Desco TB-3081 Installation and operating instructions

TB-3081 Page 1 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Body Voltage Meter
Installation, Operation and Maintenance
Description
The Desco 19431 Body Voltage Meter is a portable
measuring system that allows analysis of charge levels
accumulated on the human body according to ANSI/
ESD STM97.2. The Body Voltage Meter measurement
may be logged using internal memory. Logged
measurements can be exported and further reviewed on
a PC. Graphs of measurements can be displayed on the
LCD display for quick evaluation.
Each Body Voltage Meter is calibrated with accepted
procedures and standards traceable to the National
Institute of Standards and Technology (NIST) and
includes a NIST certificate.
June 2021
“A compliance verification plan shall be established to
ensure the organization’s fulfilment of the requirements
of the plan. Process monitoring (measurements) shall be
conducted in accordance with a compliance verification
plan that identifies the technical requirements to be
verified, the measurement limits and the frequency at
which those verifications shall occur. The compliance
verification plan shall document the test methods
used for process monitoring and measurements. If the
organization uses different test methods to replace
those of this standard, the organization shall be able
to show that the results achieved correlate with the
referenced standards. Where test methods are devised
for testing items not covered in this standard, these shall
be adequately documented including corresponding
test limits. Compliance verification records shall be
established and maintained to provide evidence of
conformity to the technical requirements. The test
equipment selected shall be capable of making the
measurements defined in the compliance verification
plan.” (EN 61340-5-1 clause 5.2.4)
Packaging
1 Body Voltage Meter
1 Walking Test Probe
1 Black 8-Pin DIN to USB Cable, 1.8 m long
1 Black Ground Cord with Crocodile Clip, 5 m long
1 Lanyard with Hook
1 Certificate of Calibration
Figure 1. Desco 19431 Body Voltage Meter
TECHNICAL BULLETIN TB-3081

TB-3081 Page 2 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Features and Components A. Settings Button: Press to enter SETTINGS mode.
B. Left and Right Buttons: Press to cycle through the
menus.
C. Cursor Button: Press to advance the cursor.
D. Exit Button: Press to power the meter ON and OFF.
This button is also used to exit SETTINGS and MENU
modes.
E. Start / Stop Button: Press to start and stop a
measurement. This button is also used to increase the
value of settings when in SETTINGS mode.
F. Ground Jack: Common point ground for the meter.
Connect the included black ground cord here.
G. Probe / PC Connector: Connect the included test
probe when taking measurements. Connect the included
DIN to USB cable when exporting data onto a PC.
H. Ground Jack: Common point ground for the meter.
Connect the included black ground cord here.
I. Ground Touch Plate: Touch to ground the operator
prior to taking body voltage measurements.
Settings Mode
Press and hold the Settings button for 1 second to enter
the SETTINGS mode. There are 4 menus available:
1. V RANGE
2. CLOCK
3. DISPLAY
4. ° C/ ° F
Press the Left button to move to the previous menu.
Press the Right button to move to the next menu.
Press the Exit button to exit from SETTINGS mode.
V. Range Menu
Figure 2. Body Voltage Meter features and components
I
F G H
Adjust the voltage range for new and saved graphs.
Press the Cursor button to advance the cursor, and
press the Start / Stop button to increase the value.
NOTE: AUTO range is only available for saved graphs.
E
A
B B
D
C

TB-3081 Page 3 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Clock Menu Monitor Mode
Adjust the date and time settings. Press the Cursor
button to advance the cursor, and press the Start / Stop
button to increase the value.
Display Menu
Adjust the contrast of the LCD display (0 to 9). The
default contrast setting is 5. Press the Start / Stop
button to increase the value.
° C/ ° FMenu
Choose Celsius ( ° C) or Fahrenheit ( ° F ) for the
temperature unit of measurement. Press the Start / Stop
button to toggle the setting.
Operation Modes
There are 5 operation modes available:
1. MONITOR
2. NEW
3. VIEW
4. CLEAR
5. COM
Press the Left button to move to the previous mode.
Press the Right button to move to the next mode.
Press the Start / Stop button to enter the selected mode.
Press the Exit button to exit the selected mode.
Allows on-the-go measurements without saving any
data.
New Mode
Records new graph.
View Mode
Views saved graphs.
Clear Mode
Deletes last or all saved graphs.
COM Mode
Exports data to PC using supplied 8-Pin DIN to USB
cable.

