Martel Electronics 303, 306 Operating Manual
303
TYPE K J THERMOMETER
MARTEL ELECTRONICS
HOLD
T1 T2
T1 T2
TYPE K
TYPE J
T2
200C1370
200
328CF
T1
C
REL
2498F328 F
760
1400
F
C
C
F
C O N T E N T S
TITLE PAGE
I. Introduction ....................................................1
II. Specifications ................................................1
III. Symbol Definition and Button Location.3
IV. Operating Instructions ................................5
4.1 Power-Up...................................................... 5
4.2 Connecting the Thermocouples....................5
4.3 Selecting the Temperature Scale.................
4.4 Selecting the Thermocouple Type................ 5
4.5 Data-Hold Operation.....................................5
4.6 T1, T2, T1-T2 Display Control ......................5
4.7 Relative Operation for Main Display .............6
MAX/MIN/AVG
4.8
Operation for Main Display ....6
4.9 Auto Power Off .............................................7
4.10 Low Battery Condition ................................
4.11 Digital Output.............................................. 7
5
7
MARTEL 303
I. Introduction:
This instrument is a digital thermometer for use with
any K-type and J-type thermocouple as temperature
sensor.
Temperature indication follows National Bureau of
Standards and IEC584 temperature/voltage table for
K-type and J-type thermocouples.
II. Specifications:
Numerical Display:
4 digital liquid crystal display
Measurement Range:
K-Type -200℃ ~ 1370℃
-328℉ ~ 2498℉
J-Type
-200℃ ~ 760℃
Resolution:
Maximum Voltage at Thermocouple Input:
Environmental:
R Operating Temperature and Humidity:
0°C ~50°C (32°F ~ 122°F); 0~80% RH
R Storage Temperature and Humidity:
-10°C to 60°C (14°F ~ 140°F); 0~80% RH
R Altitude up to 2000 meters.
-328℉ ~ 1400℉
K-Type:
-200°C~ 800°C, 0.1°C; 800°C ~1370°C, 1°C
-328°F~ 1000°F, 0.1°F; else 1°F
J-Type:
-200°C~ 600°C, 0.1°C; 600°C ~760°C, 1°C
-328°F~ 1000°F, 0.1°F; else 1°F
60V DC, or 24Vrms AC
1
MARTEL 303
Accuracy: at ( 23 ± 5°C )
Range Accuracy
K-Type -200°C ~ 1370°C ±(0.1% reading + 0.7°C)
J-Type -200°C ~ 760°C ±(0.1% reading + 0.7°C)
K-Type -328°F ~ 2498°F ±(0.1% reading + 1.4°F)
J-Type -328°F ~ 1400°F ±(0.1% reading + 1.4°F)
For T1-T2 Measurement, the accuracy is
±( 0.2% T1-T2 reading + 1.7°C) or
±( 0.2% T1-T2 reading + 3.4°F)
Temperature Coefficient:
For ambient temperatures from 0°C ~ 18°C and
28°C ~ 50°C, for each °C ambient below 18°C or
above 28°C add the following tolerance into the
accuracy spec.
0.01% of reading + 0.03°C ( 0.01% of reading + 0.06°F )
Note:
The basic accuracy Specification does not include
the error of the probe. Please refer to the probe
accuracy specification for additional details.
Sample Rate: 2.5 times per second
Dimension: 7.36”x2.56”x1.2” (184x64x30 mm)
Weight: 7.4oz. Approx. (210g)
Accessories:
K-Type Bead Probe, Battery, Carrying Case,
Instruction Manual
Options:
Software Package (Program, RS232 Connection
Cable), AC Adapter.
Power requirement:
9 Volt Battery, NEDA 1604 or JIS 006P or IEC6F22
2
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