Vaisala PTB210 SERIES Manuel d'instructions télécharger pdf (Page 27)

2.2.2 Temperature/Humidity - Campbell Scientiﬁc CS215

Function

To complete the monitoring of the conditions inside the BGC-FTIR-Container the

digital Temperature/Humidity Sensor CS215 comes into operation. Figure 2.16

shows the sensor. It features a digital SDI-12 output allowing simple connection to

the Control-Port of the Datalogger CR1000.

Figure 2.16: Campbell Scientiﬁc CS215

[Manual - CS215 Temperature & Relative Humidity Probe,

3/08]

The BGC-FTIR-Container is constructed to have two rooms, a main room where the

FTIR instrumentation is ﬁtted and a secondary room with a built-in air conditioning,

a fuse box and additionally the control unit. Two digital CS215 observe temperature

and humidity in both rooms in order to control air conditions and further on to avoid

high humidity levels by providing data to control the air condition.

Measuring Principle

The core of this sensor is a specially developed, patented semiconductor chip, also

known as "computer chip". Special sensing structures are implemented on the chip

by means of micro systems engineering. They detect precisely and reliably the de-

sired physical parameters, in that case relative humidity and temperature. The

fusion of sensor and evaluation circuitry on one chip named CMOS guarantees that

the sensitive, analog sensor signals can be ampliﬁed and digitized without noise and

with high precision. The scheme of this chip can be found in Fig. 2.17.

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Vaisala PTB210 SERIES Manuel d'instructions Page 27