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This instrument’s input values of curvature diameter correction coefficients are from 0.700 to
1.100.
5.3.2.7.1 In the normal measurement interface, hand-hold eddy probe from the air (distance
from the specimen of > 5cm) vertically placed on the surface of the tested, when measuring
stable (about 2 seconds), heard "Di" tone, instrument finish the conductivity measurement and
latch measurements value automatically until the next update.
5.3.2.7.2In continuity measurement interface, when the eddy probe near the specimen,
instrument began to continues measuring, and display according to a certain time interval (about
1s) until the probe left specimens, measurement finished and recover showing the value of zero.
No lock date function and save data function.
5.3.3 Calibration
5.3.3.1 Calibration period
a.
Replace the probe, shutdown the instrument after a period of time then open again, the
instrument temperature compensation mode will change (such as automatic compensation
into pseudo temperature compensation), the instrument should be re-calibration.
b.
When the instrument finish the preheating, for a half hour time before the operation,
suggest calibrate once a time every 15 minutes.
c.
Working under the "pseudo temperature compensation mode" , compare to the recent
calibration, if the calibration testing block temperature changes more than ±2
℃
,
proposed to re-calibrate.
5.3.3.2 Quantity of Calibration Block
a.
Using two standard test blocks (high conductivity value σ
H
and low conductivity
values σ
L
) as the calibration for measuring the curve. Each standard block is accompanied
with conductivity value and temperature coefficient numerical. Products manufacturers
have provided and set two original standard test blocks, the users can set up and use
standard test block by your own also (how to set go to see 5.3.4.5 calibration bock setting)
b.
High value σ
H
、
low value σ
L
block selection, suggest conductivity values is falls
within the range of calibration block value as possible, or closed to that of high, low value
standard block.
5.3.3.3 Calibration mode introduction
In the measurement or setting the main interface press the calibration key "CAL" directly, the
screen appears calibrate main interface, shown as below.
