SCS 的 Ground Pro Meter User Guide 规格书

SCS
TB-9024 Page 1 of 7 © 2016 DESCO INDUSTRIES, INC.
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Controls and Indicators
– Turns the power on and off. Hold for a few
seconds to turn the unit off. Also resets some
parameters.
– Switches the unit into impedance measurement
mode.
– Switches the unit into high-frequency noise
(EMI) measurement mode.
– Switches the unit into AC and DC voltage
mode.
– Sets up the reference for measurements and
alarms.
– Freezes the display/and shows the maximum
measured value.
– Adjusts the scale for some parameters and
adjusts reference values.
– Display backlight on/off
Features and Components
Ground Pro Meter
Installation, Operation and Maintenance
April 2016
USER GUIDE TB-9024
Description
The SCS CTM051 Ground Pro Meter is a
comprehensive instrument that measures the ground
connection of your equipment in accordance with ANSI
6.1 and ANSI/ESDA S.20.20 standards. In addition to
measuring ground impedance, it also measures AC and
DC voltage on the ground as well as the presence of
high-frequency noise or electromagnetic interference
(EMI) on the ground, alerting you to possible functionality
problems, such as tool lockups, erratic behavior and
parametric errors.
The Ground Pro Meter is available in one model:
Item Description
CTM051 Ground Pro Meter, with 9V battery and pair
probe leads
The following accessory is available for the Ground Pro
Meter:
Item Description
NCA006 Replacement Test Leads
Packaging
1 Ground Pro Meter
1 Pair of probe leads
1 9V battery
1 CertificateofCalibration
Made in the
United States of America
Figure 1. SCS CTM051 Ground Pro Meter
E M I
R e f .
V
P o w e r
C
H o l d
Figure 2. Ground Pro Meter features and components
Keypad
Banana
Jacks
Battery
Compartment
(On the back)
Display
Automatic Power Off HPU 05’ 5H 3 L flmmmflmmmflmmmfl ‘3
TB-9024 Page 2 of 7 © 2016 DESCO INDUSTRIES, INC.
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Power
The SCS Ground Pro Meter uses a 9V alkaline battery.
Do not use any other battery. If you are not using your
Ground Pro Meter for an extended period of time,
remove the battery from the unit in order to prevent
damage caused by a possible battery leakage.
Installing the Battery
Remove the screw from the battery lid. Slide off the
battery lid at the back of the Ground Pro Meter and
attach the 9V battery to the battery clip. Observe the
polarity of the battery. Slide in the battery lid and secure
it back with the screw.
Low-Battery Indicator
When battery voltage gets low (less than 20% capacity
remains), the low battery indicator on the display
appears. At this point, replace the battery.
0 62 4
Figure 3. Low-battery indication.
Turning Unit On and Off
ON
Press the button. If the battery voltage is too
low even to indicate low-voltage status on the
display or if the self-diagnostic fails, you will
hear a beep and the unit will shut itself off. If
the battery is completely drained, there may not
even be a beep. Please replace the
battery. Use proper disposal method per local
regulatory requirements.
OFF
Press the Power/C button for at least two seconds. The
Ground Pro Meter will turn off.
Automatic Power Off
Figure 4. Automatic power on/off indicator.
In order to save battery life, the SCS Ground Pro Meter
has an automatic power-off (APO) feature that will
turn the unit off after approximately 10 minutes if no
buttons are pressed. You can access the APO setting by
depressing the F button once. You will see the display
as shown above. You can then enable or disable APO
using the Up and Down arrow buttons. Please keep
in mind that with APO disabled, the battery life will be
shorter.
Checking the Battery Voltage
Press the F button two times to get the screen in Figure
5. The upper display shows the battery voltage, and the
lower display shows the percentage of usable battery life
left.
%
V
Lin
0 62 4
F
Figure 5. Battery voltage and percentage.
E M I
R e f .
V
P o w e r
C
H o l d
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TB-9024 Page 3 of 7 © 2016 DESCO INDUSTRIES, INC.
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Impedance Measurements
Press the Ohm button to go to ground impedance mode.
You should see a screen similar to the one shown in
Figure 6. The impedance mode is indicated by “OH” on
the bottom display line.
