Ground Zero ZeroStat MTR-1000 Manuale utente
Description:
Test Procedures:
®
The ZeroStat MTR-1000 Resistance-Resistivity-Humidity-Temperature
Test kit is an easy to operate, compact, lightweight, portable meter
designed to measure temperature, humidity, and electrical
resistance/resistivity. Using both internal and external test probes, the
meter will measure resistivity, resistance between two points, and
resistance to ground according to EOS/ESD Association Standards, -
S4.1, S6.1, S7.1, S11.11, and European Standard CECC-EN 1000/15.
®
The ZeroStat MTR-1000 is designed and
manufactured in the USA to allow
accurate measurements for engineers,
designers, quality control departments,
incoming inspectors and
sales/manufacturing personnel.
Industries where the meter can be
applicable include electronics, defense,
maintenance, medical, photographic,
printing, and other industries where
accurate temperatures, humidity, and
resistance measurements are required.
Specific industries which require accurate
measurements will dictate the correct test
procedures. The procedure outlined in
the Product Test Bulletin is specifically
used in the electronics industry where the
EOS/ESD and CECC procedures
predominate. It is recommended that
other industry procedures may be more
appropriate for your industry. These may
include MIL-HDBK-263, EIA-1S-5-A, ASTM D-257, and ASTM F-150. Failure
to measure relative humidity and temperature at the time of testing is in
non-compliance with ANSI/ESD-S4.1, S7.1. and S11.11
All materials must be tested on an insulated surface to avoid misleading
measurements. It is possible to measure down through the surface and
not along the surface. This is especially true with non-homogeneous or
multilayer materials. It is possible to actually measure down through the
dissipative surface layer and along the inner conductive surface and back
up through the dissipative layer. This is why it is not technically correct to
include a surface measurement value for two layer materials. Always
measure material thickness when measuring electrical properties because
thickness, temperature, and relative humidity can and will affect the
resistance/resistivity readings.
Meter Test Kit Contents:
CAUTION:
®
1 ZeroStat MTR-1000 Resistance-Resistivity-
Humidity-Temperature Meter
1 Blow Molded, Foam-Lined Travel Case
1 Concentric Ring Probe (optional)
2 5lb, 2.5 inch Diameter Test Probes.
2 Coil Cord 6 foot Test Grounding Leads
1 Grounding Clip
1 9 volt Battery
1 Product Instruction Bulletin
1 AC Power Adapter
1 NIST Certificate of Calibration
As with all high quality test equipment proper storage and use
of the ZeroStat MTR-1000 is required.
Because the AC power adapter will charge the battery, ONLY
USE a rechargeable battery when operating the AC adapter
with this meter.
Figure 1. -
®
ZeroStat MTR-1000
Megohmmeter
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
®
ZeroStat MTR-1000 Megohmmeter
Digital Resistivity/Temperature/Humidity Meter
Concentric Ring
Resistivity End
One Probe Measures
Both Resistivity
and Resistance
Resistance
End
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
Ground Zero Electrostatics
MTR-1000 Megaohmmeter
Figure 2 - Features of the ZeroStat MTR-1000
A
B
C
D
E
H
G
F
A. Test Button - The
round black button will
turn on the power. When
depressed and held
down with reasonable
force the
resistivity/resistance,
humidity, and
temperature values are
displayed on the screen
for approximately 45
seconds. At the
completion of the test
the power will be turned
off automatically.
B. Selector Switch -
The switch selects the
desired applied test
voltage of either 10 or
100 volts.
36
At 10 volts the resistivity range is 1x10 - 9x10 ohms/sq. At 100 volts the
612
resistivity range is 1x10 - 1x10 ohms/sq.
If the battery is too low to give accurate readings the LCD will display "Low
Battery".
3
If the resistivity is below 10 ohms/sq., the LCD will display "Less than 1K".
12
If the reading is over 10 ohms/sq., the LCD will display "More than 2e12".
6
If the reading is over 10 ohms/sq. the LCD will display "Change to 100
6
volts" if the meter is set on 10 volts. If the reading is under 10 ohms/sq.,
the LCD will display "Change to 10 volts" if the meter is set on 100 volts.
C. External Test Jacks - The external probe test jacks on the top of the
meter are 3.5 mm monaural. For safety, banana plugs will not fit into
these jacks. When the plugs are inserted into the jacks the parallel test
probes on the bottom of the meter are deactivated.
D. AC Power Adapter - This plug allows the meter to be used with a
center positive 9 - 12 volt 200 mA power adapter. Using the incorrect
power adapter may cause serious damage to the instrument.
E. Ground Jack - Because of the possibility of 60 cycle electrical noise
the enclosed ground cord is recommended when the power adapter is
used. This jack is located on the top of the meter. Insert the plug into
the meter jack and attach the other end to the earth ground of the
building.
F. Battery Compartment - This compartment houses a supplied
9 volt battery which must be installed prior to use.
G. Parallel Test Probes- These probes are made from a highly
conductive, low durometer elastomer. Care should be taken to
avoid harsh solvents and extreme abrasion. Occasional cleaning
with a mild soap and water solution will extend the life of the
probe feet. If damage does occur, these probes are replaceable
for a nominal charge. These probes are used to test electrical
surface resistivity in ohms/square.
