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3M 718 User Manual


Made by: 3M
Type: User Guide
Category: Measuring Instruments
Pages: 14
Size: 0.66 MB


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User’s Guide


 Static Sensor 718, 



Air Ionizer Test Kit 718A   


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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


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Intended Use:

The 3M

 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. 

The 3M

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.


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1.0 Description

The 3M

 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 

the 3M

 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. 


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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

Supplemental notes:  

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 

the case. 


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The 3M

 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 

once, momentarily.


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 


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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


Static Sensor 

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 

turned on.


Measurement Accuracy:


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


) area.


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 



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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 


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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  
charged plate. 


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. 

5.0 Service/Calibration


Service and Repair: in the event that you believe the Static Sensor 718 or 

the 3M

 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. 


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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).


Equipment Needed



Test Fixture High-Voltage Power Supply, capable of supplying voltages 

up to 10,000V 



Voltmeter, with > 50 k


 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.


Test fixture:  


Metal plate of at least 5 square inches area 

(38.7 cm


) 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. 


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6.0 Physical Characteristics (All values typical) 

(at 1 inch (2.54 cm) distance from sensor to target)


 Static  Sensor 718


Typical Value


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

Operating Conditions

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

Class III


Conductive Housing

Power Requirements

One 9-volt alkaline battery

Measurement Ranges

0 – 1,990 kV

0 – 19,900 kV

Voltage Display

Liquid Crystal Display

Display Resolution

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. 


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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


Typical Value

Charge Plate Assembly

Per ESD Association Draft Standard ANSI/ESD SP3.3

Aluminum bracket

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)

Charger Dimensions

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

Charger Weight

5 oz. (140 g) with battery

Charger Power Requirements One 9 volt alkaline battery

Charger Output  

(using Static Sensor 718 with 

charge plate)

1.1kV minimum for positive or negative voltage


cULus, CE


 Static  Sensor 718 - continued


Typical Value

Voltage Output Jack

3/32 in. (2.5 mm) monophone

Tip: signal

Sleeve: ground

Voltage Output

1/1000 of measured voltage @ low range

1/10,000 of measured voltage @ high range

Automatic Shut-off

20 minutes after last switch activity

Distance Indicator

LED targets. Aligned targets indicate 1 in.

(2.54 cm) measurement distance

Measurement Accuracy

Within 5% of measured voltage

Measurement Stability

± 10 counts


cULus, CE


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Regulatory Information

WEEE Statement

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 

cULus Statement

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-
65-EU Directive.


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Important Notice

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. 




. 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 

theory asserted. 


Electronics Materials Solutions Division

Static Control Products

926 JR Industrial Drive

Sanford, NC 27332-9733

Toll-Free: 866-722-3736

International: 919-718-0000

Email: 3mstaticinfo@mmm.com


Please recycle. Printed in USA.

© 3M 2014. All rights reserved.

78-9102-1938-1   JHA

UL Listed to U.S. and Canadian Safety Standards. 
Mark of Conformity to European Directives (Conformité Européene). 

3M is a trademark of 3M Company.