Desco SCS-73627 Installation and operating instructions

Resistance Pro Meter Kit
Installation, Operation and Maintenance
Figure1. SCS-73627 Resistance ProMeter Kit
Description
The SCS-73627 Resistance ProMeter Kit is
an instrument designed tomeasureresistance
point-to-point (Rtt) or surface toground(Rtg).
Itstest functionsinclude:
lResistance measurementaccuracyof 10%
(20%accuracyfor 1x1012 ohmsandgreater)
lResistance range of<1x103ohmsto>1x1012
ohms
lUnder load voltagesof10and 100volts 5%
lElectrificationperiod ofapproximately15 seconds
The Resistance ProMeteralso measuresambient
temperatureand relativehumidity. Upto100
measurementsmaybe stored andrecalledfromthe
meter'sinternalmemory.Thisincludes the resistance
value, temperature, relativehumidityand test voltage
at the timeofthe measurement.
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The Surface Resistance Meter isreferenced and
designedtobe usedtomakemeasurementsin
accordancewiththe test procedures in:
lCompliance Verification-ESD TR53-Resistance
Measurements
lWorksurfaces-ANSI/ESDS4.1Worksurfaces
lFloors-ANSI/ESDS7.1-Resistive-
Characterization ofMaterialsFloor Materials
lFoot Grounders-ESDSP9.2-Foot Grounders
ResistiveCharacterization
lGarments-ANSI/ESDSTM2.1Garments
Seating-ANSI/ESDSTM12.1-Seating-Resistive
Measurement
lFloor/Footwear-ANSI/ESDSTM97.1-Floor
MaterialsandFootwear- Resistance
Measurement inCombination withaPerson
“AComplianceVerificationPlan shallbe established
toensurethe Organization’sfulfillment ofthe
technicalrequirementsofthe ESDControlProgram
Plan. Process monitoring (measurements) shallbe
conducted inaccordance withaCompliance
Verification Plan that identifies the technical
requirementstobe verified, the measurement limits
and the frequencyat whichthose verificationsshall
occur.The ComplianceVerification Planshall
document the test methodsand equipment used for
processmonitoringand measurements. Ifthe test
methods used bythe Organizationdifferfromanyof
the standardsreferenced inthisdocument, then
theremust be atailoring statement that is
documented aspart oftheESDControlProgram
Plan. Compliance verification records shallbe
established and maintainedtoprovide evidence of
conformitytothe technical requirements.The test
equipment selected shallbe capableofmaking the
measurementsdefined inthe Compliance
Verification Plan.”(ANSI/ESD S20.20section 7.3)
SCS
USERGUIDETB-9092
Made in the
United StatesofAmerica

The Resistance ProMeterand itsaccessoriesare
availableinthe following itemnumbers:
Item Description
SCS-73627 Resistance ProMeter Kit
770761 Resistance ProMeter
REM002 SingleSurface Electrode
REM003 DualSurface Electrode
770762 Carrying Case
770764 Test Leads
770765 HandheldElectrode
770757 StandardTwo-Point Probe
REM001 MiniTwo-Point Probe
Packaging
SCS-73627Resistance ProMeterKit
1Resistance ProMeter
2Test Leads, 5'Length
1SingleSurface Electrode
1DualSurface Electrode
4AAAlkaline Batteries
1Ground PlugAdapter
1Gator Clip
1PlasticCarrying Case
1CertificateofCalibration
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SCS-73627Resistance ProMeter
1Resistance ProMeter
4AAAlkaline Batteries
1CertificateofCalibration
Figure3. 770761 Resistance ProMeter
Figure2. SCS-73627 Resistance ProMeter Kit

Features and Components
Resistance ProMeter
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A.Test Jacks: The shielded blacktest lead’smale
SMAconnector connectsintothe meter'sfemale
SMAconnector, and the red test lead’sbananaplug
connectsintothe meter'sbanana jack.
