User's Guide

This document is subject to change without prior notification.

Binsfeld Engineering Inc. | 231-334-4383 www.binsfeld.com 869610-9_A2 Pg. 40

For example, given a solid steel shaft with:

(shaft Outer Diameter, measured) = 3.000 inches

GF (Gage Factor from gage package) = 2.08

XMT

(TX10K Gain setting) = 4000

so 10 V output from the RX20K indicates 4,901 ft-lb of torque or

490.1 ft-lb/volt.

Step 2: Scale the Full Scale Output

If desired, the Full Scale voltage output of the TX20K can be scaled so

that it corresponds to a convenient torque value, e.g. 100 ft-lb /volt. As

stated earlier, the System Gain can be adjusted from ¼ to 4 times the

Transmitter Gain. The equation below defines the Scale Factor (Z):

Legend of Terms

Scale Factor (0.25 to 4.0)

Full Scale Torque (ft-lb)

REF

Reference Full Scale Torque (ft-lb)

In the example from Step 1 above, Full Scale Torque (T

) has been

calculated to be 4,901 ft-lb. It may be convenient to scale the output so

that 10 V indicates 5,000 ft-lb (1 V = 500.0 ft-lb). First, calculate the

Scale Factor (Z):

(1510.38 x 10

ft-lb/in

)(3.000 in)

= ────────────────────── = 4,901 ft-lb

(2.08) (4000)

Z = ─────

REF