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240

简介:

特点与用途/Features & Applications

The Series 240 DC-DC LVDTs are an integrated package consisting of a precision linear variable differential transformer, a solid state oscillator, and a phase-sensitive demodulator. The transducer is designed for excellent linearity, infinite resolution, and high sensitivity. Input and output circuits are electrically isolated from each other and from the coil assembly housing, making them usable directly in floating or ground return systems. DC indicators, recorders, and control systems can usually be driven directly by the large DC output. The core, when displaced axially within the coil assembly, produces a voltage change in the output directly

详情
  • Ranges from ±0.05” to ±4.0”                               KEY FEATURE

  • 6 to 30 VDC Excitation

  • Non-linearity < 0.5%

  • Stainless Steel Construction

SPECIFICATIONS - ELECTRICAL

MODEL NUMBER 0240-0000 0241-0000 0242-0000 0243-0000 0244-0000 0245-0000 0246-0000 0246-00005
WORKING RANGE, ± Inches (mm) 0.050 (1.27) 0.100 (2.54) 0.250 (6.35) 0.500 (12.7) 1.00 (25.4) 2.00 (50.8) 3.00 (76.2) 3.00 (76.2)
MAX. USABLE RANGE, ± Inches (mm) 0.075 (1.78) 0.150 (3.75) 0.375 (9.53) 0.750 (19.1) 1.50 (38.1) 2.75 (69.8) 3.25 (82.5) 4.00 (101)
INPUT, VDC 6.0 Min. to 30 Max. 9.0 Min. to 30 Max.
NOMINAL F.S. OUTPUT, ±VDC with unloaded output
@ 6 VOLT INPUT 1.3 2.4 1.8 3.1 4.6 3.9 3.3 N/A
@ 15 VOLT INPUT 3.4 6.4 4.8 8.3 12.1 10.2 8.7 10
@ 24 VOLT INPUT 5.5 10.4 7.8 13.5 18.7 16.5 14.1 16.3
@ 30 VOLT INPUT 7.0 13.0 9.7 17.0 24.8 20.7 17.7 30.5
INPUT CURRENT 8.3 mA @ 6 Volt input to 52 mA @ 30 Volt input
2 NON-LINEARITY ±0.5% Full Scale Over Total Working Range, ±1.0% Full Scale Over Maximum Usable Range
INTERNAL CARRIER FREQUENCY, Hz 13000 12000 3600 3400 3200 1500 1400 1400
 % RIPPLE, RMS (nominal) 0.7 0.7 0.8 0.8 0.8 1 1 1
 OUTPUT IMPEDANCE, Ohms 2500 3500 5200 5500 5600 5500 5600 5600
 FREQ. RESPONSE (3 dB down), Hz 300 140 115 110 100 110 75 75
TEMPERATURE RANGE -65°F to +250°F (-54°C to +121°C)
RESOLUTION Infinite

NOTES:

  1. Polarity of excitation must be observed for proper function. Reversal will not damage the unit.

  2. Load Impedance of 50 KOhms minimum required for proper operation.

  3. Output polarity will be positive on one side of null, negative on the other side of null.

  4. Transducers are calibrated at 24 VDC.

  5. Blue lead is more positive with respect to the Green lead when the core is moved toward the lead end.

trans-2016-240-block-diagram

DIMENSIONAL DIAGRAM

 

trans-2016-240-dimensional-diagram

SPECIFICATIONS - MECHANICAL

MODEL* LINEAR RANGE BODY LENGTH, A ELECTRICAL CENTER, Ec BODY MASS CORE LENGTH, B EXTENSION LENGTH, E

±Inches (mm) Inches (mm) Inches (mm) Grams Inches (mm) Inches (mm)
0240-0000__  0.05 (1.27)  0.87 (22.1)  0.34 (8.64) 55.8  0.56 (14.2)  1.9 (48.3)
0241-0000__ 0.10 (2.54) 1.12 (28.5) 0.46 (11.7) 59.2 0.75 (19.1) 1.9 (48.3)
0242-0000__ 0.25 (6.35) 3.21 (81.5) 1.44 (36.6) 121.4 1.75 (44.5) 1.9 (48.3)
0243-0000__ 0.50 (12.7) 3.71 (94.2) 1.69 (42.9) 132.2 1.87 (47.5) 2.4 (60.9)
0244-0000__ 1.00 (25.4) 4.71 (120) 2.19 (55.6) 156.2 2.00 (50.8) 3.2 (81.2)
0245-0000__ 2.00 (50.8) 8.21 (209) 3.94 (100) 235.4 3.50 (88.9) 5.2 (132)
0246-0000__ 3.00 (76.2) 10.52 (267) 5.09 (129) 293 3.50 (88.9) 8.4 (213)
0246-00005 4.00 (101.6) 10.52 (267) 5.09 (129) 293 2.00 (50.8) 9.1 (231)

* Model numbers ending with a “_” have multiple core options. All standard units will end with a 0  indicating a core assembly. This core assembly consists of a core brazed to an extension rod that terminates in 1-72 UNF-2A threads. If an option is not selected, option 0 will be provided.


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