Delphin Technology

Expert and Message series

 All Delphin products, from the Message and Expert devices through to the ProfiSignal software, are supplied from a single source.

Also included are consultancy, planning, system installation and training services.

Delphin develops, manufactures and sells hardware for measurement data acquisition, automation and monitoring requirements.

Hardware development and manufacture comply to the high standards required and are certified according to ISO 9001:2008.

Delphin's primary aim is to deliver universal products to fulfill any measurement requirement. 


Expert Logger is a new generation of data loggers. It combines the latest communication technology with advanced measurement technology, and is based on FPGA technology to make it especially powerful. It can process up to 46 analog input channels at both low and high rates of sampling. Measurement data can be accurately acquired, independently stored and transmitted to the internet or a PC for evaluation via USB, LAN, WLAN or LTE.

Operation made simple

Sensors are connected via plug-in screw terminals and a chart clearly shows how channels are arranged. Users always have a good overview of the channels despite their high density. Each set of four terminals can be configured as two differential inputs to measure voltage, currents, thermocouples, or to take measurements from a 4-wire RTD.

Configuration - fast and easy

The Expert Logger is simple to configure from a PC. These settings remain stored within the Expert Logger even when disconnected from the power supply. The device settings can also be read out and stored on a PC and analysed offline without the need for a connected Expert Logger. The offline configuration settings are then simply read into the device when connected. The software used for configuration is simple to operate to let users fully focus on their measurement tasks.

Intelligent signal processing

Signal processing using internal software channels significantly simplifies measurement tasks. Flexible calculation channels enable measurement data to undergo further computation and recording. Integrators directly calculate volumes or quantities from time related measurement data such as mass and discharge flow rates. Limit values can monitor measurement data and be used to switch digital outputs or automatically send emails.

Complex signal processing is possible using pulse counters, stop-clock functions and operating-hours counter. Averages can be calculated and recorded as time-weighted or moving. The Expert Logger‘s software channels clearly set it apart from other loggers and make it very popular among users.

Product features

  • Universal analog inputs (mV, mA, TC, RTD)
  • SDI12 interfaces for environmental sensors
  • Independent operation possible with batteries or rechargeables
  • Minimal energy consumption via a sleep function
  • 2 .. 14 GB of internal data storage for up to 125 million measurement values
  • PUSH function to send measurement data to the internet
  • WLAN link to PCs and mobile devices
  • LAN and USB interface to a PC or network
  • Monitoring and data logging in a single device

Applications with Expert Logger

  • Data logging
  • Environmental measurement technology
  • Product testing
  • Measurement data diagnosis
  • Lab data acquisition
  • Trials and tests
  • Energy optimization


The new Expert Key devices have been specially developed for use in PC-supported measurement and test engineering environments. A low cost complete package comprising Expert Key hardware and ProfiSignal Go software enables users to commence work immediately. Our customers say that "measurement engineering should always be this easy!"


Product highlights

  • 14 or 28 universal analog inputs
  • Inputs can be universally used for thermocouples, RTD sensors and mV or mA signals
  • Differential inputs with 18-bit resolution
  • 100,000 measurement values per second
  • Analog and digital outputs, PWM outputs, counter inputs
  • USB and Ethernet interfaces
  • Full potential isolation
  • Convenient connector clamps for up to 2.5 mm² lines
  • Measurement data portrayal in trends and ASCII exports
  • Excellent value for money
  • "Made in Germany" quality

Developed for the user

Expert Key devices have been designed and developed according to actual customer requirements and incorporate reliable measurement technology. The devices can be connected to PCs via USB or LAN interfaces.

The standard version provides users with a practical range of functions. Users select the functions that they need.

Expert Key devices are simple to use and the ProfiSignal Go software is highly user friendly. A patented measurement procedure and ease of operation enables users to quickly carry out data acquisition and evaluation without the need for extensive periods of learning and familiarization. Just three steps are required to portray measurement data in trend diagrams. Data is stored continuously to a database. Users will be impressed by the system's functioning.


Expert Key applications

  • Mobile and fixed systems for measurement data and process data acquisition
  • Process visualization, analysis, automation
  • Research and development
  • Experiments and product testing
  • Laboratory automation
  • Test engineering and test stand automation
  • Servicing and fault diagnostics


LogMessage devices have been specially developed for use as universal data loggers. A complete package that includes a LogMessage device and the ProfiSignal Go software enables users to immediately begin their measurement and analysis tasks. Delphin customers are especially impressed by the system's intuitive method of configuration and the many options provided by the device.

Product highlights

  • Reliable data logger including potential isolation
  • 8 to 30 analog inputs in nine different versions
  • Universal 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
  • Digital inputs and outputs, counter and frequency inputs
  • Storage capacity of up to 1 billion measurement values (standard = 250 million)
  • Measurement data portrayable 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
  • ProfiSignal Go software included in package

LogMessage is an independently operating data logger for acquiring, monitoring, computing and storing measurement data. An internal data memory enables uninterrupted storage of up to 250 million measurement values. LogMessage is available in nine different versions.

