Isometric Force Transducers, Models FT20 and FT50
The FT20 and FT50 force transducers are designed for measurement applications in tissue bath experiments where isometric muscle or tissue contraction are measured.The FT20 and FT50 force transducers are designed for measurement applications in tissue bath experiments where isometric muscle or tissue contraction are measured.. The FT20 has a maximal load of ± 20 cN (~20 g force) and the FT50 has a maximal load of ± 50 cN (~50 g force).
The FT20 and FT50 force transducers are designed for measurement applications in tissue bath experiments where isometric muscle or tissue contraction are measured. The FT20 has a maximal load of ± 20 cN (~20 g force) and the FT50 has a maximal load of ± 50 cN (~50 g force).
The installed sensor system is based on a resistance full bridge circuit, which can be directly connected to any HA-HSE bridge amplifier, e.g. the PLUGSYS TAM amplifier module. If using other DC bridge amplifiers, e.g. Grass or Gould, there are different connection cables available.
Key Features
- Isometric (low displacement of the measurement cell)
- Can be used in both directions, pull or push
- Two ranges available +/-20 g, and +/-50 g full scale (FS)
- Suitable for small muscle and tissue samples like papillary muscle, Purkinje fibers and vessel rings
- Resistance full bridge circuit (Wheatstone bridge) can be used with most commonly used DC bridge amplifiers
- Supply voltage range 5 to 10 VDC (max. 15 mA
- Removable connection cable with 6-pin binder connector for HA-HSE bridge amps or additionally available special cables for products from other manufacturers, e.g. Grass or Gould.
- Removable holder with two M5 fastening threads for horizontal or vertical rod mounting
- Compact design, two mechanical end stops as overload protection and additional front
Included Items
- Force transducer FT20 or FT50
- Removable holder with 8 mm mounting rod
- Standard connection cable
- Small spring attachment hook
- Test weight 1 cN (~1 g)
- Hexagon screwdriver 2.5 mm
- User’s manual
- Storage box
See the Specifications tab for additional details.
| Parameter | FT20 | FT50 |
| Maximal load | ± 20 cN (~20 g force) | ± 50 cN (~50 g force) |
| Natural frequency | 210 Hz | 300 Hz |
| Bridge resistance | Signal = 1.6 kOhm / Supply = 820 ohm |
Signal = 1.6 kOhm / Supply = 820 ohm |
| Supply voltage | +5 to 10 VDC <20 mA |
+5 to 10 VDC <20 mA |
| Displacement | 8 µm / 1 cN | 4 µm / 1 cN |
| Sensitivity | 250 µV / 1V / 1 cN | 58 µV / 1V / 1 cN |
| Shielding | Housing, holder and rod connected to shield | Housing, holder and rod connected to shield |
| Sensor moving mass | <1.1 cN (~1.12 g) | <1.1 cN (~1.12 g) |
| Operating temperature | 10°C to 50°C (50°F to 122°F) | 10°C to 50°C (50°F to 122°F) |
| Weight | 120 g (Sensor and holder without cable) | 120 g (Sensor and holder without cable) |
| Transducer dimensions (W x H x L) | 21 x 21 x 64 mm 0.83 x 0.83 x 2.52 in |
21 x 21 x 64 mm 0.83 x 0.83 x 2.52 in |
| Connecting socket | USB 2.0 A type socket / supply and signal (No USB interface) |
USB 2.0 A type socket / supply and signal (No USB interface) |
| Connection cable | Standard cable 6-pin Binder 2 m / 78 in Optional for ADI, Grass and Gould |
Standard cable 6-pin Binder 2 m / 78 in Optional for ADI, Grass and Gould |
| Rod length | 8 x 160 mm (0.315 x 6.3 in) | 8 x 160 mm (0.315 x 6.3 in) |
| Mounting holder for rod | Removable horizontal or vertical mount | Removable horizontal or vertical mount |
| Accessories | Standard connection cable, test weight and instruction | Standard connection cable, test weight and instruction |
