WARNING!
Do Not expose batteries to high temperatures of flame.
Service
This instrument contains no user serviceable parts. If service becomes
necessary, call UEi and ask for the service department. See the warranty
section of this manual for additional details.
Qualified maintenance or service facilities may request
procedures from UEi for maintaining the INF151 laser at
FDA regulated, factory specification. Contact UEi’s service
department at the address, phone number or web-site listed
on the back cover.
Troubleshooting
Specification Table
Malfunction
Instrument does not
turn on
Data flashes on screen
Laser comes on but no
data appears
Temperature drifts
from known value
in a controlled
environment
Dashes appear during
measurement
Check
Battery check
Time delay
Battery clip
Battery voltage
Battery voltage
Object emissivity
Moisture,
corrosion or debris
on sensor
Excessive EMF
Extreme
temperature
Corrective Action
Replace low battery
Allow 1 second for data
to appear on-screen
Ensure clip grips
battery posts tightly
Replace low battery
Replace low battery
Prepare surface for
infrared measurement
(e.g. - tape)
Clean sensor and allow
to air dry
Move thermometer away
from interfering field
Measure surrounding
area to see if the target
exceeds the limit
Using the Laser Sight
The INF151 is classified as a "Laser Product", and is regulated by
the FDA.
CAUTION!
Using controls, making adjustments, or performing procedures
in any manner other than that specified herein may result in
hazardous radiation exposure.
To select or deselect the laser-sighting feature, press the button
in the middle (marked "LASER") while the trigger is pulled. When the
laser mode is active, a "laser splash" will be displayed in the upper
right portion of the LCD screen. The laser will activate on subsequent
measurements until it is deselected using the middle button. Use of
the laser reduces battery life and is recommended for use on an
"as-needed" basis only. The laser will remain on for approximately
1/2 second after the trigger is released.
Maintenance
Cleaning
Prevent contact with excessive dust, dirt and liquid contamination.
Foreign substances can interfere with trigger operation and infrared
lens performance.
When the housing becomes soiled, use a mild detergent and a damp
cloth to clean the surface. Use caution to ensure no water or soap is
allowed inside the unit or on the infrared lens.
If the infrared lens becomes contaminated try removing any debris
with low-pressure compressed air, such as that used on computer
keyboards. If the contaminant can not be removed with air, use a
residue free glass cleaning solution on the end of a soft cotton swab.
The swab should be slightly damp and very light pressure should be
applied to the lens.
Battery Replacement
To replace the battery:
1. Slide the battery cover straight down then away from
the INF151.
2. Remove the battery clip from the old battery - a screwdriver
may help in removing clips from battery posts.
3. Replace with a fresh 9-volt battery.
4. Replace cover.
Always dispose of expired batteries in a manner consistent with
local land use regulations
Range
-40 to 700˚F
(-20 to 370˚C)
Resolution
0.1 -40 to 230˚F
(-40 to 110˚C)
1˚ 231 to 788˚F
(111˚ to 420˚C)
Accuracy
-40 ±2% or 2˚F to 382˚F
whichever greater
393 to788˚F ±3% or 3˚F
whichever greater
±1˚F/C
<500 miliseconds
41 to 104˚F (5 to 40˚C)
1"
0.85, 0.90, 0.95
8:1
Repeatability
Response time
Operating
Temperature
Minimum spot diame-
ter
Emissivity
Distance to spot ra t i o
INF151-MAN
P. 3
