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Extech Instruments 421509 Manuel D’Utilisation

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Model 421509   Version 1.1   09/04 
2 
Specifications 
General Specifications 
Display 
 
4-1/2 digit (19,999), 3-Display, LCD with EL Backlighting
 
Input Protection
 
24VDC or 24VAC rms maximum input on any combination of 
inputs. Max voltage between T1 and T2 inputs is 1V
 
Reading rate
 
2.5 times per second
 
Input connectors
 
Accepts standard sub-miniature thermocouple connectors
 
Alarm Output 
6-pin mini DIN, max. 5mA@5 to 30VDC (external source) 
Operating conditions
 
32 to 122
o
F (0 to 50
o
C); less than 80% RH
 
Storage conditions
 
-4 to 140
o
F (-20 to 60
o
C); less than 70% RH
 
Dimensions / Weight 
 
7.5 x 3.6 x 2.1” (192 x 91 x 52.5mm); 11.7oz. (365g)
 
Power Supply
 
9V battery or optional AC Adaptor
 
Auto Power off 
User programmable from 5 to 19999 minutes 
Battery life
 
100 hours typical
 
Range Specifications 
Thermocouple Range 
Resolution 
K type 
-328 to 2501
o
F (-200 to 1372
o
C) 0.1
o
F (0.1
o
C), 
1
o
F > 2000° 
J type 
-346 to 2192
o
F (-210 to 1200
o
C) 0.1
o
F (0.1
o
C), 
1
o
F > 2000° 
T type 
-328 to 752
o
F (-200 to 400
o
C) 0.1
o
F (0.1
o
C) 
E type 
-346 to 1832
o
F (-210 to 1000
o
C) 0.1
o
F (0.1
o
C) 
R type 
32 to 3212
o
F (0 to 1767
o
C) 1
o
F (1
o
C) 
S type 
32 to 3212
o
F (0 to 1767
o
C) 1
o
F (1
o
C) 
N type 
-58 to 2372
o
F (-50 to 1300
o
C) 0.1
o
F (0.1
o
C) 
Accuracy Specifications 
Thermocouple Accuracy 
K, J, T, E types 
±(0.05% rdg + 0.6
o
F) -58
o
F to 2501
o
F 
±(0.05% rdg + 1.4
o
F) -58
o
F to -346
o
F 
±(0.05% rdg + 0.3
o
C) -50
o
C to 1370
o
C 
±(0.05% rdg + 0.7
o
C) -50
o
F to -210
o
C 
N type 
±(0.05% rdg + 1.6
o
F) -58
o
F to 32
o
F 
±(0.05% rdg + 0.8
o
F) 32
o
F to 2372
o
F 
±(0.05% rdg + 0.8
o
C) -50
o
C to 0
o
C 
±(0.05% rdg + 0.4
o
C) 0
o
F to 1300
o
C 
R, S types 
±(0.05% rdg + 4.0
o
F) 32
o
F to 3212
o
F 
±(0.05% rdg + 2.0
o
C) 0
o
C to 1767
o
C 
Temperature 
Coefficient 
0.1 multiplied by the accuracy per 
o
C from 0
o
C to 18
o
C and 28
o
C to 
50
o
C (32
o
F to 64
o
F and 82
o
F to 122
o
F) 
Supplied 
Thermocouples 
4', type K (with teflon insulation) Max insulation temp: 500
o
F (260
o
C) 
Accuracy: ± 4
o
F (±2.2
o
C) or ± 0.75% of rdg (whichever is greater) 
from 32 to 1472
o
F (0 to 800
o
C)