Transforming Technologies Ohm Metrics EFM115 User manual

Instruction Manual
Static Field Meter & Ionizer Verification Unit
Model EFM115
T R A N S F O R M I N G T E C H N O L O G I E S , L L C
O U T S T A N D I N G A L T E R N A T I V E S I N S T A T I C C O N T R O L
Ohm Metrics™

Contents
1Description
EFM115 1
Ohm Metrics 1
Specifications
2Operation
Battery Installation 2
Static Field Meter 2
Ion Balance 2
Measuring Two Point Resistance 3
LED Indication Guide 4
Calibration 4
3Parts Included List 4
4Service and Warranty 5

1
Description
Ohm Metrics Pocket Static Field Meter:
EFM115
The EFM115 is a convenient electrostatic field meter used
to locate and measure static charges and test the balance
of air ionizers. Its compact design and four button inter-
face makes it easy to operate. The EFM115 measures
static voltages within ±20kV (20,000V) at a distance of
1".
The EFM115 can be used to measure low voltages up to
200V in ion balance mode with a built in charge plate.
The combination of field meter and ion balance tester
makes the EFM115 the ideal meter for static audits, and
periodic verification of ionizers and meets periodic test
requirements per Compliance Verification ESD TR53 and
conforms to ANSI/EOS/ESD (S4.1, S7.1, S12.1, S2.1).
Ohm Metrics test and measurement products, from
Transforming Technologies, are useful, reliable tools for
characterizing and identifying the electrical resistance of
materials and the performance of personal grounding
products.
 All Ohm Metrics products are designed to support
ESDA Compliance Verification TR53.
 All Ohm Metrics products can be calibrated.
 All Ohm Metrics test and measurement products are
warranted for 1 full year.

2
The EFM115 features:
 Easy to read, easy to use operations
 Lightweight, compact design
 Range light assures accurate and repeatable measure-
ments
 Automatic range switching up to ±20kV (20,000V) at
1" (25mm)
 Digital and bar graph display
 Automatic power off after five minutes (may be disabled
if preferred)
Product Specifications
Product Number
EFM155 Electrostatic Field Meter
Measuring range
Static voltage ± 0 ~ ± 1.49 kV (Low range)
± 1.0 ~ ± 20.0 kV (High range)
Ion balance voltage 0 ~ ± 200 V
Measuring distance 25 mm ± 0.5
Accuracy ±10%
Ambient conditions 0°C ~ 40 °C, 680%RH or lower
Display Large LCD display (Digital and bar graph)
Power 9V, 6F22Y manganese battery:
1PCE (Life: Approx. 30hours)
Weight Approx. 140g without ion balance
plate (Ion balance plate : Approx.
30g)

3
Power Requirements
The EFM115 uses a 9V, 6F22Y Manganese battery and has
a life of about 30 hours. The life of the battery is displayed
on the LED front panel, with a battery icon that changes in
4 stages:
Battery Replacement Procedure
The battery compartment on the back side of the field me-
ter has a removable cover marked OPEN.
NOTE: Be careful while connecting or disconnecting
the battery. To avoid breaking the contacts, do not
pull the connection plug hard.
1. Press down on OPEN and slide the cover down.
2. Remove the old battery (if present).
3. Connect the new battery and insert it into the bat-
tery compartment.
4. Reattach the cover back to the battery compart-
ment.
NOTE: Before closing the cover, make sure that no
parts of the leads are outside the battery compart-
ment.
Full 3/4ths Low Replace
Battery

4
EFM115 Front Panel
Sensor for
Determining
Electrostatic
charge levels
Focus-Ring LED lights
The below message
appears during
sensor failure
Four color coded
buttons to switch
Measurement
modes
Unit comes with
handy carrying
case
Open the lid on the
back of meter
to change battery
Ground unit prop-
erly prior to use to
ensure accuracy
Charge plate for ion
balance is built in.

5
Operation:
Four Button Interface
The EFM115 has four push buttons: Power (Red) Ion Bal-
ance (Blue) Hold (Yellow) and Reset (Orange). The but-
tons operate by pressing once lightly.
Note: Do not push the buttons with excessive force or
repeatedly. The effective life may be decreased by re-
peated misuse.
Press the Power button once and the unit will turn on in
"Static Field Meter" Mode. This is the default mode and will
be set to this every time the unit is turned on. The meter is
equipped with an auto-off feature to save battery power.
After 5 mins of inactivity, the unit will beep 5 times and turn
itself off. To resume operations, press the Power button
once. The auto-off feature can be disabled by pressing and
holding the Power button for at least three seconds when
powering on the meter. The EFM115 will beep once and the
display will read "A.OFF" to indicate the feature has been
disabled.
After the meter has been turned on, press the blue Ion Bal-
ance button once to switch into Ion Balance Mode. Refer to
section Operation: Ion Balance for more information.
The yellow Hold button will freeze the meter after it is
pressed once. The LED display will freeze the numerical
reading and the bar graph which allows the operator to read
the meter more easily and record data. To cancel "Hold