B. Exponent LEDs: TheseLEDsindicatethe
Surface resistance exponent value.Theyarecolor
codedfor resistance decade quickchecks.
Exponent Color
<3, 3 Yellow
4, 5, 6, 7, 8, 9, 10 Green
11, 12, >12 Red
(i.e. 8= 10⁸ohmsor 100,000,000ohms).
C. OLEDDisplay: Displaysthe temperature,
relativehumidity, batterylife, test voltage and
resistance measurement.
D. PowerSwitch: Slide the switch tothe left to
powerthe meterOFF.Slidethe switch tothe rightto
power the meter ON.
E. BlackPushbuttons: Each blackpushbutton
corresponds tothe promptson the bottom-left and
bottom-right ofthe display.These buttons areused
toaccess the Settings andMemoryRecallmenus
and scroll up anddownbetween menu options.
F. RedPushbutton: Corresponds tothe prompts
locatedinthe bottom-center ofthe display.This
button isused toperformtestsand select menu
options. Pressand holdthisbutton wheninthe
Settings and MemoryRecall menus toexit and
returntothe homescreen.
Figure4. Resistance ProMeter Featuresand
Components

G. BatteryCompartment: Open thiscompartment
toinstallthe fourAAalkaline batteriesneeded to
power the meter. Replace the batteries once the
batteryicon on the displayisempty.
Home/ Test ResultsScreen
Figure5. Home/Test Resultsscreen
H. BatteryLifeIndicator: Displaysthe approximate
lifeofthe meter's4AAalkaline batteries.
I. RelativeHumidity: Displaysthe relativehumidity.
J. TestVoltage: Displaysthe test voltage used to
completethe measurement.
K. Temperature: Displaysthe ambient temperature.
L. ResistanceMeasurement: Displaysthe
resistance measurement inohms(Ω).
SettingsManu
Figure6. Settings menu
M. FirmwareRevision: Displaysthe meter's
firmwarerevision.
N. Temperature: Setstheunit ofmeasurement for
temperaturetoeither Fahrenheit (ºF) or Celsius (ºC).
O. Stabilization Mode: Setsthe meter's
Electrificationperiod settingtoeitherAutoand Fixed
Stabilization.
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Auto- Enables a15-second electrificationperiod
w
hen the measured resistance is1x1010 ohmsor
greater tomaintaintest accuracy.
Fixed - ComplieswithANSI/ESDS4.1and enables
A15-second electrification period when the
measured resistanceis1x106ohmsor greater.
P. Beep: Enablesand disables the audiblebeep
w
hen the meter'spushbuttons arepressed.
Q. Erase all memory: Erases all stored
measurement transactionssaved inthe meter's
memory.
MemoryRecall Menu
Figure7. Settings menu
R.MemorySlot Number: Indicates the memory
slot number.
S. Resistance Measurement: Indicates the
resistance measurementvalue for the respective
memoryslot.
Operation
General Guidelines
Use bothofSingleandDualSurface
ElectrodesforResistance Point-to-Point (Rtt)
measurements.
Use the Single-Surface-Electrode, and connect the
blacktest leadtogroundfor Resistance-to-Ground
(Rtg) measurements.
Ensurethat the itembeingmeasurediselectrically
isolated (placed on aninsulativesurface). The
meter will measurethe lowest resistance path.
Minimizecrossingthe test leads when possible.

Whenmeasureing point topoint resistance(Rtt):
lPlace twoelectrodesno closer than 2"fromthe
edge ofthe surfacebeing measured.
lPlace twoelectrodesno closer than 3"toany
groundablepoint.
lPlace twoelectrodesabout 10"apart fromeach
other forRtt measurementsofaworksurface.
lPlace twoelectrodesabout 3'apart fromeach
other forRtt measurementofafloor.
