Vaisala HMP240 User Manual
Page 67
HMP240 series
M210300en
User's Guide
65
8.4
Outputs
Two analogue outputs selectable
0...20 mA
4...20 mA
0...1 V
0...5 V
0...10 V
Typical accuracy of an analogue output
at +20 °C
±0.05 % full scale
Typical temperature dependence of
an analogue output
0.005 %/°C full scale
Serial output available
RS 232C
8.5
Electronics
User interface
3 keys and 4 LEDs inside the
housing or local display keypad
Display
2 x 16 character alphanumeric
high-contrast, wide view angle
LCD
character height
3.85 mm (0.15")
Keyboard
1 x 4 keypad
Connections
screw terminals, 0.5 mm
2
wires
(AWG 20), stranded wires
recommended
Operating voltage
24 VDC
24 VAC (see Chapter 3.4.1)
(20...28 V)
Power consumption
200 mA maximum (24 VDC)
during re-gaining
270 mA maximum (24 VDC)
Recommended external load for:
current outputs
<500
Ω
0...1 V voltage output
>2 k
Ω
(to ground)
0...5 and 0...10 V voltage outputs
>10 k
Ω
(to ground)
Pressure range for the probe HMP247
for humidity probe
0...1 MPa
(The entire sensor head
in pressurized space)
(0...10 bar, 0...145 psi)
for temperature probe
0...0.7 MPa
(the entire sensor head
in pressurized space)
(0...7 bar, 0...100 psi)