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Vaisala PTB220 Series - General

Vaisala PTB220 Series
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USER'S GUIDE_______________________________________________________________________
72 ___________________________________________________________________ M210194EN-A
*** Defined as the root sum of the squares (RSS) of end-point non-
linearity, hysteresis error, repeatability error and calibration
uncertainty at room temperature.
**** Defined as ±2 standard deviation limits of temperature
dependence over the operating temperature range.
General
(* factory setting)
Supply voltage 10 ... 30 VDC, reverse polarity
protected
Supply voltage sensitivity negligible
Current consumption
operation mode < 30 mA
with local display < 50 mA
hardware shutdown mode < 0.1 mA
with analog module < 50 mA
with analog module
and local display < 75 mA
Serial I/O full duplex RS 232C * or
bidirectional TTL level or
RS 485/422 half duplex (optional)
code ASCII
parity even*, odd, none
data bits 7* or 8
stop bits 1* or 2
Pulse output TTL level pulses at 5 kHz or 50
kHz
Pressure units hPa*, kPa, Pa, mbar, inHg, mmHg,
torr, mmH
2
O, psia
Baud rates 300, 600, 1200, 2400, 4800, 600*
Resolution
Class A 0.01 hPa*
Class B 0.1 hPa*
Settling time at power-up (one sensor)
Class A 4 seconds*
Class B 3 seconds*
Response time (one sensor)
Class A 2 seconds*
Class B 1 second*
fast measurement mode 0.2 seconds*
Acceleration sensitivity negligible

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