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Full Text Searchable PDF User Manual
Static Sensor 718,
Air Ionizer Test Kit 718A
Table of Contents
Safety Information..................................................................................... 2
1 Description ................................................................................................ 3
2 Power Requirements and Battery Installation ........................................... 3
3 Operation of the 3M
Static Sensor 718 ................................................... 4
4 Operation and Use of the 3M
Air Ionizer Test Kit 718A ........................ 7
5 Service/Calibration......................... ........................................................... 8
6 Physical Characteristics (All values typical) ........................................... 10
7 Parts Included .......................................................................................... 11
Regulatory Information ........................................................................... 12
Warranty .................................................................................................. 13
Static Sensor 718 is a portable, handheld instrument designed for
measuring voltages associated with electrostatic charge. Its intended use is for
measuring the amount of voltage, in a range from 19,900 kilovolts, associated
with an electrostatic charge buildup on a surface. Any deviation from this
intended use could impair the instrument’s effectiveness and possibly lead to an
unsafe operating condition.
Air Ionizer Test Kit 718A is a set of accessories for use in conjunction
with the Static Sensor 718. Their intended use is for verifying the operation of
air ionizers by measuring the neutralization time for a static charge placed on a
stationary metal plate. Any deviation from this intended use could impair the
instrument’s effectiveness and possibly lead to an unsafe operating condition.
• The Static Sensor 718 and 3M
Charger 718A use 9VDC power supplied by a 9V alkaline
battery. Usage of any other power source may cause damage to the instruments.
• The Static Sensor 718 and Air Ionizer Test Kit 718A have no user-serviceable parts. Do not
disassemble the products for any reason. UNAUTHORIZED SERVICE WILL VOID THE WARRANTY.
• The Static Sensor 718 and Charger 718A are NOT designed for usage in hazardous environments
where the possibility of explosion or fire exists.
Read and understand all safety information before installing and operating this equipment.
Static Sensor 718 is a portable handheld instrument used for locating
and measuring electrostatic charges. It can beused to locate ESD trouble-areas,
and is a valuable tool for the ESD-control engineer. Used in conjunction with
Air Ionizer Test Kit 718A (available separately), it can be used for
verification and auditing of air ionizers.The Static Sensor 718 is battery-powered
and has several measurement features:
Range: measurements can be taken in a 0-1,990 kV or 19,900 kV range.
Automatic Zero: push button feature allows easy adjustment to zero. No screws
or dials to turn.
HOLD function: allows the User to “freeze” a displayed measurement, for later
Automatic shutoff: conserves battery power by shutting off the instrument after
20 minutes of inactivity.
2.0 Power Requirements and Battery Installation
2.1 Both the Static Sensor 718 and 3M
718A use a 9V alkaline battery.
2.2 To install the battery on either unit:
Remove the battery cover, located in the
lower back of the unit. To do this, press down
on the cover and slide it downward.
2.2.2 Pull the battery connector out of the housing,
and align the male/female ends of the
connector with the proper terminals on the
2.2.3 Connect the two and place the connected
battery into the housing by inserting the
connector end first, then following up with the other end of the battery.
2.2.4 Replace the cover.
2.3 The 3M
Static Sensor 718 has a Low Battery
indicator. Once the battery is depleted to
approximately 6.5 volts, the instrument will
show BAT in the display. At this time, the
Static Sensor 718 will not produce accurate
results and the battery should be replaced.
2.4 The 3M
Charger 718A also has a low battery
indicator. This is an LED located at the left-
hand side of the unit. When the battery voltage
drops below operating level, the LED will light
up. At this time, the user shouldreplace the
battery. Usage of the Charger 718A under low
battery conditions would lead to insufficient
voltage levels being generated.
3.0 Operation of the Static Sensor 718
For accurate measurements during
usage, it is recommended that the
outside housing of the Static Sensor
718 be connected to an electrical
ground. This can be accomplished
by having the user holding the instrument
connected to ground through either a static
control wrist strap, or while wearing static
control footwear. The enclosure of the
Static Sensor 718 is made of conductive
plastic and is, therefore, electrically
connected to whomever is holding the instrument. In addition, ground for the
instrument can be provided through the Voltage Monitor Output on the front of
Static Sensor 718 is a precision electronic instrument. Improper use
or rough treatment can damage the unit, and render it incapable of providing
accurate measurements.2.2.4 Replace the cover. 2.3 The Static Sensor 718 has a
Low Battery indicator. Once the battery is depleted to approximately 6.5 volts,
the instrument will show BAT in the display. At this time, the Static Sensor 718
will not produce accurate results and the battery should be replaced.
