Measurement Computing Personal Daq/3000 Series - Manual (Page 70)

7-4 Specifications 937492 Note : Specifications are subject to change without notice.
Voltage
Range*
Accuracy
±(% Reading + % Range)
23ºC ± 10°C, 1 year
Temperature Coefficient
± (ppm of Reading + ppm Range)/ºC
-30ºC to 13°C and 33ºC to 70ºC
Noise**
(cts RMS)
-10V to 10V 0.031% + 0.008% 14 + 8 2.0
-5V to 5V 0.031% + 0.009% 14 + 9 3.0
-2V to 2V 0.031% + 0.010% 14 + 10 2.0
-1V to 1V 0.031% + 0.02% 14 + 12 3.5
-500 mV to 500 mV 0.031% + 0.04% 14 + 18 5.5
-200 mV to 200 mV 0.036% + 0.05% 14 + 12 8.0
-100 mV to 100 mV 0.042% + 0.10% 14 + 18 14.0
* Specifications assume differential input single-channel scan, 1-MHz scan rate, unfiltered,
CMV=0.0V, 30 minute warm-up, exclusive of noise, range is -FS to +FS.
** Noise reflects 10,000 samples at 1-MHz, typical, differential short.
TC Types and Accuracy
1
TC Type Temperature
Range (°C)
Accuracy
(±°C)
Noise, Typical
(±°C)
J -200 to +760 1.7 0.2
K -200 to +1200 1.8 0.2
T -200 to +400 1.8 0.2
E -270 to +650 1.7 0.2
R -50 to +1768 4.8 1.5
S -50 to +1768 4.7 1.5
N -270 to +1300 2.7 0.3
B +300 to +1400 3.0 1.0
1 Assumes 16384 oversampling applied, CMV = 0.0V, 60 minute warm-up, still environment, and
25°C ambient temperature; excludes thermocouple error; TC
IN
= 0°C for all types except B
(1000°C), TR-2 for External Power.
Oversampling Effect on Measurement Noise
0.1
1
10
-300 -200 -100 0 100 200 300 400
Measured Temperature (ºC)
P
-P
N
o
ise
in M
e
as
ur
em
ent
(º
C)
Type T Thermocouple (Lines represent theoretical noise)
16384
8291
4096
256
512
1024
2048