TECHNICAL BULLETIN TB-6562
Non-Air Assisted Ion Bar System
Installation, Operation and Maintenance
Unpacking and Inspection
EMIT Controller and Bar Assemblies were carefully
packed at the factory in a container designed to protect
them from accidental damage. Nevertheless, EMIT
recommends careful examination of the carton and its
contents for any damage. If damage is evident, do not
destroy the carton or packing material. Immediately
notify the carrier of a possible damage claim. Shipping
claims must be made by the consignee to the delivering
carrier.
The Non-Air Assisted Ion Bars are available in several
sizes. There are six Controller options and several
accessory items. See the following table for the list of
available item numbers.
Figure 1. EMIT Non-Air Assisted Ion Bar
Description
The EMIT Non-Air Assisted Ion Bar System has been
designed to eectively eliminate localized static charges
that exist in the work area.
Ionizers are useful in preventing electrostatic charge
generation, ElectroStatic Discharge, ElectroStatic
Attraction, as well as preventing equipment latchup. Per ANSI/ESD S20.20 section 6.2.3.1. Protected
Areas Requirement states: “Ionization or other charge
mitigating techniques shall be used at the workstation
to neutralize electrostatic fields on all process essential
insulators if the electrostatic field is considered a
threat.” Air ionization can neutralize the static charge
on insulated and isolated objects by producing separate
charges in the molecules of the gases of the surrounding
air. When an electrostatic charge is present on objects
in the work environment, it will be neutralized by
attracting opposite polarity charges from the ionized
air. Note that ionization systems should not be used
as a primary means of charge control on conductors or
people. (Reference: EN 61340-5-2 clause 5.2.9).
The Non-Air Assisted Ion Bar System is a pulsed DC
ionizer. The bar’s emitters have alternating polarities
over the length of the bar. This design results in less ion
recombination than when the same emitter is used to
output both polarities.
Item # Description
50900 Non-Air Ion Bar Assembly, 12", 4 Emitters
50901 Non-Air Ion Bar Assembly, 24", 6 Emitters
50902 Non-Air Ion Bar Assembly, 36", 8 Emitters
50903 Non-Air Ion Bar Assembly, 48", 12 Emitters
50904 Non-Air Ion Bar Assembly, 60", 14 Emitters
50905 Non-Air Ion Bar Assembly, 72", 18 Emitters
50906 Non-Air Ion Bar Assembly, 96", 24 Emitters
50855 Pulsed Ion Bar Controller, North America
50856 Pulsed Ion Bar Controller, Asia
50940 Controller with Recessed Potentiometer Adjustment, 120V
50941 Controller with Recessed Potentiometer Adjustment, 220V
50950 Ion Bar 2-to-1 Connector Set (2 per pack)
50952 Emitter for Non-Air Ion Bar
Installation
1. Install the Controller console on or near the target
area. It must be close enough to connect to the Ion
Bar.
2. Locate and attach the Ion bar in a posistion so that
the air ions are directed toward the target area.
3. Connect the Ion Bar to the back of the Controller
console.
4. Plug the Controller console unit into an appropriate
electrical outlet.
Made in the
United States of America
The EMIT Non-Air Assisted Ion Bar System meets the
ANSI/ESD S20.20 required limit of less than ± 50 volts
offset voltage (balance) tested in accordance with ANSI/
ESD STM3.1. Per S20.20 Discharge Time required
limits are “user defined”.
EMIT - 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website: DescoEMIT.com
TB-6562 Page 1 of 4
February 2021
© 2021 DESCO INDUSTRIES, INC.
Employee Owned
NOTES:
One EMIT Controller Console will power up to 40 emitters. It is possible to daisy-chain bars together as long as
the total number of emitters does not exceed 40. For example, the EMIT 50902 has 8 emitters (40 ÷ 8 = 5), so up
to 5 EMIT 50902 Bar Assemblies can be daisy-chained together using 1 Controller Console. Daisy-chain bars are
special order only.
The EMIT 50950 2-to-1 Connector Set may be used to power two Ion Bars with one Controller Console.
Ion Bar #1
Ion Bar #2
50950
Ion Bar Controller
Figure 2. Using the 50902 2-to-1 Connector Set to Power Two Ion Bars
Ion Bar Sizes and Dimensions
Figure 3. EMIT Non-Air Assisted Ion Bar dimensions
TB-6562 Page 2 of 4
Item # Length Emitters Emitter
Spacing
50900 12" 4 3" 2 1" 1.5"
50901 24" 6 4" 2 1" 2"
50902 36" 8 4" 2 3" 4"
50903 48" 12 4" 2 3" 2"
50904 60" 14 4" 2 3" 4"
50905 72" 18 4" 3* 4" 2"
50906 96" 24 4" 3* 4" 2"
Mounting
Holes
Dim A Dim B
NOTE: Contact manufacturer for custom dimensions
EMIT - 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website: DescoEMIT.com
© 2021 DESCO INDUSTRIES, INC.
