Interface Torque | Single & Multi-axis force sensors (load cells), Pressure Sensor & Pressure Transmitters, Sensor Instrumentation, Custom Designs and Dynamic Pressure Mapping

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Frequently Asked Questions

Here you can find a range of technical help to many of the products shown on this website as well as general information about anything relating to what we do.

What is the difference between the Interface Gold Standard Calibration software packages?

Interface offers three primary Gold Standard software packages for the calibration of load cells or test machines.

  1. Force Comparison ICS-202
  2. Machine Calibration ICS-205
  3. Dead-weight ICS-DW

All the software packages store calibration data for reference load cells, stepped load routines, 'limits' on performance criteria (where relevant) to help dramatically speed up the calibration process especially where repetitive routines are employed also at the same time helping to maintain accuracy and reduce errors.

System no.1 - Force Comparison (ICS-202)

This system requires dual channel data acquisition using either the Gold Standard PC Boards HRBSC/SCBxx or the dual channel 9840 model 9840-2xx-x. While both systems give you all the acquisition, display, manipulation, analysis and reporting functions the Gold Standard hardware has the additional option of adding a control board that provides total automation of the loading process. Regardless of how the applied force is controlled the software relies on measurements taken at stepped loading intervals, with those from a Calibration/Reference unit being compared to the Unit Under Test and then immediately performance figures are calculated and the error graph is plotted with comprehensive calculations of any parameter being available through the extremely flexible 'Crystal' report software. In-built formats are provided for a basis of ASTM-E74 and ISO-376 calibration reports. A concise operating manual will soon be available on this link.

System no. 2 - Machine Calibration (ICS-205)

While this system can be run using the dual channel hardware required by the above package it can also be operated using a single channel system more suited to the Field Calibration Engineer. This software takes the measurements from a Calibration/Reference load cell installed in the test machine and now compares the dispalyed reading of the test machine against the reference values at each stepped load interval and calculates the test machine errors at each step with tabulated results and graphical plots being offered plus immediate results can be made available in draft prior to confirmation and a signed copy. In-built formats are offered for ASTM-E4 and ISO-7500/1 calibrations. A concise operating manual will soon be available on this link.

System no.3 - Dead-weight (ICS-DW)

As above this package can be run with the dual channel hardware but only requires a single channel to measure the Unit Under Test while it is being loaded with known value reference dead-weights. Dead-weights are recognised as the most accurate way of applying known loads and the Gold Standard software will work with any number of weight-stacks to make the task of data collection a simple task of selecting the correct library files and clicking 'Start'.  A concise operating manual will soon be available on this link.

A separate note will provide comparison details for the Gold Standard Hardware.

Although reference here has been made as 'Force Calibration' the software packages can also be used for Pressure or Torque calibrations with sensors that have strain-gauged bridge outputs or high level signals of 4-20mA or +/-10V



FAQ last updated on 18 Jul 2011.

What are the Interface load cell wiring colours?

Interface USA Colors


Red +Excitation
Green +Signal (Tension upscale)
White -Signal
Black -Excitation


White/Red +Sense
Red +Excitation
Green +Signal (Tension upscale)
White -Signal
Black -Excitation
White/Black -Sense


Interface UK Colours


Yellow +Sense
Red +Excitation
Green +Signal (Tension upscale)
White -Signal
Black -Excitation
Blue -Sense


European Colours

Brown +Excitation
Yellow +Signal (Tension upscale)
White -Signal
Green 0V/Gnd
Grey Control (typically 100%)
Braid Shield



FAQ last updated on 11 Dec 2017.

How do I wire a 9840 load cell indicator connector?

Interface offers a wide selection of indicators to cover many applications and here is the basic connection details for the 9840 which is one of the most popular units for calibration grade applications.

9840 Intelligent load cell indicator - 9-way D-type load cell connector

  1. Excitation - High/Positive
  2. Sense - High/Positive
  3. Cell Output/Signal - High/Positive
  4. CellOutput/Signal - Low/Negative
  5. Sense - Low/Negative
  6. Excitation - Low/Negative
  7. Auto ID - A
  8. Auto ID - B
  9. Chassis Ground

Please contact us directly for details of the wiring for the other connectors.

Search with "What are the Interface load cell wiring colours?" for details of the most popular wiring/cable colour conventions.

FAQ last updated on 19 Jul 2011.

How do I wire the standard Interface PCCx indicator enclosure connector?

