Omega Products OM2-163 User Manual
MODULAR SIGNAL CONDITIONING SYSTEM
FOR STRAIN GAGE BRIDGES, mV, AND OTHER SENSOR SIGNALS
OM2 Series
Starts at
$
355
⻬ Compact, Light, and
Convenient to Use
⻬ Easy Access
to All Trimpots
⻬ Integral Bridge
Completion Resistors
⻬ Adjustable Bridge
Sensor Excitation
⻬ Adjustable Filter
Frequency—
AC or DC Operation
⻬ Screw-Clamp
Terminal Blocks
OM2-163, modules, $370 each,
with OM2-8608, 8-position backplane,
$520, shown smaller than actual size.
SGD Series strain gage, shown
larger than actual size, see page
E-12 for details.
The OMEGA®OM2 modular signal
conditioning system provides a lowcost, versatile method of
interconnecting a variety of analog
signals to measurement and control
systems. OM2 modules interface
directly with sensors and analog
signal devices such as strain gages
and mV output sensors. The module
conditions the input signal to an
amplified voltage output of
±10 Vdc, allowing longer signal
transmission and interfacing with
data acquisition products such as
analog/digital cards, data loggers,
PLCs, and chart recorders. The
backplane includes a power supply
(to power the modules) and rails
for convenient mounting. All
connections are easily made
with a screwdriver.
The backplane is available with a
115 Vac, 230 Vac, or 10 to 36 Vdc
power supply.The backplane and
LC101, $305, shown actual
size, see section F for details.
signal conditioner assembly
afford a convenient, lightweight, and
accurate method of multiple signal
conditioning in instrumentation
environments. The signal
conditioning modules can also be
used by themselves as single
amplifier devices. An optional
interface mounting block with screw
terminations permits easy power
and output signal hookup. A typical
system includes 6 modules and
1 backplane/power supply
assembly.
C-47
PX209,
pressure
transducer,
$195, shown
smaller than
actual size, see
section B for details.
+15 Vdc A
Common B
Key C
+Sense D
-15 Vdc E
Bridge Supply F
-Sense H
NC J
Ext. Output Offset K
-Input L
+Input M
Filtered Output N
Amplifier Output P
Bridge Completion R
Bridge Balance S
B+ Output
B+ ADJ
Balance ADJ
AMP Out
Output Offset
Input Offset
Coarse Gain
Fine Gain
Filtered Output
COM
TP1
RP2
RP6
TP2
RP1
RP3
RP5
RP4
TP3
TP4
J1
R18
RG
RX1 RX2
R6
SW
CX2
CX1
STRAIN GAGE BRIDGE AMPLIFIER MODULES
WITH INTEGRAL BRIDGE
COMPLETION CIRCUITRY
⻬ Half- or Full-Bridge Inputs
⻬ Integral Zero and Span
Adjustments
⻬ Gain of 2 to 5000
⻬ Adjustable Filtering
⻬ Remote Sensing
⻬ Eliminates Lead
Resistance Effects
⻬ 0.002% Linearity
⻬ DIP Switch Frequency
Cutoff Adjustment
⻬ On-Board Bridge Balance
The OM2-162 is a complete signal
conditioning system on a card
designed expressly for either halfor full-bridge transducers. It
consists of a high-performance
instrumentation amplifier, a useradjustable active filter, a highstability bridge supply, and all the
required circuity, trimpots, etc.
To get a complete system up and
running, the only required point-topoint wiring is for inputs, outputs,
and power.
The unit provides coarse and fine
gain-adjustment trimpots, along with
input and output offset adjustments,
DIP switches for setting the bridge
supply output, and active low-pass
filter cutoff frequency. There are
also provisions for mounting a
quarter-bridge completion resistor
and a calibration resistor, which can
be wired to an external CAL switch.
Two close-tracking half-bridge
completion resistors are included.
SPECIFICATIONS
Gain Range: 100 to 500
(2 to 5000 with external resistor)
External Resistor Calculation:
R = 100,000/(gain-2)
Max Output Voltage: ±10 Vdc
Linearity: 0.002%
Output Offset Range: ±0 Vdc
OM2-162
$
355
OM2-162, $355,
shown larger than
actual size.
ACCESSORIES
C
Input Power:
±15 Vdc @ 12 mA
Bridge Supply: 4 to 10 Vdc @ 130 mA
Line and Load Regulation: 0.05%
Output Noise: 200 pV p-p
Dynamic Response: 10 kHz @ gain
100; adjustable filter 10, 100, 1000 Hz
unfiltered bandwidth 25 kHz
Gain Change with Temperature:
75 ppm/°C
Input Impedance: 4 GΩ
Common-Mode Input Voltage:
±15 Vdc maximum
Input Noise Voltage: 0.1 to 10 Hz,
0.3 µV p-p; 10 to 100 Hz, 1.0 µV p-p
C-48
Half-Bridge Completion:
Nominal Resistance Value: 10 kΩ
Initial Accuracy: ±0.1%
Temperature Tracking: 5 ppm/°C
Balance Adjustment Range: 350 Ω
Bridge: ±15 mV
Operating Temperature:
-25 to 55°C (-13 to 131°F)
Storage Temperature:
-40 to 80°C (-40 to 176°F)
102 (4)
Max
63.5
(2.5)
Max
Dimensions: mm (in)
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