Mode" and resume testing, press the Hold button once
more.
The Orange Reset button sets the meter to a zero
charge.
Note: The Reset button is inoperative in "Hold
Mode".
Proper Measurement Distance
The EFM115 is equipped with two "Focus Rings" that are
beamed from the front of the meter in ensure proper
measuring distance. Two beams of light will form con-
centric circles when the meter is the correct 1" away
from the charged surface.
Note: If measuring at 1” is not possible, you can
take a measurement at 3"and multiply the result
by 2. You can also take a measurement 6" away
from the surface, and multiply the result by 3.
6

Operation: Field Meter
1. The field meter must be grounded properly
with the ground lead provided.
2. Press the Power Button once to activate
the meter. A single beep will indicate
proper operation.
3. The meter reading should be zero (0).
Use the Reset button if it is not.
4. Hold the field meter 1" away from a surface, using the
"Focus Rings" for proper distance.
5. A bar graph and a numerical LED readout displays the
voltage of the charged surface. Press Hold to freeze
the screen to better read the result.
6. Press the red Power Button to turn off meter.
Understanding the Results
Easy-to-read LCD Display
The LCD Display on the EFM115 is divided into three sec-
tions. The upper left section displays a bar graph in blue
to indicate a negative polarity. The upper right section
displays a bar graph in red to indicate a positive polarity.
The lower section display numerical values, voltage
measurement and function sections.
7
For the negative polarity voltage
Functions in use
Battery Condition Measurement Unit
Voltage
For the positive polarity voltage

The EFM115 is calibrated for the voltage range 0 to +
20kV. The meter displays results in Kilovolts (kV). 1
kV = 1000 volts (V). A display of (+) or (-) next to
the numerical results represents the polarity of the
static charge. Also, the red bar graph indicates a
positive polarity and the blue bar graph represents
negative.
If the reading blinks at [+ 22.0] with a continuous
warning sound during a measurement, the maximum
voltage reading has been reached or exceeded.
Note: Attempts to measure too high a static
charge may damage the sensor.
Operation: Ion Balance
The compact and lightweight design of the EFM115
makes it ideal for periodic verification of ionizers. The
EMF115 can be used to measure low voltages up to
200V in ion balance mode.
1. Before starting ion balance measure, remove the
charge plate from the bottom of the meter by de-
pressing the release buttons on either side of the
meter.
2. Insert the charge plate into the top of the meter
until it clicks into place.
3. For a reliable measurement, the field meter must
be grounded properly with the ground lead pro-
vided.
4. To access “Ion Balance Mode”, turn on the meter
and press the blue Ion Balance button. The dis-
play will read "IB".
8

5. Turn the meter towards an uncharged surface. The
meter reading should be zero (0). Press the Reset
button is it is not.
6. Hold the meter centered in front of the ionizer at
any convenient repeatable distance, such as one
foot.
7. A bar graph and a digital display on the EFM115
display the ion balance information. Press Hold to
freeze the display.
8. When finished with Ion Balance Mode, depress the
charge plate release buttons and return the plate
to the bottom of the meter until it clicks.
Proper installation of the charge plate
9
Charge Plate Press side buttons
To release Plate insertion slot Proper placement

About Transforming Technologies
Since 1998, Transforming Technologies has helped elec-
tronic manufacturing facilities to protect their products and
processes from the many serious problems associated with
static electricity.
Transforming Technologies offers a wide range of unique
and outstanding products to detect, protect, eliminate and
monitor electrostatic charges. Our products are integral com-
ponents of an effective static control program.
Service and Warranty
Transforming Technologies, LLC provides a limited war-
ranty for the Model EFM115. All new products are guaranteed
to be free from defects in material and workmanship for a pe-
riod of one (1) year from the date of shipment. Liability is lim-
ited to servicing (after evaluating, repairing or replacing) any
product returned to Transforming Technologies. The company
does not warrant damage due to misuse, neglect, alteration
or accident. In no event shall Transforming Technologies be
liable for collateral or consequential damages.
To receive service under warranty, please contact Trans-
forming Technologies Technical Support.
3719 King Rd | Toledo, OH 43617 | P: 419-841-9552 | F: 419-841-3241 | [e-mail]