The Interface DFI05L digital load cell indicator is optionally offered with the PCCx enclosure which provides a rugged casing for protection of indicator(s) and connecting wiring espcially the mains voltage power supply leads. The rear panel provides an IEC style switched connector input and the load cell connection is via a standard D-type 15-way female connector (Male mating connector required for fitment to sensor). The wiring is as follows.

  1. Positive Excitation
  2. Positive Signal
  3. Negative Signal
  4. Negative Excitation
  5. No connection
  6. No connection
  7. Logic input - Common #07
  8. Logic input - CC.1 #08 {Tare}
  9. Positive Excitation
  10. Positive Sense
  11. Negative Sense
  12. Negative Excitation
  13. No connection
  14. Logic input - CC.2 #10 {Reset}
  15. Logic input - CC.3 #09 {Peak/Valley}

NOTE.1: The DFI05L requires 6-way sense wiring so links should be fitted between pins 9-10 & 11-12 when wiring for 4-way.

NOTE.2: To enable the front panel buttons for TARE, RESET and PEAK/VALLEY a link should be fitted between Common (pin 7) and pins 9, 15 & 14 respectively.

This information is designed to cover both the Mk1 and Mk2 style devices.



FAQ last updated on 10 Jan 2012.

Which Interface mating connector do I need? #1

This chart details the mating connectors for the most common Interface force & torque sensor products.

Mating Connector MFG Number Mates with Application/Notes
Interface Mating Connectors
MC-001 PC06A-10-6S PC04E-10-6P 1000, 1100, 1200 Series
MC-002 PT06A-12-8S PT02E-12-8P Gold Standard Load Cells & Simulators
CN-203 PC04E-10-6P PC06A-10-6S Load Cell look-alike on cable end
CN-204 PC04E-10-6P(SR) PC06A-10-6S Load Cell look-alike on cable end
CN-206 PC06A-10-6S(SR) PC04E-10-6P Load Cells with Screw Connector
CN-207 PT06A-10-6S(SR) PT02E-10-6P Load Cells with Bayonet Connector
CN-208 MS3106A-14S-6S MS3102X-14S-6P UMC600 Indicator
CN-209 PC02E-10-6P PC06A-10-6S Box Mount looks like Load Cell screw type
CN-210 PT01A-12-8P(SR) PT06A-12-8S(SR) Gold Cell look-alike on cable end
CN-212 DE-9P DSUBMIN DE-9S 9840 Indicator Load Cell Input
CN-213 PT02A-10-6P(SR) PT06A-10-6S(SR) Load Cell Bayonet look-alike on cable end
CN-224 BINDER N/A 7-Pin Options conn. for RD6
CN-225 BINDER N/A 12-Pin for RD6, RD3, T2, T3, T4, T5, T6, T7 & T12 (>19Nm)
CN-226 BINDER N/A 6-Pin for TS11 & TS12 (>19Nm)


FAQ last updated on 12 Jun 2014.

What are the different force calibrations available?

We have a separate site that deals specifically with the different force calibrations, governing bodies and accreditations. To view click here or on the following image.
Click here to go to Force Calibration Guide

Alternatively call us and we will be happy to discuss your aims, look at all the options and costs so we can suggest the most suitable calibration to match your requirement.

FAQ last updated on 09 Oct 2013.

How to enable Peak/Valley on a DFI-05L load cell indicator

This is applicable to the standard DFI-05L MK2
(may vary if the MEM-08 option is installed.)
Assuming that the default conditions apply to the Logic Inputs it is necessary to link connection 7 to 9 (Common - CC.2) & 10 (Common - CC.3) to enable Peak/Valley (Max/Min) and Reset respectively.

With the Calibration Lock Switch is in the locked position the unit will operate as follows.
Press once -
Displays PEAK (MAX)
Press twice -
Displays VALLEY (MIN)

Returns to normal after
a short period
or Press a third time
Press for 3 seconds -
RESETS values of Peak & Valley
Press 3 seconds

FAQ last updated on 01 Oct 2013.

What is the definition of STATIC ERROR BAND or SEB?

The STATIC ERROR BAND or SEB is the band of maximum deviations of the ascending and descending calibration points from a best-fit line through zero OUTPUT. It includes trhe effects of NON-LINEARITY, HYSTERESIS and non-return to MINIMUM LOAD. Normally expressed in units of %FS (% FULL-SCALE)


FAQ last updated on 06 Mar 2014.

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