SMC 144
Instrument temperature (built-in temp. sensor)
measuring range
−
25
÷
60
°
C
uncertainty
±
3
°
C
Digital inputs (optional)
high-level input voltage
U
H
>
10
V
low-level input voltage
U
L
<
3
V
maximum input voltage
U
M
= 30
V
input current @ input voltage
3
mA/
12
V,
8
mA/
24
V
Digital relay output (optional)
switch ratings
230
V
AC
or 30
V
DC
/ 3
A
Digital impulse output (optional)
semiconductor ratings
100
V
DC
/ 300
mA
Communication
interface type
galvanically isolated RS-485
optional interface type
M-Bus
optional interface type
Ethernet 10Base-T
Other specifications
operating temperature
−
25
÷
60
°
C
storage temperature
−
40
÷
85
°
C
operating and storage humidity
<
95 % — non condensing environment
EN 61000 – 4 - 2 (4 kV / 8 kV)
EN 61000 – 4 - 3 (10 V/m, up to 1 GHz)
EMC — emission
EN 61000 – 4 - 4 (2 kV)
EN 61000 – 4 - 5 (2 kV)
EN 61000 – 4 - 6 (3 V)
EN 61000 – 4 - 11 (5 periods)
EMC — immunity
EN 55011 – class A
EN 55022 – class A (not intended for home use)
protection rating
IP 20
dimensions
w
×
h
×
d
= 105
×
90
×
58
mm
mass
0
.
19
kg
22