OHAUS ST300-G, ST300-B, ST300 User manual

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STARTER 300 Portable pH Meter Instruction Manual

Manual de instrucciones del pHmetro portátil STARTER 300

STARTER 300 PH-mètre portable

Manuel d’instructions

STARTER 300 Medidor de pH Portátil Manual de Instruções

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TABLE OF CONTENTS

INTRODUCTION...................................................................1

1.1 Definition of Signal Warnings and Symbols ...................................... 1

1.2 Safety Precautions ............................................................................ 2

1.3 Display and controls .......................................................................... 3

2 INSTALLATION.....................................................................5

2.1 Package contents .............................................................................. 5

2.2 Installing the batteries ....................................................................... 6

2.3 Installing the electrode clip ................................................................ 6

2.4 Installing the IP54 seal components ................................................. 6

2.5 Integrated stand for table top use ..................................................... 7

3 STARTER 300 SETUP..........................................................8

3.1 Set temperature unit and MTC value ................................................ 8

3.2 Selecting a predefined buffer group .................................................. 8

4 STARTER 300 OPERATION .................................................9

4.1 Calibration ......................................................................................... 9

4.1.1 Buffer group ................................................................................ 9

4.1.2 Performing 1-point calibration .................................................. 10

4.1.3 Performing 2-point calibration ................................................... 11

4.2 Sample measurement ..................................................................... 12

4.2.1 pH measurement ...................................................................... 12

4.2.2 mV measurement ..................................................................... 12

4.3 Temperature measurement ............................................................. 12

4.4 Using the memory ........................................................................... 12

4.4.1 Storing a reading ...................................................................... 12

4.4.2 Recalling from memory ............................................................ 12

4.4.3 Clearing the memory ................................................................ 12

5 MAINTENANCE..................................................................14

5.1 Error message ................................................................................. 14

5.2 Meter maintenance.......................................................................... 14

5.3 Electrode maintenance ................................................................... 14

5.4 Self-diagnosis .................................................................................. 15

5.5 Recover factory settings .................................................................. 15

6 TECHNICAL DATA.............................................................16

6.1 Specifications ................................................................................ 16

6.2 Compliance ..................................................................................... 16

7 BUFFER GROUP................................................................18

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ST ARTER 300 Portable pH Meter EN-1

General hazard

Explosion hazard

Corrosive hazard

Alternating current

Direct curren t

1 INTRODUCTION

Thank you for choosing OHAUS.

Please read the manual completely before using the STARTER 300 portable pH meter to avoid incorrect operation.

STARTER 300 has an excellent performance/price ratio and is designed with many useful features. Other accessories such as different electrodes for different applicat ions, bottle buffer solutions are also available from OHAUS.

Starter 300 offers many practical features such as:

x Ergonomic, multifunctional design for ambidextrous measurements or table top use x Integrated table top stand for counter use and semi-permanent installations x Integrated labeling design for quick product identification x IP54 protection against dust and water x Ohaus renowned user friendly software

1.1 Definition of Signal Warnings and Symbols

Safety notes are marked with signal words and warning symbols. These show safety issues and warnings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results.

Signal Words WARNING For a hazardous situation with medium risk, possibly resulting in

CAUTION For a hazardous situation with low risk, resulting in damage to the

Attention For important information about the product. Note For us eful information about the product Warning Symbols

injuries or death if not avoided.

device or the property or in loss of data, or injuries if not avoided.

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EN-2 STA RTER 300 Portable pH Meter

1.2 Safety Precautions

CAUTION: Read all safety warnings before installing, making connections, or servicing this

equipment. Failure to comply with these warnings could result in personal injury and/or property damage. Retain all instructions for future reference.

x Use the equipment only in dry locations. x Dry off any liquid spills immediately. The instrument is not watertight. x When using chemicals and solvents, comply with the instructions of the chemical producer

and the general lab safety rules.

x Use only approved accessories and peripherals. x Operate the equipment only under ambient conditions specified in these instructions. x Do not operate the equipment in hazardous or unstable environments. x Service should only be performed by authorized personnel.

