Vaisala DPT146 Guide de l'utilisateur télécharger pdf (Page 22)

User's Guide _______________________________________________________________________

20 ___________________________________________________________________ M211372EN-D

DPT146 Startup Sequence

When the transmitter is powered up, it will perform the sequence shown

in Figure 7 below. After a five-second startup, the transmitter will

measure normally for five minutes, after which it will perform the sensor

purge and auto-calibration functions. This can take up to six minutes,

during which time the output is frozen: it will display the last measured

values before the sensor purge began.

Normal operation and output is typically achieved no later than 11

minutes after startup. The sensor purge will repeat every 24 hours, and

auto-calibration every hour. The output will again be frozen for their

duration.

1109-016

Figure 7 DPT146 Startup Sequence

NOTE

The

transmitter always performs this sequence when starting up. Keep

the transmitter continuously powered to optimize its measurement

performance and availability.

rma

l ou

tpu

t N

put

Output frozen

5 mi

n 3 ... 6 min

Time

Purge*

3 ... 4 min

<2 min

* Purge

will repeat ev

our

** Autocal will repea

t e

y 6

min

utes

(is

pos

tpo

ned if environment is not

suitable)

artu

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 70 71

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Vaisala DPT146 Guide de l'utilisateur Page 22

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