed and the set points have been set, if not see above, Locate the hysteresis control adjustment located next...

  • Page 60: Component Identification, Calibration And Preventive Care

    COMPONENT IDENTIFICATION, CALIBRATION AND PREVENTIVE CARE PRIMARY COMPONENT IDENTIFICATION As identified in Section III, the Monitors/controllers switch(es) and indicator components are mounted directly to the front panel. The Monitor/controllers main circuit board is contained within and mounted to the back of the enclosure. Some models with options have an additional circuit board mounted behind the front panel, i.e.

  • Page 61: Meter Mechanical Zero Procedures

    Ensure power is OFF. 2. Attach DVM to RECORDER output connection. CALIBRATION PROCEDURES Turn power ON. All Myron L Monitor/controllers are factory calibrated prior to Press and hold the Full Scale Test switch (FS SW). shipping and are ready to install without further calibration. 5. The DVM should indicate 10.00VDC.

  • Page 62: Sensor Substitute Calibration

    Full Scale to 1990, otherwise an overrange Scale Test”. However, your requirements may be such that a condition may occur. crosscheck or verification is required. Sensor Substitutes are After adjustment, turn power OFF. available from the Myron L Company, see accompanying chart, 10. Re-install front panel as described below in ® figure V.C.1, for part number.

  • Page 63: Transfer Standard Method

    A high quality hand-held instrument, one capable of accurate conductivity/TDS and/or “resistivity” readings such as the Myron L Ultrameter II™, is calibrated using a standard solution, or if so desired, sent to a third party laboratory for calibration & certification. Preferably the standard solution should be as close as practicable to the area of the Monitor/controller operation, i.e.

  • Page 64: Vi. Options & Accessories

    VI. OPTIONS & ACCESSORIES OPTIONS ORDERED WITH MONITOR/CONTROLLER PART # DESCRIPTION Second Alarm/control Module (Monitor/controllers only) 4-20mA Self-Powered Isolated Output Module (digital models only) 70 db Piezo Electric Alarm (mounted on front panel) (digital Monitor/controller models only) -PAT Piezo Alarm and Timer Module (digital Monitor/controller models only) -35BL 3 1/2 Digit Backlit Liquid Crystal Display (LCD) -45BL...

  • Page 65: Standard Solutions & Buffers

    SS2OZ - 2 oz. These same buffers may be used for calibration and recertifica- tion of your Myron L or other handheld instrument. Customer-specific Standard Solutions available by special order. Contact us with your request. pH Buffer Solutions pH buffers are available in pH values of 4, 7 and 10. Myron L ® Company buffer solutions are traceable to NIST certified pH references and are color-coded for instant identification. They are also mold inhibited and accurate to within ±0.01 pH units @ 25°C. Order 4, 7 or 10 Buffer.

  • Page 66: Vii. Replacement Parts

    VII. REPLACEMENT PARTS MODEL DESCRIPTION ELECTRONIC MODULE CONDUCTIVITY 756CB........756II Circuit Board Analog Monitor only 757CB........757II Circuit Board Analog Monitor/controller 758CB........758II Circuit Board Digital Monitor/controller 759CB........759II Circuit Board Digital Monitor only RESISTIVITY 751RB........751II Circuit Board Analog Monitor only 752RB........752II Circuit Board Analog Monitor/controller 753RB........753II Circuit Board Digital Monitor/controller 754RB........754II Circuit Board Digital Monitor only (Must select Range Module, see 750II Range Selection Guide)
  • Page 67 VII. REPLACEMENT PARTS Continued ENCLOSURE 700II ECP ......750II Rear Housing (Box) for Picture Frame Front Panel 700II ECR ......750II Rear Housing (Box) for Roll-off Front Panel FRONT PANEL with UPPER and LOWER LABELS Only (Must select Resistivity or Conductivity type) Add “P”...

  • Page 68: Viii. Warranty

    A reasonable service charge will be made for diagnosis or repairs due to normal wear, abuse or tampering. Warranty is limited to the repair or replacement of Monitor/controller or sensor only. The Myron L Company assumes no other ®...

  • Page 69: Ix. Glossary

    IX. GLOSSARY 442™ An Internationally recognized “natural water” standard developed by the Myron L Company in 1964. ® Algorithm A procedure for solving a mathematical problem. See Addendum, Temperature Compensation and TDS Derivation. Anions Negatively charged ions DVM Digital Volt Meter Hysteresis Dead Band —...

  • Page 70: Notes

    X. NOTES...

  • Page 71: Xi. Addendum

    Myron L Company calls “natural water”. These ® b. Tempco Variation are modeled in a mixture called “442™” which the Myron L ® Most conductivity instruments use an approximation of the Company developed and markets for use as a calibration stan- temperature characteristics of solutions, perhaps even assum- dard, as it does standard KCl and NaCl solutions.
  • Page 72 XI. ADDENDUM Continued...
  • Page 73 XI. ADDENDUM Continued...
  • Page 74 XI. ADDENDUM Continued...
  • Page 76 COMPANY ® 2450 Impala Drive Carlsbad, CA 92010-7226 Tel: +1-760-438-2021 Fax: +1-760-931-9189 E-Mail: info@myronl.com techquestions@myronl.com www.myronl.com Made in USA ACCURACY • RELIABILITY • SIMPLICITY Water Quality Instrumentation Accuracy • Reliability • Simplicity © Myron L Company 2017 750IIOM r11-17 ®...

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