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ST ARTER 300 Portable pH Meter EN-3

Electrode condition

and offset: ± (0 Electrode

good

or offset: ± ( Electrode acceptable

or offset: ± (> Electrode

not

good or needs cleaning

Endpoint stability icon

; Auto endpoint icon

Measurement icon - ; measurement or calibration is running

Calibration icon - ; calibration in progress

Setup icon - ; instrument is in the setup mode

Battery status icon shows the condition of the batteries - fully charged, half-charged or fully discharged

pH/mV reading or slope in calibration process

Calibration point / Buffer group /Memory number / Error index

Auto temperature compensation - ATC ; Manual temperature compensation - MTC

Temperature during measurement or offset in calibration process

2 3 4 1 5

8 9 10

1.3 Display and controls

Displays

Slope: more than 95%

-15) mV

condition is

Slope: 90-95%

15-35) mV

condition is

Slope: less than 90%

35) mV

condition is

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EN-4 STARTER 300 Portable pH Meter

Button

Press & release

Press & hold

for 3 seconds

- Start or endpoint measurement

- Confirm setting, store entered

auto endpoint on / off

- Start calibration

- Review the latest calibration

- Meter turn on

to measurement screen

- Store current reading to memory

- Switch between pH and mV

- Scroll down through the memory

Controls

value

Return

Increase value during setting Scroll up through the memory

measuring modes Decrease value during setting

Turn

data (slope, offset)

Meter turn off

Recall stored data

Enter setup mode

Start self-diagnosis

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ST ARTER 300 Portable pH Meter EN-5

Model

Description

P/N

ST310

3-in-1 plastic refillable pH Electrode

83033965

ST210

2-in-1 plastic refillable pH Electrode

83033966

ST320

3-in-1 plastic gel pH Electrode(no need to fill)

83033967

ST230

2-in 1 glass muddy sample pH Electrode

83033968

STORP1

Gel plastic ORP electrode

30038555

STORP2

Refillable glass ORP electrode

30038553

STTEMP30

Temperature Electrode

83033970

Buffer powder set (4.01; 7.00; 10.00)

83033971

Buffer pH1.68 250ml

30100424

Buffer pH4.01 250ml

30100425

Buffer pH7.00 250ml

30100427

Buffer pH10.01 250ml

30100429

Buffer pH12.45 250ml

30100430

Portable Bag for portable meters

30031635

ST300

-B

nits

STARTER 300

AAA battery

Electrode Clip

IP54 seal components

1 set

Wrist Strap

pH Buffer Powder Set (4.01, 7.00, 10.01)

1 set

ST320 3-in-1 gel pH electrode

2 INSTALLATION

Carefully unpack the box.

2.1 Package contents

The ST300-B (basic) package has the following items:

In addition to ST300-B content, the ST300 package also includes the following:

Each pH buffer powder should be dissolved in 250ml pure water or deionized water in volumet ric flask.

Additional Ohaus pH electrodes are available for various applications:

Buffers and Accessories:

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EN-6 STA RTER 300 Portable pH Meter

2.2 Installing the batteries

 Remove the battery cover screw using a coin or screwdriver and remove the battery cover.  Insert the batteries in the battery compartment as shown.  Replace the battery cover and tighten the battery cover screw .

2.3 Installing the electrode clip

The electrode clip is an electrode holder that can be placed on either side of the housing.

 Attach the clip by inserti ng th e tabs into the recess.  Slide the clip forwar d to lock i n position.  Slide the shaft of the sensor into the clip from above.

2.4 Installing the IP54 seal components

Use the small plastic tool as shown to install the seal components:

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STARTER 300 Portable pH Mete r EN-7

2.5 Integrated stand for table top use

STARTER 300 has an integrated table stand as shown, which can be pushed out to use the meter on a lab bench or desk. To close the stand, push the middle edge of the stand toward the meter.

