TB-2024
Page 4 of 4
DESCO INDUSTRIES INC.
Employee Owned
Battery Life:
Nikel/Cadmium - approximately 1
hour
Charge Time:
12 hours
Adapter Output:
12 volt DC - 100mA
Internal Electrodes:
Two parallel conductive silicone
rubber replaceable electrodes
External Electrodes:
Two 5-pound weighted electrodes,
2.5" in diameter, complies
with EOS/ESD-S4.1
Display:
One six character .500" LCD
display
Accuracy:
10
3
- 10
9
= ±15% at 10-90% RH
10
9
- 10
11
= ±20% at 10-60% RH
10
11
- 10
12
= ±30% at 10-50% RH
Meter Weight:
13 oz.
Charger Weight:
11 oz.
Dimensions:
7.5"L x 4"W x 1.75"H
Power Switch:
Momentary on. Releasing the
switch will hold and display for
>10 seconds.
C. Position the electrode on the material at the position
specified by the procedure selected. Set the megohmmeter
to the desired test voltage range. Be sure to keep the cords
separated in order to prevent false readings especially
when testing high resistance materials.
D. Press the red test button for 10-20 seconds. The
measured resistance value will appear on the display. This
reading is expressed in ohms. You may want to record the
reading, humidity, temperature and test voltage.
E. Repeat procedure on the other points on the material
under test.
Surface Resistivity Measurements -
Quick Reference
Complies with ANSI EOS/ESD S11.11
A. Firmly place the megohmmeter’s parallel probes on the
surface of the material to be tested, at the position specified
by the procedure selected.
B. Press and hold the red test button for 10-20 seconds.
The measured resistivity value will appear on the display.
This reading is expressed in ohms. You may want to record
ambient temperature and humidity.
Maintenance
Your Surface Resistance Test Kit will require little
maintenance, and there are no user serviceable parts. If
your megohmmeter requires service beyond cleaning the
probes or replacing or recharging the battery, please
contact the factory.
Calibration
The 19770 is calibrated to NIST traceable standards.
Please call our Customer Service Department at 909-627-
8178 (Chino, CA) or 781-821-8370 (Canton, MA) 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. Adjustments to
the internal resistance pots can be done quite easily.
Request this procedure from the Desco Customer Service
Department.
Specifications
Ranges:
10
3
- 10
11
ohms @ 10 Volts
10
6
- 10
12
ohms @ 100 Volts
Power Supply:
9 volt rechargeable
Nickel/Cadmium battery and AC
adapter/charger included.
Alkaline battery optional.
Limited Warranty
Desco expressly warrants that for a period of one (1) year from the date
of purchase, Desco Test Kits will be free of defects in material (parts)
and workmanship (labor). Within the warranty period, the product will be
tested, repaired, or replaced at Desco’s option, free of charge. Call our
Customer Service Department at 909-627-8178 (Chino, CA) or 781-
821-8370 (Canton, MA) for a Return Material Authorization (RMA) and
proper shipping instructions and address. Include a copy of your original
packing slip, invoice, or other proof of purchase date. Any unit under
warranty should be shipped prepaid to the Desco factory.Warranty
repairs will take approximately two weeks.
If your unit is out of warranty call Customer Service at 909-627-8178
(Chino, CA) or 781-821-8370 (Canton, MA) for a Return Material
Authorization (RMA) and proper shipping instructions and address.
Desco will quote repair charges necessary to bring your unit up to
factory standards.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL
OTHER PRODUCT WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express
warranty will not apply to defects or damage due to accidents, neglect,
misuse, alterations, operator error, or failure to properly maintain, clean
or repair products.
Limit of Liability
In no event will Desco or any seller be responsible or liable for any
injury, loss or damage, direct or consequential, arising out of the use of
or the inability to use the product. Before using, users shall determine
the suitability of the product for their intended use, and users assume all
risk and liability whatsoever in connection therewith.
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449
DESCO EAST
- 90 Hudson Road, Canton, MA 02021-1407 • (781) 821-8370 • Fax (781) 575-0172 • Web Site: http://www.desco.com
