Micro Load Cell (0-780g) – CZL616C

A load cell is a force sensing module – a carefully designed metal structure, with small elements called strain gauges mounted in precise locations on the structure. Load cells are designed to measure a specific force, and ignore other forces being applied. The electrical signal output by the load cell is very small and requires specialized amplification. Fortunately, the 1046 PhidgetBridge will perform all the amplification and measurement of the electrical output.

Load cells are designed to measure force in one direction. They will often measure force in other directions, but the sensor sensitivity will be different, since parts of the load cell operating under compression are now in tension, and vice versa.

This Single Point Load Cell is used in small jewelry scales and kitchen scales. It’s mounted by bolting down the end of the load cell where the wires are attached, and applying force on the other end in the direction of the arrow. Where the force is applied is not critical, as this load cell measures a shearing effect on the beam, not the bending of the beam. If you mount a small platform on the load cell, as would be done in a small scale, this load cell provides accurate readings regardless of the position of the load on the platform.

Sensor Properties

Sensor Type	Shear Load Cell
Weight Capacity Max	780 g
Maximum Overload	936 g
Creep	1.6 g/hr
Zero Balance	± 11.7 g
Cell Repeatability Error Max	± 390 mg
Cell Non-Linearity Max	390 mg
Cell Hysteresis Max	390 mg
Temperature Effect on Span	39 mg/°C
Temperature Effect on Zero	39 mg/°C

Electrical Properties

Rated Output	800 ?V/V
Rated Output Error Max	± 100 ?V/V
Output Impedance	1 k?
Supply Voltage Max	5 V DC

Physical Properties

Compensated Temperature Min	-10 °C
Compensated Temperature Max	40 °C
Operating Temperature Min	-20 °C
Operating Temperature Max	55 °C
Cable Length	20 mm
Cable Gauge	30 AWG
Material	Aluminium Alloy
Screw Thread Size	M3x0.5

The Data Sheet below has a comprehensive glossary that describes in practical terms the meaning and usefulness of the specifications.

• Load Cell Primer
• Mechanical Drawing