Vaisala DPT145 Betriebsanweisung PDF herunterladen (Seite 13)

Chapter 2 ___________________________________________________________ Product Overview

VAISALA ________________________________________________________________________ 13

CHAPTER 2

PRODUCT OVERVIEW

This chapter introduces the features, advantages, and the product

nomenclature.

Introduction to DPT145

Vaisala Multiparameter Transmitter DPT145 for SF

Gas is a digital

transmitter with a non-isolated RS-485 output. Its compact size makes it

well suited for integration into OEM systems.

DPT145 is always delivered with an integrated mechanical adapter:

DILO DN20, DILO DN8, ABB Malmkvist, or Alstom G1/2". The

connection between the adapter and the transmitter is helium leak tested

at the factory.

DPT145 combines online measurement of dewpoint, pressure, and

temperature. DPT145 also calculates four other quantities, including SF

density.

Table 3 Output Parameters of DPT145

Parameter

Abbreviation

Metric Unit

Non-Metric

Unit

Dewpoint/frost point temperature*

Tdf

ºC

ºF

Dewpoint/frost point temperature*,

converted to atmospheric pressure

Tdfatm

ºC

ºF

ppm moisture, by volume

H20

ppm

Pressure, absolute

bara

psia

Pressure, normalized to 20 °C

(68 °F)

Pnorm

bara

psia

Density

Rhoo

kg/m

Temperature

ºC

ºF

* When the dewpoint is below 0 °C, the transmitter outputs frostpoint for T

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