Every LogMessage device is delivered with the ProfiSignal Go software. Its intuitive operation enables users to easily and quickly acquire and evaluate measurement data with no need for extensive learning and familiarization. Users will be impressed by the system's range of functions.

As well as ProfiSignal Go, Delphin has other software for all types of application:

Delphin delivers systems to match user requirements: e.g. long-term monitoring, machine monitoring, or remote monitoring.


LogMessage applications

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


TopMessage devices are used as decentralized units for process data acquisition, as independent units for process & control or monitoring, or for remote monitoring functions. For such applications TopMessage provides all the required functions in a single device.

Product highlights

  • Secure and reliable measurement data acquisition
  • Compact and modular design
  • Independent operation via integrated data memory
  • Integrated signal conditioning
  • Full potential isolation
  • Universal inputs and outputs (Pt100, NTC, TC, mV/mA ...)
  • Stand-alone processing capability and extended functions via virtual channels
  • Connection of external equipment (PROFIBUS, RS232/485, Modbus ...)
  • Easy to configure from any PC. Programming expertise is not required
  • Fully compatible software

The device is easy to integrate into existing company networks via its network interface, or it can be connected directly to a workstation PC or laptop/netbook. TopMessage devices can be used for remote monitoring via its up to date (UMTS) interface.

A modular design allows TopMessage devices to be adapted to any measurement and control task. Universal inputs enable any unit of measurement to be acquired (e.g. temperature, pressure, flow, vibration etc.). Data is scaled directly and recorded linearly. Conversions from mA to bar or ml/min are no longer necessary and integrated signal conditioning enables users to immediately process data at the unit of measurement required.

24-bit resolution A/D converters deliver high-level precision and permit the connection of extremely small signals (e.g. thermocouple). Integrated compensation means direct measurement can be performed.

TopMessage devices are equipped with universal inputs that allow the connection of any type of signal including non-isolated inputs. Expensive measurement transducers are therefore unnecessary. Potential isolation across channels and differential inputs saves both time and costs.

The internal data memory can store up to 132 million measurement values, continuously as well as with edge or level triggering. No PC-support is required.

The fully compatible ProfiSignal software provides on/offline analysis, visualization and operation from any PC workstation as well as PC-controlled process automation and database communications via ODBC/SQL.


TopMessage applications

  • Modular measurement data and monitoring
  • Remote monitoring of machinery and systems
  • Process data acquisition and preprocessing
  • Fault data acquisition and fault diagnostics
  • Acquisition, processing and recording of PLC and field bus signals
  • Monitoring device for process and vibration signals


ProfiMessage devices have been specially developed for use as modular measurement, control and monitoring units. ProfiMessage uses a master/slave concept and has a range of I/O modules to meet the requirements of any system. This enables the problem-free functioning of multi-channel systems.


Product highlights

  • Secure and independent measurement data
  • Compact and modular design
  • Monitoring and automation functions
  • Combined processing of vibration and process data
  • Universal analog inputs with high measurement precision
  • Galvanic isolation between channels
  • Simple and intuitive configuration and operation
  • Ethernet interface for online operation
  • USB interface for data memory read out
  • PROFIBUS interfaces (single or redundant, according to PNO 2.212 V1.2)
  • Four serial interfaces
  • Freely configurable CAN bus interface
  • Configuration in XML format

ProfiMessage devices have universal connectivity to any process. They also have flexible I/O modules and a diverse range of field bus interfaces. ProfiMessage is extremely easy to connect to PLC control systems to perform data exchange. All measurement data is recorded at high temporal resolution.

ProfiMessage has integrated control, calculation and monitoring functions which make it the ideal combination device. Measurement data can be simultaneously acquired and monitored with control and regulation tasks being independently processed. Read more about these unique functions in the software channels section.

ProfiMessage devices for independent measurement and recording. An internal 16 GB data memory is able to record several billion measurement values. At the click of a button the data can be transferred to a USB stick and evaluated offline. Data read outs can also take place online via an Ethernet interface. These can be performed manually or automatically according to a time plan.

ProfiMessage is ideal for fast, precise and galvanically isolated measurement data, as well as for intelligent pre-processing and monitoring. Applications range from the monitoring and observation of industrial processes and machinery through to vibration measurement technology.

In conjunction with the AMDT I/O vibration module, ProfiMessage can be used to process shaft and bearing vibrations. The devices are then typically used in condition monitoring systems as monitoring and analysis units.

By connecting the device to a modem enables fully independent operation for remote monitoring of equipment, ships, vehicles or any other decentralized machinery.


ProfiMessage applications

  • Modular measurement data acquisition and monitoring
  • Process data acquisition and preprocessing
  • Fault data acquisition and fault diagnostics
  • Acquisition, processing and recording of PLC and field bus signals
  • Monitoring device for process and vibration signals
  • Automation device for experiments and test stands
  • Remote monitoring device for plant and machinery



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