
Operation
When the Touch Tester’s power supply is plugged into a grounded
outlettheredLEDwillbeon,indicatingthattheunitispowered.The
utilitygroundisinternallyconnectedtothe.395”(10mm)snapstud
on the back of the unit and to the 2 banana jacks at the bottom edge
of the tester.
TB-2004Page2of2
Audible Option
Ifdesired,theTouchTesterwillaugmentthevisual“testgood”
indicatorwithanaudiblesignal.Inthe“on”position,thetesterwill
beepwhenthegreen“testgood”LEDison,therebyallowingthe
operatortofrequentlytestthewristbandandcordwithouthavingto
look at the tester.
Toenable/disablethesignal,aslideswitchisaccessiblethroughthe
holeonthebackoftheunit.First,unplugthepowersupply.Actuate
the switch with a small probing tool, being careful to avoid internal
damage.
GROUND
POINTS
Banana
Jacks
10mm
SnapStud
DESCO WEST -3651WalnutAvenue,Chino,CA91710(909)627-8178
DESCO EAST - OneColgateWay,Canton,MA02021-1407(781)821-8370WebSite:
Desco.com 2014DESCOINDUSTRIESINC.
EmployeeOwned
ATTACHMENT
ALTERNATIVES
HOOK&LOOP
FASTENER
SNAPS
CONNECTOR
FORP-6911
ACADAPTER
Figure 5. Attachment alternatives
A wrist strap is plugged into one of the banana jacks or into any
common grounding point. When the wearer of a wrist strap touches
themetallictestsurface,thegreen“testgood”LEDwilllightif
the operator-to-ground resistance is between 750k ohms and 10
megohms.
Proper Ground
The integrity of the utility ground must be tested before the Touch
Tester is plugged in. The Touch Tester utilizes the “green wire”
groundasthestaticground.Eachoutletmustbetestedforproper
groundingpriortouse.Outletscanbecomeungroundedovertime
due to corrosion, wear, or vibration.
Desco recommends our model
98130ACOutletAnalyzer&Wrist
StrapTesterwhentestingelectricaloutletsforpropergrounding
andwiring.Fordetailedinformationonthe
98130, ask for Technical
Figure 7. Ground points
Figure 8. Accessing the audible signal
Figure 9. Calibration of tester
DCOutput
IECInput
Figure 6. AC Adapter, 220 Volt
Calibration
We recommend annual calibration of our testers. The model
19350 is
calibratedtoNISTtraceablestandards.Calibrationmaybeperformed
to ensure that the tester is operating within limits.
Desco offers a calibration unit that is specifically designed to simplify
the calibration procedure. This unit is sold as item #07010. The 07010 comescalibratedtoNISTtraceablestandards.AskforTechnical
BulletinTB-2039fordetailedproceduretocalibratethe19350.Ifyou
are familiar with the procedure, the following resistance should give
thedisplayshown:
Resistance Value (±1%)
Test Output
675Kilohms:
Red(Low-hazard)
825Kilohms:
Green(OK-inlimits)
8.5Megohms:
Green(OK-inlimits)
11.5Megohms:
Red(Highresistance)
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions