J And N SENSIT GOLD User manual

SENSIT®GOLD
For use with Combustible Gases
and optionally available
Oxygen and Toxic Gases
INSTRUCTIONMANUAL
J And N Enterprises, Inc.
851 Transport Drive
Valparaiso, IN 46383
Phone: [phone]
[phone]
Fax: [phone]
www.gasleaksensors.com
10/03 UL-V1
WARRANTY
Your SENSIT®GOLD is warranted to be free from defects in
materials and workmanship for a period of two years after pur-
chase (excluding calibration and batteries). If within the war-
ranty period, your instrument should become inoperative from
suchdefects, theunit willbe repairedor replacedat ouroption.
This warranty covers normal use and does not cover damage
whichoccursin shipmentorfailurewhich resultsfromalteration,
tampering,accident, misuse,abuse, neglector impropermain-
tenance. Proofof purchasemaybe requiredbefore warrantyis
rendered. Units out of warranty will be repaired for a service
charge. Internalrepair ormaintenancemust becompletedby a
JAndNauthorized technician. Violationwill voidwarranty.Units
must be returned postpaid, insured and to the attention of the
ServiceDept. forwarrantyorrepair.
This warranty gives you specific legal rights and you may have
other rights which vary from state to state.
J And N Enterprises, Inc.
851 Transport Drive
Valparaiso, IN 46383
Phone:[phone]
[phone]
Fax:[phone]
Approved UL913, For Class 1,
Division 1, Groups C & D
hazardous locations when used
with alkaline batteries.
7WA6
C
L
A
S
S I
F
I
E
D
Read and understand
instructions before use.
Warning:
To prevent ignition
of flammable or
combustible
atmospheres,
disconnect power
before servicing.

CONTENTS
Page # 1 Parts and Accessories
2 General Description
3 Specifications
4 Product Features
6 Sensor Types and Pumps
7 Battery Installation
8 Operation and Use
13 Calibration Check (Bump Test page 17)
14 Menu
19 Adjustable Features - Factory Only
20 Calibration
23 Warranty
PARTSANDACCESSORIES
Standard Accessories (included)
Two Piece -Polycarbonate Bar Hole Probe Assembly, Carrying
Case, Alkaline Batteries, Wrist Strap, Extra Sensor Cap with O-
Rings and Instruction Manual
Accessories and Replacement Parts
ASG0150 Extension Adapter
ASG0128 Hydrocarbon Filter (6)
AJN02023 Hot Air Probe Assembly
AJN02017 32” Fiberglass Bar Hole Probe with Filter
AJN02013 Confined Space Probe with Tubing
ASG0500-P Printer
AJN02033-PCI PC Interface
CSC00100 SMART-CAL™Automatic Calibration System
PJN0110 Sensor Cap with O-Rings
Calibration Kits Contact us for correct Calibration Kit.
1 2
(Continued on page 3)
The Sensit®Gold is designed to detect combustible gases,
oxygen content and toxic gases when so equipped with the
available sensors. Each model of the Sensit®Gold provides
specific detection features based on available sensor options.
Each Sensit®Gold can be re-configured or upgraded by the
manufacturer for an additional charge should your sensing re-
quirements change. Consult J And N Enterprises, Inc. for a
listingof newsensors availablefor usewith theSensit®Gold.
All Sensit®Gold instruments incorporate low power semicon-
ductor sensor to measure combustible gases in LEL (Lower
ExplosiveLimit) range. An automaticallybacklit displayshows
all gas concentrations being measured. LEDs located on the
front of the instrument indicate preset visual warnings of in-
creasedgasconcentration. Allgases arecontinuouslysampled
with the use of an internal pump.
GENERALDESCRIPTION
SENSING FEATURES
SENSIT GOLD
INSTRUMENTS
®
MODEL EX
EX-CO
EX
EX-CO
EX-TOX
4GAS
Plus
Plus
Plus
MODEL
MODEL
MODEL
MODEL EX-TOX
MODEL
MODEL
LEL
ALARMS LEL DISPLAY LEAK DETECTION CARBON MONOXIDE OXYGEN HYDROGEN SULFIDE