Preferableelectrode placementsinclude:
lMost commonlyused areaofasurface
lMost wornarea
lCenter ofsurface
lFurthest areafromagrounded point
Ifthe surface tobe measured has sections (i.e. floor
tiles, garment panels), place twoelectrodes on
different sections for Rtt measurements.
Clean the material’ssurface for test lab
measurements, but do not clean thesurface for
materialsthat arealreadyinstalled. Onlyclean and
re-test the installedmaterialiffailureoccurs.
MeasureResistance-to-Ground (Rtg)
Test Procedureinaccordance withANSI/ESDS4.1
section6.4PeriodicWorksurface Testing:
1.Donot cleanthe surface.
2.Removefromthe surfaceonlythose itemsthat
might interferewiththe test. ESD sensitive
devices shallalso beremoved.
3.Connect the blacktest leadtoagrounded point.
4.Connect the red test lead tothe Single-Surface-
Electrode, thenplacethe electrode
onthe furthest
convenient point on the surface.
5.Pushthe red pushbutton toperformatest.
Shouldthe 15-secondelectrification period
appear, it maybe bypassedbypushingthe red
pushbutton asecond time.
6.Pushthe right blackpushbutton tosavethe
Measurement ifdesired.
7.Performadditionalmeasurementsbyplacingthe
electrode on the most commonlyusedor worn
area.
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MeasureResistancePoint-to-Point (Rtt) onthe
Surface
1.Donot cleanthe surface.
2.Removefromthe surfaceonlythose itemsthat
might interferewiththe test. ESD sensitive
devices shallalso beremoved.
3.Connect onetest leadtothe Single-Surface-
Electrode, another test leadtothe Dual-Surface-
Electrode’sblackjack, thenplacetwoelectrodes
on the most commonlyused area ofthe surface.
4.The diskside ofthe Dual-Surface-Electrode
shouldbe used inthiskindoftest.
5.The electrodes shouldalsobe 2"awayfromany
edge and 3"awayfromany grounded point. If
the most used area isnot obvious, usetwo
pointsnear the center ofthe surface.
6.Pushthe red pushbutton toperformatest.
Shouldthe 15-secondelectrification period
appear, it maybe bypassedbypushingthe red
pushbutton asecond time.
7. Push the right blackpushbuttonto savethe
measurement ifdesired.
8. Performadditionalmeasurementsbyplacing the
electrode on the most commonlyused orworn
area.
MeasureSurfaceResistanceandResistivity
1.Place the materialtobe tested on an insulative
surface.
2.Place the Dual-Surface-Electrode on topofthe
materialtobe tested.The concentricring side
shouldbe used inthiskindoftest.
3.Connect bothtest leadstothe Dual-Surface-
Electrode’sblackandwhitejacks.
4.Pushthe red pushbutton toperformatest.
Shouldthe 15-secondelectrification period
appear, it maybe bypassedbypushingthe red
pushbutton asecond time.
5.Pushthe right blackpushbutton tosavethe
measurement ifdesired.

Resistivityand Resistance PerANSI/ESDSTM11.11
section12.0 “CONVERSIONTO RESISTIVITY,
Whenit isappropriatetoconvert aresistance
obtained bythistest method toan equivalent
resistivityinohmsper square, multiplythe resistance
measurementsobtained by thismethodbyten.The
conversionfactor often isderived fromt
he geometry
ofthe electrodeassembly. NOTE: Conversionsto
resistivitymaynot be validfor materialsthat are
laminated, platedor metallized withconductive
materials.Thisfact shouldbe understood when
usersofthistest procedurearerequired tosatisfy
specificationsgiven in “ohms/square.”
MeasureSamll Samples orSmall Area on aLarge
Sample
1.Place the sampletobe tested on an insulative
surface.
2.Connect bothtest leadstothe Two-Point-Probe
3.Compress the spring-loaded pins on the
Two-Point-Probe downwardontothe sampleto
the end. Ensurethat your skindoes not make
contact withanyofthe metalon the probe
4.Pushthe red pushbutton toperformatest.
