Sutron 8310 - Page 227

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 227
Single Ended
R
a
n
g
e
0-5 V, 78 mV, (with respect to ground)
Differential Range
+2.5V, + 78 mV, ( + input with respect to – input)
CMRR
120 dB typ
Input Impedance
> 10 Gohm typ
Accuracy:
0.002% of 5V typ
(differential
0.003% of 78mV typ HiGain
M
e
a
s
u
r
e
m
e
n
t
s
)
0.03% of 19.5mV typ x128Gain
Temp Coefficient
5 ppm/C typ
Ratio Accuracy
Limited by A/D resolution
Noise floor
RMS noise typically < 1bit on 78mV scale and above
Excitation
2.5V (up to 50 mA)
Protection
Multistage input protection including spark gaps.
4-20 mA
Precision load available for 2 analog channels. Loop source voltage provided by switched
battery voltage
Digital Inputs
Number Available
4
Types
Intended for tipping bucket, frequency or discrete inputs (quadrature takes 2 inputs)
Maximum frequency
8KHz, minimum pulse width 100 microseconds
Input range
0-5V (100KOhm pull-up to +5V provided)
Accuracy
+0.07% @200 ms sample interval
+0.03% @500 ms sample interval
+0.01% @1000 ms sample interval
Max Quadrature
Frequency
4KHz
Digital Outputs
Number Available
2
Output type
Open collector with 100 ohm current limiting resistor, 100 mA, 15V max
Switched Voltages