Quicktest KEE M-509GM Manual Download Page 2

BEFORE YOU START USING THE TESTER

 

 
You will need a sample of 18ct yellow gold to calibrate the tester. This 
calibration sample must be exactly 18ct. You can use any item with a 
British hallmark or, if you don’t have one, a special 

calibration sample

 is 

available from 

QUICKTEST

. Without the calibration sample the readings 

will not be accurate.  
 
If you wish to test 20ct to 24ct accurately you will also need a sample of 
exactly 22ct.  
 
The probe contains a salt solution, the probe tip can be quite wet when 
new. You might need to dab it on piece of paper towel or tissue 

– so 

have some paper towel or tissue to hand. 
 
 

PREPARING THE SAMPLES 

 
You are going to place the calibration sample (and your test samples) on 
the test plate and then touch the top of the sample with the probe tip.  
 
Is it necessary to clean the side of the sample that is resting on the test 
plate?  If it is covered with a layer of dirt, then yes, otherwise no, there is 
no need to clean it (you may if 

you wish, but it’s not necessary).  

 
The item must make firm contact with the plate, if it does not have a flat 
surface  that  makes  firm  contact,  hold  it  down  with  your  finger.  Coins, 
medallions  or  small  engraved  bars  will  make  better  contact  if  the 

edge

 

(rather than the engraved surface) is resting on the plate.  
 
Is  it  necessary  to  clean  the  side  of  the  sample  that  you  touch  with  the 
probe?    Yes!    This  must  be  clean  and  shiny  because  any  surface 
contamination will lead to inaccurate readings. Use the abrasive tip that is 
built into the protective snap-cap. When you touch it with the end of the 
probe, you need only touch very lightly.  
 

 

 

Summary of Contents for KEE M-509GM

Page 1: ...LECTRONIC GOLD TESTER MODEL M 509GM www quicktest co uk All equipment must be used in conjunction with the user s skill knowledge and experience Under no circumstances shall Quicktest be liable for direct or indirect loss sustained in connection with testing equipment It is your responsibility to regularly check readings against known samples ...

Page 2: ... samples on the test plate and then touch the top of the sample with the probe tip Is it necessary to clean the side of the sample that is resting on the test plate If it is covered with a layer of dirt then yes otherwise no there is no need to clean it you may if you wish but it s not necessary The item must make firm contact with the plate if it does not have a flat surface that makes firm conta...

Page 3: ...use either F Black socket on tester G Abrasive tip H Protective snap cap on probe I Probe tip J Replaceable part of probe K The end of the probe with the red socket L The red socket on the end of the probe M The red plug on the red lead they are both the same N The black plug on the black lead O Crocodile clip ...

Page 4: ...rea Remove the probe tip carry out the test again this time the needle will settle more quickly to be certain it calibrated correctly If you are not certain carry out the test a third time For standard testing of jewellery this method of calibration is accurate enough For testing 20ct to 24ct see TESTING HIGH CARAT ACCURATELY on the next page Now that the tester is calibrated test your unknown sam...

Page 5: ...ld be about 22ct you may wish to know if it is slightly more or slightly less than 22ct Calibrate the tester on your 18ct calibration sample then calibrate it on a 22ct sample You might easily calibrate them both to the middle of the 18ct and 22ct area of the dial or you might have to compromise by setting one or both of the samples fractionally higher or lower This is fiddly but it is the only wa...

Page 6: ...W ON THE DIAL It takes one AA battery Use a good quality alkaline or Lithium battery The outer sleeve is made of a soft rubber it simply pushes off as shown in the photographs below Then remove the two screws open the tester replace the battery ...

Page 7: ...e gets used up you will have to calibrate it more often Eventually you will have to calibrate it every few tests this is a sign that the probe refill will soon need replacing What if the meter doesn t move to the far right upon start up Change the battery What if it won t calibrate to the middle of 18kt First change the battery If that doesn t work change the probe refill Can more than one item be...

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