SCS
- 926 JR Industrial Drive, Sanford, NC 27332
East: (919) 718-0000 | West: (909) 627-9634 • Website:
TB-9111
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© 2021 DESCO INDUSTRIES, INC.
Employee Owned
Static Sensor & Air Ionizer Test Kit
Operation and Maintenance
Description
The SCS 770716 Static Sensor indicates surface
voltage and polarity on objects. The meter has a
measurement range of 0 to ±19.99 kV at a distance of
1 inch and a measurement accuracy of ±5%. It utilizes
a chopper-stablized sensor for use in both normal
and ionized environments. The meter’s enclosure is
dissipative and features a 7 mm snap and ground
cord for bonding to equipment ground. A rotary zero
knob sets the zero-reference point with finely tuned
precision, and a Hold button allows the user to “freeze”
a displayed measurement for evaluation. A LED range
indicator assists with placing the meter at the correct
distance from the object being measured.
The SCS 770717 Air Ionizer Test Kit includes and
utilizes the 770716 Static Sensor to measure the offset
voltage (balance) and charge decay of ionization
equipment. The Air Ionizer Test Kit also includes
a charger used to place a ±1000V charge on the
conductive plate, making it possible to also measure the
discharge times of air ionization equipment per ANSI/
ESD SP3.3 Periodic Verification of Air Ionizers.
Although not as accurate, the SCS Air Ionizer Test Kit
is designed to make measurements that correspond
to those made by using a charged plate monitor and
ANSI/ESD STM3.1. The Air Ionizer Test Kit provides
convenience and portability to test per ANSI/ESD SP3.3
Periodic Verification of Air Ionizers or Compliance
Verification ESD TR53. SCS recommends using the
770004 or 770005 Charged Plate Analyzer if precise
measurements are required.
All Static Sensors and Air Ionizer Test Kits are
calibrated to NIST standards and include a certificate.
“When any object becomes electrostatically charged,
there is an electrostatic field associated with that charge.
If an ESDS (ESD sensitive) device is placed in that
electrostatic field, a voltage may be induced on the
device. If the device is then momentarily grounded, a
transfer of charge from the device occurs as a CDM
(Charged Device Model) event. If the device is removed
from the region of the electrostatic field and grounded
again, a second CDM event will occur as charge (of
opposite polarity from the first event) is transferred from
the device.” (Handbook ESD TR20.20 section 2.7.5 Field
Induced Discharges)
The Static Sensor, Air Ionizer Test Kit, and its
accessories are available as the following item numbers:
Item
Description
Static Sensor
Air Ionizer Test Kit
Conductive Plate and Charger
Carrying Case for Air Ionizer Test Kit
September 2021
Made in the
United States of America
USER GUIDE TB-9111
Figure 1. SCS 770716 Static Sensor
Figure 2. SCS 770717 Air Ionizer Test Kit
