| Q. |
Why use three probes? |
| A. |
As with any quality control procedure, one is an indication, two is a comparison, and three is a statistically correct result. |
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| Q. |
Can I use only one probe at a time? |
| A. |
Yes, this will usually be done on round columns, but you still need to take an average of 3. |
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| Q. |
Is there more than one power load available? |
| A. |
No, but you can change the power level by pushing the probe and driver head down the barrel. Look in the instruction manual for this procedure. |
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| Q. |
How do you know when to use low Power or Standard Power? |
| A. |
Use low Power for new concrete less than 3200 psi. Standard Power is used for mature (28 days) or for more than 3500 psi. Always change to Low Power if using Standard Power indicates less than 3000 psi. |
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| Q. |
My probes will not stick in the concrete. |
| A. |
You may be hitting aggregate, not enough paste on surface, or driver head is not on probe. |