Shouldthe 15-secondelectrification period
appear, it maybe bypassedbypushingthe red
pushbutton asecond time.
5.Pushthe right blackpushbutton tosavethe
measurement ifdesired.
MeasureFloorMaterialsand Footwear-
Resistance Measurement inCombinationwitha
Person (ANSI/ESDSTM97.1)
1.Connect the red test lead tothe Handheld-
Electrode, connect the blackleadtothe Single-
Surface-Electrode.
2.Put the Single-Surface-Electrode on thefloor, a
person stands on the floorand holdthe Handheld
-
Electrode.
3.Pushthe red pushbutton toperformatest.
Shouldthe 15-secondelectrification period
appear, it maybe bypassedbypushingthe red
pushbutton asecond time.
4.Pushthe right blackpushbutton tosavethe
measurement ifdesired.
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Maintenance
The Resistance ProMeterrequireslittle
maintenance.Therearenouser serviceableparts.
Ifthe meter requires service beyond cleaning the
electrodes or replacingthe batteries.
BatteryReplacement
Replace the batteries oncethe batterylifeindictator
isempty. Open the compartment locatedon the
backofthe meter toreplace the batteries.The
meter uses fourAAalkalinebatteries. Ensurethat
the batteries’polaritiesareoriented inthe correct
fashiontoavoidanypossiblecircuit damage.
Cleaning theResistance ProMeter
The areasurrounding the test jacksat the top end
ofthe meter shouldbe wiped withaclean,
isopropanol-alcoholmoistened clothtoremoveskin
oilsthat willaccumulateand affect the meter’s
accuracyat high resistances.The frequencyof
cleaning will depend on usage. SCSrecommends
cleaning thisarea once amonth. Cablejackets
shouldalso becleanedinthisfashion.
Cleaning theElectrodes
PerANSI/ESDS4.1 “Cleanthe electrodes witha
minimum70%isopropanol-water solution. Make
surethe electrodes’conductivepads aredrypriorto
use.”
See specificproduct test standards for test lab
specimencleaninginstructions.PerANSI/ESDS4.1
Worksurfaces “The test specimens and electrodes
shallbe cleanedtwice withaminimum70%
isopropanol-water solution using aclean, low-linting
clotheach time.”(Note:The itemshouldthen be
conditioned for 72 hoursminimum)

Calibration
Frequencyofrecalibrationshouldbe based onthe
criticalnatureofthose ESDsensitiveitemshandled
and the riskoffailurefor the ESD protective
equipment and materials. Ingeneral, SCS
recommends that calibration be performed annually.
In-house calibration can beperformed byusing 1%
tolerance resistorsineach ofthe meter'sdecade
ranges.Connect the resistorstothe test leads using
clips andrecordthe meter’sdisplay. Minimize
crossing the test leads when possible. Contact SCS
Customer Serviceshouldadjustmentsbenece
ssary.
Specialequipment isrequired toadjust the meter.
RequiredEquipment
lDigitalMultimeter ( 1.25%accuracy@10VDC
and 100VDC)
lResistance Decade Box witharange of103to
1012 ohms( 2%accuracy@ 103to1010 ohms;
5%accuracy@ 1011 to1012 ohms)
lThermometer ( 1°Faccuracy)
lRelativeHumidityMeter ( 2%accuracy)
l99%IsopropylAlcoholandCleaningWipes
Setup
lTestArea-needs tobe freeofanyhigh voltage
transformersor power supplies andawayfrom
anytype offluorescent lighting or high power
lighting.
lWorksurface-needs tobecovered witha
grounded conductivemat at 1.0x103or less.
lTechnician-needs tobe connected toequipment
lgroundwitha0ohmresistor inthe groundcord.
lDecadeBox-
needstobe connected toequipment
ground.
