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20 W orkstation Products For more pr oduct information, please visit www .3M.com/static 3M ™ Verification Kit 724VK 3M ™ Verification Kit 790VK 3M ™ Verification Kit 725VK 3M ™ Monitor V erification Kits The 3M Verification …
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Workstation Products
Workstation Monitors
Remote 732
Ground
When not using work station
monitoring feature, connect
Cord 2380 to ground.
Conductive/
Dissipative
Worksurface
Ground
AC
Adaptor
Rear
Ground
Monitor 724
Attach 3M Ground Cord 724
or AC Adapter Ground Wire
Attach 3M Ground Cord 724
or AC Adapter Ground Wire
Monitor 724
Rear AC Adapter
AC Adapter
Ground Wire
Remote 733
Ground Cord 724
Ground
Wire 2380
Conductive/
Dissipative
Worksurface
#1
Cord 2389
Conductive/
Dissipative
Worksurface
#2
Worksurface
Ground Cord
Remote 732
Ground
3M
™
Workstation Monitor
The 3M Workstation Monitor 724 continuously monitors the resistance
of the operator and worksurface ground connections. The monitor
uses a reliable resistance method that actually includes the operator’s
skin resistance to determine if the system is operating properly. If
the operator’s resistance exceeds pre-set levels of 10 megohm or
35 megohm, or the wiring connections exceed 3.7 megohm, audible
and visible alarms are triggered. The unit will also warn of potentially
dangerous low-resistance situations. A switch allows the user to select
either a 9 V or 16 V test voltage, and 10 megohm or 35 megohm
resistance setting.
The monitor uses the light, compact dual conductor wrist strap
(purchased separately; see page 11). Dual conductors provide the
resistance circuit that is monitored, as well as grounding redundancy.
If one conductor fails, the other will still function to prevent sensitive
components from being exposed to static.
The Workstation Monitor 724 monitors a visitor to the workstation or
a second operator. In addition, the loudness of the alarm is adjustable.
A quick connect/disconnect 3M
™
Remote Input Jack 732 comes with
the Workstation Monitor.
The worksurface ground resistance circuit of the 3M workstation
monitor indicates a malfunction when the ground loop resistance
exceeds 3.7 megohm. To determine if your mat is within this limit,
perform the following procedure using an ohmmeter.
Measure the resistance between the snap on the mat, where
you intend to connect the 3M
™
Monitor/Table Mat Replacement
Cord 2380, and the ground point for the mat. Be sure the mat is
connected to ground.
3M
™
Workstation Monitor 724 pictured with 3M
™
Remote Input Jack 732, 3M
™
Dual Conductor
Wrist Band 4700 and the 3M
™
Dual Conductor Cord 2360 (ground cord and band not included).
724 Properties
Item Typical Properties
Dimensions
6.5 H x 3.125 W x 1.375 in. L
(16.5 x 7.9 x 3.5 cm)
Power Supply
25 Vdc @ 50 mA minimum
Test Voltage
9 Vdc or 16 Vdc
(Switch selectable)
Test Current
Less than 3 microamps
Upper Resistance Limits
Wrist Strap: 10 or 35 megohm
Switch selectable
Worksurface: 3.7 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
Remote Splitter Kit 733
Stand-By Jack 3057
Product No. Description
724
Workstation Monitor complete with a quick connect/
disconnect 732 Remote Jack and mounting hardware.
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)