Vaisala PTU300 - Manual (Page 187)

Chapter 8 _____________________________________________________________ Technical data
VAISALA _______________________________________________________________________ 185
Inputs and Outputs
Operating voltage 10 ... 35 VDC, 24 VAC
with optional power supply module 100 ... 240 VAC, 50/60 Hz
Start-up time after power-up 3 s
Power consumption at 20 °C (Uin 24VDC)
RS-232 max 28 mA
Uout 3 x 0...1V / 0...5V / 0...10V max 33 mA
Iout 3 x 0...20 mA max 63 mA
display and backlight + 20 mA
during chemical purge + 110 mA max
during probe heating (PTU307) + 120 mA max
Settling time at power-up (one sensor)
class A 4 s
class B 3 s
Analog outputs
current output 0 ... 20 mA, 4 ... 20 mA
voltage output 0 ... 1 V, 0 ... 5 V, 0 ... 10 V
Humidity and temperature
Accuracy of analog outputs at 20 °C ± 0.05 % full scale
Temperature dependency of the
analog outputs ± 0.005 %/°C full scale
Pressure
500...1100 hPa 50...1100 hPa
Accuracy of analog outputs at 20 °C 0.30 hPa 0.4 hPa
Temperature dependency of the
analog outputs 0.6 hPa 0.75 hPa
External loads
current ouputs RL < 500 ohm
0... 1V output RL > 2 kohm
0... 5V and 0... 10V outputs RL > 10 kohm
Wire size 0.5 ... 2.5 mm 2 (AWG 20 ... 14)
stranded wires recommended
Digital outputs RS-232
RS-422/485 (optional)
LAN (optional)
WLAN (optional)
Protocols ASCII commands
Modbus RTU
Modbus TCP
Relay outputs (optional) 0.5 A, 250 VAC, SPDT
Display (optional) LCD with backlight, graphic
trend display
Menu languages Chinese, English, Finnish,
French, German, Japanese,
Russian, Spanish, Swedish