Series 240
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General Purpose DC LVDTs 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 proportional to the displacement. KEY FEATURES Ranges from ±0.05” to ±4.0” Stainless Steel Construction WORKING RANGE, ± Inches (mm) MAX. USABLE RANGE, ± Inches (mm) NOMINAL F.S. OUTPUT, ±VDC with unloaded output @ 6 VOLT INPUT INPUT CURRENT 8.3 mA @ 6 Volt input to 52 mA @ 30 Volt input ±0.5% Full Scale Over Total Working Range ±1.0% Full Scale Over Maximum Usable Range INTERNAL CARRIER FREQUENCY, Hz OUTPUT IMPEDANCE, Ohms FREQ. RESPONSE (3 dB down), Hz TEMPERATURE RANGE

BLOCK DIAGRAM I Polarity of excitation must be observed for proper function. Reversal will 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 5. Blue lead is more positive with respect to the Green lead when the core is moved toward the lead end. DIMENSIONAL DIAGRAM 1 -72 UNF-2A x 0.375 Inch (9.5 mm) Long Thread 1-72 UNF-2B, .18 inch (4.6 mm) Min. Deep Thread Both Ends; Thru Thread When B < .6 inch (15.2 mm) Leads will exit axially, no less than All Dimensions in Inches (millimeters)...

CORE OPTIONS * 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. Note: All electrical and physical specifications are the same as the standard Series 240 LVDTs.

SALES OPTIONS Option # Splashproof - protects the unit from washdown environments or outdoor applications by means of an additional washer on the non-lead end. Applies to Models 0242-0000_ through 0246-0000_ Modify length of the extension rod to user specified length; specify as Dimension E Provide maximum non-linearity of ±0.25% full scale Cable termination; eight feet of 4 conductor, 22 AWG, PVC cable; temperature range changes to 0ºF to +175ºF (-17ºC to +79ºC) Provide an offset and scaled output voltage; special connector and mating connector included; used only with load impedances of 1...