Delphin LogMessage LM5000

16 Channel High Isolation Data Logging System

  • Analog inputs (mV, mA, thermocouples, Pt100(0)): 16
  • Sum sampling rate analog inputs: 80 measurements per second
  • Isolation voltage between the analog inputs: 650 VDC
  • Data Storage: approx. 250 mio. values, including date- and timestamp
  • Modes: stand-alone, over network or 3G
  • Signal processing: Calculation, Average, Min, Max, Limit, Logic, Integrator, Counter, Timer, SMS and Email-Alarm
  • Housing: Synthetic, rail mounting
  • Dimension: 200 x 73 x 118 mm (W x H x D)
  • Signal connections: Clamps for wires with Ø up to 2.5 mm²
  • Power supply: 12 V … 36 VDC, reverse polarity protected
  • Scope of delivery: 2 m Ethernet connection cable
  • Software required and sold separately

Call for configuration and price. 1-800-956-4437


LogMessage LM5000 Data Logger

Delphin LogMessage LM5000 Data Logger devices are specifically designed as universal data loggers.

Product Highlights

  • Reliable data logger including potential isolation
  • 16 Universal analog inputs for thermocouples, RTDs, mV or mA signals
  • High-precision differential inputs with up to 24-bit resolution
  • Galvanic isolation, isolation voltages of up to 650 V
  • Storage capacity of up to 1 billion measurement values (standard = 250 million)
  • Measurement data portrayed as trends and exportable in ASCII format
  • Excellent return on investment
  • LAN interface for configuration and data transfer
  • Serial interfaces, Modbus RTU and TCP/IP
  • A range of internal calculation and logic channels
  • Monitoring and alarm functions

The LogMessage LM5000 works completely independently as a data logger for acquiring, monitoring, computing and storing measurement data. The internal data memory allows continuous recording of up to 250 million samples. LogMessage is available in nine different styles.

ProfiSignal Go is the basic software, used for online/offline monitoring and measurement data analysis. Just three steps are required to display measurement data as trends, to analyze the data, and to evaluate offline data.

Other software is available for all types of applications:

  • ProfiSignal Go: Software for data acquisition
  • ProfiSignal Basic: software for process visualization and monitoring
  • ProfiSignal Klicks: software for the automation of process and measurement procedures

Systems are delivered to match user requirements: e.g. long-term monitoring, machine monitoring, or remote monitoring.

Examples of LogMessage

  • Data Logger for fault diagnostics
  • Energy efficiency measurements
  • Experiments and product testing
  • Remote data transfer via GSM / UMTS
  • Testing and test stand automation
  • Service data recording and fault detection
  • GPS Logging

Included in Delivery of a LogMessage logger:

  • LogMessage Device
  • Drivers for LabView ™ and DASYLab ™
  • Modbus TCP and OPC Server Interface
  • OCX driver to enable self-programming


Analog Inputs
Voltage/Current Measurement Ranges ± 156 mV … ± 10 V / 0/4 … 20 mA
Sensors Thermocouples of any type; integrated temperature compensation;
resistance thermometer RTD, NTC and linear resistances to 10 kΩ
Potential isolation 750 VDC to the system and power supply;
650 VDC between channels for LogMessage 5000;
100 VDC between channels for LogMessage 4000;
110 VDC between channels for other versions
Resolution 24-Bit precision V, mA 0.01 % from accumulated value;
14-Bit measurement precision:V, mA 0.1 % from accumulated value for LogMessage
4000; Pt100 0.1 K; Pt1000 0.1 K; thermocouple 0.1% from accumulated value
Digital Inputs
Potential isolation 2,5 kV
Input measurement range low: 0 … 1.5 VDC@0 … 1.5 mA / high: 3.5 … 90 VDC@2 mA
Frequency / Counter Inputs
Potential isolation / measuring range 2.5 kV / low: 0 … 1.5 VDC@0 … 1.5 mA / high: 3.5 … 90 VDC@2 mA
Measurement frequency up to 30 kHz at TTL-level
Digital Outputs
Potential isolation 2,5 kV
Switching voltage max. 50 VDC@2.5 A
Data storage
Standard size / measurement data Partitionable storage, standard: 3.5 GB; max. 250 million measurement records
Max. size / measurement data 15.5 GB; up to 1 billion measurement records;
15.5 GB; up to 7 billion measurement records for LogMessage 4000
Mechanical design COM 1 / COM 2 RS485, 9-pole Sub-D-connector, DIN EN ISO 19245-1
Mechanical design COM 3 / COM 4 RS232, 9-pole Sub-D-plug
Protocols COM 1 … COM 4 Modbus RTU Master / Slave, customer-specific protocols
Ethernet RJ45 (8-pole STP-connector), 100 BaseT protocol:
TCP/IP, HTTP, SMTP, NTP, Modbus TCP Client / Server
USB USB 1.1 for memory read out
CAN 9-pole Sub-D-connector, protocols: CAN Raw; baud rates: 50 k … 1 MBaud
General Technical Information
Dimensions 200 x 73 x 118 mm
Weight 1 kg
Rail mounting DIN EN 50023 or screw fixings
Signal connections Detachable screw terminals, 33 terminals in 2 rows, lead protection,
connecting cabling max. 2.5 mm²
Temperature range -20 … 60 °C
Power supply 12 … 36 VDC / 12 … 28 VAC eff. / ± 10%;
LogMessage 4000: 18 VAC/DC power input: < 10 Watt


Extensive Functions

LogMessage data loggers are universal. The devices function intuitively making it easy to configure inputs, to save data, and to display data as trends. LogMessage devices are designed for permanent operation and can be depended on to perform reliably over the long term.

