Vaisala DMP248 Bedienungsanleitung PDF herunterladen (Seite 3)

The DRYCAP® sensor used

in DMP248 measures

water vapour pressure and

temperature to determine

the dewpoint temperature.

The measurement ranges and the

output signals may be selected and

scaled to desired ranges within the

full measurement range.

The transmitter software allows the

user to perform a two point

calibration. The calibration is made

against relative humidity

references, e.g. salt baths, which

can be done by the user. The

transmitter can also be sent to

Vaisala or a Vaisala representative

for a traceable calibration. The

calibration interval depends on the

application where the transmitter is

used. In normal conditions

calibration once a year is

recommended.

CONFIGURED TO YOUR

SPECIFICATIONS

The DMP248 transmitters are

extremely flexible products which

can be configured in many ways –

both in hardware and software.

Manufactured on a production line

where they are configured to the

customer specifications, the

transmitters are shipped

programmed and ready for

installation. If the application

parameters have to be changed,

the transmitter may be easily

adjusted, even in the field by the

end-user.

SETTINGS AND ADJUSTMENTS

MADE EASY

The DMP248 transmitters have

several output variables to choose

from. Settings are easy to change.

Selecting, scaling and calibrating the

analog output signals and

parameters can be done in a few

minutes using simple software

commands.

DMP248 transmitters

incorporate the DRYCAP

®

thin film polymer sensor.

The DRYCAP

®

sensor is

optimized for use in dry

ambients. It is accurate,

reliable and has excellent

long-term stability.

Immune to particulate

contamination,

condensation and most

chemicals, the sensor can

DRYCAP

®

performance

The commands can be given using

the menus on the local display or

with a PC or terminal connected to

the transmitters’ serial bus.

The microprocessor-based

transmitters measure water vapour

pressure and temperature and can

give an output or display in terms

of dewpoint, relative humidity,

ppm

v

and temperature. The

transmitters have two analog

outputs and any two of the four

measured variables may be

selected as output signals.

be used with confidence in

industrial environments.

The unique auto calibration

used together with the

DRYCAP

®

sensor improves

accuracy and stability.

These features make

DMP248 an excellent choice

for dewpoint

measurements.

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