CharlesWater Jewel 99135 Installation and operating instructions

Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: [phone] • Internet: Charleswater.co.uk
PPE-5098.E Page 1 of 4 © 2014 Charleswater June 2014
TECHNICAL BULLETIN PPE-5098.E
Jewel®Workstation Continuous Mini Monitor
Installation, Operation and Maintenance Made in the
United States of America
Figure 1. Charleswater 99135 Jewel®Workstation
Continuous Mini Monitor.
Description
The Jewel® Workstation Continuous Mini Monitor
independently monitors the operator and the
worksurface. The instant an operator’s wrist strap or
cord fails, the monitor will issue audible and visual
alarms alerting the user of the problem. In the same
manner, the unit also conrms that a path to ground
of less than 500 megohms exists from the ESD
worksurface.
The Jewel® Workstation Continuous Monitor is a Single
Conductor Impedance Sensing Continuous Monitor
which per ESD Handbook TR20.20 section 5.3.9.2.1 “a
small AC voltage is used in a detection circuit designed
to eliminate false alarms and adjustment. They use the
phase difference between current and voltage to detect
changes in impedance of the grounding cord, wristband
and person. No adjustments are required.”
Per ESD Handbook ESD TR20.20 section 5.3.2.4.4,
“Typical test programs recommend that wrist straps that
are used daily should be tested daily. However, if the
products that are being produced are of such value that
knowledge of a continuous, reliable ground is needed,
and then continuous monitoring should be considered or
even required.”
Advantages Of Continuous Monitoring
Over Periodic Testing
“When considering constant [or continuous]
monitors, the equipment cost including the wrist
strap, maintenance and training cost, labour time for
performing wrist strap tests, and the potential failures
due to non-functional wrist straps should be considered.
A broken wrist strap may expose products to ESD
over an entire shift if it is checked only at shift change
with wrist strap checker.” (ESD TR 12-01 Section 4.2
Selection Considerations)
The Jewel® Workstation Continuous Monitor eliminates
the need for periodic wrist strap tests and logging.
Continuous monitoring is superior to periodic or
pulsed testing, and can save a signicant amount of
money in testing costs and rejected product. Periodic
testing detects failures after ESD susceptible products
have been manufactured. The costs of dealing with
the resulting catastrophic or latent defects can be
considerable. Jewel® Workstation Continuous Mini
Monitors eliminate the need for operaters to test wrist
straps and log the results; by their function, these
monitors satisfy the ISO 9000 and ANSI/ESD S20.20
test logging. ANSI/ESD S20.20 Section 6.2.2.2
Personnel Grounding Guidance states “A log should be
maintained which veries that personnel have tested
their personal grounding devices.” Per ANSI/ESD-S1.1
Annex A Section 6.1.3 “Daily (wrist strap system) testing
may be omitted if constant monitoring is used.” Per
ANSI/ESD-S1.1 Annex A Frequency of Functional
Testing, “The wrist strap system should be tested daily
to ensure proper electrical value. Daily testing may be
omitted if constant monitoring is used.”
Park Snap
The audible alarm is designed to alert both operator and
supervisor. The Park Snap feature provides a means
for an operator to disconnect when normally leaving
the work area, without the audible alarm sounding, and
wrist cord storage (visual red LED will illuminate). When
the operator touches the Park Snap, the audible alarm
is disabled for about 8-10 seconds. The operator can
remove the wrist strap cord and attach socket of the
cord to Park Snap for storage. The coil cord may also
be removed from the jack on the Jewel® monitor without
the alarm sounding. Once the coil cord is in the park
position, the operator ground status light will remain red.
Wave Distortion Detection Technology
Provides True 100% Continuous Monitoring
Wave distortion impedance circuitry monitors current /
voltage phase shifts and provides true 100% continuous
monitoring. Electrical current will lead voltage at various
points due to the combinations of resistance and
capacitive reactance. By monitoring these “distortions”
or phase shifts, the Jewel® Workstation Continuous Mini
Monitor will reliably determine if the circuit is complete.

Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: [phone] • Internet: Charleswater.co.uk
PPE-5098.E Page 2 of 4 © 2014 Charleswater
Wave distortion technology can be referred to as “vector
impedance monitoring”. This description is valid as the
wave distortion technology measures the impedance
at the monitored banana jack and looks for changes in
either the capacitance or resistance of the circuit which
includes the wrist strap and its wearer. It uses ltering
and time domain sampling to lter out false signals
caused by voltage offsets, 60 Hz elds and other electro-
magnetic and electrostatic interference.
In normal factory environments, and with persons whose
capacitance with respect to ground is within design
limits (1.5 meter tall 41 kilogram person to 1.8 meter 13
centimeter 91 kilogram person), the Jewel®Workstation
Continuous Mini Monitor cannot be “fooled”. It will
provide a reliable alarm only when the wrist strap or
work surface becomes dysfunctional or unsafe according
to accepted industry standards. The Jewel®Workstation
Continuous Mini Monitor is drift-free and designed to be
insensitive to the effects of squeezing or stretching the
coil cord.