Scaling
Meter will return to normal measurement mode. Now
when the test leads are shorted together, the display
should show zero Ohms, even though the test leads
may have some impedance. The correction factor will be
saved in the internal memory.
If the test leads are not shorted properly or become
accidentally disconnected during this process, auto-
zero will fail and you should hear a long beep before the
display returns to the impedance measurement screen.
In this case you will need to repeat this process again.
Voltage on Ground Measurements
Do not use to measure mains voltage.
The presence of voltage on a ground is never desirable.
The Ground Pro Meter can measure both AC and DC
voltages on a ground.
AC Voltage
Integrity Meter will switch to AC voltage measurement
mode and you should see a screen similar to one in
Figure 9. You can adjust the measurement scale using
the Up and Down arrow buttons.
DC Voltage
Press the V button again to switch to DC voltage
measurement mode. You should see a screen similar
to the one in Figure 10. As in AC mode, you can adjust
the measurement scale using the Up and Down arrow
buttons.
Overload
If voltage on the ground is above the maximum level on
a particular scale, you should see an overload indicator
such as the one in Figure 10. In such a case, go to the
next scale using the Up arrow button.
0 2 4
E M I
R e f .
V
P o w e r
C
H o l d
Figure 6. Impedance Screen.
V
0 62 4
Figure 9. AC voltage display
Figure 7. Changing the measurement scale
The SCS Ground Pro Meter has four different scales for
measuring ground impedance. Choose the appropriate
scale for your measurements using the Up and Down
arrow buttons.
Auto-Zeroing Test Leads
Test leads offer added impedance and may alter
measurement results, especially at a lower scale. In
order to take impedance of test leads into account,
short the ends of the test leads together and press the
Function button (F) until you see the screen shown in
Figure 8. In a few seconds, this screen will disappear
and you will hear a short beep. The SCS Ground Pro
F
0 62 4
Figure 8. Test leads screen.
TB-9024 Page 4 of 7 © 2016 DESCO INDUSTRIES, INC.
Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Using Reference with Impedance
Measurements
The Reference function helps to set limits at which
an audio alarm sounds to indicate that the measured
impedanceisbelowthespecifiedlimit.Unlikea
regular multi meter, the SCS Ground Pro Meter allows
you to specify an exact impedance value at which
the instrument will provide an audio indication. In
Impedance mode, press the Ref. button. You should
see a screen similar to the one in Figure 11 with the
REF indicator on. The top line of the display shows the
current impedance value (in this example it is an open
circuit) and the bottom line shows the reference level.
Adjust the reference level by using the Up and down
arrow buttons. Now when the impedance is below the
reference value, you should hear a beep. The reference
value is set for a particular range – you may need to
readjust it for a different range. The reference value will
be saved in the internal memory.
EMI Measurements
High frequency noise (EMI) on a ground causes
equipment malfunction and damage to sensitive
components. The SCS Ground Pro Meter measures
high-frequency noise on a ground in a wide frequency
and dynamic range.
High-frequency noise is measured in two different units
— volts and dBµV. The latter is a logarithmic measure of
voltage where 0 dBµV is referenced to 1 µV.
In order to measure EMI on a ground, press the EMI
button. The screen will show the average value of the
high-frequency signal in Volts on the bottom display line
and the magnitude of the envelope peak of the signal
(i.e. transients or spikes) on the top line. By pressing the
EMI button one more time you can switch to dBµV units,
as shown above.
Auto Scale
The Ground Pro Meter uses auto scaling in EMI mode.
No scale switching is necessary.
dB
µ V
µ V
dB
0 2 4
AVG PEAK
EMI
Peak EMI in dBuV
V
Average EMI in dBu
Relative peak value
Average EMI in V
Relative peak value
V
Peak EMI in V
V
0 2 4
AVG PEAK
Figure 12. EMI Measurement screen.
O hm s
R ef
Normal
measurements
screen
0 106 82 4
Threshold
Impedance
in Ohms
106 84
REF
Figure 11. Impedance measurements screen.
0 1 06 82 4
Figure 10. AC voltage screen.
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Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Using Reference with EMI
Reference mode is helpful if you wish to hear an audio
alarm whenever the EMI signal exceeds a certain level.