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EN-8 STARTER 300 Portable pH Meter

1.68

4.01

7.00

10.01

3 STARTER 300 SETUP

3.1 Set temperature unit and MTC value

Please note: If a temperature electrode is used, Automatic Temperature Compensation (ATC) and the sample temperature are displayed on the screen. You may then choose to skip MTC setup (below).

If the meter does not detect a temperature electrode or one is not used, the meter automatically switches to Manual Temperature Compensation (MTC) mode and MTC appears on the screen.

MTC can be set as follows:

 Power the meter on by pressing

 Press and hold until the setup icon appears on the display and the current

temperature unit blinks (°C or °F).

 Press  Press

Then

 Continue with MTC temperature setting by using

compensation accordingly

 Press button-  Press

The default MTC temperature value setting is 25 °C (77eF). Note: eC = 5/9 (eF - 32)

or to switch between eC and eF .

to confirm your selection.

or to adjust temperature

to confirm the setting

to return to the measurement screen.

3.2 Selecting a predefined buffer group

After confirming the MTC value (or if you are using ATC) you have the option of making a buffer group selection. In most cases the default buffer group will be used, buffer group b1.

If it is necessary to switch the buffer group, use buttongroup among 4 buffer groups shown in section 4.1.1 in this manual. Press button-

the setting or press button-

The default buffer group is b1.

to return to the mea su r ement screen.

or butt on- to select a buffer

to confirm

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STARTER 300 Portable pH Meter EN-9

1.68

4.01

7.00

10.01

2.00

4.01

7.00

9.21

11.00

1.68

4.00

6.86

9.18

12.46

1.68

4.01

6.86

9.18

4 STARTER 300 OPERATION

The basic procedure for pH measurement is as follows:

a) pH electrode preparation b) buffer preparation and pH electrode calibration c) sample preparation d) pH measurement e) Record measurement results

f) Rinse the pH electrode and store properly For pH electrode preparation: pH electrode should be rinsed with pure water before and after using. Check if the electrode is physically damaged. (Be careful with the glass bulb) The pH electrode should be stored in the included storage bottle; the solution in the bottle is 3M KCl. After placing pH electrode into the sample or buffer solution, carefully stir with the electrode for several seconds then wait 30 to 60 seconds for the signal to be stabilize, and then press the button to operate (Calibration or measurement).

WARNING Do not operate the equipment in hazardous environments. The equipment is not explosion protected.

WARNING When using chemicals and solvents, comply with the instructions of the chemical producer and the general lab safety rules.

STARTER 300 will turn off the power automatically without any press operation after 10 minutes.

4.1 Calibration

4.1.1 Buffer group

STARTER 300 can perform 1-, 2- or 3- point calibrations. There are 4 buffer groups in the meter, you can select the buffer group you prefer (see 4.3), default buffer group is b1 (US standard), and the buffer value will be automatically recognized during calibration. The 4 predefined buffer groups are (at 25°C):

STARTER 300 automatically corrects for the temperature dependence of t he buffer pH values given in the following table - buffer group b1.

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EN-10 STARTER 300 Portable pH Meter

5 °C

1.67

4.01

7.09

10.25

10 °C

1.67

4.00

7.06

10.18

15 °C

1.67

4.00

7.04

10.12

20 °C

1.68

4.00

7.02

10.06

25 °C

1.68

4.01

7.00

10.01

30 °C

1.68

4.01

6.99

9.97

35 °C

1.69

4.02

6.98

9.93

40 °C

1.69

4.03

6.97

9.89

45 °C

1.70

4.05

6.97

9.86

50 °C

1.71

4.06

6.96

9.83

pH electrodes need to be calibrated with pH standard buffer solution before a proper pH measurement can be made. Calibration is to display the correct pH value when meter receives the mV value signal from the pH electrode.

