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DynaTension Tension Meter

 DynaTension - These patented, multi-purpose tension meters are reliable and maintenance free.
For Crane Loads, Anchor Mooring Systems, Cables, Wire Ropes, Bridge Cables, Dam Gate Cables, Wire, Chains, etc. 

Portable - Model P1000 - Tension Meter
Direct Tension Readings From
Fractional Pounds To Ten Million Pounds
Non-Contact & Contact Use
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P1000 Riggers Kit

This versatile multi-purpose instrument can be used on a variety of materials and there is no loss of calibration with use.

 

P1000 Riggers Kit Includes both the non-contact and contact sensor options. Comes complete with soft-side carrying case, shoulder strap and battery charger.

CURRENT APPLICATIONS
FOR DYNATENSION TECHNOLOGY

  • CRANE LOADS
  • VESSEL TOW CABLE
  • TOWER GUYS
  • BRIDGE CABLES
  • CONSTRUCTION BEAMS
  • ELEVATOR CABLES
  • FABRIC ROOF SUPPORT CABLES
  • DAM GATE CABLES
  • MOORING CABLES
  • GEOPHYSICAL ARMORED CABLE
  • ANCHOR LAYING
  • IN SITU PRESTRESSED STRAND
  • PRESTRESSED STRAND
  • THEATER PROP CABLES
  • OPTOMECHANICAL CABLE MFG.
  • LARGE DRIVE BELTS
  • THEATER PROP CABLES
  • ANCHOR LINE TENSION MONITORING

HOW THE METER WORKS: The DynaTension Technology senses the fundamental frequency of vibration of a cable or other materials under load. A sensor automatically converts this frequency to an analog voltage. The computed tension is then displayed on a high contrast LCD display. With one keypad entry you can also program to read only the vibration frequency. The basic Model P1000 meter is fully portable, weighs only 5 pounds and does not require in-line installation.

 

 

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 Standard Sensor Options For Use With The Basic Model P1000

 

Vari-l Sensor Acsens 103A 

VARI-L #101 - Requires no physical contact; works only with metallic materials, best suited for harsh environments; works on rods or cables and on other large tension members such as chain.  

ACSENS # 103A-Attaches to member under tension; member may be any material. This sensor is well suited for harsh environments. Best suited for shorter or narrower spans and higher range tension applications in materials larger than 1/4" in diameter.

 

SIMPLE TO USE - In four short steps you can take accurate tension measurements.

First, you will enter the weight per foot of your material through the keypad. Second, you enter the length (in inches) between two fixed points that your material contacts. Third, attach the ACSENS sensor or hold the VAR-L sensor nominally 1/4' from you material. Fourth, strum or tap your material under tension to set it vibrating. In just seconds the reading will stabilize and indicate tension accurately from less than 1% to more than 100% of your materials break strength.

This instrument is virtually maintenance free. The inexpensive 6-volt sealed lead-acid battery should be changed annually to ensure proper function. There is no loss of calibration with use so calibration services are not required. The internal firmware includes a self-check to verify the accuracy and functionality by means of user keypad entries. Weather, dirt, shock, overload or cable lubricants do not effect the P1000.

   

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CRANE LOAD TENSION MEASUREMENT - Model M2000
DynaTension M2000 is different! This unique technology magnetically vibrates the cables, then measures their natural frequency while rejecting extraneous mechanical vibration. It computes tension in the hoist line by applying the "vibrating string equation" which defines the physical relationship between the natural frequency, and the tension in flexible members. Other methods of measuring load or tension depend on sensors that respond to mechanical changes in something connected to the load carrying member rather than changes in the load carrying member itself. Hysteresis and drift result from lack of repeatability in the relationship between what is being measured and what is really happening in the tension member. DynaTension does not depend on a mechanical interface, but uses a non-contact sensor which faithfully reproduces the frequency of the cable vibrations without measurable error. This system offers a very cost effective solution to more safely and accurately measuring tension in crane hoist lines. These systems are warranted to be free of defects in materials and workmanship for a full two years. Call or E-Mail for more information about the Crane Load Monitoring Systems offered by Tension Measurement, inc.

Not Effected by Electromagnetic Interference - Accurate Whether Loads Are Large or Small

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DynaTension M2000

            Proven in demanding application on aircraft carriers since 1982

            Now in use on land based cranes and offshore drilling platforms

            Offers unprecedented accuracy, ease of use and maintainability

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MOORING TENSION MONITORING SYSTEM - MODEL ALM 400
DynaTension MTMS
systems monitor tension in mooring cables or chains without physical contact with the line. No contact ensures maintenance free operation of an inherently accurate load measuring system. No other method provides the cost effectiveness, dependability and accuracy of DynaTension MTMS.

 
  • No In-line Installation
  • Zero Wear, Zero Drift
  • Simple Calibration
  • Immune to EMI
  • Not Damaged by Overloads
  • Field Proven Reliability
  • Senses Cable or Chain Vibration
  • Both Analog and Digital Readouts
  • Overload Alarm
  • Local and Remote Readouts
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  • Tension Range: 5%SWL to 400% SWl
  • Accuracy: 2% of Readout
  • Input Power Options: 115Vac - 50/60hz:                                             220 Vac - 50/60hz
  • Power Required: Cable - 160 Watts/line at 1500 KIPS; Chain - 175 Watts/Line at 1500 KIPS
  • Output Options: 0-10 VDC; 4-20 MA;                                  RS-232; RS-422

DynaTension alone provides the long term reliability and dependability long needed in the offshore drilling and production industry.

DynaTension infers line tension from the frequency of vibration of a portion, or span, of the line. An electromagnetic exciter initiates and maintains vibration of each span. A variable inductance sensor produces an electrical analog of the vibration. Electronic circuitry in the control cabinet analyzes the signal, then computes and displays the corresponding line tension in real time.

The exciter and sensor are encapsulated in water impregnable, flame retarding epoxy. Because there is no physical contact with the cable or chain, there is no wear on the exciter/sensor. The sensor's signal output is volts in amplitude and because DynaTension measures frequency rather than amplitude it is immune to electromagnetic interference. DynaTension works with all or partially submerged spans by applying a correction factor based on percent of span immersion.

                                                                Manufactured in The USA

Signal Conditioners

Load Cells & Strain Gaged Transducers

Extensometers & Displacement Gages

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Tension Measurement, inc P.O. Box 740755 Arvada, Colorado, U.S.A. 80006
TEL. (303) 465-1011 FAX (303) 466-9761
Toll Free TEL. From USA: 800-470-3322
E-MAIL: tension@tension-measurement.com

1998 Tension Measurement, inc.