SCS 740 User Manual

USER GUIDE TB-9040
Wrist Strap and Footwear Tester
Installation, Operation and Maintenance
Figure 1. Wrist Strap and Footwear Tester.
Description
The SCS 740 Wrist Strap and Footwear Tester
meets ANSI/ESD S20.20 per ESD TR53 Compliance
Verification testing of personnel grounding devices.
The SCS 740 Wrist Strap and Footwear Testers are
electronic test instruments that are easy to operate and
designed to be wall-mounted. An AC/DC transformer is
supplied. The Wrist Strap and Footwear Tester switches
off automatically after non-use for approximately 30
minutes.
The unit consists of two measurement circuits with an
open circuit test voltage of 14V for wrist strap and shoe
test applications. For wrist strap and footwear testing,
a minimum threshold resistance of 750 kilohm is set
internally. The desired maximum allowable resistance
level can be selected separately for each measurement.
If the resistance of the tested wrist strap or footwear
is within the selected range, the green "o.k."- LED will
illuminate. The red ">" - LED alerts the operator that
the resistance of the tested device is under 750 kilohm.
The red ">"- LED indicates that the selected maximum
resistance is exceeded.
The Wrist Strap and Footwear Tester can be connected
to external devices such as computers (for data
recording), electrical door opening systems, or other
logic driven components.
The Wrist Strap and Footwear Tester is available in two
models:
Item Description
740 Wrist Strap and Footwear Tester, North
America
740E Wrist Strap and Footwear Tester, Europe
TB-9040 Page 1 of 5 September 2015
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website:

Features and Components

LED for
too low
resistance
Ground cord
4 mm stud
Contact plate
for Wrist
Strap Test
Socket for
Wrist Strap
Ground socket
Output signal for
external devices Uppper limit
selection for test
Figure 2. Wrist Strap and Footwear Tester features and
components.
SCS offers the following accessories for the Wrist Strap
and Footwear Tester:
Item Description
741 Single Foot Plate, for 740 Tester
741D Dual Foot Plate, for 740E Tester
741DC Foot Plate Cable, for 741D Foot Plate
740P Power Adapter, North America Plug
740E-X Power Adapter, Europe Plug

Packaging

1 Wrist Strap and Footwear Tester
1 Wall Mounting Kit (Dual Lock Fastening System)
1 Power Adapter

Installation

Connecting the 741 and 741D Stainless Steel Foot
Plates
1. Connect the enclosed cord with the snap fastener
end to the stud of the electrode.
2. Connect the plug to the appropriate socket of the
740/740E Wrist Strap and Footwear Tester.
3. Switch the 740/740E unit on. Continue with Wrist
Strap and Footwear operating instructions.
StaticControl.com
LED for
too high
resistance
Contact plate
for shoe test
Connection
to AC/DC
Socket for shoe Transformer
electrode
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Employee Owned