Prostat PRS-812 - Page 19

19
Rev. C / January 2012
PRS-812 Resistance Meter
c.  is displayed in LCD
d. Press  to calibrate instrument to shunt reference
e. Press  to measure shunt resistance of 1.02 ±0.02 ohms (Ω)
f. Press  buon to prepare instrument for the next measurement
g. Repeat calibraon procedure if necessary
h. Remove Calibraon Shunt
5. Carefully connect test leads to posive (+) [Power] and negave (-) [Sensing] terminals. Insert
right angle sleeved banana into instrument terminal, press gently while twisng into posion.
Standard 10-foot test leads are used for general audit measurements, and provides excellent
accuracy up to 1.0x10
12
ohms
6. Connect test leads to electrodes, xture or circuit to be measured
7. Press Green  buon to iniate Automac measurement Test Cycle
a. The resistance range is reset to minimum (0.1Ω). It is automacally adjusted in conjuncon
with the resistance characteriscs of the materials under test, based on:
(1) Test voltage; and,
(2) Current ow.
b. Test Voltage is reset to <10V and automacally increased in accordance with the following
material resistance characteriscs:
(1) <10 Volts: 0.1 to less than 1.0x10
4
ohms (0.1Ω - <10KΩ)
(2) 10 Volts: 1.0x10
4
to less than 1.0x10
6
ohms (10KΩ - < 1MΩ)
(3) 100 Volts: 1.0x10
6
to 2.0x10
14
ohms (1MΩ - 200TΩ)
(4) When  is displayed, it mean that the resistance is greater than 2.0x10
14
ohms
c. Electricaon period, i.e., the me period during which test voltage is applied to the ma-
terial under test, is automacally adjusted to the PRS-812’s measurement characteriscs
and industry standards (ANSI/ESD STM11.11). Typical electricaon periods are:
(1) 2 to 3 Seconds: 0.1 to less than 1.0x10
4
ohms (0.1Ω - <10KΩ)
(2) 2 to 4 Seconds: 1.0x10
4
to less than 1.0x10
6
ohms (10KΩ- < 1MΩ)
(3) 7 to 8 Seconds: 1.0x10
6
to >1.0x10
12
ohms (1MΩ->1TΩ)
(4) 15+ Seconds: 1.0x10
12
to 2.0x10
14
ohms (1TΩ - 200TΩ)