19665 Desco, 19665 Datasheet - Page 3

• Manufacturer Part Number: 19665
• Description: MONITOR DUAL WIRE CONTINOUS 120V
• Manufacturer: Desco
• Type: Monitorr

Specifications of 19665

• Features: Monitors Two Operators
• Power Supply Type: 120V AC
• For Use With/related Products: Wrist Straps
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TB-3019 Page 3 of 4
The monitor provides status indicators for the following
conditions:
• Standby - The operator is not plugged into the remote. This
condition is indicated by a flashing yellow LED in the operator
section of the display.
• Operator Fail High - The operator’s series resistance is
greater than the upper resistance limit. This condition is
indicated by the red LED in the Operator section of the display
along with an audible alarm
• Operator Fail Low - The operator’s series resistance is less
than 1.9Meg Ohm. This condition is indicated by the solid
yellow LED in the Operator section of the display.
• Operator Pass - The operator’s series resistance is within
the range of 1.9Meg Ohm to the upper resistance limit. This
condition is indicated by the green LED in the Operator section
of the display.
• Ground Fail High - The resistance from the mat connection
to ground is greater than 3.5Meg Ohm. This condition is
indicated by the red LED in the Ground section of the display
as well as an audible alarm.
• Ground Pass - The resistance from the mat connection to
ground is less than 3.5Meg Ohm. This condition is indicated
by the green LED in the Ground section of the display.
The resistance values quoted above are the Factory Defaults.
These numbers will vary depending on the configuration.
Changing the Test Voltage
The monitor can be set for a test voltage of either +5V or +8V.
Reducing the test voltage will result in a lower finger-tip voltage
on the operator. To change the test voltage you must set two
switches inside the unit.
The unit is set at the factory at 8 volts. NOTE: If the unit
changed to a different voltage, it must be recalibrated.
Remove the four case screws and open the monitor’s case.
BE SURE TO OBSERVE ESD PRECAUTIONS, AS THERE
ARE ESD SENSITIVE DEVICES INSIDE THE CASE. Refer to
Figure 7 for setting the test voltage to +5V and +8V.
Periodic Preventive Maintenance Verification
The EMIT
used to check the test ranges of the Dual Wire - Dual Operator
Monitor. See EMIT
50524
DESCO
Dual-Wire Monitor Limit Comparator may be
TB-6542
EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Web Site: Desco.com
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
for instructions.
Specifications
• Two user selectable resistance levels of 10 Meg ohms or 35
• Two user selectable test voltage settings of +5V or +8V.
• SCCN compatible data output.
• Stainless Steel housing.
• Size: 4.3" W x 4.4" D x 1.8" H
• Plug-in power supply: 110 VAC/60Hz input, 12VDC/500mA
• Important: This appliance has a metal casing but the earth
• Rated Power consumption: 3.6VA.
Environmental Conditions
• Suitable for indoor use only at altitudes not exceeding 6500
• Maximum relative humidity of 80% up to 88°F (31°C)
• Pollution degree 2 per IEC 644
• Temperature range of 41°F (5°C) to 104°F (40°C)
Switch 1 Input Voltage 8v
Switch 2
Switch 3 Wrist Strap
Meg ohms.
output. 2.5mm connector - center positive. Any alternate
transformer must comply with the Safety Extra Low Voltage
(SELV) insulation requirements.
connection is only used for operational purposes. It is
considered to be class I and tested as class II. The power
supply connection plug is accessible to the user and there
is no safety insulation inside the monitor. Therefore, the
insulation of the power supply is critical.
ft. (2 km)
decreasing linearly to 50% @104°F (40°C)
Function
High limit
Dip Switches
Down
5v
35m
© 2010 DESCO INDUSTRIES INC.
Up
5v
8v
10m
Employee Owned