Prostat PRS-801, Руководство пользователя

Страница: 20 / 40

20 Rev. C / January 2012
PRS-812 Resistance Meter
8. When the PRS-812 displays and holds the final resistance measurement, HOLD is indicated in
the lower, right corner of the LCD.
The PRS-812 is processor controlled to obtain hundreds of measurements per second, and
to make rapid adjustments in resistance range and test voltage as necessary. It will display
the resistance measurement of the material under test based on the following criteria:
a. A digital numeric display is the averaged result of eight (8) individual, consecutive
measurements, each within ±5% of each other.
b. The display is continuously recalculated and updated during the measurement’s elec-
trification period.
c. The final displayed measurement is the averaged result of the last eight (8) individual,
consecutive measurements, each within ±5%, at the end of the electrification period.
d. If the material or test conditions vary such that eight consecutive measurements, each
within ±5% of each other cannot be obtained, the PRS-812 will extend the electrifica-
tion period until the measurement criteria are met; or,
e. The electrification period will automatically be terminated and the most recent aver-
aged result of eight (8) individual, consecutive measurements will be displayed and
held. NOTE: Several material measurements that vary greater than 15 to 20 percent of
each other typically indicate inconsistencies in the material or test conditions.
f. In rare cases, when a stable measurement cannot be obtained the display will reset.
NOTE: When several “held” measurements vary greater than 15 to 20 percent of each
other this typically indicates inconsistencies in the material or test conditions.
9. To save the displayed measurement in the Memory Register and prepare the PRS-812 for the
next measurement, press the Yellow RESET button. Pressing RESET causes three functions:
a. Enters (saves) last measurement into Memory Register
NOTE
REC must be displayed in the lower, left corner of the LCD in order to enter the
measurement in the Memory Register. If REC is not displayed, press RECORD/
RECALL once, then press RESET to save the data.
b. Increases LCD displayed number of data points in the Memory Register ( MEM ) by one, e.g.,
MEM 02
c. Returns the PRS-812 to its last function mode in preparation for the next measurement
10. To make several measurements, simply press TEST to obtain the next measurement, and then
RESET to save it. Repeat the TEST and RESET process for each measurement.