Vaisala PTB200 - Manual (Page 28)

PTB 200 27 (28)
Digital Barometers
SSD/Operating Manual 24th February 1993 PTB200-O0284-1.1
GENERAL CHARACTERISTICS (factory settings*)
Supply voltage 10 ... 30 VDC, polarity protected
Supply voltage sensitivity negligible
Current consumption < 25 mA
< 10 mA (sleep mode)
< 0.1 mA (shutdown mode)
Serial I/O RS 232C* full duplex serial I/O or
bidirectional TTL level serial I/O
code ASCII
parity even*, odd, none
data bits 7* or 8
stop bits 1* or 2
Pulse output pulse output at about 4.5 kHz;
10.000 pulses = 1000.0 hPa
Pressure units hPa*, kPa, mbar, inHg, mmHg,
torr, psia
Baud rates 300, 600, 1200*, 2400, 4800,
9600
Resolution
PTB 200 A 0.01 hPa*
PTB 201 A 0.1 hPa*
Settling time after power-up
PTB 200 A 2 seconds*
PTB 201 A 1 second*
Pressure step response time
PTB 200 A 500 ms*
PTB 201 A 300 ms*
Acceleration sensitivity negligible
Pressure connection M5 (10-32) internal thread
Pressure fitting barbed tube for 1/8" I.D. tubing
Maximum pressure limit 5000 hPa abs.
Minimum pressure limit 0 hPa abs.
Cable bushing for 5 ... 10 mm diameter cables
Electrical connections
excitation supply, GND, CTRL (for
shutdown)
serial communication TX, RX, GND
pulse output PULSE, PULSE TRIG, GND
Electrical connectors screw terminals for AWG 22...16
wire
Housing epoxy painted aluminium
Weight 950 g