Extech 422324 Operating Manual
TYPE - K.J.E.T.
PRINTING THERMOMETER
Model 422324
INSTRUCTION MANUAL
CONTENTS
Title Page
I. SAFETY INFORMATION ......................................................... 1
II. SPECIFICATIONS ................................................................... 2
2-1 General Information
2-2 Electrical Specifications
IV. PRECAUTIONS AND PREPARATIONS FOR MEASUREMENT
.........................................................2
..................................................4
10
V. OPERATIONAL GUIDE ......................................................... 11
VI. INTERVAL PRINTING SETUP....................................... 18
VII. BATTERY REPLACEMENT ........................................... 19
VIII. Calibration and Repair Services ..................................... 19
I. SAFETY INFORMATION
Read the following safety information carefully before attempting to
operate or service the meter.
Use the meter only as specified in this manual; otherwise, the
protection provided by the meter may be impaired.
Use caution when working with voltages above 60VDC or 24VAC
RMS. Such voltages pose a shock hazard.
Environment conditions
Altitude up to 2000 meters
Indoor use only
Relative humidity 90% max.
Operational Temperature
32～122οF (0 ～ 50οC)
Maintenance & Cleaning
Repairs or servicing not covered in this manual should only be
performed by qualified personnel.
Periodically wipe the case with a dry cloth. Do not use abrasives
or solvents to clean this instrument.
U.S. Pat. No. Des. 460,923
Safety symbols
Meter is protected throughout by double insulation or
reinforced insulation.
When servicing, use only specified replacement parts.
Complies with EMC
II. SPECIFICATIONS
2-1 General Information
Display: 4-1/2 digit LCD
LCD illustration (see below)
Fig-1
T1-T2 , T2 , T1 Reflects the selected temperature display
configuration
MAX, MIN, AVG Maximum, Minimum or Average reading display
Avg = ½ (Previous reading + Current reading)
K , J , E , T Thermocouple types
HI ALARM Temperature exceeds high alarm limit (setpoint)
LO ALARM Temperature exceeds low alarm limit (setpoint)
Negative polarity; positive polarity assumed
Low battery symbol
℃, ℉
Celsius and Fahrenheit temperature units
Printer active
, ■
TIME Calendar time
INTV Interval printing symbol
h:m Hour : Minutes
m:s Minute: Seconds
m-d Month – Day
yy Calendar year
Seven segment display digit
Interval printing Start /Stop symbol
Over Range or - appears.
Low battery indicator
Sampling Rate 1 reading per second (approx.)
Power Six 1.5V ‘AAA’ cells or 9V (500mA) adaptor
Battery Life (typ.)
30 hours (interval print set to 60 mins. & beeper off)
70 hours (no printing or beeper)
Input protection 60Vdc/24Vrms
Operating Temperature and Humidity
℉
32
to 122℉ (0℃ to 50℃) below 90% RH
Storage Temperature and Humidity
14℉ to 140℉ (-10℃ to 60℃) below 70% RH
Dimensions 7.6 (L) x 2.9 (W) x 1.5 (H)” (193 × 74 × 37 mm)
Weight Approx. 12.8 oz. (365g) with batteries & paper.
Accessories Carrying case, batteries, thermo-paper (2), Alarm
DIN cable and temperature probe (type K)
Printer
Thermo-printing type with 16 characters per line using 38mm
width plain thermo-paper.
Instant printing: Print on demand (button press)
Interval printing: Print at desired interval from 00:00:03 to 23:59:59
2-2 Electrical Specifications
Accuracy
Type K: ±( 0.1% rdg + 0.8℃ ) ( 0～1333℃ )
±( 0.1% rdg + 1.4℉ ) ( 32～2431℉ )
Type J : ±( 0.1% rdg + 0.8℃ ) ( 0～ 760℃ )
±( 0.1% rdg + 1.4℉ ) ( 32～1400℉ )
Type E: ±( 0.1% rdg + 0.8℃ ) ( 0～ 703℃ )
±( 0.1% rdg + 1.4℉ ) ( 32～1297℉ )
Type T: ±( 0.1% rdg + 0.8℃ ) ( 0～ 400℃ )
±( 0.1% rdg + 1.4℉ ) ( 32～ 752℉ )
Type K/J/E/T: ±( 0.5% rdg + 1.0℃ ) ( -200～ 0℃ )
Resolution：0.1℃/0.1℉
(23℃ ±5℃, below 80%RH)
±
( 0.5% rdg + 1.8℉ ) ( -328 ～ 32℉)
Temperature Coefficient:
0.1 times the applicable accuracy specification per ℃ from 0℃ to 18℃ and 28
℃
to 50℃ ( 32℉ to 64℉ and 82℉ to 122℉ )
Measurement Range:
(
℃
℃
℃
℃
(
(
(
Type K: -200 ～ 1333
Type J: -200 ～ 760
Type E: -200 ～ 703
Type T: -200 ～ 400
-328～2431
-328～1400
-328～1297
-328～ 752
)
℉
)
℉
)
℉
)
℉
III. Description of Thermometer
Fig-2
1. LCD
Displays readings, units, symbols, and decimal points
2. POWER
Powers the unit on/off
3. UNIT
Selects the temperature units
(℃ / ℉)
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