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