3
GENERAL DESCRIPTION continued from page 2
Audibleandvisualalarmswarn theoperatorofhazardouscondi-
tions being sensed. The preset alarms are indicated by a red
flashingLED, displayindicator andalarm sound. Thecombus-
tiblegasalarm ispreset50%LEL methane.Thecarbonmonox-
ide(CO) alarmispreset at50ppm.The oxygen(O2) alarmsare
presetat below19.5% andabove23.5%. Thehydrogen sulfide
(H2S) alarm is preset at 10ppm.
The Sensit®Gold instruments is approvedbyUnderwritersLabo-
ratories to UL913, for Class 1, Division 1, Groups C & D hazardous
locations when used with alkaline batteries.
SPECIFICATIONS
SENSORSPECIFICATIONS
TYPE RESOLUTION RANGE ACCURACY
Leak N/A 0-50,000ppm N/A
LEL 0.1% 0-100% ±10%
O20.1% 0-25% ±0.2% or 2%*
CO 1ppm 0-2000ppm ±5ppm or 5%*
H2S 1ppm 0-100ppm ±2ppm or 5%*
* Whichever is greater
PRODUCTSPECIFICATIONS
Size: 11.5” x 3” x 2.32” (292 x 76 x 69 mm)
Weight: 1.2 lbs.
Operational Temp: 0 to 120° F
Storage Temp: -20° to 132° F
BatteryLife: Alkaline: approximately 16 hrs. continuous
4
Sensit®Gold instruments are constructed of durable Cycoloy
plastic to withstand the rigors of field use.
Incorporatedinthe handgripareais thebattery compartment.
All Sensit®Gold instruments require 3 “C” type alkaline or re-
chargeable batteries. Duracell MN 1400 batteries provide ap-
proximately 16 hours of continuous use. A tick adjust knob,
whenso equipped,is locatedonthe rightside oftheinstrument
toactivatetheaudibleticksound thathelpsinlocatingthesource
of a gas leak. This tick is generated by using specialized cir-
cuitry in combination with the LEL sensor located at the end of
the gooseneck assembly.
PRODUCTFEATURES
BACKLIT
2 LINE DISPLAY
SPEAKER
(ON BACK)
WARNING LED’S
16”FLEXIBLE
GOOSENECK
IR LED
(DOWNLOADING) LUER PROBE
CONNECTOR
SENSOR CAP WITH
WATER/DIRT FILTER
LEAK/LEL
SENSOR
PUSHPAD
BUTTONS
BATTERY
COMPARTMENT
ALL OTHER
SENSORS &
PUMPS (INTERNAL)
(Continued on page 5)

