Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: 00 44 (0) 1892-665313, Fax: 00 44 (0) 1892-668838 • Internet:
PPE-5075.E
Page 5 of 6
© 2012 CHARLESWATER LTD.
Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: 00 44 (0) 1892-665313, Fax: 00 44 (0) 1892-668838 • Internet:
*Accuracy: Resistance measurements within ± 10% (E11 and
greater ± 20%), complies with ESD-S4.1. Open circuit voltages
of 10 volts ± 5% and 100 volts ± 5% exceeds requirements of
ESD-S4.1
Meter Weight: 439 grams
Dimensions: 203 mm L x 109 mm W x 41 mm H
Test Switch: Press the red test button for 15-20 second
electrification period. Meter will immediately display surface
resistance exponent via LED. LCD will display temperature
(both Fahrenheit & Celsius), then humidity, and after taking
numerous readings and making numerous calculations display
surface resistance mantissa.
Note: Reporting test results, you may want to record the
resistance, humidity, temperature, and test voltage.
Maintenance
Your Surface Resistance Test Kit will require little maintenance,
and there are no user serviceable parts. If your Meter requires
service beyond cleaning the
Electrodes or replacing the batteries, please contact the factory.
This product utilizes a high frequency switching circuit to step
up the 3 volts from the batteries to the 100 volt test level.
Some users are able to discern a slight hum or buzzing. This is
perfectly normal and should not be considered a flaw or defect.
Calibration*
The Surface Resistance Test Kit is calibrated to NIST traceable
standards. Most users require calibration annually.
Please call our Customer Service Department at 00 44 (0)
1892-665313 for details. In-house calibration can be performed
by using 1% resistors in each of the meter ranges. Simply
attach the resistors to the enclosed cords using grounding clips
and recording the meter display. Keep the cords separated.
Should adjustment be necessary, it is recommended that the
unit be returned to the factory as access to internal adjustments
requires special equipment and test cables.
EQUIPMENT:
• Digital Multimeter - accurate to 1.25% @ 10VDC and
100VDC
• Fixed Decade Box value 10E3 - 10E12 - accurate to ±2.5%,
except at 10E11 and 10E12 (±5%)
• Thermometer - accurate to ±1°F
• Humidity meter - accurate to 2%
• Test leads
• 99% Isopropyl alcohol and cleaning wipes
SET UP:
A .Test Area
- Area needs to be free of any high voltage
transformer or power supply. Not under any type of fluorescent
lighting or high power lighting.
B. Worksurface
- needs to be covered with conductive mat at
1.0 x 10E3 or less, connected to earth ground.
C. Technician
- needs to be grounded with zero ohms resistor
to earth ground.
D. Decade Box
- needs to be grounded to earth ground.
*Accuracy is measured after normalizing the instrument at
70-80 °F and 30-50% RH for a minimum of 4 hours.
NORMALIZATION OF SURFACE RESISTANCE TESTER
Temperature inside testing area needs to be 75°F @ ±6.6%
40% to 60% RH. Testers need to stay at constant temperature
75°F @ ±6.6% for about 2 hours for proper reading. Testers
cannot be inside objects, enclosed boxes, containers or cases
unit is supplied with (temperature inside case will differ from
outside temperature, cases will act like an insulator to the
Testers), Testers will have to be stationary in testing area for
about 2 hours with no dramatic temperature changes.
TESTING OF SURFACE RESISTANCE TESTER
• When testing use only the leads supplied with the tester. DO
NOT TEST WITH RESISITIVITY ATTACHMENT, Resitivity
Attachment will give a much higher reading and is only
designed for spot checking.
• With 10V/AUTO switch down, press TEST button - voltage
between the two leads should be 10V ±5%
• With 10V/AUTO switch up, press TEST button - voltage
between the two leads should be 100V ±5%
• Using the cleaning wipes and 99% isopropyl, clean around
banana jack and mono jack where leads connects to, oil from
human fingers can alter accuracy.
• Make sure 10V/AUTO switch is set to AUTO (switch up).
Testing each decade starting from 1.0 x 10E12 and down,
never start from 1.0 x 10E3.
Temperature
Fahrenheit
= 75°F ±6.6%
Celsius
= 23.8°C ±10.2%
Relativity Humidity ±10 Digits
A. 1.0 x 10E12
+ 20% LED = 12 Yellow
Mantissa 1.20
0%
LED = 12 Yellow
Mantissa 1.00
- 20% LED = 11 Yellow
Mantissa 8.00
B. 1.0 x 10E11
+20% LED = 11 Yellow
Mantissa 1.20
0%
LED = 11 Yellow
Mantissa 1.00
-20%
LED = 10 Green
Mantissa 8.00
C. 1.0 x 10E10
+10% LED = 10 Green
Mantissa 1.10
0%
LED = 10 Green
Mantissa 1.00
-10%
LED = 9 Green
Mantissa 9.00
D. 1.0 x 10E9
+10% LED = 9 Green
Mantissa 1.10
0%
LED = 9 Green
Mantissa 1.00
-10%
LED = 8 Blue
Mantissa 9.00
E. 1.0 x 10E8
+10% LED = 8 Blue
Mantissa 1.10
0%
LED = 8 Blue
Mantissa 1.00
-10%
LED = 7 Blue
Mantissa 9.00