In order to use this mode, depress the REF button while
in any of the EMI screens. You should see the REF
indicator at the top of the display. The bottom line of the
display will now show the reference value of the peak
signal. Adjust the reference level using the Up and Down
arrow buttons. Now whenever the peak value of the EMI
signal exceeds this reference level, an audio alarm will
sound.
By pressing the REF button again, you can adjust the
reference level for the average signal as shown above.
Hold Function
Pressing the Hold button once while in any measurement
mode will cause the SCS Ground Pro Meter to enter the
Hold mode. The display will freeze, showing the value at
the moment the button was pressed. Pressing the Hold
button a second time the display will show the maximum
value of the signal accumulated from the moment of
pressing the button.
Note: If you power down the Ground Pro Meter while in
any of these modes, it will remain in the same mode when
the unit is powered up again.
Pressing the Hold button one more time puts the Ground
Pro back into regular mode.
Maintenance
Clean using a dry brush or vacuum cleaner around the
device. In case of contact malfunction, clean contacts
using a contact cleaner or a brush and tighten all
connections.
Repairs and Servicing
Do not attempt to repair the product yourself. Contact a
SCS sales representative or authorized dealer to request
inspection and repair. There are no user-serviceable
parts.
Device Calibration
Contact a SCS sales representative or authorized dealer
to request for product calibration if needed.
Specifications
Power
Battery 9V Alkaline
Impedance
Range 0.000 to 1.999 Ohm, 2% + 0.003 Ohm
00.00 to 19.99 Ohm, 1% + 0.05 Ohm
000.0 to 199.9 Ohm, 1% + 0.5 Ohm
0000 to 1999 Ohm, 1% + 5 Ohm
Automatic auto-zero for test leads
EMI (noise on ground)
Bandwidth 9kHZ to 450MHz
Measurement
Range
10mV to 5Vpeak
80dBµV to 134dBµV
Measuremnt Type Average
Peak
Voltage on Ground
AC (50 to 500 Hz) 0.001 to 10V RMS
DC 0.001 to 10V
General
Dimensions
(approx)
4.5ʺx2.4ʺx1.1ʺ
(114 mm x 60 mm x 28 mm)
Weight (approx) .3 lbs (.14 kg)
Figure 13. Reference mode with EMI.
Figure 14. Hold mode.
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Employee Owned
SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Safety Information
Intended Use
The Ground Pro Meter measures several important
parameters of grounding: ground impedance and high-
frequency noise (EMI) on a ground.
This device is not intended to be used to measure mains
voltage.
It is necessary to use proper equipment to check for
stray voltage from mains prior to using the Ground Pro
Meter to measure ground.
Ground connectivity is measured in accordance with
ANSI 6.1. It is measured as impedance in a way that
is immune to parasitic signals on a ground. In addition
to monitoring the ground connection, the Ground Pro
measures high frequency noise (EMI) on the ground
that is often present in a factory environment. Such
interference causes problems with the operation of
equipment.
Thedevicemustbeusedasspecifiedinthisuserguide
in an indoor commercial/industrial environment, and
has not been evaluated for other uses or locations. If
theequipmentisusedinamannernotspecifiedbythe
manufacturer, the protection provided by the equipment
may be impaired.
Read, understand, and follow all safety information
contained in these instructions prior to the use of this
device. Retain these instructions for future reference.
Warning: Toreducetherisksassociatedwithfireand
explosion:
• Do not use in Hazardous Locations.
To reduce the risks associated with hazardous voltage
andfire:
• Do not use this device outdoors or in wet or humid
environments.
• Do not use this device outside of the operating
conditions listed in this user manual.
To reduce the risks associated with hazardous voltage:
• Do not replace battery while device is in use.
Battery compartment is only intended to be open
with the device powered off.
• Do not operate if the battery door is not in place.
• Do not use meter to test three-phase equipment.
• Do not use to measure mains voltage Disconnect
circuit power and discharge all high-voltage
capacitors before testing resistance, continuity,
diodes, or capacitance.
• Always use proper terminals and device settings.
• Check the test leads for continuity before use. Do
not use if the readings are high or noisy.
