Sutron 8310 - Page 225

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 225
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
Number Available
2
Types
Switched battery, Switched +5
Input/Output
Expansion
Future: Additional analog and digital inputs and outputs can be added via external I/O
expansion modules.
Module Types
Analog, 10 channels, 16 bit
Digital, 8 channels, input or output
7310
Electrical
Power Required
10-16 VDC (20VDC max) reverse voltage protected
Satlink Units: 10.4 to 15 VDC
Power Consumption
(8310-N or 8310-O)
<3mA standby
<40mA active typical with display off
Mechanical
Enclosure
NEMA-4 Fiberglass
Dimensions
14”x12”x7.5” (36cm x 31cm x 19cm)
Display
2x20 character backlit LCD
Keypad
6 buttons
SD card slot with activity
LED
For download data and read/write setups
Red Warning LED
Indicates setup or operational error
Green Heartbeat LED
Indicates unit is operating properly
Sensor connections
External terminal removable strips