Oscillator/ Demodulator INTERCONNECTION DIAGRAM The Series 1000 Oscillator/Demodulators provide complete electrical support for AC LVDTs. Working from an unregulated DC input, the modules generate a stable sinusoidal excitation voltage for the transducer. The LVDT’s secondary voltages are converted into DC voltage by the module’s phase sensitive demodulator. The demodulator has automatic phase synchronization which simplifies installation and setup by eliminating the need to make phase angle adjustments for each transducer. An active, three-pole filter in the final stage reduces output ripple while maximizing frequency response. Other features include zero and span controls, full encapsulation, threaded inserts for mounting, and self locking terminal strips. DIMENSIONAL DIAGRAM KEY FEATURES • Works with 5 and 6 wire LVDTs • DC Voltage or 4-20 mA Output • Internally Regulated • High Frequency Response NOTE: 1. 4 wire LVDT connection requires access to the center connection of both secondaries. One wire from each of the secondaries and the primary will be tied together and attached to COMMON. The remaining three leads will be connected as shown in the connection diagram. ELECTRICAL SPECIFICATIONS INPUT POWER OSCILLATOR OUTPUT TO LVDT Current Voltage Current SIGNAL OUTPUT - VOLTAGE ±14.5 to ±28 VDC, Input polarity protected NOTE: DUAL DC OUTPUT POWER SUPPLY REQUIRED ±150 mA Max. plus LVDT current 4.25 to 5.75 VRMS adjustable via 15 turn span control Will drive LVDTs with primary impedance of 100 Ohms or greater. Short circuit and thermally protected DC output is 2 times the RMS output of the LVDT. Output voltage is limited to ±12 VDC. VOLTAGE AND 4-20 MA OUTPUT VERSIONS The equivalent models for voltage and 4-20 mA output are shown in the table below, along with frequency, phase angle and frequency response for each. All of these modules are physically Less than 5 Ohms SIGNAL OUTPUT - CURRENT 4-20 mA output with LVDT whose sensitivity is 0.5 V/V (±10%). Min. Full Scale Output current: 2-22 mA Load Impedance > 1x1010 Ohms; Operation into loop impedance between 5 and 400 Ohms. Non-linearity Temp. Coef. Operating Storage ±0.05% Max. over ±10 VDC output < ±0.00025V/° F Zero, < ±0.01% output/° F Span +32° F to +158° F (0° C to +70° C) -67° F to +257° F (-55° C to +125° C) ±0.40 Min. VDC via 15 turn zero control Friction terminals with self locking screws, accepts up to #16 AWG wire. identical and require the same dual bipolar voltage supply. The output pins 5 and 1 are used for the current output. ACCURACY TEMPERATURE RANGE ZERO ADJUSTMENT TERMINAL CONNECTIONS LVDT PHASE ANGLE ALL > 10 Degrees < 10 Degrees Note: Current Loop impedance must be between 5 and 400 Ohms for linear operation. BLOCK DIAGRAM SALES OPTIONS Option # X0003: X0005: Description Provide special zero offset and/or sensitivity Provide special cutoff frequency

Oscillator/ Demodulator INTERCONNECTION DIAGRAM The Series 1000 Oscillator/Demodulators provide complete electrical support for AC LVDTs. Working from an unregulated DC input, the modules generate a stable sinusoidal excitation voltage for the transducer. The LVDT’s secondary voltages are converted into DC voltage by the module’s phase sensitive demodulator. The demodulator has automatic phase synchronization which simplifies installation and setup by eliminating the need to make phase angle adjustments for each transducer. An active, three-pole filter in the final stage reduces output ripple...