CS IRGASON, Instruction Manual

Page: 17 / 74

IRGASON
®
Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer
5
5.2 Output Signals
Features
•
EC100 electronics outputs data using:
o CS SDM
o RS-485
o
USB
o Analog out
Digital
SDM (Synchronous Device for Measurement) 1
Data type: FLOAT
RS-485
Data type: ASCII
Output rate: 1 to 60 Hz
Baud rate: 1200 to 230400 bps
USB
Data type: ASCII
Output rate: 10, 20, or 60 Hz
Analog (two outputs for CO
2
and H
2
O densities)
Voltage range: 0 mV to 5000 mV
Resolution: 76 µV (16 bit)
Update rate: 60 Hz
Accuracy (at 25 °C):
±3 mV
CO
2
density equation: mg · m
–3
= 0.38632 · (mV
out
) – 102.59
Full scale range:
–103 to 1829 mg · m –3
H
2
O density equation: g · m –3 = 0.00865 · (mV
out
) – 2.26
Full scale range: –2 to 41 g · m
–3
1
Synchronous Device for Measurement. A Campbell Scientific, Inc. proprietary serial interface for
datalogger to peripheral and sensor communication. See Section 8.1 , SDM Output
(p. 22)
, for details.
2
user selectable
5.3 Physical Description
Optical path length: 15.37 cm (6.05 in)
Sonic path length: 10.0 cm
Sonic path angle from vertical: 30°
Spatial separation between gas analyzer and sonic volumes: 0 cm
Dimensions
IRGASON
Length: 51.5 cm (20.3 in)
Height:
31.1 cm (12.2 in)
Cable Length: 3 m (9.8 ft)
EC100 Enclosure: 24.1 x 35.6 x 14 cm (9.5 x 14.0 x 5.5 in)
Weight
IRGASON with Cable: 2.8 kg (6.1 lbs)
EC100 with Enclosure: 3.2 kg (7 lbs)