5
PRODUCT FEATURES continued from page 4
The tick can be easily heard with the speaker located in the
back of the instrument.
An infrared LED is located on the right side to allow the
Sensit®Goldinstrumentstodownloadcalibrationdataandread-
ings the operator has elected to save to the instrument’s on-
boardmemory.
A flexible gooseneck is used to assist in locating the source
ofgas leaks andremotesampling. Awater/dirt trapislocated at
the end with a convenient luer style connector to attach sam-
plingand probeaccessories.
A two line display continuously updates the operator of all
availablegasconcentrations andalarmssimultaneously aswell
as indicatesinternalfunctionssuchasairflowandbatterypower.
Belowthe displayis aseries ofLEDs thatare presettoindicate
combustiblegas concentrations. TheredLED ontheright side
willflash duringany alarmcondition.
There are 3 operational button pads on the front of all
Sensit®Gold CGI instruments.
•LEFT BUTTON: Operates power andmute features.
•CENTERBUTTON:Operates a Bar Hole (BH) Test mode to
assistinpinpointing undergroundleakage
andoperates auser menu to calibrate,
download and set the clock.
•RIGHT BUTTON: Activates thesave featureand performsa
manual zeroing of the sensors.
Pressing any button will produce a click sound.
Combustible Gas Sensor
AllSensit®Goldinstrumentsincorporateahighlysensitivesemi-
conductor type sensor. The function and accuracy of the sen-
sor are monitored and controlled by specialized circuitry and a
microprocessor. This sensor is capable of measuring concen-
trations as low as 50ppm of methane (natural) gas up to 100%
LELmethane.
Electrochemical Sensors (optional)
AllSensit®Gold instruments whenequipped withthefollowing
optional sensors, microprocessor and associated circuitry will
measureoxygenlevels from0-25%;measurecarbon monoxide
(CO)levels from0-2000ppm; measurehydrogen sulfide(H2S)
levelsfrom 0-100ppm. All gasesare displayedsimultaneously
on the display.
The Pump
TheSensit®Goldinstrumentsareequippedwitha powerfuland
efficient rotary vane pump. A water/dirt filter at the end of the
gooseneck protects the pump from foreign material. An addi-
tional internal filter protects the pump from damaging debris if
theprimary filterismissing ordamaged. There areaudibleand
visual indicators that will show a blocked or improperly operat-
ingpump.
SENSORTYPES AND PUMPS
6
This safety symbol is used to indicate
a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
NOTICE
CAUTION

BATTERYINSTALLATION/REPLACEMENT
Batteryreplacement is necessarywhen thedisplay readsBAT
LOW,anaudiblealarmsoundsandthegreenreadyLEDflashes.
WhenBAT LOWisdisplayed,the instrumenthasapproximately
30minutes of usefuloperation timeprior to shutoff.
CAUTION: Always change batteries in an environment
free of combustible gases.
Removethe batterysleeve coverbydepressing thelocking tab
on the front of the handle (yellow) with a coin or flat object and
pulling the handle away from the top or display area of the in-
strument.
Place 3 approved batteries into the battery holder. For best
resultshold thebattery compartmentso thatit laysin yourright
hand. With your left hand install the battery that goes toward
the front first. The battery that is in contact with the rear spring
secondandfinally insertthethird batteryinthe centerbyforcing
thesecond batterysuchthat thespring compressesandallows
the batteries to go into place. If you do not use your right hand
tohold thebottom ofthebattery compartmentthe batteriescan
come out.
Observethepolaritymarkingson theinsideofthebatteryholder.
Improper installation will cause the instrument not to operate.
Replace the battery sleeve and allow the locking tab to snap
into position.
Checkto besurethe handleissecure to theinstrumentbody by
gentlypulling thehandle away. Thehandle willremain firmlyin
place if a proper connection is made.
78
(Continued on page 9)
1. Pushthe POWERbuttonto initiateoperation. Abeep willbe
heardduring anybuttonactivation.
CAUTION: Always start any Sensit®Gold in a gas free
environment to insure a proper zero.
2. Ifthedisplay failstoilluminate or“BATLOW”is shownonthe
display, replaceor rechargethe batteries. There is room inthe
carrying case to keep an extra set of alkaline batteries.
3. Uponsuccessful start-up,thepump willstartand thedisplay
will illuminate. The instrument will then display:
a.Productnameand softwareversion.
b.System check for proper pump and battery
operation.
c.Date and time.
d.SerialNumber.
e.Display “CALPAST DUE” only when calibration is
overdue.
f. Warm-upcountdownfor10 seconds.
g.Display“AUTOZERO” indicatingthezeroing ofall
sensors.
h.Any sensor that is completely inoperable during start
up will be indicated by “FAIL” on the display in the
locationwhere readingswouldnormally belocated.
TheGREEN READYLIGHTwill notilluminate
indicatingthe instrumentrequires service.
OPERATIONANDUSE