Normalization of theMeter
The temperatureinside thetesting areaneeds tobe
75°F 3°F(23.9°C 1.7°C) at 40%to60%relative
humidity.The meter needstostayat atemperature
of75°F 3°F(23.9°C 1.7°C) for approximately1
hour for proper readings.The meter cannot be
normalized inside objects, enclosed boxes,
containersor cases.The temperatureinsidean
enclosedcasewilldiffer fromthe outside
temperature.
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Thesecases willact as insulators.The metermust
remainstationaryinthe testing areafor about 1
hour without anysignificant changes tothe
temperature.
NOTE:Accuracyismeasured after normalizing the
meterfor aminimumof1hour.
Calibration Verification Procedure
1.Use onlythe test leadsthat weresuppliedwith
the meter.
2.Use 99%isopropylalcoholtocleanthe twotest
jacks located at the top ofthe meter. Oil from
human fingerscan affect the accuracyofthe
meter.
3.Connect the test leads tothe test jacks located
atthe top ofthemeter.Connectthe oppositeend
ofthe test leads toaDCvoltmeter.
4.Press the redpushbutton.The measured voltage
shouldstart at 10V 5%and increaseto100V
5%at the end ofthe test cycle.
5.Connectthe testleadstothe Resistance Decade
Box.Applythe loadresistance values indicated
inthe tablebelow.The meter shoulddisplay
accuracywithin 10%ofthe loadedresistance
value.
L
oad
Resistance
Accuracy
Display
Value
Exponent
LED
1x1012
+20%
1.20x10
12
12
-
20%
8.00x10
11
11
1x1011
+10%
1.10x10
11
11
-
10%
9.00x10
10
10
1x1010
+10%
1.10x10
10
10
-
10%
9.00x10
09
9
1x1009
+10%
1.10x10
09
9
-
10%
9.00x10
08
8
1x1008
+10%
1.10x10
08
8
-
10%
9.00x10
07
7
1x1007
+10%
1.10x10
07
7
-
10%
9.00x10
06
6
1x1006
+10%
1.10x10
06
6
-
10%
9.00x10
05
5
1x1005
+10%
1.10x10
05
5
-
10%
9.00x10
04
4
1x1004
+10%
1.10x10
04
4
-
10%
9.00x10
03
3
1x1003
+10%
1.10x10
03
3
-
10%
<1.0x10
03
<3

Specifications
Resistance Ranges
1x103to1x106ohms@10
Volts, complies with
ANSI/ESDS4.1
1x106to1x1012 ohms@
100 Volts, complies with
ANSI/ESDS4.1
Resistance
Accuracyat 23ºC,
40%R.H.
Resistance easurements
within 10%( 20%
accuracyfor 1x1012 ohms
and greater), complies with
ANSI/ESDS4.1. Under load
voltages of10 Volts 5%
and 100Volts 5%exceeds
requirementsofANSI/ESD
S4.1.
Temperature
Accuracy +/-10%
RelativeHumidity
Accuracy 10 integers
Power Supply 4AAalkaline batteries
Display OLED, 2.7"diagonal, 128x
64 pixelresolution
MemoryCapacity 100 measurements
Operating
Temperature 41ºFto 85ºF(5ºC to30ºC)
Environmental
Requirements
Indoor use onlyat altitudes
less than6500ft. (2km)
Maximumrelativehumidity
of80%up to85°F(30°C)
Dimensions
(meter)
3.94"x8.27"x1.26"
100mmx210mmx32 mm
Dimensions
(carrying case)
15.0"x14.5"x3.5"/
381mmx368mmx89mm
Weight (meter with
batteries) 0.9 lbs/ 0.4 kg
Weight (populated
carrying case) 13.0lbs/ 5.9kg
CountryofOrigin United StatesofAmerica
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LimitedWarranty, WarrantyExclusions, Limit
of Liabilityand RMARequest Instructions
See the SCSWarranty-
StaticControl.com/Limited-Warranty.aspx