Physical, Environment, Safety – National Instruments SCXI-1121 User Manual
Page 112
Appendix A
Specifications
A-4
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Note
You can find the temperature T (°C) as follows:
T = T
K
– 273.15
where T
K
is the temperature in kelvin
a = 1.288 x 10
–3
b = 2.356 x 10
–4
c = 9.556 x 10
–8
R
T
= resistance of the thermistor in
Ω
V
TEMPOUT
= output voltage of the temperature sensor
Physical
Dimensions .............................................1.2 by 6.8 by 8.0 in.
Connectors ..............................................50-pin male ribbon-cable rear
connector
32-pin DIN C front connector
(18-screw terminal adapter
available)
Environment
Operating Temperature ..........................0 to 50 °C
Storage Temperature...............................–20 to 70 °C
Relative humidity ...................................10% to 90% noncondensing
Safety
Designed in accordance with IEC61010-1, UL 3111-1, and CAN/CSA
C22.2 No. 1010.1 for electrical measuring and test equipment. Approved at
altitudes up to 2000 meters; Installation Category II; Pollution Degree 2.
T
K
1
a
b
R
T
ln
(
)
c
R
T
ln
(
)
3
+
+
[
]
--------------------------------------------------------------
=
R
T
50000
V
TEMPOUT
2.5
V
TEMPOUT
–
--------------------------------------
=