Appendix a: l-cell specifications – Kistler-Morse KM L-Cell Bolt-On User Manual
Page 69
Appendix A. L-Cell Specifications
A-1
Appendix A: L-Cell Specifications
Mechanical
Stress Level
Carbon Steel —
Maximum
±15,000 psi (10.5 kg/mm
2
)
Recommended*
5,000 ± 3,500 psi (3.5 ± 2.5 kg/mm
2
)
Aluminum —
Maximum
±6,500 psi (4.6 kg/mm
2
)
Recommended*
3,000 ± 1,500 psi (2.1 ± 1.1 kg/mm
2
)
Fatigue Life
Carbon Steel —
> 20 million cycles; load and unload at 0 to 7,500 psi
(0 to 5.3 kg/mm
2
)
Aluminum —
> 20 million cycles; load and unload at 0 to 3,250 psi
(0 to 2.2 kg/mm
2
)
*Consult factory for application assistance for stress levels outside the recommended range.
Electrical
Excitation Voltage
Standard 12 Vdc, ±5%
Excitation Current at 12Vdc
11.8 mA at 0° F (-18° C) to 8.4 mA at 100° F (+38° C)
Insulation Resistance
2M ohms
Strain Gage to Sensor Frame
Breakdown Voltage
>250 Vdc
Red-to-White Resistance
4.0K ohms, ± 200 ohms at 77° F (25° C)
Black-to-White Resistance
4.0K ohms, ± 200 ohms at 77° F (25° C)
Output (for 12Vdc excitation)
Sensitivity
Carbon Steel
35 mV ± 1%/1,000 psi (35 mV ± 1%/0.7 kg/mm
2
)
Aluminum
80 mV ± 1%/1,000 psi (80 mV ± 1%/0.7 kg/mm
2
)
Zero-Strain Output
0 mV ± 100 mV
Nonlinearity & Hysteresis
±0.2% of full-scale output
Repeatability
0.1% of full-scale output
Output Impedance
3.75K ohms, ± 1%
Full Scale
~298 mV @ 8,500 psi (carbon steel)
~360 mV @ 4,500 psi (aluminum)
Environmental
Rating
Designed for rugged, outdoor applications
Temperature Range
Operational
-30° to +140° F (-34° to +60° C)
Storage
-30° to +140° F (-34° to +60° C)
Temperature Effects
Sensitivity Change
0.02%/°F (0.036%/°C)
Zero Shift
±2 mV/100° F (±2 mV/56° C)
between 0° and 100° F (between -18° and 38° C)
Physical
Weight
1.4 oz (40 gm)
Cable
3-conductor, 22 gage, unshielded
Sensor Frame
17-4 PH stainless steel
Cable Length
15 ft (4.6 m)