OM-550
u
13
u
2.3 INPUTS
As previously discussed, the OM-550 accepts either voltage or thermocouple inputs.
The Signals discussed in this section are input through one of the channel connectors
on the right side of the OM-550.
2.3.1 VOLTAGE (TRANSDUCER) INPUTS
The Voltage connector used for inputs is a white connector with copper pins.
Figure 2-13
2.3.2 PROBES
Optional Voltage and Current probe sets are available for the OM-550. They provide a
convenient way to connect the OM-550 to voltage or current signals:
PROBE SET
APPLICATION
±2 VDC
VOLTAGE
connects to signals in the ±2 VDC range
±10 VDC VOLTAGE
connects to signals in the ±10 VDC range
4-20 mA
CURRENT
converts 4-20 mA loop currents to ±2 VDC signals
For convenience, the OM-550 can be programmed to Scale data. The following table
includes
m
(slope),
b
(offset) and
dp
(decimal point) settings for common probe
applications:
PROBE INPUT RANGE m b dp PRINT RANGE UNITS
±2 V
±2 VDC
+1.00000
+000000
4
-2.0000 to +2.0000
V*
±10 V
±10 VDC
+0.50000
+000000
3
-10.000 to +10.000
V
0-10 VDC
+0.50000
+000000
3
00.000 to +10.000
V
0-5 VDC
+0.50000
+000000
3
00.000 to+05.000
V
1-5 VDC
+0.50000
+000000
3
+01.000 to +05.000
V
4-20 mA
4-20 mA
+1.00000
+000000
3
+04.000 to +20.000
mA**
* Default label for VOLTAGE channels ** Example only; many UNIT labels are available.
Refer to sections
4.15 UNIT LABELS
and
4.14 VOLTAGE INPUT SCALING
for more
information.