Employee Owned
Operation
NOTE: The following instructions apply to the 50940 and
50941 Controllers only. Please see technical bulletin
TB-6570 for operation instructions on the 50855 and
50856 Digital Controllers.
There are two adjustments that can be made on the
controller: BALANCE (oset voltage) and RATE.
The BALANCE of positive and negative ion output can
be adjusted to increase polarity bias by turning the
BALANCE CONTROL, slowly turning clockwise to
increase positive and decrease negative ON time pulses,
or counter-clockwise to increase negative and decrease
positive ON time pulses. The RATE or pulse frequency
can be adjusted down to one pulse per second or up to
20 pulses per second by slowly turning the RATE
CONTROL clockwise to increase and counter-clockwise
to decrease the frequency.
REMEMBER
It is important to verify calibration after any adjustments
and before using the Ion Bar System around sensitive
electronics. Repeat the Balance Verication steps after
all adjustments.
Ion Bar Controllers
Figure 4. EMIT 50940 Controller with Recessed
Potentiometer Adjustment
IMPORTANT
The Ion Bar System has been designed to minimize
eects of localized static charges. If your processing
involves generation of considerable static charges, you
may need more aggressive equipment. EMIT oers a
complete line of ionizers: bench top, overhead and hand
ion guns to meet all ionizing requirements.
DISCHARGE TIMES
Measurements are taken with a Charged Plate Monitor
placed below two consecutive emitters.
Pulsing rate is adjustable from 1 to 20 Hz that will need
to be customized depending on application requirement.
Discharge Times
(±1,000V to ±100V)
Controller set to
2 pulses / sec (Hz)
Controller set to
2 pulses / sec (Hz)
Controller set to
1 pulse / sec (Hz)
Controller set to
1 pulse / sec (Hz)
Distance
(inches)
18 < 20
12 < 5
18 < 6
12 < 2
Average Time
(seconds)
NOTE: This data applies to all EMIT Non-Air Assisted
Ion Bars. Values will vary with the environment and
particular applications.
Figure 6. EMIT 50855 Controller with Digital Adjustment
Controller Specications
ITEMS 50940, 50941
Weight: 1.9 lbs
Cable: 4' Length
Operating Voltage: 120VAC 50/60 Hz (50940)
220 VAC 50/60 Hz (50941)
Power Consumption: 30 W
Dimensions: 5.7" L x 5.1" W x 1.7" H
ITEMS 50855, 50856
Weight: 1.6 lbs
Operating Voltage: 120VAC 50/60 Hz (50855)
24VDC Power Adapter
220 VAC 50/60 Hz (50856)
24VDC Power Adapter
Dimensions: 4.9" L x 5.7" W x 1.7" H
TB-6562 Page 3 of 4
EMIT - 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website: DescoEMIT.com
© 2021 DESCO INDUSTRIES, INC.
Employee Owned
CONTROLLER COMPARISON CHART
50940, 50941 50855, 50856
Remote
Control
Input Power 120 / 220VAC 24VDC
Ionization Pulse DC Pulse DC
Balance DUTY CYCLE
Period Potentiometer
No Yes
DUTY CYCLE
Potentiometer
Adjustment
Adjustment from
.05 sec to 1 sec.
Digital Adjustment and
Display
Digital Adjustment
Increments from .01
sec to 10 sec.
Maintenance
“All ionization devices will require periodic maintenance
for proper operation. Maintenance intervals for
ionizers vary widely depending on the type of ionization
equipment and use environment. Critical clean room
uses will generally require more frequent attention. It is
important to set-up a routine schedule for ionizer service.
Routine service is typically required to meet quality audit
requirements.” (ESD Handbook ESD TR20.20 section
5.3.6.7 Maintenance / Cleaning)
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions
See the EMIT Warranty -
DescoEMIT.com/Warranty.aspx
Compliance Verication per ANSI/ESD S20.20 is to
be per ESD TR53 using a Charged Plate Monitor or a
SP3.3 Ionization Test Kit.
Specications and procedures subject to change
without notice.
TB-6562 Page 4 of 4
EMIT - 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website: DescoEMIT.com
© 2021 DESCO INDUSTRIES, INC.
Employee Owned
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