Ground Zero Electrostatics
MTR-1000 Megaohmmeter
th
4916 26 Street West, Suite 100, Bradenton, Florida 34207
877-
(463-1376),
941-751-7581
1-941-751-7586
Toll Free
GND-ZERO
Direct Phone
Fax
Email
Http://www.gndzero.com
Surface Resistance Measurements (RTT)
Surface-To-Ground Resistance
Measurement (RTG)
Calibration & Maintenance
This procedure which complies with EOS/ESD-S4.1 measures resistance
between two points independent of a groundable point. Procedures vary
regarding sample preparation, probe preparation, and spacing of the 5
pound probes. Select and read the correct test procedure for the desired
measurements.
A.
Connect the monaural plug ends of the test leads into the 3.5 mm jacks of
the meter. Connect the banana plugs of the test coil cords into the 2.5 inch
disc ends of both 5 pound probes.
B.
Place both probes on the material according to test procedures.
C.
Move switch to desired test voltage position, either 10 or 100v.
D.
Press and hold the test button until power is applied to the meter and a
value is displayed. Keep the button depressed with sufficient force until the
electrical resistance, relative humidity, and temperature readings are
displayed on the meter screen.
This procedure measures the surface resistance between a ground point on
the material surface and specific positions on the material being tested. This
procedure complies with the EOS/ESD-S4.1 standard.
A.
Meter Set-Up. With both test leads connected to the meter, attach the
alligator clip to one lead and the other to the 2.5" disc end of one 5 pound
probe.
B.
Attach the alligator clip to a known ground point. Position the probe on
the surface to be tested in accordance with the desired test procedure.
C.
Press the test button until the resistivity, humidity, and temperature test
values are displayed on the LCD screen. These readings will conform to:
EIA, EOS/ESD, ANSI, IEC-93 CECC, and ASTM test procedures. When
performing tests, especially with high resistance materials, be sure the test
lead wires do not touch or overlap and that your hands are not in contact with
the probes or wires during the actual testing of the materials. This will ensure
accurate readings.
®
The ZeroStat MTR-1000 requires no service or maintenance except for an
occasional cleaning of the rubber on the probes. A mild soap and water
solution will remove dirt or other harmful contaminants from both the rubber
probes and the meter case. Harsher solvents will affect the rubber probes
and therefore should not be used. When the meter is not used for extended
periods of time, remove the battery to prevent damage and/or leakage. The
®
ZeroStat MTR-1000 is calibrated to NIST traceable standards at the factory.
The calibration is done by using a computer program and 1% resistors. This
newly improved method assures many years of long life and accurate
readings. Attaching 1% resistors to the probes or test leads will verify this
accuracy.
Figure 4 - ZeroStat MTR-1000 Point-to-Point Test
Figure 5 - ZeroStat MTR-1000 Point-to-Ground Test
Figure 6 - ZeroStat CB-9900 Calibration Box