Model 421504 Version 1.9 December 2004
3
Specifications
General Specifications
Display
5-digit LCD with overload/open-input indication
Over-range and open input Dashes are displayed in place of a temperature reading
Power Supply
9V battery
Battery life
100 hours typical with carbon zinc battery
Auto Power Off
Meter turns off automatically after 30 minutes
Safety
CE approved and water resistant meter housing
Weight
11.73oz. (365 g)
Dimensions
7.56 x 3.58 x 2" (192 x 91 x 52.5mm)
Accessories supplied
9V battery, RTD connectors (2), and protective holster
Range Specifications
Display Resolution
0.2
o
F or 0.1
o
C Resolution
RTD Probe (Pt 385 100
Ω
)
-328 to 1472
o
F (-200 to 800
o
C)
(European curve Alpha = .00385)
RTD Probe (Pt 3926 100
Ω
)
-328 to 1166
o
F (-200 to 630
o
C)
(U.S. curve Alpha = .003926)
Temperature units
Selectable C or F temperature units
Accuracy is specified for operating temperatures in the
range of 64 to 82
o
F (18 to 28
o
C) for a period of one
year, not including the RTD probe error
±(0.05% rdg + 0.2
o
C) for
o
C Scale
Accuracy
±(0.05% rdg + 0.4
o
F) for
o
F Scale
Temperature Coefficient
Multiply the applicable accuracy specification per
o
C
from 0 to 18
o
C and 28 to 50
o
C (32 to 64
o
F and 82 to
122
o
F) by 0.1
Input Protection
24VDC or 24VAC rms max. input on any combination
of inputs.
NOTE: Max. Voltage between T1 and T2 during
measurement = 1V
Reading rate
One reading per second
Input connectors
Accepts standard 3-terminal RTD sub-miniature
connectors (flat blade, 7.9mm spacing)
Ambient Operating Range
32 to 122
o
F (0 to 50
o
C); less than 80% RH
Storage Temperature
-4 to 140
o
F (-20 to 60
o
C); less than 70% RH
