Trek 821HH User Manual
Trek Model 821HH
Hand-Held Electrostatic Voltmeter
Trek’s Model 821HH Infinitron Hand-Held Electrostatic
Voltmeter represents the next generation of contacting
precision surface voltage measuring instruments, providing
input characteristics far beyond the limits of any currently
available hand-held voltmeter product.
The Model 821HH can easily measure the voltage level of both
conductive and insulative objects and surfaces with virtually
zero charge transfer to the measurement probe. This results in
stable high accuracy voltage measurement capability for ESDsensitive devices.
Key Specifications
Measurement Range:
!
Voltage Display Accuracy
!
Input Characteristics: Resistance greater than 1 x 10 W
!
Voltage Monitor Output: Scale factor at 1/1000
!
0 to ±2 kV DC or peak AC
Better than 1% of full scale, ±1 digit
Capacitance less than
1 x 10 F
14
-14
®
Typical Applications Include
! Semiconductors
LEDs
!
MR head sensors
!
!
Other ESD sensitive devices
Features and Benefits
!
Probe tip assumes the voltage level of the measured object’s surface as the tip approaches resulting in no current
flow at the time of contact.
!
Battery or line operation
!
Easy to read LCD display
Records voltage, temperature and humidity
!
Data graphing capabilities
!
!!NIST-traceable Certificate of Calibration provided with each unit
compliant
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
716-438-7555 • 716-201-1804 (fax) • www.trekinc.com • sales@trekinc.com
Features (cont.)
Menu
A push-button for entering the menu system to
Review Data, Erase Memory and Set Auto Off
functions
Mechanical
Dimensions
240 mm H x 140 mm W 52.5 mm D
(9.5” H x 6” W x 2” D)
Weight
1.13 kg (2.5 lb)
Ground Reference
Receptacle
Banana Jack
Voltage Monitor
Connector
2.5 mm plug
Operating Conditions
Temperature
15°C to 35°C (59°F to 95°F)
Relative Humidity
5% to 75%, noncondensing
Altitude
To 2000 meters (6561.68 ft.)
Electrical
Power Requirements
Internal NiMH battery or
External 15 V @ 1 A Supply / Charger
Battery Operating
Time
Greater than eight hours of continuous
operation
Supplied Accessories
Operators’ Manual
PN: 24012 Manual with software
AC/DC Adapter
15 V @ 1 A universal AC/DC adapter
Output Monitor Cable
With 2.5 mm plug
Other
USB Cable
Certifications
Calibration
TREK, INC. certifies that each Model 821HH is
tested and calibrated to specifications using
measurement equipment traceable the National
Institute of Standards and Technology or
traceable to consensus standards
CE Compliance
IEC 61010-1
Safety requirements for electrical equipment for
measurement, control and laboratory use - Part
1: General Requirements
IEC 61326-1
Electrical equipment for measurement, control
and laboratory use - Part 1: General
requirements
Model 821HH Specifications
Performance
Measurement Range
0 to ±2 kV DC or peak AC
Accuracy
At the Voltage
Monitor Output
Better than ±1% of full scale
At the Voltage
Display
Better than ±1% of full scale, ±1 digit
Bandwidth (-3 dB)
1000 V p-p sine wave: better than 1 kHz (-3 dB)
Input Characteristics
14
Resistance greater than 1 x 10 W
-14
Capacitance less than 1 x 10 F
-14
Current less than 1 x 10 A
Stability Drift with
Time (probe in free
air)
Less than 2 V/second
USB Data Rate
300 ms
Displayed Information
Voltage
0 to ±2000 V with a resolution of 1 V
Zero Offset
Battery Status
Time / Date
Temperature
Maximum and
Maximum Readings
Features
Automatic Shutoff
User settable: 5 minutes, 10 minutes, 15
minutes or disabled
Voltage Monitor
Output (2.5 mm jack)
An output provides a low-voltage replica of the
measured voltage
Scale
1/1000th of the measured voltage
Offset Voltage
Less than ±10 mV
Output Noise
Less than 10 mV rms *
Speed of Response
(10% to 90%)
Less than 500 µS for an input step change of
1 kV
Power ON/OFF
A push-button
Record / Hold
Pressing the Record / Hold push-button will
hold the measurement, while pressing and
holding the Record / Hold button for a period of
greater than 3 seconds will store the
measurement
*Measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter
Measurement and Power Solutions
Copyright © 2013 TREK, INC. All specifications are subject to change. 1304/JRB
TM
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