Slope: the linear coefficient between mV and pH according to theoretical value (e.g. -

59.16mV/pH @ 25°C which means 100% slope); Offset: the mV value when pH value is 7.00. (Theoretical value is 0 mV);

4.1.2 Performing 1-point calibration

When performing calibration, Ohaus recommends using Auto End Point Mode. After powering the meter on, be sure the top of the screen shows

Mode.

to ensure the meter is in Au t o E n d p o i n t

Auto or Manual End point Mode:

o Press and hold o When in Manual Mode, to manually reach a pH measurement or calibration value,

you need to press buttonsample reading or calibration value freezes, the display.

o When in Auto End Point Mode, the meter determines when the reading is stable

then displays and locks the reading or calibration value automatically, the reading freezes and the display.

o Please note stability criterion : the signal of the sensor input may not change by

more than 0.1mV in 6 seconds.

Note: With the 1-point calibration only the offset is adjusted. If the sensor was previously calibrated with multi-point calibration the previously stored slope will remain. Otherwise theoretical 100% slope (-59.16 mV / pH) will be used.

to change the End Point Mode.

when reading is stable and displays : then the

blinks 3 times and freezes on

blinks 3 times then disappears; blinks 3 times and freezes on

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STARTER 300 Portable pH Meter EN-11

When STARTER 300 is in pH measurement mode (see 4.2) and Auto End point Mode.; place the pH electrode in your chosen calibration buffer, stir for 10 seconds, and wait 30-60 seconds, then:

 Press button-

and appear on the top of the screen, is blinking during calibration.

 The meter reaches the calibration (e.g. 7.00) value with the temperature display on the

screen.

The 1-point calibration is finished. There are now 3 options (OHAUS recommends conducting at least a 2 point calibration);

1. Press buttonslope are shown on the display for 3 seconds then return to the measurement screen.

2. Press buttonmeasurement screen.

3. Rinse pH electrode then put into another buffer , press buttonpoint calibration.(see 4.1.3)

. “Cal 1” displays on the bottom left of the screen and “Cal ” is blinking.

to store the 1-point calibration and exit, the offset and the

to reject the calibration, the meter then returns to the

to do the 2-

4.1.3 Performing 2-point calibration

 Perform 1-point calibration as described above.  Rinse the pH electrode with pure water.

 Place the electrode in the next calibration buffer, stir and wait, then press button-

2” displays on the bottom left of the screen and “Cal ” is blinking.

top of the screen,

 The meter reaches the calibration (e.g. 4.01) with the temperature display on the screen.

The 2 point calibration is finished. There are now 3 options :

is blinking during calibration.

and appear on the

, “Cal

1. Press button-

2. Press buttonmeasurement screen.

3. Press buttonslope are shown on the display for 3 seconds then return to the measurement screen.

Note: To perform a 3 point calibration, follow the instructions for performing a 2 point calibration using a third buffer.

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to do the 3-point calibration.

to reject the calibration, the meter then returns to the

to store the 2-point calibration and exit, the offset and the

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EN-12 STARTER 300 Portable pH Meter

4.2 Sample measurement

4.2.1 pH measurement

 Place the electrode in the sample, stir for 10 seconds, and wait 30-60 seconds.  Press button-

during measurement.

 When meter reaches the proper value, t he pH value with the t emperature is displayed on t he

screen.

to start the pH measurement, appears on the display. is blinking

4.2.2 mV measurement

 Press button- to switch between pH and mV measurement.  Follow the same procedure as for pH measurement to perform a mV measurement.

4.3 Temperature measurement

For better accuracy, we recommend to use either a built-in or a separate temperature electrode.

 If a temperature electrode is used, ATC and the sam ple temperature are displayed.  If the meter does not detect a temperature electrode, it automatically switches to the manual

temperature compensation mode and MTC appears. MTC temperature should be set. (See section 3.1 in this manual)

Note: STARTER 300 accepts NTC 30 kΩ temperature sensor.

4.4 Using the memory

4.4.1 Storing a reading

The STARTER 300 can store up to 30 results.

 Press button-

result has been stored.

when the measurement reaches its final reading, M01 indi cat es that one

If you press buttonstore further data you will have to clear the memory. (See 4.4.3 below)

when M30 is displayed, FUL displays to indicate the memory is full. To

4.4.2 Recalling from memory

 Press and hold button- to recall the stored values from memory when the current

measurement reaches its final reading and freezing.

