Vaisala DRYCAP DMT143 Uživatelská příručka stáhnout pdf (Strana 52)

USER'S GUIDE ____________________________________________________________________

50 ___________________________________________________________________ M211435EN-E

Set Pressure Compensation Value

The pressure of the measured system must be known for accurate

dewpoint and ppm measurement. The pressure compensation value has

been set at the factory according to the order form. You can view and set

a new value using the PRES command.

Command XPRES should be used if the value is changed frequently.

The value set using the XPRES command overrides the PRES value, but

it is not retained at reset. When the XPRES is set to 0, the last value set

with PRES is used instead.

NOTE

It is enough to set an approximate pressure value (±1 bar) to meet the

accuracy specification of the DMT143.

PRES [pp.ppppp]<cr>

XPRES [pp.ppppp]<cr>

where

pp.ppppp

Absolute pressure (bar

) in the measuring point.

Range 0.001 ... 50 bar.

Example (set pressure compensation value to 3 bar):

pres 3

Pressure : 3.000 bar

The pressure conversion coefficients from other pressure units to bars is

given in the table below.

Table 10 Pressure Conversion Coefficients

From

To bar

PaN/m²

0.00001

mmHg torr

0.001333224

inHg

0.03386388

mmH

0.00009806650

inH

0.002490889

atm

1.01325

0.980665

psi

0.06894757

For example: 29.9213 inHg = 29.9213 × 0.03386388 = 1.01325 bar

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 75 76

Komentáře k této Příručce

Žádné komentáře

Vaisala DRYCAP DMT143 Uživatelská příručka Strana 52

Komentáře k této Příručce

Související produkty a manuály pro Měření, testování a kontrola Vaisala DRYCAP DMT143