H. Case The meter case is injection molded from a high impact ABS
polymer. Simple cleaning with a mild soap and water solution will remove
any dirt or debris.
Prior to testing, ensure that surfaces to be tested are clean and free of
contaminants.
Parallel Probe Resistivity Method
The parallel resistivity probe method, complies with ASTM D-257. It is
used to give fast electrical resistivity measurements on flat homogeneous
materials. It may be used on multilayered materials, but this should be
noted along with the temperature and humidity values on the data report.
A. Place the meter on the desired surface to be tested.
B. Move switch to desired test voltage position, either 10 or 100
volts.
C. Press and hold down the test button. After the meter has had
time to measure the resistivity, humidity, and temperature these
values will be displayed on the LCD screen. This will happen
in approximately 15 seconds.
The resistivity reading will be in ohms/square, temperature in degrees,
and relative humidity in percent.
The meter will keep updating the display while the button is held down
and will continue to display the last test reading for approximately 45
seconds after the button is released.
Insert both coil cords using the
monaural plugs into the 3.5 mm
meter jacks. Attach the banana plug
coil cord terminations to the
concentric ring probe. Place the
probe on the surface to be tested.
Press the test button and wait 15
seconds. The correct temperature
and humidity will be displayed on
the LCD screen. The resistivity value
displayed MUST be multiplied by a
factor of ten to achieve the actual
test value. These values will read in
4
ohms/square, e.g., 3.5 x 10
ohms/square (displayed value).
Actual resistivity value will be 3.5 x
5
10 ohms/square.
OPERATION
SURFACE RESISTIVITY
Concentric Ring Probe Resistivity
Method
FEATURES
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
Resistivity Test Ranges
Power - Battery Supply
Current Limit:
36
1 x 10 - 9 x 10 ohms at 10 volts.
612
1x10 - 1 x 10 ohms at 100 volts.
A 9 volt battery is supplied. If a rechargeable
battery is used, the recharging can be done
inside the meter.
The 12 volt power supply is both an adapter and
a recharging device. With a 9 volt alkaline
battery the expected life is approximately 30
hours or 5,000 twenty second measurements.
Using an adapter not designed for this meter
may cause serious damage negating the
warranty on the meter. Only a 12 volt DC, center
positive 200 mA adapter is recommended.
A low battery indicator will alert the user to
replace a weak battery.
If a weak battery is not replaced the meter may
continue to give test readings, but these
readings should not be considered accurate.
1 milliamp DC current for 10 volts.
0.1 milliamp DC current for 100 volts.
Accuracy:
Zero:
Operating Conditions:
Display:
Meter Weight:
Dimensions:
38
10 - 10 ohms +/- 5%
9 10
10 - 10 ohms +/- 9%
11 12
10 - 10 ohms +/- 25%
Automatic zeroing
OOOO
32 F - 100 F (O - 38 C)
Two line, thirty two .20" character alpha
numeric. LCD displays all test results
simultaneously.
10.2 oz. (289 mg) Meter and battery only.
12 lbs. (5.476 kg) including meter, adapter,
probes, leads, and case.
7.50 inch (19.05 cm) L. x 4.00 inch (10.16 cm) W.
x 1.50 inch (3.81 cm) H.
Probes:
Power Switch:
Two 2.87 inch (7.2 cm) long,
parallel, conductive rubber re
placeable probes on the bottom of the meter
case. They conform to ASTM, ANSI and CECC
standards.
Two 5 pound (2.27 kg), 2.5 inch (6.4 cm)
diameter, conductive rubber probes.
One 5 pound concentric ring probe conforming
to EOS/ESD, ANSI and CECC standards.
(optional)
Enclosed with these probes are two 6 foot (183
cm) coil cord test leads.
Momentary on, press button.
Warranty Exclusion:
Limit of Warranty:
The foregoing express warranty is made in lieu of other product warranties express and implied, including
merchantability and fitness for a particular purpose which are specifically on indirectly disclaimed.
The express warranty will not apply to defects or damage due to neglect, misuse, accidents, alterations,
operator error, failure to properly maintain, follow instruction, or failure to clean or repair products.
In no event will Ground Zero Electrostatics, Inc. or seller be responsible or liable for special, incidental or
consequential losses or damages, whether based on tort, contract, or the use of, or inability to use, the product.
Before using the product users shall determine the suitability of the product for their intended use. The users
assume all risk and liability whatsoever in connection therewith.
Fulfillment of Ground Zero Electrostatics, Inc.'s warranty obligations will be the customer's exclusive remedy
and Ground Zero Electrostatics, Inc, and seller's limit of liability for any breach of warranty or otherwise
Any questions regarding these procedures or other questions should be directed to our engineering
staff or customer service representatives by calling 1-877-GND-ZERO (463-9376). Ground Zero
Electrostatics, Inc. Cedar Village Executive Offices, 4916 26th Street West, Suite 100, Bradenton,
Florida 34207
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
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