TECHNICAL BULLETIN TB-6563
Air Assisted Ion Bar System
Installation, Operation and Maintenance
Unpacking and Inspection
Made in the
United States of America
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 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 Air Assisted Ion Bar
Item #
50920
50921
50922
50923
50924
50925
50926
50855
50856
50940
50941
50950
50951
50953
Description
Air Assisted Ion Bar Assembly, 12", 4 Emitters
Air Assisted Ion Bar Assembly, 24", 8 Emitters
Air Assisted Ion Bar Assembly, 36", 12 Emitters
Air Assisted Ion Bar Assembly, 48", 16 Emitters
Air Assisted Ion Bar Assembly, 60", 20 Emitters
Air Assisted Ion Bar Assembly, 72", 24 Emitters
Air Assisted Ion Bar Assembly, 96", 32 Emitters
Pulsed Ion Bar Controller, North America
Pulsed Ion Bar Controller, Asia
Controller with Recessed Potentiometer Adjustment, 120V
Controller with Recessed Potentiometer Adjustment, 220V
Ion Bar 2-to-1 Connector Set (2 per pack)
Emitter for Air Assisted Ion Bar
Air Assisted Filter Regulator with Hose
Description
The EMIT Air Assisted Ion Bar System has been
designed to effectively 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 latch-
up. 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 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.
The EMIT 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”.
Installation
1.
Install the Controller console on or near the target
area. It must be close enough to connect to the Ion
Bar.
Locate and attach the Ion bar in a posistion so that
the air ions are directed toward the target area.
Connect clean dry compressed air or gas to the Ion
Bar’s air fitting with a 1/4" flexible plastic tube.
Connect the Ion Bar to the back of the Controller
console.
Plug the Controller console unit into an appropriate
electrical outlet.
2.
3.
4.
5.
EMIT
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website:
DescoEMIT.com
TB-6563
Page 1 of 4 June 2014
© 2014 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 (offset 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 Verification steps after
all adjustments.
IMPORTANT
The Ion Bar System has been designed to minimize
effects of localized static charges. If your processing
involves generation of considerable static charges, you
may need more aggressive equipment. EMIT offers a
complete line of ionizers: bench top, overhead and hand
ion guns to meet all ionizing requirements.
DISCHARGE TIMES
Recommended air pressure:
2-10 PSI nominal, 15 PSI maximum
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
12
18
12
Average Time
(seconds)
< 10
<4
<4
<2
Ion Bar Controllers
Figure 4. EMIT 50940 Controller with Recessed
Potentiometer Adjustment
Figure 6. EMIT 50855 Controller with Digital Adjustment
Controller Specifications
ITEMS 50940, 50941
Weight:
Cable:
Operating Voltage:
Dimensions:
ITEMS 50855, 50856
Weight:
Operating Voltage:
1.9 lbs
4' Length
120VAC 50/60 Hz
220 VAC 50/60 Hz
5.7" L x 5.1" W x 1.7" H
1.6 lbs
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
(50940)
(50941)
NOTE:
This data applies to all EMIT Air Assisted
Ion Bars. Values will vary with the environment and
particular applications.
EMIT
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website:
DescoEMIT.com
TB-6563
Page 3 of 4
© 2014 DESCO INDUSTRIES, INC.
Employee Owned
CONTROLLER COMPARISON CHART
50940, 50941
Remote
Control
Input Power
Ionization
Balance
No
120 / 220VAC
Pulse DC
DUTY CYCLE
Potentiometer
Adjustment
Potentiometer
Adjustment from
.05 sec to 1 sec.
50855, 50856
Yes
24VDC
Pulse DC
DUTY CYCLE
Digital Adjustment and
Display
Digital Adjustment
Increments from .01
sec to 10 sec.
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions
See EMIT’s Warranty -
http://emit.descoindustries.com/Warranty.aspx
Period
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)
Compliance Verification per ANSI/ESD S20.20 is to
be per ESD TR53 using a Charged Plate Monitor or a
SP3.3 Ionization Test Kit.
Specifications and procedures subject to change
without notice.
EMIT
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website:
DescoEMIT.com
TB-6563
Page 4 of 4
© 2014 DESCO INDUSTRIES, INC.
Employee Owned
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