A. INTRODUCTION
1.
Congratulations: Thank you for purchasing TPI products. The 381a is
easy to use and built to last. It is backed by a 3 year limited warranty.
2.
Product Description: The 381a is a non-contact and contact tempera-
ture tester with laser sighting to confirm you target. It uses K-type ther-
mocouples with sub-mini connector for contact measurements.
B. SAFETY CONSIDERATIONS
1.
Never point the laser beam at someone’s eyes or look directly into the
beam
2.
Use caution when measuring a shiny surface so the laser does not
reflect back into your or someone else’s eyes.
3.
Do not touch the lens to any foreign object.
4.
Do not expose the unit to damp environments for extended periods of
time.
* Depends upon temperature probe range
C. TECHNICAL DATA
Distance to Spot Ratio
9 : 1
Temperature
Non-contact:
-4° to 572°F (-20° to 300°C)
Range
Contact:*
-148° to 2192°F (-100° to 1200°C)
IR Accuracy @ 23°C
± 5°F (3°C) below 32°F (0°C)
and 0.95 emissivity
32°F to 572°F (0°C to 300°C) ± 2% of rdg or ± 3.5°F (2°C)
whichever is greater
Contact Accuracy
+(0.5% of r 3.5°F (2°C)
Emissivity
0.95
Laser Sighting
Output <1mW, Wavelength 645-660nm, Class II Laser
°F or °C
Selectable (slide switch in handle)
Contact or Non-contact
Selectable (slide switch in handle)
Display Hold
Yes
Response Time
500 millisecond
Spectral Response
7 - 14 um
Operating Temperature
32° to 120°F (0° to 150°C)
Battery Type
9 Volt
D. MEASUREMENT TECHNIQUES
Push Buttons
1.
TRIGGER:
Press and hold the trigger button on the 381a. The thermometer will
power up and the laser will be visible (unless in contact “K” mode). After
releasing the trigger, the thermometer will hold the last reading then automati-
cally turn off after 10 seconds. For extended measurement time simply hold the
trigger on and the termometer will stay in scan mode.
2.
RECALL LAST READING:
To recall the last reading before the unit powered off,
quickly press and release the trigger. The last reading will be displayed for an
additional 10 seconds.
3.
IR/K
The selector switch is located inside the battery compartment in the han-
dle. Simply swing open the two piece handle and position the slide switch. Set
to IR for non-contact measurements or set to K for contact measurements.
When set to K, a K-type probe must be connected to the K-type connector
located at the bottom right side of the handle. If a probe is not connected the
thermometer will display “open” when the trigger is pulled.
4.
°F/°C:
The selector switch is located inside the battery compartment in the
handle. Simply swing open the two piece handle and position the slide switch.
Temperature Measurement (Infrared)
CAUTION: LASER RADIATION - DO NOT STARE INTO BEAM.
OUTPUT <1Mw WAVELENGTH 645 - 660nm. CLASS II LASER PRODUCT.
1.
Set the IR/K selector switch to IR. Turn the thermometer on by holding down
the trigger.
2.
Line up the laser with the target and hold the front of the thermometer nine
inches from the target (spot size will be one inch at this distance).
3.
Read the temperature on the LCD.
Temperature Measurement (Infrared)
1.
Set the IR/K selector switch to K amd connect a K-type thermocouple probe to
the input jack located at the bottom right side of the handle.
2.
Turn the thermometer on by holding down the trigger.
3.
Touch the thermocouple to the item under test.
4.
Read the temperature on the LCD.
E. ACCESSORIES
Item #
Description
A009A
....................................9 Volt Alkaline Battery
A380
......................................Soft Carrying Pouch for 380/381/382/383
