At a Glance
- 4.5Vac LVDT Excitation @ 1-5kHz
- Output: 0-5Vdc, 0-10Vdc, 4-20mA, 0-20mA, ±5Vdc or ±10Vdc
- Environmental Protection: IP65
- Bandwidth: 200Hz max.
- Mains & 18-24Vdc Versions
- Delivers Conditioned Analogue Outputs From Your LVDT Transducers
- Wide Bandwidth (20 HZ) Ideal for Test & Measurement Applications
- Choose an AC or DC Powered Unit Depending on Your Setup
- Ideal to use in Harsh Environments – Total Dust & Low Pressure Water Jet Protection
Description
The LVDT signal conditioner / LVDT amplifier from Applied Measurements is designed specifically for use with LVDT displacement transducers to provide a conditioned analogue voltage or current output.
There are two versions of the LVDT signal conditioner available: the LVDT/A which operates from 110/240Vac and the LVDT/D requires a DC supply of between 18 and 24 Volts.
The LVDT signal conditioner provides an excitation voltage of 4.5Vrms with switch selectable frequencies ranging from 1kHz to 5kHz, making it suitable for use with LVDTs from many different manufacturers. LVDT sensitivities between 20 milivolts and 10 volts can be adjusted for using DIL switches with potentiometric fine adjustment of zero and gain for precise calibration.
A wide frequency response is available from DC to 200Hz, plus a low pass filter when required to reduce high frequency fluctuations or induced electrical noise.
Suitable LVDT displacement transducers for use with the LVDT signal conditioner can be found in our LVDT Displacement Sensor product section.
Technical Specifications
| Minimum | Typical | Maximum | Units | |
|---|---|---|---|---|
| Power supply AC LVDT/A only (110/230 V AC) 50-60Hz | 99/198 | 110/230 | 126/253 | Vac |
| Power supply DC: LVDT/A and /D | 18 | 24 | 28 | Vdc |
| Power supply current DC: (depends on loading) | 138 | 145 | 150 | mA (200R) |
| Excitation | - | 4.5 | - | V rms |
| LVDT Frequency (Selected by Switch 1,2,3,4,5 kHz) | 1 | - | 5 | kHz |
| LVDT Impedance | 50 | 200 | - | Ohms |
| LVDT Sensitivity (switchable) | 0.02 | - | 10 | V |
| Gain Adjustment (Pot – fine adj) | - | - | 25 | % FSD |
| Offset Adjustment (Pot – fine adj) | - | - | 10 | % FSD |
| Offset Adjustment (Switchable – coarse adj) | - | - | 30 | % FSD |
| Output Load (voltage output) | 0 | - | 2 | mA |
| Output Load (current output) | - | - | 500 | Ohms |
| Filter cut-off (switchable ranges) | 5 | - | 200 | Hz |
| Zero Temperature Coefficient | - | 2 | 4 | µV/˚C |
| Span Temperature Coefficient | - | 0.01 | 0.015 | %/˚C |
| Linearity | - | 0.05 | 0.1 | % FSD |
| Gain Stability- 1st 1000 hours | - | 0.2 | 0.4 | % FSD |
| 90 Day Offset Stability | - | 6 | 10 | µV |
| Noise (1kHz / 20Hz filter / DC powered) | - | 3 | 7 | mV p-p |
| Output Options | ±10V, ±5V, 0 - 10 V, 0 - 5V, 0 - 20mA, 4 -20mA. NB: Current output is link selectable for source or negative sink (common negative or common positive. | |||
| Operating Temperature | 0 | - | 50 | ˚C |
| Storage Temperature | -20 | - | 70 | ˚C |
| Humidity | 95 maximum non condensing | % | ||
| Connections | Field screw terminals - 2.5mm² rising clamp | |||
| Enclosure | ABS case 160 x 80 x 55 sealed to IP65 fitted with 3 off cable glands | |||
| Controls | Gain pot, Offset pot, Coarse gain switches, Coarse offset switches, Filter cut-off switches, Frequency select switch, Output mode switch. | |||
| Environmental Protection | ABS case sealed to IP65 | |||
| Dimensions | 160 x 80 x 55 (depth) | mm | ||
| Safety/Low Voltage Directive | 73/23/EEC amended by 93/68/EEC | |||
| BS EN 61010-1:2001, IEC 1010-1-1990 | ||||
| EMC Directive | 89/336/EEC | |||
| Basic Standard BS EN 61326:1998 | ||||
| EMC Emissions | BS EN 55011:1998 | |||
| EMC Immunity | BS EN 61000-42:1995 | |||
| BS EN 61000-4-3:2002 | ||||
| BS EN 61000-4-4:2004 | ||||
| BS EN 61000-4-11:2004 | ||||
Product Dimensions
Ordering Codes & Options
| Core Product | Supply Voltage | Example Result |
|---|---|---|
| LVDT | 99-120/ 198-253Vac | LVDT/A Amplifier |
| LVDT | 18-28Vdc | LVDT/D Amplifier |
