Desco Europe Charleswater 99090 Installation and operating instructions

PPE-5034.E Page 1 of 3 © 2018 DESCO INDUSTRIES INC
Employee Owned
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
Made in the
United States of America
Calibration Unit for Testers
Installation, Operation and Maintenance
Description
The Charleswater 99090 Calibration Unit is designed to
verify whether a tester is operating within specifications.
The Calibration Unit is a passive device and requires
no power source. The Calibration Unit is manufactured
with industry accepted test ranges for both wrist straps
and foot grounders. Both the wrist strap and footwear
pass range is set to 750K to 35M. The Charleswater
Calibration Unit is calibrated to NIST traceable
standards.
The Charleswater 99090 Calibration Unit is to be used
with the following items:
Item Description
225221 Portable Wrist Strap Tester
99037 Combo Tester
99038 Combo Tester with Stand and Foot Plate
Packaging
1 Calibration Unit
2 Test Leads with Banana Plug Terminals
1 Certificate of Calibration
July 2018
Figure 1. Charleswater 99090 Calibration Unit
Operation
WRIST STRAP TESTER
1. Plug one of the included test leads into the black
banana jack labelled “E” on the Calibration Unit.
Connect the opposite end of the test lead into the
yellow banana jack located on the 225221 Portable
Wrist Strap Tester.
TECHNICAL BULLETIN PPE-5034.E
2. Connect the second test lead to the red 675K
banana jack labelled “A” on the Calibration Unit.
Touch the opposite end of the test lead to test
plate on the Wrist Strap Tester and press down to
activate the test. Be sure not to touch the banana
plug or test plate with your skin.
3. Observe the response from the Portable Wrist Strap
Tester. The alarm should sound, and the LOW LED
should illuminate red.
4. Repeat the procedure for test points B (825K), C
(35M) and D (40M). The expected test results can
be found in the following table:
Test
Point
Resistance
Value
Tester
LED
Buzzer
A 675K FAIL LOW ON
B 825K PASS OFF
C 35M PASS OFF
D 40M FAIL HIGH ON
Figure 2. Connecting the test lead from banana jack
“E” on the Calibration Unit to the banana jack on the
Portable Wrist Strap Tester

PPE-5034.E Page 2 of 3 © 2018 DESCO INDUSTRIES INC
Employee Owned
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
Figure 4. Connecting the test lead from banana jack “E”
on the Calibration Unit to the WRIST STRAP banana
jack on the Combo Tester
COMBO TESTER
Testing the Wrist Strap Circuit
1. Plug one of the included test leads into the black
banana jack labelled “E” on the Calibration Unit.
Connect the opposite end of the test lead into the
yellow banana jack labelled “WRIST STRAP” on
the Combo Tester. Toggle the switch to the “WRIST
STRAP” position.
2. Connect the second test lead to the red 675K
banana jack labelled “A” on the Calibration Unit.
Touch the opposite end of the test lead to the
Combo Tester’s test switch, and press it down to
activate the test. Be sure not to touch the banana
plug or test plate with your skin.
3. Observe the response from the Combo Tester.
The alarm should sound, and the LOW LED should
illuminate red.
4. Repeat the procedure for test points B (825K), C
(35M) and D (40M). The expected test results can
be found in the following table.
Test
Point
Resistance
Value
Test Output
A 675K FAIL LOW
B 825K PASS
C 35M PASS
D 40M FAIL HIGH
Figure 5. Verifying the calibration of the wrist strap circuit
in the Combo Tester
Testing the Footwear Circuit
1. Plug one of the included test leads into the black
banana jack labelled “E” on the Calibration Unit.
Connect the opposite end of the test lead into the
yellow banana jack labelled “FOOT PLATE” on the
Combo Tester. Toggle the switch to the “FOOT
PLATE” position.
Figure 6. Connecting the test lead from banana jack “E”
on the Calibration Unit to the FOOT PLATE banana jack
on the Combo Tester
2. Connect the second test lead to the red 675K
banana jack labelled “A” on the Calibration Unit.
Touch the opposite end of the test lead to the
Combo Tester’s test switch, and press it down to
activate the test. Be sure not to touch the banana
plug or test plate with your skin.
3. Observe the response from the Combo Tester.
The alarm should sound, and the LOW LED should
illuminate red.
4. Repeat the procedure for test points B (825K), C
(35M) and D (40M). The expected test results can
be found in the following table.
Figure 3. Verifying the calibration of the Wrist Strap
Tester

PPE-5034.E Page 3 of 3 © 2018 DESCO INDUSTRIES INC
Employee Owned
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
Specifications
Accuracy ±5 %
Dimensions 3.2" L x 4.4" W x 0.9" H
(8.1 cm x 11.2 cm x 2.3 cm)
Weight 4 oz (0.1 kg)
Country of Origin United States of America
Figure 7. Verifying the calibration of the footwear circuit
in the Combo Tester
Test
Point
Resistance
Value
Test Output
A 675K FAIL LOW
B 825K PASS
C 35M PASS
D 40M FAIL HIGH
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the Desco Europe Warranty -
DescoEurope.com/Limited-Warranty.aspx