UEi Test Instruments INF155 - Manual (Page 4)

Lens Care
The sensor lens is the most delicate part of the thermometer. The lens
should be kept clean at all times. Care should be taken when cleaning
the lens using only a soft cloth or cotton swab with water or medical
alcohol. Allowing the lens to fully dry before using the thermometer. Do
not submerge any part of the thermometer in liquids.
WARNING!
Under NO circumstance should you expose batteries to extreme heat or
fire as they may explode and cause injury.
NOTE: 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.
Specifications
EMC/RFI
Readings may be affected if the unit is operated within radio frequency
electromagnetic field strength of approximately 3 volts per meter, but
the performance of the instrument will not be permanently affected.
IR Thermometers
I n f rared Thermometers measure the amount of thermal radiation emitted
from an objects surface. To take a measurement, the object must be
within the field of view of the infrared thermometer, or the reading may
include objects surrounding your target. This target size is determined in
the distance to spot ratio stated on the instruments specifications. At a
ratio of 10 : 1, a distance from your target of ten feet will give you a circle
with one foot diameter. At 20:1 ratio gives the same one foot target now
at 20 feet, so you can see that higher is better, but ty p i cally more
expensive due to the cost of the optics involved.
Measurement range -58˚ to 750˚F (-50˚ to 400˚C)
Operating range 32˚ to 122˚F (0˚ to +50˚C)
Accuracy (Toby=15˚ - 35˚C, +/-2% of reading or 4˚F (2˚C)
Tamb=25˚C whichever is greater
Emissivity 0.95 fixed
Resolution (-9.9˚ - 199.9˚F) 0.1˚F/0.1˚C
Response Time (90%) 1 second
Distance Spot Ratio 10:1
Battery life Standard “AAA” (x2)1.5V,
14 hours continuous
Dimensions 175.2 x 39 x 71.9 mm
Weight 179 grams including batteries
2 “AAA” 1.5 batteries
Battery Indicators
The thermometer incorporates visual low battery
indications.
: “Battery OK” measurements
are possible
: “Battery Low” battery needs to be
replaced, measurements are
still possible
: “Battery Exhausted” measurements
are not possible
M a i n t e n a n c e
Periodic Service
WARNING!
Repair and service of this instrument is to be performed by qualified
personnel only.
Cleaning
Pe r i o d i cally clean your instrument’s case using a damp cloth. DO NOT
use abrasive, flammable liquids, cleaning solvents, or strong detergents as
they may damage the finish, impair safety, or affect the reliability of the
s t r u c t u ral components.
Battery Replacement
Always use a fresh replacement battery of the specified size and type.
Immediately remove the old or weak battery from the meter and
dispose of it in accordance with your local disposal regulations. Old or
defective batteries can leak chemicals that corrode electronic circuits.
To replace the battery:
1. Slide the battery cover straight down then away from the
INF155 (Fig 2).
2. Replace with fresh “AAA” (2x) batteries.
3. Replace cover.
INF155-MAN P. 3
(Fig 2) “AAA” (x2)