Advantages Of Wave Distortion And Single-
Wire Technology
The Jewel® Workstation Continuous Mini Monitor allows
the use of any standard, single-wire wrist strap and coil
cord. The monitor / wrist strap / cord system life-cycle
costs are by far lower than alternative systems which
require expensive and less durable dual-wire cords and
special wrist straps. The Jewel® Workstation Continuous
Mini Monitor is an economical way to monitor both the
operator’s wrist strap and workstation surface. See
“Maintenance and Calibration” (page 4) to minimize life-
cycle costs.
The dictionary denes constant as uniform and
unchanging, and continuous as uninterrupted
Nonetheless, some dual-wire resistance monitors utilize
a pulsed test current and do not provide continuous
monitoring. For example, during each 2.2 second pulse
cycle of a leading “constant” resistive monitor, electrical
current is pulsed for only 0.2 seconds followed by an
unmonitored interval of 2 seconds. This leaves the user
/ wrist strap unmonitored for over 90% of each cycle.
Damaging static charges can easily occur in the portion
of the time in between the pulses. The off period of 2
seconds equals 2 billion nanoseconds, and “it takes
only about 25 volts applied for 100 nanoseconds to blow
most memories or microprocessors”.*
By using the reliable wave distortion impedance
technology to determine if the circuit is complete, there
are no false alarms. There is no need to adjust or
tune the monitor to a specic user or installation. The
miniscule amount of electrical current (less
than 1 volt coil cord signal) required to generate the
waveform has never caused reported skin irritation and
is extremely safe for use in voltage sensitive applications
such as disk drive manufacturing.
Worksurface Channel
The Jewel® Workstation Continuous Mini Monitor
monitoring circuitry is sufciently sensitive to detect
extremely low current, allowing it to be used with mats
having a resistance of up to 5 x 108 ohms RTG. When
the Monitor is connected to an ESD Mat worksurface,
the amount of current that ows is a function of the
total resistance between the monitor and through the
worksurface to ground. When the resistance of the
worksurface is below a pre-set threshold, the monitor
will indicate good. Conversely, if the resistance level is
high when compared to the monitor’s reference, the unit
will alarm. This is an integrating resistance measuring
circuit, therefore it is relatively insensitive to externally
induced electromagnetic elds. The resistance threshold
is factory set to 500 megohms. (It can be special
ordered to other limits. Limits can be varied and set to 1
gigohm maximum.)
Packaging
1 Jewel® Workstation Continuous
Mini Monitor
2 Push and Clinch Snaps
1 Power Adaptor, 24 VAC
1 Banana Plug / 10mm Snap Adapter
1 Certicate of Calibration
Cords must be ordered separately.
Installation
Conrm that the surface resistance (Rtg) of the mat is
5 x 108 ohms or less and has a conductive layer. We
recommend the Charleswater 99105 or 99111 Meter.
Remove the monitor from its packaging and inspect for
any shipping damage.
The Continuous Mini Monitor is normally installed toward
the front edge of a workstation where the LEDs are
easily visible. The unit is designed to be snapped on the
worksurface using the 10mm snap studs mounted at the
bottom of the monitor (see Figure 2).
ESD MAT
Push and Clinch Snaps
Figure 2. Installation of push and clinch snaps to
worksurface.

Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: [phone] • Internet: Charleswater.co.uk
PPE-5098.E Page 3 of 4 © 2014 Charleswater
Figure 3. Installation of the monitor to the worksurface
one snap at a time.
NOTE: Install the monitor to the worksurface by aligning
one snap at a time and applying a downward force
directly above that snap.
Figure 4. Operating the Jewel®Workstation Continuous
Mini Monitor.
The following procedure will outline how to correctly wire
the Jewel® Workstation Continuous Mini Monitor so as to
properly monitor an ESD protected workstation.
1. Conrm that the worksurface surface resistance is
5 x 108 ohms or less and has a conductive layer.
2. A convenient outlet should be located and tested for
proper wiring and grounding. We recommend the
Charleswater 99142 AC Outlet Analyzer to verify
proper wiring and ground.
3. Plug the AC Adapter into the outlet and connect
the mini plug into the back side of the Monitor. The
green Worksurface LED should be lit. The Monitor
is now ready for use. If the red Worksurface LED
is ashing, check the snap fasteners for proper
connection.
Installation on Micastat®Laminate
Materials Needed:
2 90202 Flush Mount Laminate Ground Inserts
1 90200 Installation Tool for Flush Mount Insert
1 230675 10mm Socket and Rivet (100 per pack)
2 8-32 button cap screws
1. Install the 90202 Flush Mount Inserts in the snap
pattern for the monitor.
2. Once installed, remove the 8-32 screw supplied.
3. Place a 10mm snap socket on top of the installed
90202 brass insert.
4. Screw the 10mm snap socket into place on the insert
using an 8-32 button cap screw.
5. Do this for both inserts and snap attach the mini
monitor into place; it is now grounded to and
monitoring the Micastat®.
