OHAUS STARTER 2100 Service Manual Download

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SERVICE MANUAL

  STARTER 2100 Bench pH Meter
  STARTER 3100 Bench pH Meter
  STARTER 3100C Bench pH Meter

STARTER 3100M Bench pH and Conductivity Meter

Ohaus Corporation, 7 Campus Drive, Suite 310, Parsippany, NJ 07054 (973) 377-9000

Summary of Contents for STARTER 2100

Page 1: ...NUAL STARTER 2100 Bench pH Meter STARTER 3100 Bench pH Meter STARTER 3100C Bench pH Meter STARTER 3100M Bench pH and Conductivity Meter Ohaus Corporation 7 Campus Drive Suite 310 Parsippany NJ 07054 973 377 9000 ...

Page 2: ... contained in this manual is believed to be accurate at the time of publication but Ohaus Corporation assumes no liability arising from the use or misuse of this material Reproduction of this material is strictly prohibited Material in this manual is subject to change Copyright 2016 Ohaus Corporation all rights reserved Registered trademark of Ohaus Corporation ...

Page 3: ...ER 2 MAINTENANCE PROCEDURES 2 1 Preventive Maintenance 2 1 2 2 Service Strategy 2 1 2 3 Opening the Meter 2 1 2 2 1 Separating the Top and Bottom Housings 2 1 2 4 Removing Replacing the Main Printed Circuit Board PCB 2 2 CHAPTER 3 RESET TO FACTORY SETTINGS 3 1 Recover Factory Settings 3 1 CHAPTER 4 DRAWINGS AND PARTS LISTS 4 1 Starter 2100 Scale Housing Internal Parts 4 2 4 2 Starter 3100 Scale Ho...

Page 4: ...com LIST OF ILLUSTRATIONS FIGURE NO TITLE 1 1 Starter 2100 Display 1 3 1 2 Starter 3100 Display 1 5 1 3 Starter 3100C Display 1 7 2 1 Screws securing Top Housing 2 1 2 2 Main Printed Curcuit Board 2 2 4 1 Housing Internal Parts 4 2 4 2 Housing Internal Parts 4 3 4 3 Housing Internal Parts 4 4 ...

Page 5: ...cedures Chapter 3 Reset to factory settings Explains procedures for resetting the meter to factory default settings Chapter 4 Drawings and Parts Lists Contains exploded views of the products identifying all serviceable components Note Content in this manual are subject to changes without notice 1 2 DEFINITION OF SIGNAL WORDS AND SYMBOLS Safety notes are marked with signal words and warning symbols...

Page 6: ...o service a meter the service area should meet the following requirements Should be temperature controlled and meet meter specifications for temperature environmental requirements Area must be clean and free of excessive dust Work surface must be stable and level Meter must not be exposed to direct sunlight or radiating heat sources Use an approved Electro Static Device 1 5 TOOLS AND TEST EQUIPMEN...

Page 7: ...www ohaus com 1 6 SPECIFICATIONS Complete specifications for the Ohaus Starter Bench meters are listed in Table 1 1 When a meter has been serviced it must meet the specifications listed in the table Before servicing the meter determine what specifications are not met TABLE 1 1 SPECIFICATIONS ...

Page 8: ... 01 μS cm Auto range TDS 0 01 mg L Auto range Resistivity 0 01 Ω cm Auto range Salinity 0 01 psu Temperature 0 1 C Error Limits Accuracy pH 0 01 pH mV 1mV Conductivity etc 0 5 F S Temperature 0 3 C Calibration pH Up to 3 point 6 buffer groups Conductivity 5 predefined conductivity standard points Memory 99 sets pH and 99 sets conductivity data last calibration data Power Battery AC Adapter Input 1...

Page 9: ...ation www ohaus com Spec ST3100M Input pH BNC impedance 10e 12 Ω Conductivity Mini Din Temperature Cinch NTC 30 kΩ Data RS232 Temp Compensation ATC or MTC Temp Compensation Range pH 0 C 100 C for pH Conductivity Temperature Coefficient range 0 00 C 10 00 C Ref T 20 or 25 C Housing ABS ...

Page 10: ...e than 95 and offset 0 15 mV Electrode condition is good Slope 90 95 or offset 15 35 mV Electrode condition is acceptable Slope less than 90 or offset 35 60 mV Electrode condition is not good or needs cleaning 2 Measurement icon measurement or calibration is running 3 Calibration icon Cal 1 point or 2 point calibration in progress 4 pH mV reading or slope in calibration 5 Error message Err 6 Auto ...

Page 11: ...CHAPTER 1 GETTING STARTED Starter Series Bench Meter Service Manual 1 7 Ohaus Corporation www ohaus com ...

