Desco Limit Comparator, Инструкция по применению

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TB-3035 Page 2 of 3 Revision May 2009
© 2009 DESCO INDUSTRIES INC.
Employee Owned
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Fax (781) 575-0172 • Website: Desco.com
Testing High Circuit
– If the tester’s high range is
35Meg. Set the knob on model
19259
to “35M PASS”,
touch the TEST contact on the tester and you should
get a green LED for the left and right feet. Set the
knob on model
19259
to “35M HIGH”, touch the TEST
contact on the tester and you should get a yellow LED
for both the left and right feet. If the limit is set to 1Gig
on the tester, test at 1Gig on model
19259 , same for
10Meg and 100Meg. Disregard the test result for the
wrist strap, if the wrist strap circuit is on.
Testing Wrist Strap Circuit, refer to figure 2
To complete the wrist strap test, you will need to test
the low and high limits. Refer to the dipswitch setting
on the left side of the testers for wrist strap test ranges.
Manufacturer’s suggested default test range is 750K
low and 10Meg high for the US and 750K to 35Meg for
Europe.
Do not power down the tester. Using the 2 banana
leads included with model 19259 . Attach 1 of the
banana leads to the right side banana jack on model
19259 and connect the other end to the ground
symbol jack on the tester. Connect the last banana jack
to the left banana jack of model
19259 and the other
end to the “SINGLE – WIRE” banana jack. Note be sure
FOOTPLATE lead is removed.
Testing Low Circuit
- If the tester’s low range is set to
750K. Set the knob on model
19259
to the “750K LOW”
position. Touch the TEST contact down on the tester
and you should get a red LED for the Wrist strap.
Disregard the test result for the footwear. Set the knob
on model 19259
to “750K Pass”, touch the TEST
contact on the tester and you should get a green LED
for the wrist strap.
Testing High Circuit –
If the tester’s high range is
10Meg. Set the knob on model
19259
to “10M PASS,”
touch the TEST contact on the tester and you should
get a green LED for the wrist strap. Set the knob on
model 19259
to “10M HIGH”, touch the TEST contact
on the tester and you should get a yellow LED for the
wrist strap. If the limit is set to 35Meg on the tester, test
at 35Meg on model
19259 . Disregard the test result for
the footwear.
SPECIFICATIONS AND DIMENSIONS
Charge Detection
When the operator is connected to the remote and
accumulates a voltage greater than ± 1.25 volts, the
CHARGE LED (red) will display in its respective OP
-
ERATOR section (for charge detection data out, see
the Data Output section on Page 8). To disable charge
detection on the display, shunt jumper JP6 inside the
unit (See Page 7). If a charge is detected while using
this configuration, the display will remain in its previous
state until the charge is no longer detected.
Testers limit comparator will calibrate:
19276
- Combo X3 Tester, Data Output, w/ Dual Plate
19277
- Combo X3 Tester, Data Output, Programmable,
w/ Stand
CALIBRATION
There are no user adjustments on model
19259 . Each
value is a fixed resistor load, any model
19259 that falls
out of specification will need to be sent to factory for
repair. Using a DVM (digital voltmeter), set the meter
to read ohms. The limit that the knob is set on can be
measured using the DVM connected between Banana
1 to Banana 2 and connected between Conductor 1
and Conductor 2. Refer to figure 3.
TB-3045
Page 2 of 3
© 2010 DESCO INDUSTRIES INC.
Employee Owned
Footwear Low Fail
Footwear Low and
High Pass
Footwear High Fail
Wrist Strap Low Fail Wrist Strap Low and
High Pass
Wrist Strap High Fail
Figure 3a. Footwear status LEDs
Figure 4a. Wrist Strap status LEDs
Figure 4. Wrist Strap Test Setup
Weight: 0.197 Ib
Dimensions: 3.76 x 2.41 x 1.52 in
9.55 x 6.12 x 4.52 cm
3.76”
9.55cm
1.52”
3.86cm
0.93”
2.36cm
2.41”
6.12cm
Figure 5. Limit Comparator specifications and
dimensions