Omega Products LCKD Installation Manual

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User’s Guide

LCKD SERIES

Subminiature Compression

Load Cells

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LCKD SERIES
Subminiature Compression Load Cells

1

Each LCKD Series Load Cell incorporates a small printed
circuit board into the load cell’s lead wire. DO NOT
remove this board or cut the cable between the
compensation board and load cell. Removal of this board
voids the calibration and warranty of the load cell.

General

The OMEGA®LCKD Series subminiature compression load cells are
compression-only units that are highly cost-effective. To ensure
excellent long-term stability and reliability in severe environments, the
LCKD Series utilize high quality strain gages, precision gaging
techniques and all stainless steel construction. These units have a load
button machined as an integral part of the basic load cell. The load cell
is designed to operate by mounting on a flat surface. The LCKD must
rest on a flat surface the same diameter as the D

1

dimension for proper

operation.

Shunt Calibration

The LCKD Series are highly accurate millivolt output type load cells
with shunt calibrator for quick calibration checks. Shunt calibration
allows the user to install and calibrate the instrument in the field
without the use of a dead weight tester. A 59 kilohm resistor is shorted
across negative excitation and negative signal output at the factory,
which produces a simulated millivolt signal out of the transducer. The
shunt calibration signal is equivalent to a simulated pressure of:

Shunt Cal mV/V

Simulated Load = x Full Scale Load

Calibration Factor mV/V

Example: Model LCKD

Where:

Calibration Factor - 2.0315 mV/V
Shunt Cal - 1.4962 mV/V

Simulated Load = 1.4962

x 50 = 36.85

2.0315

To set up the transducer in the field, follow these steps:

1. Connect transducer excitation terminals to dc power supply.

2. Connect transducer signal output terminals to readout instrument
(DVM, Analog meter, etc.)

3. Turn power on.

4. Null transducer signal output with zero adjust potentiometer on meter.

5. Short a 59 kilohm resistor across negative excitation and negative
signal output.

NOTE