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SURPA 9802 MEGOHMMETER
Measures resistivity/resistance,temperature and humidity
“Humidity and temperature affect resistivity so they must be measured.”
Measures resistivity:103-1012 ohms/sq.
Measures resistance: 103-1012 ohms
Measures relative humididty:10% to 90%RH
Measures temperature:0·C-37.7·C(32·F to 100·F )
10v/100v test voltage range
Include probes:-- two 5 pound weight,2.5”RTT,RTG disk probes
-- two 3”parallel surface resistivity probes
LCD alpha-numeric scale-no LED’S
Rechargeable battery capability
Test mats,floor finishes,paints,wrist straps,smocks,foot wear,bags and containers
SURPA 9802 Megohmmeter is designed to test all conductive ,anti-static
and static dissipative surfaces for electrical resistivity/resistance
according to EOS/ESD,CECC,ANSI,ASTM test procedures.It’s easy to use and is of high quality and dependability.The meter also measures
relative humididty and temperature,both of which affect electrical properties.
Feautures:
Measures resistivity,temperature and humidity
103-1012 ohms/sq test range
10v/100v test ranges
Blow molded travel case
Light weight meter-15oz.
Alpha-numeric LCD scale
Automatic power shut off
Auto zeroing
Two 5 lb.disk probes and built in resistivity probes
One year warranty
Replaceable probes
9 volt DC battery or 120 volt AC adapter
Cleanroom probes available
Concentric ring resistivity probe(optional)
SURPA 9802 MEGOHMMETER
OPERATION INSTRUCTIONS
Operation:
Before testing ,please make sure that surfaces to be tested are clean and free of contaminants.
Parallel Probe Resistivity Method
The parallel resistivity probe method,complies with EOS/ESD-S11.11-1993.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 value on the data report.
A. Place the meter on the requested surface to be tested.
B. Move switch to desired test voltage position,either 10 or 100 volts.
C. Press and hold the test button with approximately 5 pounds of applied force.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 per square inch,temperature in centigrade,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.
Concentric Ring Probe Resistivity Method
(Concentric Ring Probe is an optional part)
Insert both coils using the monaural plugs into the 3.5mm 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 ohms/square.e.g.3.5x104 ohms/square(displayed value).
Actual resistivity value will be 3.5x105 ohms/square.
Resistance Between Two Points(RTT)
This procedure which complies with EOS/ESD S4.1 measures resistance between two points independent of a ground 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 measurement.
A. Connect the monaural plug ends of the test leads into the 3.5mm jacks of the meter.
Connect the banana plugs of the test coil cords into the 2.5 inch disc ends of the 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 100 V.
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.
Surface –to-Ground Resistance Measurement(RTG)
This procedure measures the surface resistance between a ground point on the materail surface and specific positions on the material being tested.This procedure
Complies with the EOS/ESD S4.1 standard.
- 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.
- 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.
- 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 test,especially
With high resistance materials ,be sure the test lead wires do not touch or overlap and that your hands are not tin contact with the probes or wires during the actual
Testing of the materials.This will ensure accurate readings.
SPECIFICATIONS
Accuracy for 10 volt scale:
10e3-10e4+/-9%@RH<90%
10e4-10e8+/-5%@RH<90%
10e8-10e9+/-9%@RH<90%
10e9-10e10+/-25%@RH<60%
Accuracy for 100 volt scale:
10e6-10e8+/-5%@RH<90%
10e9-10e10+/-9%@RH<60%
10e10-10e11+/-15%@RH<50%
10e11-10e12+/-25%@RH<40%
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