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)

1

15

J2

J3

J4

J1

CX2

CX1

ST2

ST3 ST1

ST4

RG

R18

RX1 RX2

R6

J5

1 2 3 4 5

TP1

RP2

RP6

TP2

RP1

RP3

RP5

RP4

TP3

TP4

B +Out

B+ Adju st

Bridge Bal

AMP Out

Output Offset

Input Offset

Coarse Gain

Fine Gain

Filtered Output

COM

STRAIN GAGE BRIDGE AMPLIFIER MODULE

WITH OPEN-COLLECTOR OUTPUT

OM2-163, $370, shown
larger than actual size.

OM2-163

$

370

⻬1⁄4, 1⁄2, and

Full-Bridge Inputs

⻬ Gain of

2 to 5000

⻬ Remote Sensing

Eliminates Lead
Resistance Effects

⻬ On-Board Bridge

Balance Trimpot

⻬ DIP Switch Cutoff

Frequency Adjustment

⻬ Bridge Supply from

4 to 10 Vdc

1

⁄2 Bridge Completion

⻬

Resistors On-Board

1

⁄4 Bridge Completion

⻬

Resistor—User Supplied

The OM2-163 is a complete signal
conditioning system on a card
designed expressly for single
half- or full-bridge transducers.
It consists of a high-performance
instrumentation amplifier, a user­adjustable active filter, a high-stability
bridge supply, and all the required
circuity, trimpots, etc. To get a
complete system up and running, the
only required point-to-point wiring is
inputs, outputs, and power.

The unit provides coarse and fine
gain adjustments, along with input
and output offset adjustments, DIP
switches for setting the bridge
supply output, and active low-pass
filter cutoff frequency.

SPECIFICATIONS

Gain Range: 100 to 500 card only,

2 to 5000 with external resistor

External Gain Resistor Calculation:

R = 100,000/(gain – 2)

Output Max: ±10 Vdc
Linearity: 0.002%
Input Offset Voltage (Adjustable):

±2 mV

Input Power: ±15 Vdc @ 45 mA
Bridge Supply: 4 to 10 Vdc @ 120 mA
Load Regulation: 0.02% max
Noise Voltage: 1 mVrms max
Dynamic Response @ Gain 100:

10 kHz
Gain Temp Coefficient: ±75 ppm/°C

using trimpots; 25 ppm/°C alone

C-49

Input Resistance:

Differential 10 MΩ

Common Mode: 500 MΩ
Common-Mode Voltage: -7 to 7V
Minimum Load Resistance: 2 kΩ
Hysteresis: 8 mV max
Leakage Current: 10 µA
Response Time: 70 µs
Operating Temperature Range:

-25 to 55°C (-13 to 131°F)

114.3
(4.5)
Max

Dimensions: mm (in)

63.5
(2.5)
Max

BRIDGE SUPPLY OUT

EXCIT. ADJ

SET POINT ADJ

SET

OUT OFFSET ADJ

INPUT OFFSET ADJ

COARSE GAIN ADJ

FINE GAIN ADJ

AMP OUT

MINUS IN

PLUS IN

A
B
C
D
E
F
H

J
K
L

M
N

P

R

S

FIXED GAIN RESISTOR
(OPTIONAL)

J1

J3

J2

STRAIN GAGE BRIDGE AMPLIFIER MODULE

WITH OPEN COLLECTOR OUTPUT

OM2-165, $325,

OM2-165

shown actual size.

$

325

⻬ Solid State Open-

Collector Output
(100 mA max)

⻬ Integral Zero and Span

Adjustments

⻬ Gain of 10 to 1000
⻬ Remote Sensing

Eliminates Lead
Resistance Effects

The OM2-165 module is a complete
signal conditioning system designed
for use with strain gage–based
transducers. It provides 4 to 10 Vdc
to excite a strain gage or other
type of bridge signal. A sensitive
comparator that can be connected
to monitor the amplifier output is
included. The comparator drives a
solid state switch that can be used
to operate a relay, light, or audible
alarm. The solid state switch has
non-latching and latching capability.
It is packaged in a state-of-the-art
hybrid circuit, which is mounted on a
PC board mounting kit containing all
required external circuitry and trim
potentiometers.

The card has trimpots for coarse
and fine gain adjustments,
input adjustments, and offset
adjustments. DIP switches set the
bridge supply output. A complete
instrumentation or control system
can be set up using the OM2-165,
a power source, and a strain gage
type transducer. The OM2-165
module has a user-selectable gain
between 10 and 1000.

