There is a new version of this product available. Check out the 315D/322D High-Speed Length Controllers!

315C/322C: High-Speed Length Controllers

The 315C/322C High-Speed Length Controller gives physiologists the ability to control and measure length of single cells, fibers and whole muscle with ease. Highly sensitive motors allow complete automated control of length measurements of a vast number of biological specimens such as skeletal, cardiac and smooth muscle, connective tissue, and compliant tissue.

These motors provide a range of length control and response times uniquely suited to the needs of the researcher. Our fastest model, the 315C, provides a step change of length in 200µs and a length frequency response up to 2.4 kHz. All models allow the researcher to resolve lengths as small as 1 micron. Integrator models (315C-I and 322C-I) have less than 0.01 micron/mN isometric compliance. With tensile limits of 300mN and 200mN, respectively, our high-speed length controllers have more than enough force for any tissue sample.

The front panel manual length control allows the researcher to set the steady-state arm position. In addition, circuit design prevents the motor from being operated beyond its safe limits.

  • test all muscle types (skeletal, cardiac and smooth) as well as connective tissue
  • fast and accurate
  • step response time from 200µs to 800µs
  • length resolution: 1µm
  • optimal tensile limit (315C – 50 mN, 322C – 100 mN)
  • length response to 2.4kHz
  • automated control and digital display

  • <0.01µm isometric compliance
  • steady-state arm positioning
  • includes safety precautions designed to prevent unsafe motor operation

Models

315C: 50mN Force, Ultra low isometric compliance

315C-I: 50mN Force, Ultra low isometric compliance, with Integrator

322C: 100mN Force, Ultra low isometric compliance

322C-I: 100mN Force, Ultra low isometric compliance, with Integrator

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Resources

Specifications

Length Specifications 315C 315C-I 322C 322C-I
Lever Arm Length [mm] 9 9 20 20
Length Excursion [mm] 3 3 6 6
Length Resolution [um] 0.5 0.5 0.5 0.5
Length Scale Factor1 [mm/Volt ±2%] 0.15 0.15 0.3 0.3
Length Signal Linearity2 [%] 99.5 99.5 99.9 99.9
Length Step Response Time3 [millisecond] 0.25 0.5 0.4 0.8
Sinusoidal Frequency Response4 [Hz] 2,400 1,600 1,500 900

1 = Gain switch set to 1X; 2 = Over full length excursion; 3 = 1 to 99%, critically damped; 4 = -3dB point

Force Specifications 315C 315C-I 322C 322C-I
Maximum Force [mN] 300 300 200 200
General Specifications 315C 315C-I 322C 322C-I
Power Required 100, 120, 220, 240 VAC, 50/60 Hz. Available
Power Consumption [W] 60 60 60 60
Controller Weight [kg] 2.7 2.7 2.7 2.7
Motor Weight [g] 27 27 43 43
Controller Dimensions [cm] 21W (1/2 rack mount) x 25D x 9H (2U)
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