LTR27 Carrier-board ADC module with configurable number and type of galvanically isolated measuring channels

Carrier-board ADC module with configurable number and type of galvanically isolated measuring channels
  • Individual galvanic isolation of measuring channels
  • Direct connection of industrial sensors of the main types

This module is for you if you need of data acquisition from a large number of sensors measuring slowly varying physical quantities (for example, temperature, pressure), with outputs for voltage and current sensors, thermocouples or RTD thermotransducers, and also if independent measuring circuits and the most easy ans simple connection are required.

Configurable modular design of LTR27 allows simultaneous installation of a variety of H-27x submodules and the implementation of a variety of isolated measuring channels for measuring constant and slowly varying voltage, current and resistance.

Individual galvanic isolation of measuring channels simplifies the process of building multi-channel measurement systems for data acquisition, provides high reliability and noise immunity.

The possibility of installation or replacement of measuring submodules by the user improves performance and improves maintainability.

ADC
Number of channels from 1 to 16 (configurable)
Number of installed submodules of H-27x series from 1 to 8 (the set of submodules can be arbitrary)
Type of measurement channels Parallel (without commutation), synchronous
Frequency of data acquisition for each channel from 5 Hz to 100 Hz
Individual galvanic isolation
— The inputs of each channel are galvanically isolated from the ground (case) of the LTR crate and from other channels and LTR modules
Isolation between the combined contacts of each measuring channel, on the one hand, and the measuring contacts of the remaining measuring channels, on the other hand The test voltage of an alternating current of a sinusoidal form with a frequency of 50 Hz and rms value of 150 V for 1 minute
Note:
Installation of submodules H-27x is mandatory. Installation from 1 to 8 submodules is allowed.
The module with any number of submodules occupies one slot in crate.

 

External signals connector

Hardware description, assignment and connection of signals is given in the User's Guide.

Descriptions

  • ltr27api_en.pdf (filesize: 333 882 bytes, date: 19.02.2018)

    LTR27 module. Programmer's Guide.

  • ltrapi_en.pdf (filesize: 604 618 bytes, date: 15.02.2018)

    Ltrapi basic library. Programmer's Guide.

  • ltr_cross_sdk_en.pdf (filesize: 551 553 bytes, date: 13.02.2018)

    Description of the software for Windows, Linux, FreeBSD and QNX.

  • ltr_en.pdf (filesize: 11 066 427 bytes, date: 25.12.2017)

    LTR modular DAQ system. User's Guide (revision 3.1.0).

    • General characteristics and principles of construction
    • Working with LTR crate
    • Overview of LTR crate architecture
    • LTR11 ADC module
    • LTR212 (M) strain measurements modules
    • LTR27 measuring module
    • LTR41, LTR42, LTR43 digital I/O and synchronization modules
    • LTR51 frequency meter module
    • LTR22 ADC module
    • LTR24 (-1, -2) ADC modules
    • LTR25 ADC module
    • LTR34 DAC module
    • LTR35 DAC module
    • LTR114 ADC module
    • LTR210 ADC module
    • LTR00 Dummy module
    • Low-level programming of LTR-EU crate
    • Specification
  • ltr_soft_getting_started_en.pdf (filesize: 269 974 bytes, date: 13.02.2018)

    Starting to work with DAQ system LTR. Questions about the software.

LGraph2 software package

  • lgraph2.zip (filesize: 24 391 141 bytes, date: 24.04.2019)

    LGraph2 is a free multi-channel data recorder for Windows. Version 2.35.00 provides the possibility of simultaneous data visualization and recording from the ADCs: L-502, L-780M, L-783, L-791, E-502, E14-140, E14-140M, E14-440, E-154, E20-10, LTR11, LTR114, LTR27, LTR212, LTR216, LTR22, LTR24, LTR25, LTR51. It requires an updated version of the LComp driver (from version 01.04.2010) and ltrserver (no lower than 1.5.2.1).

Software for Windows

  • lcard-opc-setup.exe (filesize: 12 440 520 bytes, date: 09.04.2019)

    OPC DA Server for L Card data acquisition modules and LTR crate system. Version 1.0.10.

  • lcomp.exe (filesize: 6 498 080 bytes, date: 20.03.2019)

    Beta version. LCOMP library for Windows XP/Vista/Win7/Win8/Win10 32 and 64-bit versions with drivers. The installer and drivers are digitally signed. The library is built on the basis of modern WDM-drivers rewritten on WDF. It includes the WDM driver itself for L-CARD hardware, the DLL library with source code, programming examples, electronic description, etc. The LCOMP library provides support for almost the entire range of products: PCI boards, USB modules. ISA support is excluded.

    The library includes “L-Graph I” software. L-Graph I supports the following devices: L-1450, L-761, L-780, L-783, L-791, E14-140, E-154 and E14-440. Files recorded by L-Graph I can also be read and processed using the demo-version of PowerGraph v.3.X.

  • ltrd-setup.exe (filesize: 1 462 392 bytes, date: 18.12.2018)

    The ltrd service. Version 2.1.7.0. Provides communication with LTR crates. It is a replacement for the LTRserver software while maintaining the compatibility of the program interface. ltrd is designed for the same purpose as LTRserver, but it is a service that runs when the system is started. The graphical interface to the service is provided by a separate LTR Manager program.

    Attention! Only one of the programs ltrd or LTRserver can work at a time.

  • ltrdll.exe (filesize: 1 238 560 bytes, date: 26.08.2019)

    Libraries for working with LTR crates and modules. Version 1.32.10.

  • ltrmanager_setup.exe (filesize: 7 971 712 bytes, date: 13.12.2018)

    LTR Manager software. Version 1.5.2. Graphical interface to the ltrd service. Provides an interface similar to the LTRserver interface when working through the ltrd service.

Contacts

Phone: +7 (495) 785-95-19
Fax: +7 (495) 785-95-14

Sales department: en@lcard.ru
Technical support: en@lcard.ru

5 Varshavskoye shosse, corp. 4, build. 2
Moscow 117105
Russian Federation

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More than 3,000 customers worldwide are already using L-CARD electronic equipment for a wide range of research and industrial applications. We are glad to help you at any stage of creating an electronic product: from development and production to post-warranty support.

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