 Press button-

which result is being displayed. Press button-

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or button- to scroll through the stored results. R01 to R30 indicates

to exit.

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STARTER 300 Portable pH Meter EN-13

4.4.3 Clearing the memory

 Pressing button- or button- to scroll through the stored results until “MRCL”

appears.

 Press button-  There are now two choices:

 Press button-  Press button-

, CLr blinks;

to confirm the deletion of all the stored data. to return to the measurement mode witho u t deleting the memory.

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EN-14 STARTER 300 Portable pH Meter

Error 0

Memory access error

Reset to factory se tti n gs

Error 1

Self-diagnosis failed

Repeat the self-diagnosis procedure and make sure that you finish pressing all five keys within two minutes.

Error 2

Measured values out of range

Check if the electrode is properly connected and placed in the sample solution.

Error 3

Measured buffer temperature out of range (

°C)

Keep the pH buffer temperature within the range for calibration

Error 4

Offset out of range offset > 60mV or

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 the buffer has not been used more than once.

Error 9

The current data set has already been stored once

An endpoint reading can only be stored once. Perform a new measurement to store.

5 MAINTENANCE

5.1 Error message

<5 or >40

< - 60 mV

For further technical support please contact Ohaus. (US please contact 1 -800-672-7722)

5.2 Meter maintenance

Never unscrew the two halves of the housing! The STARTER 300 series instruments do not require any maintenance other than replacement of depleted batteries. To clean, use a damp cloth. The housing is made of acrylonitrile butadiene styrene (ABS). This material is susceptible to damage by some organic solvents, such as toluene, xylene and methyl ethyl ketone (MEK). Any spillage should be immediately wiped off.

5.3 Electrode maintenance

Make sure the electrode is filled with electrolyte solution. Always store the electrode according to the electrode instruction manuals and do not allow it to dry out.

If the electrode response becomes sluggish or the slope is not acceptable, try the following:

o Soak the electrode in 0.1M HCl for at least 8 hours. o For fat or oil contaminant, degrease the membrane with cotton wool soaked in either

acetone or a soap solution. After electrode treatment, a new calibration should be performed. If the electrode slope is still not acceptable, the electrode might need to be replaced.

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STARTER 300 Portable pH Meter EN-15

5.4 Self-diagnosis

 Press and hold and simultaneously until the meter displays the full screen. Each

icon blinks one after the other. This checks whether all icons are correctly shown. The next step is to check that the keys are functioning correctly. This requires user interaction.

When b

blinks, five icons are displayed.

 Press the five keys in any order. Each time you press a k ey an icon disappears from the

screen, continue to press the other keys until all the icons have disappeared.

When the self-diagnosis has been completed successfully, PAS appears. If self-diagnosis fails, error message Err 1 appears. In this case, repeat the self-diagnosis.

Note: You have to finish pressing all five keys within 2 minutes, otherwise Err 1 appears and you will have to repeat the procedure.

5.5 Recover factory settings

 When the meter is off, press and hold & & together for 3 seconds, the

screen displays “RST” and blinks, press

offset, etc.).  Press

to switch off the meter.

to reset factory settings (MTC, slope and

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EN-16 STARTER 300 Portable pH Meter

Model

ST300

Measuring range

0.00…14.00 pH – 0 °C…1

Resolution

0.01 pH 1 mV

0.1 °C

Error limits

± 0.01 pH ± 1 mV ± 0.5 °C

Calibration

3 points 4 predefined buffer groups

Memory

30 measurements Current calibration

Power supply

4 x AAA (LR03) batteries > 500 operating hours

Size/weight

90 W x 150 D x 35 H mm / 0.18 kg (without batteries)

Display

Liquid crystal

Input

BNC, impedance > 10e+12 Ω Cinch, NTC 30 kΩ

Temperature-compensation

ATC & MTC

IP protection

IP54

Housing

ABS

6 TECHNICAL DATA

6.1 Specifications

Ambient conditions

x Altitude: Up to 2000 m x Specified Temperature range: 5°C to 40°C x Humidity: maximum relative humidity 80 % for temperatures up to 30°C decreasing linearly to

50% relative humidity at 40°C

x Installation category: N/A x Pollution degree: N/A x Operability is assured at ambient temperatures between 5°C to 40°C

1999…1999 mV

00 °C

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STARTER 300 Portable pH Meter EN-17

6.2 Compliance

This product conforms to the EMC Directive 2004/108/EC and the Low Voltage Directive 2006/95/EC.

