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21 W orkstation Products Monitor V erification Kits and Dual Conductor Portable Wrist Strap Monitor 3M ™ Dual Conductor Portable Wrist Strap Monitor The 3M ™ Wrist Strap Monitor 725 is a small, compact, battery-powered un…
20
Workstation Products
For more product information, please visit www.3M.com/static
3M
™
Verification Kit 724VK
3M
™
Verification Kit 790VK
3M
™
Verification Kit 725VK
3M
™
Monitor Verification Kits
The 3M Verification Kits 724VK and 725VK were designed to check the
wrist strap input resistance ranges of the 3M
™
Workstation and 3M
™
Wrist Strap Monitors 700 Series. The 3M Verification Kit 790VK contains
hardware items for connecting to the 3M
™
Static Monitor 790, that are
recommended when performing the verification procedure. Use of this kit
allows for reliable connections to the Monitor 790. In addition to this kit,
a DC power supply and resistance substitution box are required (supplied
by user). See instruction manual for complete details.
724VK Contents
Item Value
Test Plug #1 Resistor, Metal Film,
1.33 megohm ± 1%, 1/4 Watt
Test Plug #2 Resistor, Metal Film,
1.69 megohm ± 1%, 1/4 Watt
Test Plug #3 Resistor, Metal Film,
8.45 megohm ± 1%, 1/4 Watt
Test Plug #4 Resistor, Metal Film,
11.5 megohm ± 1%, 1/4 Watt
Test Plug #5 Resistor, Metal Film,
29.4 megohm ± 1%, 1/4 Watt
Test Plug #6 Resistor, Metal Film,
40.2 megohm ± 1%, 1/4 Watt
725VK Contents
Item Value
Test Plug #1 Resistor, Metal Film,
29.4 megohm ± 1%, 1/4 Watt
Test Plug #2 Resistor, Metal Film,
40.2 megohm ± 1%, 1/4 Watt
Test Plug #3 Resistor, Metal Film,
4.99 megohm ± 1%, 1/4 Watt
Test Plug #4 Resistor, Metal Film,
11.5 megohm ± 1%, 1/4 Watt
790VK Contents
Item
Dual Conductor Cord 2360, 5 ft. (1.5 m)
Test Wrist Band Socket Assembly
Two-Wire Male Connector with 24 in. (60.9 cm) lead wire
Product No. Description
724VK
Verification Kit
Six 1% Resistor Plugs and Case
725VK
Verification Kit
Four 1% Resistor Plugs and Case
790VK
Verification Kit
One 5 ft. (1.5 m) Dual Conductor Cord 2360, one test
wrist band socket assembly, and one two-wire male
connector with 24 in. (60.9 cm) lead wire.
3M
™
Dual Conductor Remote Input Jacks
The 3M Remote Input Jack 732 may be purchased as a replacement
part for the 3M
™
Workstation Monitor 724. It provides two phone jacks
— one for the primary worker and one for use by visitors to the work
area. The 3M
™
Remote Splitter Kit 733 may be purchased for use in
conjunction with the Workstation Monitor 724. It offers the versatility
of grounding and monitoring two workers at independent workstations
that are in close proximity. The units feature a quick “connect/
disconnect” system.
3M
™
Remote Input Jack 732
3M
™
Remote Splitter Kit 733
Product No. Description
732
Replacement Remote Input Jack for the 724
Workstation Monitor, 6 ft. (1.8 cm) long cord
Size, in. (cm)
3.188 H x 1 W x 1.5 in. D (8.1 x 2.5 x 3.8 cm)
733
Remote Splitter Kit, 6 ft. (1.8 cm) long cord
Size, in. (cm)
3.188 H x 1 W x 1.5 in. D (8.1 x 2.5 x 3.8 cm)
21
Workstation Products
Monitor Verification Kits and Dual Conductor Portable Wrist Strap Monitor
3M
™
Dual Conductor Portable Wrist
Strap Monitor
The 3M
™
Wrist Strap Monitor 725 is a small, compact, battery-powered
unit that continuously monitors both the worker and the worker’s wrist
strap. The monitor uses a reliable resistance method that includes the
worker’s skin resistance to determine if the system is operating properly.
The monitor uses the same dual conductor wrist strap as used with the
3M
™
Workstation Monitor 724. In addition, the Monitor 725 also monitors
the ground wire connection and battery level.
The Wrist Strap Monitor 725 immediately alerts the individual when
a wrist strap is operating improperly. The Monitor 725 continuously
supplies a current that is returned through a wrist band and cord that
contain two separate independent conductors.
