19253 Desco, 19253 Datasheet - Page 5

• Manufacturer Part Number: 19253
• Description: TESTER COMBO WS&FS W/ PLATE
• Manufacturer: Desco
• Type: Testerr

Specifications of 19253

• Features: Base Plate
• Power Supply Type: Battery (Optional AC Adapter)
• For Use With/related Products: Wrist Straps, Foot Plate
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 16-1098; 19253

TB-2040 Page 5 of 6
Observe the LEDs for the proper response as indicated. Be sure
to hold the cord at an insulated point, so that resistance value is
not affected by the body. Should testing reveal that the Tester is
not functioning properly, verify that the battery or power supply is
operating correctly.
Tester calibration can also be verified with the use of discrete
resistors and two banana-to-alligator cords.
Adjustment
Detailed adjustment instructions follow:
Equipment Required: - Small blade screwdriver or Trimpot
adjusting tool, manufacturer’s calibration box or a resistor decade
box or discrete resistors, with appropriate test leads.
PREPARATION OF THE UNIT:
I.
II.
Figure 15 . Back of the Combo Tester
CALIBRATION OF WRIST STRAP RANGES:
III. Connect resistance “A” from Table 1 OR 2 between the touch
IV. If required, adjust WSL trimpot to the point where the “FAIL
V.
VI. Connect resistance “C” (wrist strap range) and press the
VII. Finally, connect resistance “D” (wrist strap range) and press
VIII. Re-check to insure that all ranges are correct, then proceed
Make sure that a fresh 9 Volt alkaline battery is installed.
Orient tester so that it corresponds to Figure 15.
plate and the “WRIST CORD” banana jack. A banana plug
must be inserted in the banana jack to properly test the
wrist strap ranges. Press and hold the touch plate. The red
“FAIL LO” LED should illuminate.
LO” LED illuminates.
Connect resistance “B” and press the switch as in Step III.
The green “PASS” LED should illuminate. The WSL trimpot
may require a slight re-adjustment.
switch as in Step III. The green “PASS” LED should be on. If
required, adjust the WSH trimpot to the point where the green
“PASS” LED illuminates.
the swtich as in Step III. The “FAIL HI” red LED should be
on. The WSH trimpot may require re-adjustment.
to calibrate footwear ranges.
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website:
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
CALIBRATION OF FOOT WEAR RANGES:
RETURN UNIT TO SERVICE.
Unauthorized modifications will void the product warranty.
Servicing should be performed only at the factory. See warranty
section for repair information.
Specifications
Wrist Strap Circuit
FAIL HI
FAIL LO
Footwear Circuit
FAIL HI
FAIL LO
General Characteristics
Power
Operation
Readout
Accuracy
Weight
Height
Consider adding the
shall be selected to make measurements of appropriate properties
of the technical requirements that are incorporated into the ESD
program plan” as required by paragraph 6.1.3.1 of ANSI/ESD
S20.20.
I.
II.
III. Connect resistance “B” and press switch as in Step I. The
IV. Connect resistance “C” (footwear range) and press switch as
V.
VI. Re-check to insure that all footwear ranges are correct.
WRIST STRAP
RESISTANCE
FOOT WEAR
Connect resistance “A” from table 1 or 2, this time between
the touch plate and the “FOOTPLATE” banana jack on the
left side of the tester. For footwear calibration, press and
hold the touch plate. The red “FAIL LO” LED should be on.
If required, adjust FWL trimpot to the point where the “FAIL
LO” LED illuminates.
green “PASS” LED illuminates. The FWL trimpot may
require a slight re-adjustment.
in Step I. The green “PASS” LED should illuminate. If
required, adjust the FWH trimpot to the point where the green
LED illuminates.
Finally, connect resistance “D” (footwear range) and press
switch as in step I. The red “FAIL HI” LED should illuminate.
The FWH trimpot may require a slight re-adjustment.
RANGE
Factory set at 11.5 Megohms
Factory set at 675 Kilohms
Factory set at 120 Megohms
Factory set at 675 Kilohms
9 Volt battery or optional AC power supply
Resistance bridge
Three LED’s & audible alarm
±20%
12 pounds
39 inches
TABLE 1 - STANDARD RANGES
19250
FAIL LO
675K
675K
“A”
to your list of “test equipment [that]
PASS LO
825K
825K
“B”
Desco.com
HI
8.5M
PASS
80M
“C”
© 2009 DESCO INDUSTRIES INC.
FAIL HI
11.5M
120M
“D”
Employee Owned