MRM Precision Instruments Inc.
Professional Force / Torque Indicator
Model 7i







 

The 7i professional digital force / torque indicator is designed to work with a wide range of Mark-10 remote force and torque sensors. With exclusive Plug & Test™ technology, all calibration and configuration data is saved within the sensor’s smart connector, not the indicator, allowing for true interchangeability. In addition, all sensors are fully compatible with other Mark-10 indicators.

The 7i features an industry-leading sampling rate of 14,000 Hz, producing reliable results for extremely quick-action tests. In addition to the 5i indicator's functions, the 7i features high speed continuous data capture and storage, with memory for up to 5,000 readings, at an acquisition rate of up to 14,000 Hz. The 7i also features programmable footswitch sequencing, break detection, and 1st / 2nd peak detection. Coefficient of friction unit of measurement and a user-defined unit of measurement add flexibility for specialized applications. For productivity enhancement, the indicator also features automatic data output, data storage, and zeroing functions upon the completion of break detection, averaging, external trigger, and 1st / 2nd peak detection.

The 7i interfaces with Mark-10 motorized test stands to permit functions such as break testing, dynamic load holding, PC control capability, and more. The included MESUR™ Lite data acquisition software tabulates continuous or single point data. Data saved in the indicator’s memory can also be downloaded in bulk. One-click export to Excel easily allows for further data manipulation.


Use MESURgauge Software to tabulate, graph, and analyze test data  

 

 
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  • Interchangeable force and torque sensors through Plug & Test™ technology (sensors are sold separately)
  • Sensor password protection, for preventing use of an unauthorized sensor
  • Password protection for individual keys and calibration
  • High-speed 14,000 Hz sampling rate
  • Continous data capture of up to 5,000 data points, at up to 14,000 Hz, downloadable to a PC
  • Individual data point memory for up to 5,000 readings, downloadable to a PC
  • USB, RS-232, Mitutoyo, and analog outputs
  • Sample break detection with auto functions, including stopping movement of a Mark-10 motorized test stand
  • Automatic output / data storage / zeroing upon various event completions
  • 1st / 2nd peak detection
  • 5 units of measurement, plus Coefficient of Friction and user-defined unit with configurable name
  • Programmable footswitch command string
  • Programmable set points, with indicators and outputs
  • Averaging mode - calculates average readings over time
  • External trigger mode - for switch contact testing or remotely stopping display update
  • Password protection, configurable for individual keys and calibration
 

The 7i indicator features several functions typically found in more complex instruments, such as materials testers, data acquisition systems, and PLCs. The following unique features are highlighted:

High Speed Data Capture & Storage

Series 7 can capture and store up to 5,000 continuous data points at a rate of up to 14,000 readings per second. This unique function is ideal for capturing switch activation forces, sharp breaks, and other short-duration applications. Configurable start and stop triggers are provided. The data acquisition rate is variable and can be slowed to also capture longer events, such as structure relaxation, material expansion, and others. Data from the storage buffer can be exported to data collection software such as MESUR™gauge for further analysis and graphing. Using a Series 7 gauge could replace cumbersome and expensive data acquisition hardware and software.


 

Footswitch Command String

Integrate your footswitch / automation system with a Series 7 gauge to improve testing ergonomics and efficiency; no need for multiple key presses. Up to three steps may be programmed for a single footswitch activation. Select from several commands, including request peak reading, zero the display, save to memory, and others. Time delays can be inserted between each step.


 

Automatic Data Output / Save / Zero / I/O Pin Toggle

Upon completion of several event types, the Series 7 can perform the following productivity-enhancing functions:

  • Automatically save the peak reading to memory.
  • Transmit the peak reading via USB, RS-232, or Mitutoyo output.
  • Zero the display. Toggle an I/O pin, for example to stop movement of an ESM301/ESM301L test stand.

Applicable events include:

  • Sample break detection (also applicable to samples which slip, click, or otherwise reach a peak, then fall).
  • Completion of an averaging sequence.
  • External trigger (ex. switch activation).
  • 1st / 2nd peak capture (ex. tensile testing).

 

User-defined Unit of Measurement

Series 7 gauges display 6 standard units of measurement. One additional user-defined unit is provided for unique applications. A base unit is specified, along with a multiplier, and 5-character name. Typical applications:

  • To measure the torque produced by pressing on a lever in a mechanical assembly, configure the multiplier based on the length of the lever, thereby converting a unit such as N into Ncm.
  • To measure the pressure produced by a circular compression plate on a foam sample, configure the multiplier based on the area of the plate, thereby converting a unit such as lbF into psi.


Accuracy: ±0.1% of full scale
Sampling rate: 14,000 Hz
Power: AC or rechargeable battery. Multi-step low battery indicator is displayed, gauge shuts off automatically when power is too low.
Battery Life: Backlight on: up to 7 hours of continuous use
Backlight off: up to 24 hours of continuous use
Outputs: USB / RS-232: Configurable up to 115,200 baud. Automatic output available up to 250 Hz. Includes Gauge Control Language 2 for full computer control.
Mitutoyo (Digimatic): Serial BCD suitable for all Mitutoyo SPC-compatible devices.
Analog: ±1 VDC, ±0.25% of full scale at capacity,
General purpose: Three open drain outputs, one input.
Set points: Three open drain lines.
Safe overload: 150% of full scale (display shows “OVER” at 110% and above)
Weight: 0.7 lb (0.3 kg)
Included items: Carrying case with chisel, cone, V-groove, hook, flat, extension rod, universal voltage AC adapter, battery, quick-start guide, USB cable, resource CD (USB driver, MESUR™ Lite software, MESUR™gauge DEMO software, and user’s guide), and NIST-traceable certificate of calibration with data.
Environmental requirements: 40 - 100°F, max. 96% humidity, non-condensating
Warranty: 3 years (see individual statement for further details)

                   
 
R01
S-beam force sensors, tension and compression
  R02
Miniature button force sensors, compression only
  R03
Inline force sensors, tension and compression
  R04
Miniature S-beam force sensors, tension and compression
  R05
Fully enclosed force sensor, push and pull
 
                   

                   
 
R50
Universal torque sensors
  R51
Universal torque sensors with interchangeable attachments
  R52
Tool calibration torque sensors
  R53
Closure torque sensors
  R55
Fully enclosed smart sensors, push and pull
 
                   
 

 
 

 
 

Table Top Stand
Includes mounting holes for bench mounting and angle adjustment.
MESUR™ Gauge Software -
tabulates and plots load vs. time or load vs. travel. Also calculates statistics, exports to Excel, and more.
Upgrade to Plug & Test™
Upgrade service replaces BGI style connector with 7i/5i/3i Plug & Test™ connector.
Output Cables
Send test data to a PC, statistical printer, or other data collector for further analysis.
   

Model Description
M7I Force/torque indicator, 110V
M7IE Force/torque indicator, 220V European Plug
M7IU Force/torque indicator, 220V UK Plug
M7IA Force/torque indicator, 220V Australian Plug
 
Additional Items to Consider
15-1004 MESUR™gauge software
09-1163 Cable, Series 5 to RS-232
09-1165 Spare USB cable
08-1026 Spare rechargeable battery
AC1030 Spare AC adapter, 110V
AC1031 Spare AC adapter, 220V EUR
AC1032 Spare AC adapter, 220V UK
AC1035 Spare AC adapter, 220V AUS
AC1008 Stand, table top
SVC014 Upgrade service, BGI style connector to Plug & Test™ connector,
with NIST certificate of calibration with data.

 
 



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