Myron-l 729II Manuale Utente

INSTALLATION • OPERATION • MAINTENANCEConductivity/TDS Models: 756II, 757II, 758II & 759IIResistivity Models: 751II, 752II, 753II & 754II750

NOTE: 3 1/2 digit LCD may be replaced with either a 3 1/2 or a 4 1/2 digit backlit LCD - available as options. ACCURACYAnalog Models: + 2% of Full Sca

E. SENSORS 1. CONDUCTIVITY/ TDS 750 Series II Conductivity/TDS Monitor/controllers use the CS51LC, CS51 or CS52 Series sensor depending on range.

RANGEResistivity0-20MΩ0-10MΩ†0-5MΩ†0-2MΩ0-1MΩ†0-500KΩ†0-200KΩConductivity0-1 µS*†0-1 ppm*†0-2 µS*†0-2 ppm*†0-5 µS*†0-5 ppm*†0-10 µS†0-10 ppm†0-

A. GENERALThis section provides the recommended procedures for properly installing the 750 Series II Conductivity/Resistivity Monitor/controller, a

4. Slide the enclosure through the panel cutout   untilitsangecontactsthepanel. 5. Insertmountingscrewsthroughtheange mounting

D. SENSOR INSERTION/IMMERSION MOUNTING The Sensor’s mounting orientation must provide a continuous andadequatecirculationowtopreventthetrap

4. Turn the front panel around so that the back side is facing you and set aside for now. 5. Carefully remove front panel, leaving the harness

  d. Install5.49kΩresistoratRED(RD)andthe NEUTRAL (NU) connector locations, as shown in    gureII.E.5. 5. Carefullyreinstal

14 c. Connect to your own alarm or ?Use the following as guidelines. Connector is a standard 2 wire Methode* style connector. Connecto

F. 0-10 VDC RECORDER OUTPUTThe0-10VDCoutputisdesignedtogivetheuserthecapabilityof sending a signal to a remote meter, recorder, PLC or SC

i

16G. RE-RANGE YOUR MONITOR/CONTROLLER (Range Module Installation) 1. DESCRIPTIONThe 750 Series II Monitor/controllers have been design

17 3. CHANGING ANALOG METER SCALE (DIAL)After changing ranges on an analog model 750II it may be nec-essary to change the meter scale (dial). The

18 4. LABEL CHANGESince you have re-ranged your Monitor/controller it may be necessary to relabel it. If you made any one of the following changes

19A. SC/SCO MODULE (SECOND ALARM/CONTROL OPTION) (Digital & OEM Models ONLY)-SC Second Alarm Control Module ordered with

20Front PanelWARNING: There are two (2) O-rings installed on the switches, one (1) on the shank and the other is under the push button. Both of these

The following instructions describe the steps for converting the Monitor/controller.RefertogureIII.A.4forthelocationoftheSPC(s) on your Mon

c. Hysteresis (Dead Band) Adjustment*Thehysteresisordeadbandisapproximately±3%ofthesetpoint at full scale as it leaves the factory. Unde

B. 4A/4AO MODULE (4-20mA OPTION)Available only on the digital models 758II, 759II, 753II and 754II, or all analog and digital OEM Monitor/controlle

24FATAL TO PERSONNEL. ONLY QUALIFIED PERSON-NEL SHOULD INSTALL ELECTRICAL EQUIPMENT.PhysicalIf the front panel has all ready been removed from

25 5. If not, adjust the CAL control marked “4mA” until   theDVMindicates4mA,seegureIII.B.3. 6. PresstheFullScaleTestSwitch,theD

If you read nothing else in this manual please read this Quick Reference Guide. PLEASE READ and COMPREHEND ALL WARNINGS, CAUTIONS and ADVISEMENTS CONT

4. CONVERTING A CURRENT TO A VOLTAGECurrent measuring devices actually measure voltage, but have aninternalresistorasshowni

27C. TEMPERATURE MODULE (Digital Models only)-TP Temperature Module ordered with Monitor/controller.TPO Temperature Module Kit ordere

28 5. Set front panel down or carefully allow to hang from the harness. Do not drop as the harness connector will pull out allowing the fr

29 a. TPC “Calibration” Module ProcedureThis procedure assumes the front panel is removed. 1. Ensure power is OFF. 2. Remove the sensor lead

30 19. Continue or reinstall the front panel and tightly secure four (4) retaining screws, see REASSEMBLY below.*CAUTION:Thesensorinputand0

31 counterclockwise position. If not, turn SCO Set Point control fully CCW - it may be 30 turns - or until it clicks.   Forlocationseeg

32 5. OEM INSTALLATIONa. Single Display ModelsAn OEM installation requires an additional display harness, part number TPMH. This harness is insta

33 6. OEM INSTALLATIONb. Dual Display Models SPECIAL ORDER These models allow simultaneous display of both Cond/TDS, RES or pH/ORP and Temperatur

34D. ALARM/CONTROL KIT (Digital & OEM Models only) -TH Controller wiring Harness (requires second alarm/control module) orde

by pulling lightly on the wires. It may be necessary    touseasmallatscrewdrivertoslightlyspreadthe    retainingring.Seegu

connected to an appropriate Sensor, and that the Sensor is immersed in water within the range that the Monitor/controller will be required to read; an

c. Remove harness from SCO Module by pulling on    harness,seegureIII.D.3. d. Set SCH harness aside, it is no longer used. 4. Re

8. Turn SCO Set Point control fully counter clockwise   —itmaybe30turns-untilitclicks.SeegureIII.D.7 for location. 9. Locate

