UK Supplier of Data Acquisition & Thermal Imaging systems, software and services



A high-speed logger with sampling rates of up to 10,000 measurements per second. Available in nine different versions, differing in the number of inputs and outputs. 

SKU LogMessage Category

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Modular stand-alone data logger, LogMessage from Delphin Technology.

The Delphin Technology LogMessage data loggers are universal. Whatever the application (slow or high-speed acquisition) Delphin has a LogMessage version for any user requirements. ProfiSignal Go software enables professional evaluation of online and offline data. Additionally, LogMessage devices function intuitively, making inputs easy to configure, as well as to save data, and to display data as trends.

LogMessage devices are designed for permanent operation and subsequently can be depended on to perform reliably over the long term. 

Product Features

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 analogue inputs for mA-, mV-signals, RTDs, or any thermocouple
  • Signal rate of 1 Hz to 10 kHz
  • Digital inputs suitable for up to 90 VDC
  • Frequency inputs up to 35 kHz
Secure data storage

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

  • 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
Galvanic isolation included

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

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

LogMessage devices are suitable for both slow- and high-speed measurements. Time resolution for analogue 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.

Software channels

Software channels are capable of performing computations on online measurement data, and used for visualisation, 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


  • Secure data acquisition with standalone capability
  • PC-independent measurement and testing
  • Acquisition via universal inputs
  • Product testing, laboratory, R&D
  • Mobile data acquisition
  • Fault diagnostics at machine/plant
  • Status and event logging
  • Energy efficiency measurements
  • GPS data logging and remote monitoring
  • Temperature data acquisition


Model Versions

LogMessage devices are available in nine different versions. The versions differ in the number of inputs and outputs. All versions are identical in respect of interface options, internal functions, galvanic isolation and data logger memory. LogMessage is a genuine high-speed logger with sampling rates of up to 10,000 measurements per second.

The LM 5000 version has an increased isolation voltage of up to 650 VDC between inputs.

LogMessage 1000 – the entry-level model with 15 analogue inputs

The LogMessage 1000 is equipped with 15 analogue inputs and a sampling rate of up to 600 measurements per second. The inputs can be used for the data acquisition of mV, mA signals or any type of thermocouple. All inputs have differential and galvanic isolation.

LogMessage 2000 – measurement data acquisition and automation

The LogMessage 2000 is equipped with 10 universal analogue inputs, one analogue output, 12 digital inputs (11 counters), and 17 digital outputs. The device has a range of internal monitoring and control functions to enable it to be used as a measurement data acquisition device as well as an independently operating system for control, automation or monitoring tasks.

LogMessage 3000 – fault diagnostics made easy

The LogMessage 3000 is equipped with 15 analogue inputs (600 Hz sampling rate) and 24 synchronous digital inputs (with a time resolution of 1 msec). The device is particularly suited to fault analysis as well as to processing digital and analogue events.

LogMessage 4000 – the monitoring device

The LogMessage 4000 is ideal for monitoring requirements. Any number of alarm and logic channels can be configured to the 8 analogue inputs. Any of the 5 digital outputs can be switched irrespective of the current alarm situation.

LogMessage 5000 – galvanic isolation voltage of up to 650 VDC

The LogMessage 5000 is equipped with 16 universal analogue inputs. The inputs are designed to cope with high voltages between the individual channels. The LogMessage 5000 is therefore capable of the problem-free measurement of non-isolated signals

LogMessage 6000 – universal measurement and monitoring

The LogMessage 6000 is equipped with more than 25 analogue inputs. The device can be used for direct acquisition, monitoring and recording for any thermocouple or RTD sensor.

LogMessage 7000 – the thermocouple logger

The LogMessage 7000 can acquire measurements from up to 30 thermocouples. Configuration software is available to set channels to specific thermocouple types.

LogMessage 8000 – independent measurement and control

The LogMessage 8000 is equipped with 15 analogue inputs and 12 synchronous digital inputs. The device also has 16 digital outputs to control and manage alarms and events.

LogMessage 9000 – the universal logger

The LogMessage 9000 is equipped with 20 analogue inputs, 2 analogue outputs and 2 digital outputs. The device has an over- all sampling rate of up to 1200 measurements per second and can directly acquire, monitor and record data from any thermocouple or RTD sensor.

Model Type
Analogue inputs
Voltage / current measurement range ±156mV to ±10V
Sensors Thermocouples, RTD -
Potential isolation to system 750VDC
Potential isolation to channels 110V 650V 100V
Resolution 24bit 14bit
Measurement accuracy V / mA: 0.1%
RTD100: 0.1K
RTD1000: 0.05K
Thermocouples: 0.1% EW
Analogue outputs
Resolution / potential isolation 16bit - 12bit
Potential isolation 750V - 100V
Output 0/4 - 20mA - 0 - 10V
Max. load / min. load 650ohm - 2.5Kohm
Digital inputs
Potential isolation 2.5KV
Input measurement range low: 0 - 1.5VDC @0 - 1.5mA / high: 3.5 - 90VDC @2mA
Frequency / counter inputs
Potential 2.5KV
Measurement range low: 0 - 1.5VDC @0 - 1.5mA / high: 3.5 - 90VDC @2mA 
Measurement frequency to 30KHz at TTL level
Digital outputs
Potential isolation 2.5KV
Switching voltage max. 50VDC @2.5A
Data Storage
Standard size / measurement values Storage partitionable as required, standard 3.5GB
Max. 250 million measurement values
Max. size / measurement values 15.5GB / up to 1 billion measurement values
(7 billion values for LogMessage 4000)
 Physical equipment COM1 / COM2 RS485, 9-pole sub D-plug, DIN EN ISO 19245-1
Physical equipment COM3 / COM4 RS232, 9-pole sub D-plugs
Protocols COM1 - COM4 Modbus RTU master / slave, customer specific protocols
Ethernet RJ45 (8-pole STP plug) 100base-TX
Protocols: TCP/IP, HTTP, SMTP, NTP, Modbus TCP Client / Server
USB USB 1.1 for data memory read out
CAN 9-pole sub D-plug, Protocols: CAN Raw 50K - 1Mbaud rate
General technical information
Dimensions / weight 200 x 73 x 118mm / 1Kg
Fixing Rail mounting DIN EN 60715 or screw fixing
Signal connections Detachable screw terminals, 33 terminals in 2 rows, lead protection, connecting cable max. 2.5mm2
Temperature range -20 - 60°C
Power supply 12 - 36VDC / 12-28VAC eff. / ±10%; for LM4000 min. 18VAC/DC
Power input <10 Watt
LogMessage Specifications LogMessage Specifications

LogMessage 5000 Product Guide LogMessage 5000 Product Guide

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