Campbell Scientific CS725 Snow Water Equivalency Sensor - Manual (Page 10)

CS725 Snow Water Equivalency Sensor
Coverage Beam Angle: 60°
Operating Temperature: -40° to +40°C
Maximum Cable Length: 30 m (95 ft) (9600 bps or less)
Cable Type: 4 conductor, 2-twisted pair,
22 AWG, Santoprene jacket
Dimensions
(Without Collimator)
Length: 62 cm (24.4 in)
Diameter: 12.7 cm (5 in)
Weight
Main
Body: 9.0 kg (20 lbs)
Collimator: 25 kg (55 lbs)
Total: 34 kg (75 lbs)
3. Wiring
The wiring for the CS725 connector-cable assembly is as follows:
Color Function Connection
Black Power Ground System Ground and/or RS-232 Receiver
Ground
(Pin 5 of a computer (DTE) DB-9 connector)
Red +12VDC Power Power Source
Green RS-232 (Sensor
Output)
Recorder/Reader RS-232 Input
(Pin 2 of a computer (DTE) DB-9 connector)
White RS-232 (Sensor Input) Recorder/Reader RS-232 Output
(Pin 3 of a computer (DTE) DB-9 connector)
Clear Shield Shield/Earth Ground
4. Connecting the CS725 to a Computer
The CS725 can communicate directly to PC using a terminal program such as
Hyperterminal. To provide a DB9 connection between the CS725 and a PC’s
RS-232 port, the DB9F-TERM interface PCB is used. The DB9F-TERM is
shipped with the CS725. The following diagram demonstrates how to connect
the CS725 to the DB9F-TERM.
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