User`s guide

4. Adjust gain

Connect the shunt resistor simulating strain desired for full scale. Adjust the COARSE

GAIN and FINE gain potentiometers for the desired full scale output.

All wire connections and potentiometers of this equipment are located on the surface of

the enclosure. No discrete gain setting is available, or any gain indications.

4.1.3.4 Comparison of Set-Up Procedures

Due to its lack of discrete gain setting mechanism and gain indication, and long set-up

procedure, Omega is less suitable for the target laboratories. Honeywell and Tacuna are

relatively easy to hook up and calibrate. For both systems, it is recommended that the

connections to be extended to avoid wear of the connection pieces and reduce issues caused by

bad connections in lab.

Comparing Honeywell UV-10 and Tacuna, Tacuna is more preferable. The students

won’t be required to open the enclosure of Tacuna if the gain setting is preset prior to the

laboratory, while the students need to open the enclosure of Honeywell UV-10 to adjust the

ZERO potentiometers, which might induce more complexity to managing the laboratories.

Tacuna also includes internal Wheatstone bridge completion circuit, in additional to the external

circuit set-up option tested in this project.