PS-2111
Page 3 of 7
C. Test Button:
This red button
activates electrical power to the Meter.
The exponent or power of the number is
displayed immediately with LED
illuminating number. If "8" is
illuminated, the measurement is in the
10
8
or 10E8 ohm range. To make a
measurement in accordance with ESD
S4.1, the button is to be depressed for
10-20 seconds for the unit to make
numerous readings and calculations.
(Testing in accordance with ESD S4.1-
1997 requires 15 seconds of
electrification; in contrast, most analog
type meters display measurements
instantaneously.) The LCD will display
temperature (F), then temperature (C),
then relative humidity, and then the
surface resistance mantissa. For
example, if the LCD displays a mantissa
of "7.14", and "8" is illuminates by its
LED, the measurement is 7.14 x 10E8
ohms or 714,000,000 ohms.
During the entire period, surface
resistance exponent will be displayed by
LED illuminating number.
D. Override Test Range Voltage
Button:
When in the “up” position,
during resistance portion of test, Meter
will automatically switch to the correct
voltage for the resistance range. LED
will illuminate noting selected voltage.
Conductive material 10E5 ohms or less
should be measured at 10 volts.
Dissipative material 10E6 or greater
ohms should be tested at 100 volts. The
button is a switch, which if depressed
will override automatic voltage
selection and test will be performed at
10 volts regardless of resistance level.
E. Jacks:
One end of Test Leads has
3.5mm plug (fits Meter left jack). The
3.5mm plug is shielded (identified by
insulated tip and barrel black lead) - see
RTG test procedure: Per ESD S4.1 "The
sensing lead of the resistance meter
shall be connected to groundable point."
One end of Test Lead has standard
banana plug (fits 5# Electrode jack).
F. AA Battery Compartment.
G. Resistivity Parallel Attachment
with Electrodes.
(optional Item number
41292)
Cleaning
Per ANSI/ESD S4.1 "Clean the
electrodes with a minimum 70%
isopropanol-water solution." Make sure
conductive pads are dry prior to use.
See specific product test standard for
test lab specimen cleaning instructions.
Per ANSI/ESD S4.1 Worksurfaces "The
test specimens and electrodes shall be
cleaned twice with a minimum 70%
isopropanol-water solution using a
clean, low-linting cloth each time."
(Note: then conditioned for 72 hours,
minimum.)
For installed product periodic testing, do
not clean surfaces. However, if any
measurements lie outside acceptable
range, then clean the surface and re-test.
(Note: for worksurfaces, use ESD
Systems.com Reztore™ Antistatic
Surface and Mat Cleaner (item 10630)
or other ESD cleaner not containing
silicone. Be sure the surface is dry
before testing.
Periodic maintenance
- The area
surrounding the cable jacks at the top
end of the meter should be wiped with a
clean cloth moistened with alcohol to
remove skin oils that will accumulate
and affect the accuracy at high
resistances. The frequency of cleaning
will depend on usage; once a month
would be a good starting point. Other
items that should also be cleaned in this
fashion are the cable jackets and the
resistivity attachment, if included.
Power Requirements
The Meter is powered by two
replaceable alkaline AA batteries.
Battery Replacement
Depress buttons on both sides of bottom
end cap of meter housing. Remove cap,
press on right edge of protruding battery
door, unlatching it, and swing door
open. Carefully replace batteries with
alkaline Type AA. Polarity must be
correct or damage may occur. Close
battery door and re-install bottom end
cap on meter housing.
Test Procedure
General Guidelines:
• Use both 5# Electrodes for RTT
• Use one 5# Electrode and one lead to
groundable point for RTG (note:
groundable points are usually snaps
installed on the material or
workstation)
• Use optional Resistivity Attachment
(removing leads & electrodes) for
Resistivity measurements
• Ensure that item being measured is
electrically isolated (i.e. placed on an
insulative surface) as Meter will
measure lowest resistance path
• Ensure that test leads are separated or
Meter may measure lower resistance
path
• When using 5# Electrodes:
• Place no closer than 2" from edge
of surface being measured
• Place no closer than 3" to any
groundable point
• Place 5# Electrodes 10" apart for
RTT
• Preferred placements include: most
commonly used surface portion,
most worn, center, and furthest
from groundable point.
• For RTG, connect the sensing lead
with shielded plug to groundable
point
• If surface has sections (like floor tiles
or garment panels), for RTT place a 5
pound electrodes on different sections
• Clean surface for Test Lab, but do not
initially clean surface for installed
products (if fails, clean and retest).
Test Lab Test Procedure
Guideline
For test lab use of ESD Worksurfaces,
Floor Materials, Footwear, Garments, or
Seating, best advice is to follow
procedures in applicable ESD
Association standards (see above) which
include details regarding:
• Cleaning (For example per S4.1 "The
test specimens and electrodes shall be
cleaned twice with a minimum 70%
isopropanol-water solution using a
clean, low-linting cloth each time).
Allow to dry.
• Environmental chamber (For example
per S4.1 control relative humidity to
© 2007 DESCO INDUSTRIES INC.
Employee Owned