TB-3081 Page 4 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Operation
Using the Meter
1. Press the EXIT button to power the meter.
2. Hold the test probe and momentarily touch the
ground touch plate located on the back of the unit.
Figure 4. Momentarily touching the ground touch plate to
ground the operator
Installation
1. Remove the meter from the carton.
2. Connect the included ground cord to one of the
two ground jacks located at the top of the meter.
Connect the opposite end of the ground cord to
equipment ground.
3. Connect the test probe to the probe connector
located at the top of the meter.
4. Press the EXIT button to power the meter.
5. The meter is now ready for use.
Figure 3. Setup of the Body Voltage Meter
3. Verify the Body Voltage Meter is zeroed by toggling
to the MONITOR menu and reading the measured
value. It should be 0 V. Zero the Meter if required by
toggling to the ZERO menu.
Monitor Mode
1. Toggle to MONITOR mode on the meter, and press
the Start / Stop button.
2. The display will show the electrical potential present
on the probe.
3. A beeping sound (every second) indicates that the
meter is measuring. This is to ensure the unit is not
left in measuring mode unintentionally and cause
the battery to drain.
4. To stop the measuring process, press the Start /
Stop or Exit buttons.

TB-3081 Page 5 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Datalogger Mode
1. Toggle to NEW mode on the meter and press the
Start / Stop button.
2. After a 3 second count-down, the Body Voltage
Monitor will log a graph of the walking test.
3. The graph will show the positive and negative peak
voltages measured during the test.
Downloading Data to a PC
1. Download and install the WT Manager software.
2. Connect the Body Voltage Meter to a PC using the
included Black 8-Pin DIN to USB Cable.
3. Toggle to COM mode on the meter.
4. Run the WT Manager software and select the
appropriate port from the drop-down menu.
Figure 5. Using the Body Voltage Monitor
4. To stop the test, press the Start / Stop button.
5. Press the Left or Right buttons to scroll through the
graph for quick evaluation.
6. Press the Start / Stop button again to save or
discard the graph. Press Start / Stop button to save
or the Cursor button and Start / Stop button to
discard the graph.
Figure 6. Selecting a COM port using the WT Manager
software
Figure 7. Viewing the body voltage of an ungrounded
operator in the WT Manager software

TB-3081 Page 6 of 6 © 2021 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone]
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Website: Desco.com
Specications
Voltage Range ±1050 V
Accuracy ±5 %
Resolution 1 V
Input Resistance 1014 ohms
Power Supply 6 AA alkaline batteries
Battery Auto-Shut O󰀨
Timer
10 minutes
Display Graphic LCD 128 x 64 pixel,
68 mm x 51 mm
Memory Capacity 10 graphs
Sample Rate 200 Hz
Max Total Graphs
Duration
2 minutes and 30 seconds
PC Interface USB
Operating Temperature 41 ºF to 85 ºF (5 ºC to 30 ºC)
Environmental
Requirements
Indoor use only at altitudes
less than 6500 ft. (2 km)
Maximum relative humidity of
80 % up to 85 °F (30 °C)
Dimensions
(meter)
9.6" x 5.1" x 2.4"
(243 mm x 130 mm x 60 mm)
Dimensions
(probe)
Ø 1.4" x 5.1"
(Ø35 mm x 130 mm)
Weight
(meter with batteries)
1.4 lbs (650 g)
Weight
(probe)
0.6 lbs (0.27 kg)
Country of Origin Italy
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the Desco Warranty -
Desco.com/Limited-Warranty.aspx
Maintenance
Battery Replacement
Replace the batteries if the battery indicator on the Body
Voltage Meter begins blinking. Open the battery cover,
replace the 6 alkaline batteries, and close the battery
compartment.
Figure 9. Replacing the Batteries on the Body Voltage
Meter
Figure 8. Viewing the body voltage of a grounded
operator in the WT Manager software