Page 12: ...oration www ohaus com 1 8 Starter Series Bench Meter Service Manual 1 8 METER OPERATION ST3100 This section contains information on the basic operation of the ST3100 meter 1 8 1 OVERVIEW OF THE CONTROLS Displays Figure 1 2 ST3100 display ...

Page 13: ...CHAPTER 1 GETTING STARTED Starter Series Bench Meter Service Manual 1 9 Ohaus Corporation www ohaus com TABLE 1 3 Control functions ST3100 ...

Page 14: ...on www ohaus com 1 10 Starter Series Bench Meter Service Manual 1 9 METER OPERATION ST3100C This section contains information on the basic operation of the Starter 3100C meter 1 9 1 OVERVIEW OF THE CONTROLS Displays Figure 1 3 ST3100C display ...

Page 15: ...CHAPTER 1 GETTING STARTED Starter Series Bench Meter Service Manual 1 11 Ohaus Corporation www ohaus com TABLE 1 4 Control functions ST3100C ...

Page 16: ...n is not good or needs cleaning 2 Endpoint stability icon Auto endpoint icon 3 Measurement icon means measurement or calibration is running when blinks 4 Calibration icon means calibration in progress when display 5 Setup icon instrument is in the setup mode can set temperature MTC buffer group etc 6 pH mV reading or slope of pH electrode calibration or Conductivity TDS Salinity Resistivity value ...

Page 17: ...sh measurement Confirm setting store entered value Turn auto endpoint on off Start calibration Recall the latest calibration data slope and offset Meter turn on Exit and return to measurement screen Meter turn off Store current reading to memory Increase value during setting Scroll up through the memory Recall stored data Print current memory data Switch between pH and mV Decrease value during set...

Page 18: ... Printed Circuit Board PCB For an illustrated list of replaceable parts see Chapter 4 2 3 OPENING THE METER Use these procedures in order to replace the Printed Circuit Board and the cables if applicable 2 3 1 Separating the Top and Bottom Housings Common hand tools are sufficient to disassemble the products Turn the meter off and unplug the power cord before you begin 1 Turn the meter over Remove...

Page 19: ...e control button cable connector in order to isolate the top housing away from the bottom housing 3 Remove the four screws that secure the PCB to the bottom housing Fig 2 2 4 Lift out the PCB 5 Position the replacement PCB 6 Re connect the Top housing Cable to the PCB in the same position as originally installed 7 Insert and tighten the screws that secure the PCB to the bottom housing CAUTION Obse...

Page 20: ...tings When the meter is off press and hold button Read button Cal button Exit together for 3 seconds the screen displays and blinks means Reset Then we have 2 choice Press button Read to reset factory settings MTC slope and offset etc display then restart the meter Or press button Exit to quit the setting display then turn off the meter ...

Page 21: ...ORY SETTINGS Ohaus Corporation www ohaus com 3 2 Starter Series Bench Meter Service Manual 3 2 Error message 3 2 1 Error message ST2100 3 2 2 Error message ST3100 TABLE 3 1 ST2100 Error Message TABLE 3 2 ST3100 Error Message ...

Page 22: ...CHAPTER 3 RESET TO FACTORY SETTINGS Starter Series Bench Meter Service Manual 3 3 Ohaus Corporation www ohaus com 3 2 3 Error message ST3100C TABLE 3 3 ST3100C Error Message ...

Page 23: ...ge 5 or 40 C Keep the pH buffer temperature within the range for calibration Error 4 Offset out of range offset 60mV or 60 mV Make sure the pH buffer is correct and fresh Clean or replace the pH electrode Error 5 Slope out of range Make sure the buffer is correct and fresh Clean or replace the pH electrode Error 6 Meter cannot recognize the buffer Make sure the buffer is correct and fresh check if...

Page 24: ... if the electrode is properly connected and placed in the sample solution Error 3 Measured standard temperature out of range 5 35 C Keep the standard temperature within the range for calibration Error 4 Measuring temperature out of range 0 100 C Check if the electrode is properly connected and keep the sample temperature within the range Error 9 The current data set has already been stored once An...

Page 25: ...ifications in this manual Step to confirm the meter operates within specification 1 Obtain a known good working condition electrode and buffer solution in hand 2 Link the electrode to the portable meter perform a calibration after completed the calibration do a measurement and compare with the meter specification If further technical information is needed please contact your local Ohaus distributo...

Page 26: ...nch Meter PARTS Figure 4 1 Starter Series Bench Meter Parts TABLE 4 1 Starter Series Bench Meter PARTS Drawing Item Description 1 Acc In use cover 2 SP Overlay EN ZH 3 SP PCBA 4 SP Screw and feet set for Starter Bench 5 Acc Electrode holder stand alone Note For parts numbers see your local Ohaus distributor or visit www ohaus com ...

Page 27: ......

Page 28: ... 30332138B P N 30332138B SERVICE MANUAL Starter Bench Top Series ...

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