Vaisala DPT145 User's Guide download pdf (Page 23)

Chapter 4 ________________________________________________________________ Installation

VAISALA ________________________________________________________________________ 23

Warning – Read Before Installation

CAUTION

Do not drop or hit the transmitter. The sensor is fragile

and may break from a sudden shock.

When transporting the transmitter, use the original

shipping box from Vaisala.

CAUTION

Do not open the connection between the adapter and

the transmitter. They are connected at the factory, and

the connection should remain unopened to guarantee

tightness.

Use tools only on the nut of the adapter, where the

transport protection cap is connected.

NOTE

Keep the transmitter dry and clean.

Do not remove the yellow transport protection cap

before you are ready to install the transmitter.

Uncapped transmitters will absorb moisture which will

affect the dewpoint measurement.

NOTE

Connect the transmitter directly to the main SF

gas volume, not behind a sampling line.

After installation, the transmitter will have a small

amount of moisture inside it. In still, dry gas it takes a

long time until vapor pressure inside the measurement

cell reaches equilibrium with the main gas tank. It is

not unusual for the stabilization of the dewpoint

reading to take several days after installation.

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Vaisala DPT145 User's Guide Page 23