Excellence in Linear and Angular Displacement
and Linear Velocity Transducers

Series ED

Oscillator/Demodulator

  • Works with 5 and 6 wire LVDTs
  • Internally Regulated
  • DC Voltage Output
  • Small Size and Low Cost

The Series ED Oscillator/Demodulator is designed to simplify installation for 35mm DIN Rail and Panel Mount applications. It provides DC-in/DC-out operation for AC LVDTs and is internally regulated for additional stability of the output signal. Optimized for 3 kHz or 7kHz performance. A variety of voltage outputs are available as well as 4-20 mA; all with zero offset and span adjustment.

Specifications

-(3#KHz Oscillator @ 5.0 +/- .75, Any Output Phase Angle *)(7KHz Oscillator @ 5.0 +/- .75 VRMS Output Phase >10 Degrees) *(7KHz Oscillator @ 5.0 +/- .75 VRMS Output Phase <10 Degrees) *
MODEL #ED110-03-55SED110-03-11SED110-03-P1SED110-03-N1SED110-03-42SED210-07-55SED210-07-11SED210-07-P1SED210-07-N1SED210-07-42SED310-07-55SED310-07-11SED310-07-P1SED310-07-N1SED310-07-42S
INPUT VOLTAGE V DC22 TO 30 VDC
INPUT CURRENT ma100 mA + XDCR
Non Linearity %0.05%
OUTPUT Z Ohms Nominal5 Ω>1G Ω5 Ω>1G Ω5 Ω>1G Ω
OUTPUT I +/- ma 3N/A3 N/A3  N/A
FREQ RESPONSE -3 dB500 Hz1000 Hz
TEMP. OPER. DEG.+32ºF to +158ºF (0ºC TO 70ºC)
TEMP. STORAGE DEG. F-67ºF to +257ºF (-55ºC TO 125ºC)
WIRE TERMINATIONUP TO 14 AWG.
ZERO OFFSET ADJ. MIN.± .04 VDC1.2 mA± .04 VDC1.2 mA± .04 VDC1.2 mA
OUTPUT RIPPLE MAX..015 V RMS.024 mA RMS.015 V RMS.024 mA RMS.015 V RMS.024 mA RMS
OUTPUT DC ** NOMINAL ADJUSTABLE± 5 VDC± 10 VDC0 TO +10 VDC0 TO -10 VDC4 TO 20 mA± 5 VDC± 10 VDC0 TO +10 VDC0 TO -10 VDC4 TO 20 mA± 5 VDC± 10 VDC0 TO +10 VDC0 TO -10 VDC4 TO 20 mA
OUTPUT LOAD LIMITS OHMS5 Ω TO 400 Ω5 Ω TO 400 Ω5 Ω TO 400 Ω

* Oscillator output voltage adjusted via span adjustment potentiometer.
* Oscillator output current operates into a 100 ohm load with less than 0.25% Distortion.
** Output voltage and or current determined when using transducer whose sensitivity is 0.500 V/v +/- 10% at both ends of stroke Adjusted via the span control potentiometer.
*** Output temperature coefficient for voltage output din rail series +/- (.01% Of output +/- .00025V/deg.F)
*** Output temperature coefficient for current output din rail series +/- (.008% Of lvdt stroke + .00122Ma)
**** Output polarity, when connected as shown the output voltage will become more positive as the core moves towards the lead end. Polarity may be reversed by interchanging connections to pins # 7 and 9

 

Mechanical Outline

SPECIFICATIONVALUE
NON-LINEARITY≤ ±0.25% FS (Best Fit Straight Line)
REFERENCE FREQUENCY7.0 KHz
SENSITIVITY0.50 V/V ±10% at FULL SCALE
INPUT VOLTAGE20 VRMS, Max.
NULL VOLTAGE< 1.0% Excitation Voltage
TEMPERATURE COEFFICIENT< ±0.001% FS/°F Zero, < ±0.01% Reading/°F Span
TEMPERATURE RANGEOperating: -67°F to +220°F (-55°C to +104°C); Storage: -67°F to +275°F (-55°C to +135°C)
MATERIALSStainless Steel Housing and Shaft; Aluminum Connector and Adapter

Interconnection Diagram

Block Diagram