The monitor is a compact, portable, battery-powered unit with a visual
and an audible alarm. A “parking plate” mounted on the Monitor 725
allows an individual to disconnect the ground cord and clip it to the
parking plate to silence the alarm when moving from one work area to
another. The 3M
™
Belt Clip 723 is available as an accessory item and
may be purchased separately.
The competitively priced Wrist Strap Monitor 725 can be used in
manufacturing and field service environments. By contributing to the
protection of static sensitive devices and printed circuit boards from
static damage, the monitor helps save money and time as a result of
improved yield rates and lower field service costs.
Note: Only use 3M
™
Dual Conductor Bands and Cords with
the Monitor 725. See page 8 for additional information on wrist
band and cord combinations.
3M
™
Wrist Strap Monitor 725
Verification Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pg. 20
3M
™
Belt Clip 723
725 Properties
Item Typical Properties
Dimensions
2.5 H x 2.6 W x 1.1 in. D
(6.4 x 6.6 x 2.8 cm)
Power Supply
9 V alkaline battery (not supplied)
Test Voltage
9 Vdc maximum
Test Current
Less than 1 microamp
Upper Resistance Limits
Wrist Strap: 35 megohm
Ground Clip: 10 megohm
Lower Resistance
Wrist Strap: 1.5 megohm
Worksurface: none
Accuracy
± 15%
Environmental Operating Conditions
Temperature
Max. 110°F (43°C), Min. 50°F (10°C)
Humidity
Max. 75% R.H.
Accessories
Belt Clip 723
Product No. Description
725
Personal and Portable Wrist Strap Monitor for use in
manufacturing and field service environments. The Monitor
725 features wrist strap monitoring and grounding for
ESD mats/work surfaces. Accessory Belt Clip 723
converts the monitor into a portable/personal monitor.
723
Accessories:
Belt Clip 723
2.5 H x 2.625 W x 1.125 in. D
(6.4 x 6.7 x 2.9 cm)
22
Workstation Products
For more product information, please visit www.3M.com/static
3M
™
Wrist Strap Monitor
The 3M Static Monitor 790 is a cost-efficient unit that is small, compact
and versatile in its usage, and may be mounted directly onto device
handling equipment, testers and auto insertion equipment.
Housed in static dissipative plastic, the Static Monitor 790 works by
measuring the voltage potential on a person referenced to earth ground.
The monitor uses a slide switch allowing the user to select the voltage
level necessary for the specific job function being performed.
The Static Monitor 790 has two wrist strap input jacks located on its
front, allowing two operators to use one monitor unit at a workstation
simultaneously. Power is supplied to the unit through an AC adapter.
Three distinct alarms make it easy to identify operators and the type of
fault condition. The audible alarm can be adjusted to a low or high level
to overcome background noise from other equipment that may be in use
in the area. Ring terminals on the end of the unit’s ground and chassis
cords provide a permanent connection.
Features
• Audible and visual alarms.
• Compact system.
• Select voltage alarm levels of 1 V, 3 V, 6 V and 9 V.
• Static dissipative plastic housing.
• Mounts easily to ESD worksurface.
• Regulatory Compliance: UL and CE.
• VM fabric and metal bands are to be used specifically with the
Static Monitor 790.
3M
™
Static Monitor 790
790 Properties
Item Typical Properties
Monitor Size
3.5 H x 4.0 W x 1.25 in. D
(8.9 x 10.2 x 3.2 cm),
approximate H x W x D
Power Supply Requirements Input
120 Vac ±10% (North America)
Outside North America
(As required)
Output
25 Vdc @ 50 mA rated load
Output Plug Polarization
Center negative
Output Plug Dimensions
5.5 x 2.1 x 9.5 mm (OD x ID x l)
Accuracy
(The following parameters are valid for
altitudes up to 2000 m. Pollution degree
2, Class 3, Equipment)
Voltage Detection Levels
(1 V ±15%) (3 V, 6 V, & 9 V ±10%)
Ground Disconnect
10 ohm ±20%
Environmental Operating Conditions
Temperature
Max. 104°F (40°C); Min. 50°F (10°C)
Humidity
Max. 75% relative humidity
Product No. Description
790
Monitor includes:
• 790 Wrist Strap Monitor
• 790AC Adapter (available without AC Adapter)
• 3M
™
Dual Lock
™
Mounting Fasteners
• 2-Wire Connector
Product No. Description
790MP
Mounting Plate for 790 (10 per package)
790VK
Verification Kit
3057
Stand-By Jack
Dual Conductor Bands and Cords
(See page 8 for additional information on wrist band
and cord combinations.)