Campbell-scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Bedienungsanleitung PDF herunterladen (Seite 19)

EC150 CO

O Open-Path Gas Analyzer

CSAT3 sonic reporting range

Full scale wind: ±65.6 m/s

Sonic temperature: −50° to 60°C

Auxiliary sensors

vii

Barometer

Internal basic barometer

Accuracy

−30° to 0°C: ±3.7 kPa at −30°C, falling linearly to

±1.5 kPa at 0°C

0° to 50°C: ±1.5 kPa

Measurement rate: 10.0 Hz

Optional enhanced barometer

Manufacturer: Vaisala

Model: PTB110

Accuracy: ±0.15 kPa (−30°C to 50°C)

Measurement rate: 1.0 Hz

EC150 temperature sensor

Manufacturer: BetaTherm

Model: 100K6A1A Thermistor

Accuracy: ±0.15°C (−30

to 50°C)

5.2 Output Signals

The EC100 electronics can output data from the EC150 by several means.

• Campbell Scientific SDM

• RS-485

• USB

• Analog out

Synchronous Device for Measurement communications protocol, or SDM, is a

proprietary serial interface developed by Campbell Scientific for

communication between a datalogger and a peripheral or sensor. In almost all

cases, SDM is the preferred communications protocol with the exception of

measurement heights requiring cable lengths greater than 100 meters. In this

case, RS-485 output is recommended. See Section 4.6.2.1, SDM Output, for

details on SDM output, see Appendix C, Alternate EC100 Outputs, for greater

detail on RS-485, USB, or analog outputs.

SDM communications are output as the FLOAT data type.

5.3 Physical Description

Optical measurement path length: 15.37 cm (6.05 in)

Spatial separation from

CSAT3A sampling volume: 5.0 cm (2.0 in)

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refer to manufacturer’s product brochure or manual for details

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