In conformance with the European Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements. Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment. If you have any questions, please contact the responsible authority or the distributor from which you purchased this device. Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related. Thank you for your contribution to environmental protection.

FCC Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

ISO 9001 Registration

In 1994, OHAUS Corporation, USA, was awarded a certificate of registration to ISO 9001 by Bureau Veritus Quality International (BVQI), confirming that the OHAUS quality management system is compliant with the ISO 9001 standards requirements. On June 21, 2012, OHAUS Corporation, USA, was re-registered to the ISO 9001:2008 standard.

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EN-18 STARTER 300 Portable pH Meter

7 BUFFER GROUP

STARTER 300 automatically corrects for the temperature dependence of the buffer group pH value given in the following tables (b2, b3, b4), you can find b1 in 3.1.1.

Buffer group b2 Europe standard Tempć pH2.00 pH4.01 pH7.00 pH9.21 pH11.00 5 2.02 4.01 7.09 9.45 11.72 10 2.01 4.00 7.06 9.38 11.54 15 2.00 4.00 7.04 9.32 11.36 20 2.00 4.00 7.02 9.26 11.18

25 2.00 4.01 7.00 9.21 11.00

30 1.99 4.01 6.99 9.16 10.82 35 1.99 4.02 6.98 9.11 10.64 40 1.98 4.03 6.97 9.06 10.46 45 1.98 4.04 6.97 9.03 10.28 50 1.98 4.06 6.97 8.99 10.10

Buffer group b3 JJG119 Tempć pH1.68 pH4.00 pH6.86 pH9.18 pH12.46 5 1.67 4.00 6.95 9.39 13.21 10 1.67 4.00 6.92 9.33 13.01 15 1.67 4.00 6.90 9.28 12.82 20 1.68 4.00 6.88 9.23 12.64

25 1.68 4.00 6.86 9.18 12.46

30 1.68 4.01 6.85 9.14 12.29 35 1.69 4.02 6.84 9.11 12.13 40 1.69 4.03 6.84 9.07 11.98 45 1.70 4.04 6.83 9.04 11.83 50 1.71 4.06 6.83 9.02 11.70

Buffer group b4 JIS Z 8802 Tempć pH1.68 pH4.01 pH6.86 pH9.18 5 1.67 4.00 6.95 9.40 10 1.67 4.00 6.92 9.33 15 1.67 4.00 6.90 9.28 20 1.68 4.00 6.88 9.23

25 1.68 4.01 6.86 9.18

30 1.68 4.02 6.85 9.14 35 1.69 4.02 6.84 9.10 40 1.69 4.04 6.84 9.07 45 1.70 4.05 6.83 9.04 50 1.70 4.06 6.83 9.01

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ST ARTER 300 Portable pH Meter EN-19

Ohaus products are warranted against defects in materials and workmanship from the date of delivery through the duration of the warranty period. During the warrant y period Ohaus will repair, or, at its option, replace any component(s) that proves to be defective at no charge, provided that the product is returned, freight prepaid, to Ohaus. This warranty does not apply if the product has been damaged by accident or misuse, exposed to radioactive or corrosive materials, has foreign material penetrating to the inside of the product, or as a result of service or modification by other than Ohaus. In lieu of a properly returned warranty registration card, the warranty period shall begin on the dat e of shipment t o the authorized dealer. No other express or implied warranty is given by Ohaus Corporation. Ohaus Corporation shall not be liable for any consequential damages. As warranty legislation differs from state to state and country to country, please contact Ohaus or your local Ohaus dealer for further details.

LIMITED WARRANTY

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