Checkline Series-3I - Manual (Page 3)

Model 3i Digital Force/Torque Indicator User’s Guide
2
1 OVERVIEW
1.1 List of included items
Qty. Part No. Description
1 12-1049 Carrying Case
1 08-1022 AC adapter body with US, EU, or UK prong
1 08-1026 Battery (inside the indicator)
1 - Certificate of calibration
1 09-1165 USB cable
1 - Resource CD (USB driver, user’s guides, MESUR
TM
Lite
software, MESUR
TM
gauge DEMO software, User’s Guide)
1.2 General Overview
The 3i is a universal indicator designed for displaying
measurements from interchangeable Mark-10 Plug &
Test
TM
sensors. Sensor capacities are available 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
TM
sensors are used with either the 3i or 5i
indicator. 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.
The model number, serial number, and capacity of the
sensor are identified in the rectangular label located on the
Plug & Test
TM
connector. The model and serial numbers
are also identified in the Information screen of the indicator.
1.3 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 either the 5i or 3i indicator, the accuracy of the indicator being used
must be identified and taken into account, as follows:
Indicator Model Accuracy
5i ±0.1% of full scale ±1 digit
3i ±0.2% of full scale ±1 digit
The addition of “±1 digit” refers to the least significant digit shown on the indicator display. This is
equivalent to one increment of resolution. The resolution may be different for some sensors depending on
whether a 5i or 3i indicator is being used. For example, a Series R01 force sensor will display finer
resolution when connected to a 5i indicator than when connected to a 3i indicator. Resolution information
is shown in the sensors’ user’s guides.
The total system accuracy can be calculated by adding the sensor accuracy, indicator accuracy, and one
count of resolution. Refer to the following examples:
From left to right: Model 3i indicator with Series R03
force sensor, and Model 5i indicator with Series R50
torque sensor