60640 Desco, 60640 Datasheet - Page 3

• Manufacturer Part Number: 60640
• Description: Chargebuster Overhead Ionizer
• Manufacturer: Desco

Specifications of 60640

• Ionizer Type: Overhead
• Flow Rate Max: 200CFM
• Depth: 6.5"
• Width: 24"
• Height: 3.5"
• Supply Voltage Vac: 120V
• Mounting Type: Rigid Or Suspended
• Body Material: Steel
• Rohs Compliant: NA
• Color: White

TB-3031 Page 3 of 4
Figure 6. Neutralization (discharge) times - 3 fan ionizer
Note: Reference ANSI/ESD STM 3.1. The distance from
the ionizer to the charged plate is 18”.
Specifications
AIR VOLUME -
150-300cfm
AIR VOLUME -
100-200cfm
BALANCE (OFFSET VOLTAGE)
±10 volt, typical; ±20 volts maximum at 65°F to 80°F, R.H.:
15% to 65%
CHASSIS
White powder coated steel housing
DIMENSIONS -
3.5" H x 6.5" W x 37" L
(8.9cm H x 16.5cm W x 94.0 cm L)
DIMENSIONS -
3.5" H x 6.5" W x 24" L
(8.9cm H x 16.5cm W x 61.0cm L)
EMITTER POINTS
.050" diameter pure tungsten for improved mechanical
strength and ionization stability
FUSE
400mA slow blow
HIGH VOLTAGE POWER SUPPLY
5.5 kV DC nominal
INPUT POWER
AC line power, 120 VAC, 50/60Hz
(can be changed internally to 220V)
ION EMISSION
Steady state DC with sense feedback
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Web Site:
60473
60640
60473
60640
:
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
MOUNTING
May be rigid-mounted or suspended from ceiling
OZONE
Less than 0.05ppm
WEIGHT -
10 lbs. (4.54 kg)
WEIGHT -
7 lbs. (3.18 kg)
Compliance Verification
ANSI/ESD S20.20-2007 added Compliance Verification
columns to the Tables. The test method for Compliance
Verification is ESD TR53. Ionizers should be tested
periodically for both polarity’s discharge times, and for offset
voltage balance per ESD Association Technical Report ESD
TR53 Compliance Verification of ESD Protective Equipment
and Materials. The most accurate tool to use for this is a
Charged Plate Monitor. Alternatively, a portable battery
operated Ionization Test Kit can be used.
Per ESD TR 53 ANNEX A “Test Frequency, The objective
of the periodic test procedures listed in this document is
to identify if significant changes in ESD equipment and
materials performance have occurred over time.
Test frequency limits are not listed in this document,
as each user will need to develop their own set of test
frequencies based on the critical nature of those ESD
sensitive items handled and the risk of failure for the ESD
protective equipment and materials.
Per ESD TR53, all the test locations of @3.1 are not
required; rather “Measurements should be made at the
location where ESD sensitive items are to be ionized. For
many EPA ESD Control items sampling is appropriate for
Compliance Verification, however, best practice is to test
each ionizer.
Calibration
When an alarm sounds, most users will clean emitter
pins (see Maintenance / Alarms section) and calibrate the
ionizer. Per ESD TR 53 section 5.3.6.7.1 “The best practice
is to measure the offset voltage and discharge times, clean
the unit, including emitter points and air filters if present,
offset voltage to zero (if adjustable), and then repeat offset
voltage and discharge time testing. If the unit does not
meet offset voltage specifications or minimum established
discharge time limits, further service is indicated.
Manufacturers should provide details on service procedures
and typical service intervals.”
60473
60640
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