• Do not use the meter or test leads if damaged or
are not operating properly.
• Do not modify or attempt to service the meter or
leads; there are no user serviceable parts. Return
to SCS for service.
• Do not use the Meter or test leads outside of the
operating conditions listed in this user guide.
• Keepfingersbehindthefingerguardsontheleads.
• Allpersonnelusingthisdeviceshallbecertifiedor
properly trained.
Caution: To reduce the risks associated with
environmental contamination:
Dispose of meter and all components in accordance with
all applicable local and government
Notice: To reduce the risks associated with property
damage:
• Before use, check that the meter is functioning
correctly.
• Remove battery before long-term storage
Environmental Conditions
This equipment has been tested and found to be safe to
operate within these environmental conditions.
This is not a warranty of equipment performance within
these conditions:
• Indoor use only.
• Ingress Protection: IPX0.
• Altitude: Up to 2,000 m.
• Pollution degree 2.
• Temperature: Maximum 110°F / 43°C
Minimum 50°F / 10°C
• Humidity: Maximum relative humidity 80% for
temperatures up to 31°C decreasing linearly to 50%
relative humidity at 40°C
Regulatory Information
China RoHS
Electronic Industry Standard of the People’s Republic of
China, SJ T11363-2006, Requirements for Concentration
Limits for Certain Hazardous Substances in Electronic
Information Products
This symbol, per Marking for the Control
of Pollution Caused by Electronic
Information Products, SJ/T11364-2006,
means that the product or part does
contain a substance, as detailed in the
chart below, in excess of the following
maximum concentration values in any
homogeneous material: (a) 0.1% (by weight) for lead,
mercury, hexavalent chromium, polybrominated biphenyls
or polybrominated diphenyl ethers; or (b) 0.01% (by
weight) for cadmium. Unless otherwise stated by SCS in
writing, this information represents SCS best knowledge
and belief based upon information provided by third party
suppliers to SCS.
Iii?
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SCS - 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website: StaticControl.com
Part or Component Name
Hazardous Substances or Elements
(Pb) (Hg) (Cd) (CrVI) (PBB) (PBDE)
Termination in capacitor 0603 X O O O O O
Solder in diode X O O O O O
Finish in diode X O O O O O
Terminations in PCBs X O O O O O
Terminations in resistors 0603 X O O O O O
Plating in resistors 0603 X O O O O O
Resistor ink in potentiometer X O O O O O
Solder in instrument X O O O O O
Solder in IC X O O O O O
Solder in buzzer X O O O O O
Audio jack X O O O O O
O: Indicates that this hazardous substance contained in all of the homogeneous materials
for this part is below the limit requirement in the SJ/T11363-2006.
X: Indicates that this hazardous substance contained in at least one of the homogeneous
materials used for this part is above the limit requirement in the SJ/T11363-2006.
This numerical reference should not be construed as a representation regarding the product’s life or an extension
of a product warranty. In the event any product is proven not to conform with SCS’s Regulatory Information Sheet,
then SCS’s entire liability and buyer’s exclusive remedy, will be at SCS’s option either: (i) replacement of product
with a conforming product, or (ii) refund of the purchase price paid by buyer for each nonconforming product, within
areasonabletimeafterwrittennotificationofsaidnonconformanceandreturnofsaidproducttoSCS.SCSshallnot
under any circumstances be liable for direct, incidental, special, or consequential damages (including but not limited
tolossofprofits,revenue,orbusiness)relatedtoorarisingoutofthiscertification,including,theuse,misuseor
inabilitytousetheproduct.Unlessstatedotherwiseinwriting,theforegoinglanguagecannotbewaived,modified,
or supplemented in any manner whatsoever.
This is the EU symbol for equipment that is covered under the Waste from Electrical and Electronic Equipment
(WEEE)directiveperCENELECSpecification5041.Itindicatesthatcertainproductsshouldnotbediscarded
in the trash, but rather should be recycled. This applies to all electronic pluggable and battery powered
products.
FCC
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
INDUSTRY CANADA
This Class A digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe A est conforme á la
NMB-003 du Canada.
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions
See the SCS Warranty -
http://staticcontrol.descoindustries.com/warranty.aspx