Sutron 8310 - Page 224

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 224
SD card can also read/write setups
Command-line interface for operation without custom programs
Internal real-time clock w/battery backup.
+ 5 sec/month (typical), +10 sec/month (max)
Optional GPS clock
Flash memory log able to handle more than 1,000,000 readings, with additional logging
to SD available
Solar Regulator
Operates as a float charger for sealed 12V lead acid battery.
Built in temperature compensation.
Also accepts DC power supply as charging source (15VDC recommended).
Built in over current and thermal protection.
Rated for solar panels up to 20W. Higher wattage will not damage, but built in
protections may limit power delivered to battery.
SDI-12
V1.3 compliant recorder
Two sets of SDI-12 wiring points on terminal strip
Automatically combines requests to the same device
Analog Inputs
Number Available
8
Input Range
-0.1 to 5V with respect to ground, single ended or differential
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