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7. TAKING CARE of your Gold Karat Tester

The Gold Karat Tester should be handled with care. 

Always cover it or place it securely in its custom carrying 

case when the device is not in use. Caution should be 

taken so as not to damage the device. 

Always exercise good practical common sense and ensure 

to read this User Handbook for caution and tips on how best 

to use this device.

The Gold Karat Tester device is a product of extensive 

design and craftsmanship. Please treat it with care.

GENERAL CARE NOTICE 

•  Keep  the  tester  dry.  Precipitation,  humidity,  and  all 

types of liquids or moisture can contain minerals that 

will corrode electronic circuits. If your tester does get 

wet, remove the battery, and allow the tester to dry 

completely before replacing it. 

•  Do  not  use  or  store  the  tester  in  dusty,  dirty  areas. 

Its moving parts and electronic components can be 

damaged.

•  Do not store the tester in hot areas. High temperatures 

can shorten the life of electronic devices, damage 

batteries, and warp or melt certain plastics

•  Do not store the tester in cold areas. When the tester 

returns to its normal temperature, moisture can form 

inside the device and damage electronic circuit boards.

•  Do  not  attempt  to  open  the  tester  other  than  as 

instructed in this handbook

•  Do  not  drop,  knock,  or  shake  the  tester.  Rough 

handling  can  break  internal  circuit  boards  and  fine 

mechanics.

•  Do  not  use  harsh  chemicals,  cleaning  solvents,  or 

strong detergents to clean the tester.

•  Do not paint the tester. Paint can clog the moving parts 

and prevent proper operation. 

•  If the tester is not working properly, kindly contact our 

Customer Service at 

[email protected] 

Thank you for going through the user handbook and 

understand the device before using it.

Presidium also recommends that you register your 

warranty by sending the provided warranty registration 

card to us or by registering online at 

http://www.presidium.com.sg/

Summary of Contents for Gold Karat Tester

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Page 3: ...d Karat Tester pg 21 i Using the Testing Clip pg 22 ii Using of Non conductive and pg 24 conductive plates of Testing Platform 4 REFILLING your Gold Karat Tester pg 25 5 PURGING your Gold Karat Tester...

Page 4: ......

Page 5: ...efill progress bar pg 32 does not move ii Motor in probe pen is moving but probe pg 32 pen is not collecting the testing liquid in the petri dish or is not being refilled iii Pressing dispenser button...

Page 6: ...s licensors distributors reseller servant and or agent be liable for any direct or indirect damages resulting from the use of this tester TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW under no cir...

Page 7: ...cturers You should always check the karat stamp if available on the gold sample you are testing so you can compare it to the results from the PKT You should also evaluate the color of the metal feel t...

Page 8: ...amounts prepared and prescribed for the PKT When working with the PKT provide good ventilation in the process area to prevent formation of vapour Do not breathe mist vapours or spray from the testing...

Page 9: ...about how to use your gold testing device accurately and take care of it in line with its requirements Please read these instructions carefully and keep them handy for future reference This book also...

Page 10: ...an also identify platinum and detect non gold metals The Presidium Gold Karat Tester PKT features the following Able to identify the karat of Yellow gold 8k to 24k White gold 8k to 24k Identifies plat...

Page 11: ...atform with conductive a and non conductive b plates 7 In built Calibration Disc 14K 8 Testing clip to secure and ensure connectivity to jewelry on platform 9 USB Inlet 10 Display Screen with OLED Ill...

Page 12: ...ries in the battery compartment as the batteries may corrode or leak and damage the circuitry of tester Batteries should be removed when the device is expected to be stored for an extended period of t...

Page 13: ...r when the navigation arrow on screen points to the function For each function instructions will appear on screen to guide you through the process The PKT is pre set to test for Yellow Gold If you wis...

Page 14: ...the tester is being used for the first time you will need to fill the probe with 1 vial of the provided testing liquid d Ensure the testing platform and testing clip are clean and free of liquids bod...