Turning the unit ON and OFF: To turn on the Static Sensor 718,
momentarily press down on the membrane switch labeled POWER.
Determining that the power is on can be verified by seeing that the liquid
crystal display (LCD) is on, and that the red light-emitting diodes in the
front of the sensor are lit. To shut off the Static Sensor 718, momentarily
press down on the membrane switch labeled POWER. Determining that the
power is off can be verified by seeing that the liquid-crystal display (LCD) is
Making Electrostatic Voltage
Measurements: hold the instrument
1-inch (2.54 cm) away from the object
being measured. The display will
update with the voltage measurement
in kilovolts. If the measured voltage is
greater than the measurement range of
the instrument, a -1. will be displayed.
At this time, switch to a greater range.
If over-ranging occurs even with the
high range activated, the static charge on
the object cannot be measured with the
Static Sensor 718.
Measurement Range: all measurements are in kilovolts (kV) as stated
on the front label of the unit. The Static Sensor 718 has two measurement
ranges: 0-1,990 kV and 0-19,900 kV. The unit’s current measurement
range mode can be verified by checking the display. Three digits following
the decimal point indicate that the unit is in 0-1,990 kV range. Two digits
following the decimal point indicate that the sensor is in 0-19,900 kV range.
To change between measurement ranges, press the RANGE/HOLD button
HOLD Function: in the event that the user wishes to freeze the current
measurement, the HOLD function of the Static Sensor 718 may be used.
Simply press the HOLD switch momentarily and the currently displayed
voltage will be frozen. A HOLD notice will also be displayed to alert the
user that the instrument is currently in HOLD status. To unfreeze the display
and return to floating measurement, momentarily press the HOLD switch
once again. Please note that during HOLD condition the distance indicating
LED’s are turned off.
Zero adjustment: the 3M
718 has a zero adjustment function, which
sets a zero reference point for all subsequent
measurements. This zero reference can be
set by pointing the instrument at a known
zero-voltage surface, and holding down the
RANGE/ZERO button for longer than 3
seconds. After 3 seconds, the display will flash
and adjust to zero. Repeat this step for both the
low and the high ranges. The zero adjustment
should be performed every time the unit is
Distance Indicator: the Static Sensor
718 is factory calibrated to give accurate
measurements when it is placed one inch
(2.54 cm) away from the object to be
measured. To assist the user in gauging this
distance, two light-emitting diodes (LED’s) are present on the front face
of the instrument. These LED’s emit two red, bullseye targets on the
surface of the object being measured. As the instrument gets closer to the
one inch measurement distance, the bullseyes begin to converge. When
they converge and become one, the instrument is approximately one inch
away, and the measurement can be made.
For more accurate measurements, it is recommended that the user
manually measure the distance between the front housing of the
instrument and the object being measured.
Accuracy and Size of Object to be Measured: the minimum surface
area on an electrostatically charged object which can be accurately
measured is a 5 square inch (32.3 cm
Measurements from Greater than One Inch (2.54 cm) Away: in the
event that a one inch separation between object-to-be measured and the
Static Sensor 718 cannot be achieved, it is possible to get approximate
readings. Please contact your 3M representative for additional
Continuous Output: an output jack is
provided on the front of the 3M
Sensor 718. This output can be used to feed
a continuous signal into a data storage device
for continuous monitoring of measured
voltages. Please use a 3/32 inch (2.5 mm)
mono-phone plug to connect into the output
jack. The output signal is dependent on the
measurement range currently selected. For
the low range, the output signal is 1/1000 of
the measured electrostatic voltage. For the
high range, the output signal is 1/10,000 of
the measured voltage.
