1 OVERVIEW
1.1 General Overview
Plug & Test
®
sensors accommodate numerous force and torque measurement requirements, from 0.25 to
10,000 lbF (1 N to 50 kN) of force, and from 10 ozFin to 5,000 lbFin (7 Ncm to 550 Nm) of torque. These
sensors can be handheld or mounted to a fixture or test stand for more sophisticated testing
requirements.
Plug & Test
®
sensors are used with Mark-10 M7I, M5I, and M3I indicators. They may be disconnected
from one indicator and connected to another without the need for re-calibration or re-configuration. All
such data is saved within a PCB located inside the smart connector.
Series FS05 and R07 sensors may also be used with Series F test frames.
The model number, serial number, and capacity of the sensor are identified in the rectangular label
located on the connector. The model and serial numbers are also identified in the
Information
screen of
the indicator. Refer to the indicator user’s guides for more information.
1.2 Accuracy and Resolution
Indicator accuracy must be combined with sensor accuracy to determine the total accuracy of the system.
Since sensors may be used with the M7I, M5I or M3I indicators, the accuracy of the indicator being used
must be identified and taken into account, as follows:
Indicator Model
Accuracy
M7I / M5I
±0.1% of full scale
M3I
±0.2% of full scale
The total system accuracy can be calculated by adding the sensor accuracy and indicator accuracy.
Refer to the following examples:
Example 1
Model MR01-100 sensor with Model M5I Indicator
MR01-100
±0.15% of full scale
+
M5I
±0.1% of full scale
=
Total
±0.25% of full scale
This translates into a fixed error of up to:
0.25% x 100 lbF = 0.25 lbF
Example 2
Model MR50-50Z sensor with Model M3I Indicator
MR50-50Z
±0.35% of full scale
+
M3I
±0.2% of full scale
=
Total
±0.55% of full scale
This translates into a fixed error of up to:
0.55% x 50 ozFin = 0.275 ozFin
Because accuracy is defined as a
percentage of full scale
, the fixed error is possible anywhere on the
scale from 0 to the capacity. As such, this value represents an increasingly large error as
percentage of
reading
towards the low end of the scale. It is, therefore, recommended that a sensor is selected with
capacity as close as possible to the expected load.
The resolution may be different for some sensors depending on whether a M7I, M5I, or M3I indicator is
being used. For example, a Series R01 force sensor will display finer resolution when connected to a M5I
indicator than when connected to a M3I indicator. Resolution information is shown in the following
sections.
