The LVDT-8A signal conditioning board was designed based on a customer request to fill a solution void in the automotive parts manufacturing industry. The board supplies excitation and the corresponding conditioning of the outputs for up to eight independent LVDT transducers simultaneously. Those outputs are then readily available via removable screw terminals for introduction to a data acquisition or measurement circuit such as an analog to digital converter or simply by using a display meter.

A new feature that sets our board apart from others (including our discontinued model LVDT-8), is that the board no longer has a multiplexer to combine all eight outputs into a single output. Advantages of this approach is that there is no speed limitation associated with monitoring or acquiring the positioning signals. Take the data as fast as you need and run with it. No multiplexer control signaling or timing issues. Do you want to use this conditioner with a PLC A/D module? No problem, it will even operate natively on the 24VDC commonly used with PLCs.

The board is flexible with different transducer types due to user-configurable excitation voltage levels for precise tuning of your specific application. This reduces self-heating that can come from a rigid excitation voltage by using the lowest voltage that produces reliable and repeatable measurements. It also has a very handy LED display utility for quick and easy checkout of the sensors and signal conditioner operation. This inherently makes the product more serviceable and vastly more user friendly. The board is packaged in a rugged, industrial enclosure which offers physical protection and features a DIN rail mounting provision for industrial environments.

ACCESSORIES

Accessories include an assortment of 37-pin ribbon cables for connecting the conditioned outputs to a variety of readily available analog to digital converter products. ACCES offers a broad range of A/D products using USB, RS-485, PCI, PC/104, Ethernet, 900MHz/2.4GHz wireless, and even ISA bus types. Other than that you just need some LVDTs and some wiring to connect them to the removable screw terminals that ship installed on the board.

APPLICATIONS

• Factory automation
• Manufacturing test
• Process monitoring
• Weighing systems
• Motion control systems
• Metal fabrication

SOFTWARE

No software is necessary to start using the LVDT-8A. It can be utilized right out of the box. A user friendly setup program and user manual is included with each shipment. The setup program can be used to help with the selection of application specific options and the user manual contains full details on the boards operation.

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers

A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.

Specifications

Transducers Served:

LVDT, RVDT, LVRT with primary impedances of 150 Ohms or more

Signal Conditioner

AD698AP

Excitation Frequency:

5kHz standard
The frequencies may be anywhere in the range of 20Hz to 20kHz however this is a factory installed option which should be specified at the time of purchase. Frequencies may be the same or different for each LVDT channel.

Power Required:

+24 (18 to 36) VDC at 350 mA maximum
Call factory for installed power options (read on for details) which should be specified at the time of purchase.
Options Include:

• + 12 (9 to 18) VDC at 700 mA maximum
• + 48 (36 to 75) VDC at 175 mA maximum
• External power supply: ±12VDC or ±15VDC at ±300 mA maximum

Output Analog Voltage:

±10VDC or ±5VDC

Environmental

Operating Temperature:

0°C to 65°C

Storage Temperature:

-40°C to +100°C

Humidity:

0 to 90%, non-condensing

Size (LVDT-8A board):

8.0" long (203 mm) X 4.74" wide (120 mm) X 0.75" high (19 mm)

Size (T-BOX):

8.5" long (216 mm) X 5.25" wide (133 mm) X 2.0" high (51 mm)