Automatic Shut-Off: the Static Sensor 718 will automatically shut-off
20 minutes after the last switch activity. This is done in order to conserve
battery power. In the event that the user needs to have the unit stay ON
continuously, when turning the unit on press the POWER AND RANGE
switches simultaneously. This deactivates the Automatic Shut-Off
feature. The BAT indicator will then flash three times to indicate that the
automatic shut-off features has been disabled. The Automatic Shut-Off
feature will reset itself the next time the instrument is turned on.
4.0 Operation and Use of the 3M
Air Ionizer Test Kit 718A
It is recommended that the user be familiar with ionizer test standards ANSI/
ESD S3.1 and draft standard ANSI/ESD SP3.3 if the Air Ionizer Test Kit 718A is
used to perform verification testing on ionizer performance.
Assembly: slide the charge plate over the Static Sensor 718 until it stops.
The charge plate slides onto the lower groove,
on the sides of the Static Sensor 718.
Charging the plate: holding the Static Sensor
718 (with charge plate attached) in one hand,
use the other hand to touch the probe of the
Air Ionizer Test Kit 718A to the charge
plate. Press either the + button (for a positive
voltage) or the – button (for a negative voltage),
then remove the probe from the charge plate.
Be sure to keep the button pressed while
removing the probe from the charge plate.
The display on the Static Sensor 718 will
indicate a positive or negative charging voltage
(1.1kV minimum). If a voltage of less than
±1.1kV is displayed, check to see if the low
battery indicator on the 3M
Charger 718A is
illuminated. If illuminated, replace the battery
in the charger. If the unit continues to supply
an incorrect voltage to the charge plate, please
contact 3M for additional instructions.
Testing ionizer discharge time: after charging
the plate, hold the 3M
Static Sensor 718
approximately one foot (30.5 cm) away from the ionizer. Monitor the
display to see how quickly the 1.1 kV charge is dissipated to 0.1 kV. The
speed at which this occurs (the discharge time) indicates how well the
ionizer is operating. Please refer to the specific ionizer’s operating manual
or consult with the ionizer manufacturer to determine what this discharge
time should be. Repeat this procedure for both a positively and a negatively
Testing ionizer offset balance: zero
the charge plate by touching it with a
grounded object. This can either be the
finger of a grounded person or some other
item which is connected to electrical
ground. In either case, zeroing the charge
plate should make the display on the
Static Sensor 718 read zero. Hold the
Static Sensor 718 approximately one foot
(30.5 cm) in front of the ionizer. Monitor the display. The value displayed is
the offset balance of the ionizer, which is the difference between the number
of positive and negative ions being emitted. Please refer to the specific
ionizer’s operating manual or consult with the ionizer manufacturer to
determine what this offset balance should be.
Service and Repair: in the event that you believe the Static Sensor 718 or
Air Ionizer Test Kit 718A is in need of repair, please contact your
local 3M representative for troubleshooting help, and, as needed, repair
information. There are no user-serviceable parts on either product.
Calibration: the 3M
Static Sensor 718 and 3M
Air Ionizer Test Kit
718A products are supplied by the factory pre-calibrated. 3M does not
specify a minimum calibration cycle for the Static Sensor 718 or Air
Ionizer Test Kit 718A products. The user, usually according to internal
Quality procedures, determines calibration cycles. In the event that the
user wishes to perform a self-calibration, the following steps should be
followed for the Static Sensor 718 (user-calibration not possible on the
Air Ionizer Test Kit 718A).
Test Fixture High-Voltage Power Supply, capable of supplying voltages
up to 10,000V
Voltmeter, with > 50 k
Ω input impedance, capable of measuring voltages
down to the μV range.
Cable with a 3/32 inch (2.5 mm) mono plug and secondary connector to
interface with voltmeter.
Metal plate of at least 5 square inches area
Metal stand capable of supporting Static Sensor
718, and holding it one inch (2.54 cm) away
from the metal plate, centered.
Connectors on the plate with which it can
interface with the high voltage power supply.
Connections on the metal stand with which it
can be connected to electrical ground.
5.5.1 Place the Static Sensor Static Sensor 718 on the
metal stand. Verify that it is exactly one inch
(2.54 cm) away from the metal plate, and that its position is centered
relative to the plate.
