Prostat PFK-100, Руководство пользователя

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17
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
a. Install the analog output cable in the ANALOG OUTPUT jack on the front of the PFM-711A.
b. Connect the analog output cable to an X-Y plo er, or other suitable recording device.
i. The RED output plug is Posi ve (+).
ii. The BLACK output plug is Nega ve (-).
c. Zero the PFM-711A/CPM-720A combina on and X-Y plo er to ground.
d. Start the X-Y plo er and perform the charge/decay procedure, above.
e. At the end of the decay cycle, stop the X-Y plo er.
i. Calculate the decay me indicated on the X-Y plo ers recording chart using 1,000 volts
as me zero (0).
• Locate the point on the chart where the voltage plot line intercepts the 1,000 volt
value.
• Locate the point on the chart where the voltage plot line intercepts the 100 volt
value.
• Based on chart speed, defi ne the me in seconds required to decay from the 1,000
to 100 volt intercepts.
ii. Mul ply the X-Y plo er’s defi ned decay me by two (2) to obtain the decay me from
1,000 to 100 volts so that the value is compa ble with ESD STM3.1-2000 guidelines.
OPERATIONAL NOTE
The capacitance of the CPM-720A plate is 1- pF. Decay mes obtained from
the analog output of the PFM-711A, should be mul plied by 2, in order to be
comparable to decay mes obtained using ANSI/ESD STM3.1 Ioniza on Test method.
ANSI/ESD STM3.1 CPM capacitance is 20pF.
D. Using the PFM-711A/CPM-720A combina on to Measure Body Voltage Genera on related to
Footwear and Flooring combina ons.
1. Mount the CPM-720A Charge Plate Assembly on the PFM-
711A Field Meter case.
2. Ground the case of the PFM-711A, as described below.
a. Using a Prostat® wrist strap cuff , mount the cuff on one
of the fi ve pound NFPA electrodes found in Prostat®
kits.
b. Remove the insulated cap covering the 10 mm male
snap located in the cuff fabric approximately 1.5 inches
from the cuff buckle.