Omega Products DRC-4710 Installation Manual

DRC-4710

Bridge Input Signal Conditioner

INSTRUCTION

SHEET

M4738/0109

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Description:

The DRC-4710 is a DIN Rail mount, self-contained DC
powered module designed for load cell, strain gage, or
single ended use. The DRC-4710 contains a precision
instrumentation amplifier, filtered output and a built­in 10V excitation supply capable of driving a 350 ohm
bridge. The 0 to 30mV input range makes it compatible

with most strain gage based load cell or pressure
transducer outputs. The DRC-4710 provides an output of
0 to 10Vdc. Connections are made via easily accessible
screw clamp terminal blocks. Zero and Span adjustment
potentiometers are located externally as well for easy
access.

Amplifier

Gain
Adjustment Range
Input for 10V Output

333 to 1000

10mV to 30mV

Linearity: 0 to 10V Out ±0.01%

Temperature Coefficient 0.05% / ºC

Input Offset Voltage
Temperature Coefficient

±70µV

0.7µV / ºC

Common Mode Voltage 0 to +5 Volts

Common Mode Rejection - DC 100 dB

Input Noise

0.1Hz to 10Hz

0.3µV pp Typ

Output

Output Range 0V to +10V

Load Current 5mA Max

Frequency Response
2 Pole Filter

DC to 10Hz

Total RMS Gain
Temperature Coefficient

0.007% / ºC

Bridge Supply

Fixed Output +10V ±1.5%

Temperature Coefficient 0.05% / ºC

Load Current 30mA Max

Power Requirements

Voltage 18 to 26 VDC

Input Current (1 - 350 Ohm Bridge) 40 mA

Environment

Operating Temperature 0ºC to +55ºC

Storage Temperature -40ºC to +80ºC

Size

Size
(Not including Universal Foot for
standard DIN EN Rails)

1.65”H x 1.06”W x 3.78”L
(42 x 27 x 96mm)

Weight 3 oz. (85g)

Agency Approval

UL, CE UL508, UL1604, CE

Pending

Features:

Low Cost
Din Rail Mount
Load Cell or Single Ended Application
0-10V

•

•

•

•

2

FULL BRIDGE CONNECTION

SINGLE ENDED

1. Hook Up Procedure
A. Connect the +out of the load cell to the +INPUT, pin 3.

B. Connect the -out of the load cell to the -INPUT, pin 4.
C. Connect the +excitation of the load cell to +EXCITATION,

pin 1.

D. Connect the -excitation of the load cell to -EXCITATION,

pin 2.

E. Connect the +24 VDC power supply to +24V, pin 8 and

COM, pin 7.

2. Turn on Procedure
A. Verify that the hook up procedure is complete.

B. Turn on the +24 VDC power source connected to the

DRC-4710.

3. Calibration Procedure
A. Jumper the +INPUT and the -INPUT terminals, pins 3
and 4, together.
B. Check the Gain Switch Table, and set SW1-1 and SW1-2
to the expected full scale output of the load cell.

Getting Started with the DRC-4710

SW1-1 SW1-2

FULL SCALE

LOAD CELL INPUT

OFF OFF 30 mV

ON OFF 20 mV

ON ON 10 mV

C. Connect a voltmeter across the output, pins 5 and 6.
D. Adjust the Zero Adjustment potentiometer for the
desired output.
E. Remove the jumper from the +INPUT and -INPUT
terminals.
F. With no load on the load cell, readjust the zero output.
G. Apply a known load to the load cell; in most cases it
would be 100% of full scale.
H. Adjust the SPAN ADJUSTMENT potentiometer for the
desired full scale output.

I. Repeat steps F thru H until the desired settings are

obtained.

DRC-4710 BRIDGE INPUT SIGNAL CONDITIONER