Extech Instruments 421509, User Manual

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421509-en-GB_v2.6 8/16
9
Specifications
General Specifications
Display 4-1/2 digit (19,999), 3-Display, LCD with LED 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)