Page 15: ...pen and the back of the tester unit making sure they point towards each other ii Powering up the device You may choose to power the device on 4 AAA batteries alkaline batteries are recommended or by...

Page 16: ...e ensure you open 1 sealed vial of the provided testing liquid and have the provided petri dish prepared You should always only use the Presidium Gold Karat testing liquid provided to you in sealed vi...

Page 17: ...o use all of the testing liquid and do not pour the liquid back into the vial at any time Fig 1 3 2 Fill Refill Step 2 Fig 1 3 3a Fill Refill Step 3 Fig 1 3 3b Fill Refill Step 3 Place nozzle halfway...

Page 18: ...serve the liquid being collected into the probe pen Once done at 100 there will be a prompt to purge any existing air bubbles inside the probe pen To do so turn the probe pen so that the nozzle faces...

Page 19: ...p of liquid emerges Fig 1 3 6b Fig 1 3 6b Replace the probe tip back on the device by gently twisting it back on being careful not to touch the nozzle You are now ready to use your Presidium Gold Kara...

Page 20: ...ed to calibrate when you switch on the tester Fig 2 1 Hold the probe pen against the in built Calibration Disc found on the tester unit Press the dispenser button on the probe pen Fig 2 2 Liquid will...

Page 21: ...m the calibration procedure periodically especially during an extended period of testing It is advisable to calibrate when any of the below situations arise I You have repeatedly obtained an inaccurat...

Page 22: ...press on the dispenser button You need to hold the tester in an upright position and ensure the testing sample is properly secured while testing During testing the display screen will also display me...

Page 23: ...Ready mode with the last test result still displayed at the bottom right corner Fig 3 1d Hold the probe pen against the next test item and press the dispenser button to start the next test Refer to Se...

Page 24: ...Hold the probe pen with the probe tip against the area of gold on the item ensuring full contact before pressing the dispenser button Fig 3 2b Fig 3 2b Testing with the item secured by the testing cl...

Page 25: ...me time is recommended when testing on a gold item that is very small or thin with thickness of less than 2 5mm This helps to prevent the testing liquid from accidentally shorting the gold item to the...

Page 26: ...Refill and follow the instructions as they appear on screen There are a total of 8 steps to complete the refill You may also refer to the Getting Started with your Gold Karat Tester section found earl...

Page 27: ...t Settings Calibrate Refill Purge You are advised to perform purging on your device in these situations a After each refill b If you see visible air bubbles trapped inside through the window on the pr...

Page 28: ...Karat Tester to avoid unnecessary errors This includes following the Getting Started procedure closely ensuring the tester including the probe pen and testing platform are clean and free of other liq...

Page 29: ...gold sample jewelry Uneven rough surface of gold sample jewelry such that contact is not fully made between the probe pen and the gold Suggested solutions Hold the probe pen against the gold sample a...

Page 30: ...e non conductive plate without any part of the sample touching the conductive plate Suggested solutions Ensure the probe pen is filled with testing liquid before doing testing Perform the Purge functi...

Page 31: ...to the color of the test sample has been selected and set Remove the worn probe tip and replacing it with a new one It is recommended to change the probe tip if calibration errors are persistent and o...

Page 32: ...tip and replacing it with a new one It is recommended to change the probe tip if calibration errors are persistent and or incorrect reading of calibration disc occurs more than 3 times ii Connection...

Page 33: ...on following the guidance arrows on both the tester unit and the probe pen ii Motor in probe pen is moving but probe pen is not collecting the testing liquid in the petri dish or is not being refilled...

Page 34: ...utton on probe pen is faulty or damaged Motor inside the probe pen is not functioning well Suggested solutions Make sure probe pen and tester unit are connected properly Ensure the connector wire is p...

Page 35: ...ts can be damaged Do not store the tester in hot areas High temperatures can shorten the life of electronic devices damage batteries and warp or melt certain plastics Do not store the tester in cold a...

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