38Set Point Conversion (SPC) / Reversing Set PointTheMyronLCompanyshipstheTemperaturecontrollercong-ured to Alarm/control when the temperatur

39E. INSTALLATION OF BOTH TEMPERATURE MODULE & 4-20mA OUTPUT MODULE (Digital and OEM Models ONLY) -TP/TPO Temperature Modu

40F. 3 SENSOR INPUT MODULE3SO 3 Sensor Input Module with 3 foot / 1 meter cable ordered separately (customer installed and mounted).3SE

Module to the main Monitor/controller CB at the sensor input location as shown on label. 5. Attach the separate small cable harness from

42  gureIII.F.4.To disable the Sensor alarm/control function completely. 1. Locate the 8 position select switch on the 3S Module. 2. Set all

43G. 3 RANGE SWITCH MODULE 3RO 3 Range Switch Module with 3 foot / 1 meter cable ordered separately (customer installed and mounted).3RE

443ROModuleasanaccessoryyoumayneedtorecongurethe select switch for it to Range properly. 1. Locate the 8 position select switch on the

45H. 3 SENSOR / 3 RANGE MODULE 3SRO 3 Sensor / 3 Range Switch Module with 3 foot / 1 meter cable ordered separately (customer installed and mou

1750 Series IIModel 758 -121-SC(A Digital ConductivityMonitor/controller,with a Range of 0-2000 µS,and a Second Alarm/control,Displaying Full Scale

46Sensor ConnectionsFor convenience, it is recommended you connect the Primary or controlling sensor to SENSOR 1 position as shown in gureIII.H.1.

47For Conductivity/TDS - X1, X10 and X100. For Resistivity - X1, 0.1, and 0.01. If adding an alarm/control range. 1. Locate the 8 position select s

48I. PIEZO ELECTRIC ALARM -PA Piezo Electric Alarm ordered with Digital Monitor/controller.PAO Piezo Electric Alarm ordered separate

49 a. For a Conductivity/TDS Monitor/controller, as shipped from the Myron L Company, the alarm will sound off when the Full Scale Te

50J. REMOTE ALARM - RA™ RA Ordered as an accessory, includes 8” harness with connector, and two (2) wire nuts. 1. DESCRIPTIONThisremote

51 alarm for approximately three minutes or until you improve the water quality (readjust controller set point).   Ifthreeminutesmuting

52IV. OPERATING PROCEDURESA. FRONT PANEL INDICATORS & CONTROLSThe front panel illustrations to the right, switch and indicator operational desc

53B. OEM FRONT PANEL INDICATORS & CONTROLSThe simulated OEM front panel illustrations to the right, and switch and indicator

54C. SETUP PROCEDURES These Setup procedures cover (1) converting the alarm circuit to trigger on a decreasing (conductivity) or increasing (Resist

55CAUTION: adjusting the hysteresis too tight may cause the alarmtouctuate(on-off)duetoow,chemicalmixingorbub-bles causing the relay to ch

TABLE OF CONTENTS 750 Series II ILLUSTRATION (758II-121-SC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

56A. PRIMARY COMPONENT IDENTIFICATIONAsidentiedinSectionIII,theMonitors/controllersswitch(es)and indicator components are mounted directl

57B. METER MECHANICAL ZERO PROCEDURESANALOG METERS ONLY 1. Ensure power is OFF. 2. Note the position of the meter needle. If it has come to

58 3. Slowly shake the sensor to remove air bubbles from inside the sensor bore hole. 4. Allow 5-10 minutes for temperature to equilibrate.

59 4. TRANSFER STANDARD METHODFor maximum accuracy of any Monitor/controller, the transfer standard method should be utilized. Instead of removin

60VI. OPTIONS & ACCESSORIESA. OPTIONS ORDERED WITH MONITOR/CONTROLLERPART # DESCRIPTION -SC Second Alarm/control Module (Monitor/controllers

61C. STANDARD SOLUTIONS & BUFFERS 1. CONDUCTIVITY/TDS STANDARD SOLUTIONSYour Conductivity/TDS Monitor/controller has been factory c

62VII. REPLACEMENT PARTSMODEL DESCRIPTIONELECTRONIC MODULE CONDUCTIVITY756CB...756II Circuit Board Analog Monitor only7

63VII. REPLACEMENT PARTS ContinuedENCLOSURE700II ECP ...750II Rear Housing (Box) for Picture Frame Front Panel700II ECR ...

64VIII. WARRANTYAll Myron L Company Conductivity/TDS and Resistivity Monitor/controllers have a TWO Year Limited Warranty. If any Monitor/controller

65IX. GLOSSARY442™ An Internationally recognized “natural water” standard developed by the Myron L Company in 1964. Algorithm A procedure for solvi

TABLE OF CONTENTS ContinuedSECTION PAGE 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .

66X. NOTES

67XI. ADDENDUMA. CONDUCTIVITY, TDS AND TEMPERATURE RELATIONSHIPS1. TEMPERATURE COMPENSATION (Tempco) of Aqueous SolutionsElectr

68XI. ADDENDUM Continued

69XI. ADDENDUM Continued

70XI. ADDENDUM Continued

Water Quality InstrumentationAccuracy • Reliability • SimplicityMYRON L COMPANY2450 Impala DriveCarlsbad, CA 92010-7226 USATel: +1-760-438-2021Fax: +

TABLE OF CONTENTS 5. Optional Front Panel Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Thank you for selecting one of the Myron L Company’s 750 Series II Monitor/controllers. The 750 Series II is based on input from ‘you’ - our customer