CALIBRATION OF THE
MODEL 41201, 41202, 41203
WRIST STRAP TESTERS
The models 41201, 41202, and 41203
testers utilize the identical test unit.
The difference between the three
models is the hardware that is
included with each unit. The model
41201 includes only the tester, model
41202 includes the tester and a metal
foot plate, while the 41203 is the
tester and metal test stand assembly.
This test unit is designed with two
separate test circuits with distinct pass
fail ranges. The wrist strap test circuit
incorporates a 750 Kilohm -
10 Megohm pass range while the
footwear test circuit is set to pass at
750 Kilohm - 100 Megohm. Each test
circuit needs to be tested individually.
For detailed information on these
testers ask for Tech Brief PS-2057.
Wrist Strap Test Circuit
Step 1:
Connect one of the test leads to
common point banana jack labeled “E”
on 41230. Connect the opposite end of
test lead to the 41201’s wrist cord jack
located on the face of the unit.
Step 2:
Connect the second test lead
to the 675 Kilohm jack labeled “A” on
41230. Touch the opposite end of test
lead to the test plate and press down
with enough pressure to activate the
test circuit. Observe the LED’s for the
proper response as indicated below.
Be sure to hold the cord at an
insulated point, so that the resistance
value is not affected by the body.
Resistance Value
Test Output - LED
(In Ohms)
Red jack “A” - 675K:
Red (Low - hazard)
Green jack “B” - 825K: Green (OK - in limits)
Green jack “C” - 8.5M: Green (OK - in limits)
Yellow jack “D” - 11.5M: Red (High resistance)
Step 3:
Repeat the procedure testing
across jacks B, C, and D. The different
resistance ranges should give the
display shown above. If the tester does
not meet calibration specifications,
contact factory for calibration, or ask
for Tech Brief PS-2057.
Figure 4. Testing 41201 for “PASS” and
“FAIL” wrist strap test circuit
Foot Wear Test Circuit
Step 1:
Connect one of the test leads
to common point banana jack labeled
“E” on 41230. Connect the opposite
end of test lead to the 41201’s foot
plate ground jack located on the side
of the unit.
Step 2:
Connect the second test lead
to the 675 Kilohm jack labeled “A” on
41230. Touch the opposite end of test
lead to tester’s test plate and press
down with enough pressure to activate
the test circuit. Observe the LED’s for
the proper response as indicated
below. Be sure to hold the cord at an
insulated point, so that the resistance
value is not affected by the body.
Resistance Value
Test Output - LED
(In Ohms)
Red jack “A” - 675K:
Red (Low-hazard)
Green jack “B” - 825K: Green (OK-in limits)
Green jack “C” - 80M: Green (OK-in limits)
Yellow jack “D” - 120M: Red (High resistance)
Figure 5. Testing 41201 for “PASS” and
“FAIL” ranges for footwear circuit as
indicated on calibration unit.
Step 3:
Repeat the procedure testing
across jacks B, C (80 Megohm), and
D (120 Megohm). The different
resistance ranges should give the
display shown above. If the tester does
not meet calibration specifications,
contact factory for adjustment infor-
mation, or ask for Tech Brief PS-2058.
PS-2006
07/05 Page 2 of 2
Specifications
Power Source: Passive device, no
power source required
Resistance Ranges -
Wrist straps:
Low - 675 Kilohm
Pass - 825 Kilohm
Pass - 8.5 Megohm
High - 11.5 Megohm
Foot wear:
Low - 675 Kilohm
Pass - 825 Kilohm
Pass - 80 Megohm
High - 120 Megohm
Calibration:
NIST traceable
Accuracy
±2%
Weight:
10 ounces
Dimensions:
4.50" x 3.25" x 1.00"
Limited Warranty
ESD Systems.com expressly warrants that for a period
of one (1) year from the date of purchase, our 41230’s
will be free of defects in material (parts) and
workmanship (labor). Within the warranty period, a
unit will be tested, repaired or replaced at our option,
free of charge. Call Customer Service at 508-485-
7390 for a Return Material Authorization (RMA) and
proper shipping instructions and address. Include a
copy of your original packing slip, invoice, or other
proof of purchase date. Any unit under warranty should
be shipped prepaid to our factory. Warranty repairs will
take approximately two weeks.
If your unit is out of warranty, ESD Systems.com will
quote repair charges necessary to bring your unit up to
factory standards. Call Customer Service at 508-485-
7390 for a Return Material Authorization (RMA)
proper shipping instructions and address. Ship your unit
prepaid.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS
MADE IN LIEU OF ALL OTHER PRODUCT
WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE WHICH ARE
SPECIFICALLY DISCLAIMED. The express warranty
will not apply to defects or damage due to accidents,
neglect, misuse, alterations, operator error, or failure to
properly maintain, clean or repair products.
Limit of Liability
In no event will ESD Systems.com or any seller be
responsible or liable for any injury, loss or damage,
direct or consequential, arising out of the use of or the
inability to use the product. Before using, users shall
determine the suitability of the product for their
intended use, and users assume all risk and liability
whatsoever in connection therewith.
Visit our online
library of Tech Briefs:
http://www.esdsystems.com
432 NORTHBORO ROAD CENTRAL
MARLBORO, MA 01752-3170
PHONE (508) 485-7390
FAX (508) 480-0257
© 2005 DESCO INDUSTRIES INC.
Employee Owned