SPECIFICATIONS

Gain Range: 10 to 1000
Output Max: ±10 Vdc
Linearity: 0.01%
Input Offset Voltage (Adjustable):

±2 mV

Input Power: ±15 Vdc @ 45 mA
Bridge Supply: 4 to 10 Vdc @ 100 mA
Load Regulation: 0.01% max
Noise Voltage: 1 mV rms max
Dynamic Response @ Gain 100:

10 kHz

Gain Temp Coefficient: ±50 ppm/°C

C-50

Input Resistance:

Differential 10 MΩ

Common Mode: 500 MΩ
Common-Mode Voltage: -7 to 7V
Minimum Load Resistance: 2 kΩ
Open Collector Output: 16 Vdc

@ 100 mA

Hysteresis: 8 mV max
Leakage Current: 10 µA
Response Time: 70 µs
Operating Temperature Range:

0 to 70°C (32 to 158°F)

104
(4.1)
Max

63.5
(2.5)
Max

Dimensions: mm (in)

ACCESSORIES

C

MODULAR SIGNAL CONDITIONING SYSTEM

1

⁄4, 1⁄2, FULL BRIDGE, 1 TO 8 CHANNELS

AVAILABLE FOR FAST DELIVERY!

To Order (Specify Model Number)

MODEL NO. PRICE GAIN RANGE* DESCRIPTION

OM2-162 $355 2 to 5000 Signal conditioning module for
OM2-163 370 10 to 1000 Signal conditioning module for

OM2-165* 325 10 to 1000 Signal conditioning module for full-strain bridge circuits or

ACCESSORIES

MODEL NO. PRICE DESCRIPTION

OM2-8608-115AC $520 115 Vac powered backplane for 8 OM2 signal conditioning modules with power supply

and mounting rails included

OM2-8608-230AC 520 230 Vac powered backplane for 8 OM2 signal conditioning modules with power supply

and mounting rails included

OM2-8608-24DC 520 DC-powered backplane for 8 OM2 signal conditioning modules with power supply and

mounting rails included; 10 to 36 Vdc power

OM2-8608-48DC 520 DC-powered backplane for 8 OM2 signal conditioning modules with power supply and

mounting rails included; 24 to 72 Vdc power

OM2-2006 235 115 Vac powered backplane for one OM2 signal conditioning module with power supply

(mounting rails not included; not compatible with OM2-163)

OM2-2005 52 Backplane for one OM2 signal conditioning module (screw terminals only;

not compatible with OM2-163)

OM2-8100 45 Two 16" mounting rails (2 rails already included with OM2-8608)

Comes complete with operator’s manual.

Ordering Example: Complete system, including OM2-162, signal conditioning module for
OM2-2006, single module back panel with power supply and OM2-8100, mounting rails, $355 + 235 + 45 = $635.

* Limited supply/product discontinued.

OM2-8608-115AC, 8-position
backplane, $520.

transducers with open-collector output

transducers with open-collector output

OM2-2006, 115 Vac
single-position
backplane, $235.

1

⁄

2 and full-strain bridge circuits

1

1

⁄

⁄

4,

2 or full-strain bridge circuits or

* 10V maximum.

1

⁄2 and full-bridge strain gage measurement,

OM2-2005, single-

position backplane,

$52.

SPECIFICATIONS

For OM2-8100 Mounting Rails
Length: 16" total; 15" usable

Spacing: 0.5" spaced mounting holes
Material: Black anodized aluminum

OM2-8100,
mounting rails, $45.

SPECIFICATIONS

FOR OM2 SERIES BACKPLANES
MODEL OM2-8608-115AC OM2-8608-230AC OM2-8608-24DC OM2-8608-48DC OM2-2006 OM2-2005

Input Range 115 Vac ±10V 230 Vac ±10V 10 to 36 Vdc 24 to 72 Vdc 115 Vac ±10 V N/A
Frequency 50/60 Hz 50/60 Hz N/A N/A 50/60 Hz N/A
Temperature 0 to 55°C 0 to 55°C 0 to 55°C 0 to 55°C 0 to 55°C 0 to 55°C

Size 159 x 419 mm 159 x 419 mm 159 x 419 mm 159 x 419 mm 89 x 175 mm 70 x 83 mm

Weight 1.43 kg 1.43 kg 0.62 kg 0.62 kg 425 g 113 g

32 to 131°F 32 to 131°F 32 to 131°F 32 to 131°F 32 to 131°F 32 to 131°F

(6.25 x 16.5") (6.25 x 16.5") (6.25 x 16.5") (6.25 x 16.5") (3.5 x 6.9") (2.75 x 3.25")

(3 lb, 3 oz) (3 lb, 3 oz) (1 lb, 6 oz) (1 lb, 6 oz) (15 oz) (4 oz)

C-51

All models shown
smaller than actual size.

One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | [e-mail]

EPG05

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