A Range of Interfaces

  • LAN interface
    • Device configuration and online data transfer to PC
    • Link to UMTS-routers
    • Log memory read-out
    • Modbus TCP for data transfer using PLC
  • USB interface
    • Log memory read out
  • Serial interfaces
    • 4 x RS232/485
    • Customer-specific protocols (ASCII)

Universal Sensor Connection

LogMessage devices are precision instruments that can be switched via software to function with any type of sensor.

  • Universal use of analog inputs for mA-, mV-signals, RTDs, or any thermocouple
  • Signal rate of 0.1 Hz to 10 kHz
  • Digital inputs suitable for up to 90 VDC
  • Frequency inputs up to 35 kHz

Galvanic Isolation Included

LogMessage devices are fully protected against earth loops enabling measurements from non-isolated sources.

  • All analog inputs can function as differential inputs
  • Isolation voltage between analog inputs: 110 VDC to a maximum of 650 VDC
  • Galvanic isolation between power supply and each interface
  • No earth loop problems

Secure Data Storage

The LogMessage’s data storage capability enables it to function without PC or network support.

  • 3.5 GB of memory for 250 million data records
  • Each measurement data record is recorded with a time-stamp (date and time – at microsecond precision)
  • Measurement data can be assigned to groups and used as triggers
  • No data loss in the event of power failure
  • Alarm management with pre and post alarm data

Comprehensive Signal Processing

Software channels, configurable according to requirements, can be used for online calculation, monitoring, and many other functions. This enables data to be generated that is immediately usable. Online calculations performed on measurement data (e.g. temperature differentials) Integration functions (e.g. flows to volumes)

  • Limit value monitoring with alarm functions (switching digital outputs)
  • Counter function and operational data acquisition

Resolutions for Demanding Requirements
LogMessage devices are suitable for both slow- and high-speed measurements. Time resolution for analog measurement data is at 100-μs precision levels; digital resolution at millisecond precision. The devices are equipped for precision measurement with 24-Bit ADCs.

Web Server Included
LogMessage devices are equipped with internal web servers. The standard version displays current measurement data in a channel list as well as extensive configuration and maintenance information. In combination with the ProfiSignal WEB option, views can be generated and loaded into the LogMessage in HTML5.

Software Channels
Software channels are capable of performing computations on online measurement data, and used for visualization, storage or monitoring purposes. The processing of signals takes place independently within the LogMessage device and requires no PC support. There is virtually no limit on the number of software channels that can be used. Software channel computations run parallel to data acquisition and logging. Software channels are included in delivery.


ProfiSignal Go is intuitive functioning measurement data software for recording, trend portrayal, analysis and export. Online measurement data can be observed in a trend while evaluating archived in another trend.

Installation is very simple. It takes just a few mouse clicks to go from sensor connection to trend output.

Unlimited Trends

There are virtually no limits to trend portrayal for online and offline measurement data. Archived and online measurement data can be evaluated without having to interrupt ongoing measuring procedures. This is a unique function that is especially valued by customers.

In addition to y (t) diagrams are y (x) – and logic diagrams. The ProfiSignal Go Toolbox contains trend functions such as movable axes, zoom functions, cursors, markers and data export (e.g. as CSV or EMF files). Using the toolbox is self-explanatory. Configured trends can be saved and reused.

For visualization and automation functions, software upgrades to ProfiSignal Basic and ProfiSignal Klicks are possible at any time.

Alarm Functions

ProfiSignal Go also provides alarm management. A global alarm list provides a clear portrayal alarm notifications in tabular form. Alarm settings for the monitoring of over-runs, under-runs, process violations, status outcomes etc. are configured using the DataService/Configurator software. Measurement data can also be used to trigger specific actions, e.g. sending text messages or emails or switching digital outputs.

Interfaces and Drivers

Delphin products are equipped with drivers and interfaces to enable the import/export of data to external hardware and software. Laboratory equipment (e. g. scales, analysis/output devices) can be connected via USB and RS232/RS485 interfaces. A variety of protocols are available.

PROFIBUS and Modbus are used for data transfer between process control systems. The following interfaces are available for third-party software:

  • LabVIEW™
  • DASYLab™
  • OPC-Server
  • OPC Client
  • Modbus TCP-driver
  • OCX-driver
  • GPS-converter