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OPERATION MANUAL

OPERATION INSTRUCTION

PHS-550

High accuracy digital pH meter

1. Unpacking & Accessory

2. Specifications

3. Operation

4. Maintenance and notice

5. Configuration of standard solution

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Summary of Contents for PHS-550

Page 1: ...OPERATION MANUAL OPERATION INSTRUCTION PHS 550 High accuracy digital pH meter 1 Unpacking Accessory 2 Specifications 3 Operation 4 Maintenance and notice 5 Configuration of standard solution ...

Page 2: ...ng Accessories PHS 550 pH Meter 1PC Combination PH electrode 1PC Short circuit plug in the back of Meter 1PC Electrode Stand 1PC Temperature Sensor 1PC 9V Adaptor 1PC Buffer Solution pH4 00 pH6 86 pH 9 18 1PC EACH User Manual 1PC ...

Page 3: ...201 C plastic case PH combination electrode Temperature of solution 5 60 be suitable PH sample standard solution DC9V adapter Working condition z Ambient temperature 0 40 Relative humidity 85 z Power 9V DC power z No significant vibration z No disturbance of magnetic field or distinct tremble around instrument z Input resistance 1 10 12 Ω z Zero drift 0 01pH 1word 2 hours z Solution temperature co...

Page 4: ...e into pH6 86 solution shake it for a while then wait until the number shows on the screen is stable keep pressing the calibration key until the screen show the CAL first 6 86 twinkles few seconds later shows the END then shows the calibrated pH value It indicates that the calibration is completed and stored Please note the final calibrated pH value shows on the screen may be different under diffe...

Page 5: ...on the screen may be different under different temperature For example it will show pH9 18 under 25 and pH9 28 under 15 Details please find it from the last page Solution measurement z Measure the temperature of solution by thermometer then press increase key or decrease key adjust the temperature value clean the pH electrode and immerse it to the tested solution shake it for a while then place un...

Page 6: ...mildew or sediment in the solution please do not use any more z Don t use the standard buffer solution which passed the shelf life don t pour the used standard buffer solution into the standard solution bottle with unused solution z Use the standard buffer solution which approach the pH value of sample if possible when in calibration and the standard solution temperature is better the same with sa...

Page 7: ...e will be decrease a little after long time using please immerse the electrode ball for 24hours into 0 1 mol L HCL solution preparation 9ml HCL diluted to 100ml by Non Ion water Common Problem Checking z Most problems are due to electrode functional problem or wrong measurement not the instrument Besides buffer solution and other factors will lead to some problems please check carefully and find o...

Page 8: ...relation table pH solution Solution value name Temp 0 05mol kg potassium hydrogen phthalate 0 025mol kg phosphate mixture 0 01mol kg borax 0 4 01 6 98 9 46 5 4 00 6 95 9 39 10 4 00 6 92 9 33 15 4 00 6 90 9 28 20 4 00 6 88 9 23 25 4 00 6 86 9 18 30 4 01 6 85 9 14 35 4 02 6 84 9 10 40 4 03 6 84 9 07 45 4 04 6 83 9 04 50 4 06 6 83 9 02 55 4 07 6 83 8 99 60 4 09 6 84 8 97 70 4 12 6 85 8 93 80 4 16 6 8...

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