OHAUS ST3100M Service Manual Download Page 9 | Manualshive

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CHAPTER 1 GETTING STARTED

Starter Series Bench Meter Service Manual

1-5

Ohaus Corporation 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

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Summary of Contents for ST3100M

Page 1: ...UAL 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 97...

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...

Page 3: ...R 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 Ci...

Page 4: ...om 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...

Page 5: ...edures 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 identifyin...

Page 6: ...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 an...

Page 7: ...ww 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 Be...

Page 8: ...01 S cm Auto range TDS 0 01 mg L Auto range Resistivity 0 01 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 Calib...

Page 9: ...ration www ohaus com Spec ST3100M Input pH BNC impedance 10e 12 Conductivity Mini Din Temperature Cinch NTC 30 k Data RS232 Temp Compensation ATC or MTC Temp Compensation Range pH 0 C 100 C for pH Con...

Page 10: ...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...

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

Page 12: ...ration 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 CONTROL...

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: ...n 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 CON...

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: ...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...

Page 17: ...h 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 Me...

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 applicab...

Page 19: ...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 Positio...

Page 20: ...ings 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...

Page 21: ...RY 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...

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: ...e 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 electr...

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...

Page 25: ...fications 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 mete...

Page 26: ...ch 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 f...

Page 27: ......

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

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