Operation
When the Jewel® Workstation Continuous Mini Monitor
is installed and is connected to an ESD protective work
surface, and it is grounded via an AC adapter cord, the
monitor’s green Worksurface LED and its red Operator
LEDs should be on. The monitor takes 6 seconds to
activate its alarm circuitry when it is rst plugged in.
• The custom AC adapter connects the ground outlet to
the barrel on the output plug.
• The AC adapter therefore supplies the Monitor with
ground.
• The mat resistance is measured between the two
snaps on the bottom of the unit.
• This monitor simplies the workstation, eliminating
the need for a separate mat ground cord.
TO USE THE MONITOR
1. Plug a wrist strap cord banana plug into the
monitored banana jack on the front of the unit. The
included banana plug / 10mm adapter may be
inserted into this jack if a wrist cord with a 10mm
snap is to be used with the monitor. This
automatically activates the operator channel. The red
operator LED should illuminate.
NOTE: The monitor is not compatible with wrist cords
that have 1 megohm resistors at both terminations. The
termination with the 1 megohm resistor must always be
connected to the operator and not the monitor.

Unit 17. Millbrook Business Park, Sybron Way • Crowborough, East Sussex TN6 3JZ United Kingdom
Phone: [phone] • Internet: Charleswater.co.uk
PPE-5098.E Page 4 of 4 © 2014 Charleswater
Maintenance and Calibration
The Jewel® Workstation Continuous Mini Monitor is
solid state and designed to be maintenance free. It
is calibrated to NIST traceable standards. There are
no user adjustments necessary. Because of the wave
distortion impedance sensing nature of the test circuit,
special equipment is required for calibration. We
recommend that calibration be performed annually
using the Charleswater 50512 Continuous Monitor
Calibration Unit. The Calibration Unit is a most important
product which allows the customer to perform NIST
traceable calibration on continuous monitors. The
50512 is designed to be used on the shop oor at the
workstation, virtually eliminating downtime, verifying that
the continuous monitor is operating within tolerances.
The 50512 provides a simple and quick means to assure
compliance vericaton Per ANSI/ESD S20.20 Table 3
per ESD TR53.
Limited Warranty
Charleswater expressly warrants that for a period of one (1) year
from the date of purchase, Charleswater Continuous Monitors
will be free of defects in material (parts) and workmanship
(labor). Within the warranty period, the product will be tested,
repaired or replaced at Charleswater’s option, free of charge. Call
Customer Service at 00 44 (0) 1892-665313 for a Return Material
Authorisation (RMA) and for proper shipping instructions and
address. You should include a copy of your original packing slip,
invoice, or other proof of purchase date. Any unit under warranty
should be shipped prepaid to the Charleswater factory. Warranty
replacements will take approximately two weeks.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE
IN LIEU OF ALL OTHER PRODUCT WARRANTIES,
EXPRESSED AND IMPLIED, INCLUDING
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED.
The express warranty will not apply to defects or damage
due to accidents, neglect, misuse, alterations, operator
error, or failure to properly maintain, clean or repair
products.
Limit of Liability
In no event will Charleswater or any seller be responsible or
liable for any inury, loss or damage, direct or consequential,
arising out of the use of or the inability to use the product.
Before using, users shall determine the suitability of the
product for their intended use, and users assume all risk
and liability whatsoever in connection therewith.
2. Remove the charges from your body by making
contact with a properly grounded ESD worksurface.
Snap the cord to the wristband, and t it snugly onto
the wrist. This should silence the audio and cause
the LEDs to switch from red to green. If this does not
happen, check the coil cord for continuity or damage.
Examine the wrist and secure that it has a secure
t. If you have dry skin, apply an approved dissipative
hand lotion such as Menda 35666 Reztore™ ESD
Hand Lotion. When leaving the area, a person can
take the coil cord along or leave it attached to the
monitor in park position.
NOTE: Removing the banana plug from the monitor’s
operator jack will disable the audio alarm.
It is recommended that you use the Park Snap rather
than continuously removing the Banana Plug from its
jack. Doing so will increase the life span of the operator
jack. If your process requires the constant insertion
and removal of the banana plug, please contact your
Charleswater Representative for alternate solutions.
Specications:
Test range of monitored circuit:
500K - 10M ohms†
Worksurface Limit*:
Set to 500 Megohms ± 20%
Operating Voltage:
24VAC, 50-60 Hz
Wrist strap open circuit voltage:
1.2 Volts peak to peak @ 1-2 MicroAmps
Mat test open circuit voltage:
5 - 7.5 Volts
Response time to alarm:
<50 mS
Operating Temperature:
0ºC - 38ºC
Humidity Range:
0-95% RH, non- condensing
Dimensions:
70.4mm L x 52.6mm W x 18mm H
† This cannot be veried with standard DC test
equipment. The continuous monitor is an impedance
sensing device and the limits are determined by the
magnitude and angle of the impedance.
*Contact factory for special limits.
NOTE: Worksurface must have a conductive layer such
as Dual Layer Rubber or Dissipative 3-Layer Vinyl or
Micastat® Dissipative Laminate with conductive buried
layers. Charleswater continuous monitors are not
recommended for use with homogeneous matting.