5.5.2 Connect the stand to ground.
5.5.3 Turn on the Static Sensor 718 and set it to the low range.
5.5.4 Ground the plate. Zero the display.
5.5.5 Remove the ground from the plate, and connect it to the high voltage
power supply. Apply a 1 kV charge to the plate.
6.0 Physical Characteristics (All values typical)
(at 1 inch (2.54 cm) distance from sensor to target)
Static Sensor 718
0.85" H x 2.4" W x 4.2" L
2.2 cm H x 6.1 cm W x 10.6 cm L
4.4 oz. (125 g) with battery
41º F - 95º F (5º C - 35º C)
Up to 80% RH, non-condensing
Indoor use only
For use at altitudes below 42, 300 ft. (2,000 m)
Pollution Degree II
One 9-volt alkaline battery
0 – 1,990 kV
0 – 19,900 kV
Liquid Crystal Display
1V/inch (0.39V/cm) @ low range
10V/inch (3.9V/cm) @ high range
± 10 counts
5.5.6 The instrument should now be reading
1.000. If it is not, remove the battery
door and use a screwdriver to turn the
small screw located inside the battery
compartment. Use a small screwdriver to
turn the small screw, located on the front
right side of the instrument. This screw
should adjust the reading on the display.
Once the display has been adjusted to read
1.000, the low range of the 3M
Sensor 718 is now calibrated.
5.5.7 Repeat procedures 5.5.2 - 5.5.6 for the high of the meter, using a test
voltage of 5,000 volts.
7.0 Parts Included
Static Sensor 718
1 ea. Static Sensor 718
1 ea. 718/718A User’s Guide
Air Ionizer Test Kit 718A
1 ea. Charge Plate Assembly 718A
1 ea. Charger 718A
1 ea. 718/718A User’s Guide
Air Ionizer Test Kit 718A
Charge Plate Assembly
Per ESD Association Draft Standard ANSI/ESD SP3.3
Bare stainless steel plate
Teflon spacers isolate plate from bracket
Charge Plate Area
3.25" W x 1.25" L
8.3 cm W x 3.2 cm L
Charge Plate Assembly Weight
2.5 oz (70 g)
0.87" H x 2.4" W x 4.9" L
2.2 cm H x 6.1 cm W x 12.4 cm L
5 oz. (140 g) with battery
Charger Power Requirements One 9 volt alkaline battery
(using Static Sensor 718 with
1.1kV minimum for positive or negative voltage
Static Sensor 718 - continued
Voltage Output Jack
3/32 in. (2.5 mm) monophone
1/1000 of measured voltage @ low range
1/10,000 of measured voltage @ high range
20 minutes after last switch activity
LED targets. Aligned targets indicate 1 in.
(2.54 cm) measurement distance
Within 5% of measured voltage
± 10 counts
The following information is only for EU-members States: The mark shown
to the right is in compliance with Waste Electrical and Electronic Equipment
Directive 2002/96/EC (WEEE). The mark indicates the requirement NOT to
dispose the equipment as unsorted municipal waste, but use the return and
collection systems according to local law.
To reduce the risks associated with environmental contamination: Dispose
of the monitor and power adapter in accordance with local, state, and federal
Meets UL Safety Requirements.
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Restriction of the use of certain hazardous substances (RoHS): Meets 2011-
All statements, technical information, and recommendations related to 3M’s products
are based on information believed to be reliable, but the accuracy or completeness is
not guaranteed. Before using this product, you must evaluate it and determine if it is
suitable for your intended application. You assume all risks and liability associated with
such use. Any statements related to the product which are not contained in 3M’s current
publications, or any contrary statements contained on your purchase order shall have no
force or effect unless expressly agreed upon, in writing, by an authorized officer of 3M.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture for one year from
the time of purchase.
3M MAKES NO OTHER WARRANTIES INCLUDING, BUT
NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within
the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to
replace or repair the 3M product or refund the purchase price of the 3M product.
where prohibited by law, 3M will not be liable for any indirect, special, incidental or
consequential loss or damage arising from this 3M product, regardless of the legal
Electronics Materials Solutions Division
Static Control Products
926 JR Industrial Drive
Sanford, NC 27332-9733
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