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

Expert Key Series

Manufacturer: Delphin Technology AG


Expert Key devices acquire and monitor measurement data and automate experiment and test stand installations. Works with ProfiSignal Go – professional software for the online or offline monitoring and analysis of measurement data. Expert Key is available in four models: for laboratory (L), industry (C), testing (P) and temperature mesurement (T). Expert Key is therefore a universal and quick to deploy data acquisition system for permanent or mobile systems.
Expert Key is a compact device with a wide range of analog and digital inputs / outputs and plug-in terminals. Expert Key has two alternativ interfaces: USB and LAN. These enable measurement data to be acquired locally at a PC or, for example, transmitted from a test stand via a com- pany LAN. Expert key enables fast system set-up and mobile measurement with a laptop and the ProfiSignal Go software. Expert Key is also suitable for permanent installations using cabinet systems.

Product features:

  • Communicates via USB or LAN
  • Universal inputs and outputs
  • Cost effective complete hardware and software package
  • Synchronizing of multiple devices
Channel Types
  • Voltage < 50V
  • Current
  • Thermocouple
  • RTD
  • Digital IN / Pulse
  • Digital OUT
  • Voltage OUT
  • Ethernet
  • USB


Expert Key devices are available with a range of channel numbers. Expert Key type 100 is equipped with a wide range of analog and digital inputs and outputs and is highly suited for use within test engineering.

Expert Key type 200 has 28 universal inputs and is highly suited for analog data acquisition.

Expert Key Models

Universal connectivity

Differential inputs are used exclusively as input signals. These can be configured individually as mA, mV or V signals and as RTDs or thermocouples. Any sensor can be attached to the terminals which are able to accommodate lines of up to 2,5 mm2 in diameter. Integrated signal conditioning enables mA, V measurement data to be converted into the required unit of measurement, e.g., bar, N, %rh etc. In contrast to many low-cost products, Expert Key devices are equipped with full potential isolation.

Analog input sampling rates achieve 100,000 measure- ment values per second. Analog output signals can be out- put to V or mA switchable outputs. Digital inputs (with counter functions of up to 1 MHz) and digital outputs (with PWM function) with switch capacities of up to 30 W are standard in the 100 version.

Delphin Expert Key

Complete system including software

Channels are easy to configure using the powerful ProfiSignal Go software. ProfiSignal Go has the following drivers to enable integration into the user's existing software systems: LabVIEW™ , DASYLab™, OPC-Server, Modbus TCP driver for deployment in industrial environments, as well as the OCX driver and .NET programming interfaces.

Delphin Expert Key


Device Type100200
Analog inputs1428
Current source for RTD48
Sensor typesmV, mA, thermocouples, RTD, resistance
Resolution18 bit
Sampling rate100KHz
Measurement range± 100 / 200 / 500mV; ± 1 / 2 / 5/ 10V
Intergrated compensation for thermocouples12
Galvanic Isolation500VDC
Analog outputs22
Resolution16 bit
Max. output rate50Hz
Output voltage / current0 - 10V / ±10V / 0 - 20mA / 4-20mA / ±20mA
Galvanic isolation500VDC
Digital inputs121
Logic levelLow: 0 - 2.5V / high: 3 - 90VDC @ 2.7 - 3.5mA
Max. input frequency2 x 1MHz, 10 x 10Hz
Galvantic isolation2.5KVDC
Digital inputs with counter function121
Counter resolution64 bit
Max. input frequency / resolution2 x 1MHz / 1µS, 10 x10KHz / 100µS
Measurement range0.1Hz to 1MHz or 10KHz
Digital outputs81
Max. switching voltage / current30V / 1A or 40V / 0.75A or 50V / 0.6A
Max. output rate10Hz
Galvantic isolation2.5KVDC
Digital outputs with PWM function41
Duty cycle1:100 to 1:500
PWM basic frequency5Hz to 10KHz
General techincal information 
Sesnor connectionScrew terminals with 0.14 to 0.25mm2 openings
Power supplyExternal power supply
Max. power input6Watt
Power supply9 to 24VDC
Temperature range0 to 50°C
Environmentally friendlyConforms to RoHS
USB interfaceUSB 2.0
Ethernet interface100Base-TX
Expert Key L 100/200 dimensions / weight50 x 185 x 215mm / 750g
Expert Key C 100/200 dimensions / weight57 x 280 x 208mm / 1.5Kg
Expert Key P 100/200 dimensions / weight495 x 135 x 305mm / 6.5Kg
Expert Key T 100/200 dimensions / weight495 x 135 x 305mm / 6.5Kg

Expert Key L

The Expert Key 100L and 200L have a tabletop design. A pop-up lid gives a clear overview of connections. Sensors and actuators are connected via plugs located on the sides. Because of the L model's universal capabilities, it is particularly sui- ted to laboratory, experiment, test and service applications. Brackets for wall-mounting are included in the delivery as well as a power supply adapter.

 Expert Key L Series

Expert Key C

The Expert Key 100C and 200C are identical to the L models apart from the housings. The housing design enables the devices to be used in cabinets or 19” rack systems. Expert Key can also be supplied without an housing to enable OEM systems.

 Expert Key C Series

Expert Key P

The Expert Key 100P and 200P have a console-type design. These models are intended fo use in testing and laboratory environments Signals are connected via 4 mm safety la plugs. Measurement data from sensors can b transmitted to a PC via USB or LAN interfaces RTD sensors, voltage and current signals ar directly connected to any of the analog inputs ProfiSignal software enables users to generate systems for data acquisition that comply to FDA 21 CFR Part 11.

 Expert Key P Series

Expert Key T

The devices, designed for multi-channel temperature measurement but also suited to temperature measu- rement and combined high-speed signal acquisition.
The compact Expert Key T devices have console-type housings. They are intended for use in laboratories and test stands as tabletop or wall-mounted devices. The analog and digital inputs and outputs are easy to access and signals and actuators are quick to connect requiring no tools.

 Expert Key T Series

Complete system
ProfiSignal is a complete software system for data acquisition, analysis, visualisation and automation. The software is very user-friendly and combines professional functionality with easy operation. ProfiSignal provides a clear and logical overview of all measurement systems: whether for single or multi-thousand channel applications. For new users, ProfiSignal is quick to learn. ProfiSignal is modular, scalable and available in three versions: Go, Basic and Klicks. Each version has backward compatibility for operability, data files and application projects.

Measurement Database Included
Measurment hardware configuration takes place with the DataService / Configurator software included in ProfiSignal. The software configures hardware and software interfaces and records data securely and permanently.
The DataService saves measurement data to a database. Any ProfiSignal version on the network can then access these databases and immediately display their data as trends.

  • Confgures hardware
  • Records data to data files
  • Records data to databases
  • Calculation functions
  • Monitoring functions
  • Event Alarms (e-mail, text message, fax)
  • User management and password protection systems
  • Standard software interfaces (OPC, Modbus ...)
  • Customized software interfaces (OCX, .NET ...)

Overview of software modules

ProfiSignal GO

ProfiSignal GO is a runtime system enabling measurment data to be displayed and analyzed in just three steps. The GO version is able to analyze large volumes of offline and online data.
  • Data acquisition and recording
  • Data analysis and calculations
  • Online and offline trends
  • Data export and print outs
ProfiSignal Basic

ProfiSignal Basic, like ProfiSignal Klicks, is a developmental system for generating custom systems with visualization and trend functions

  • Operation and observation
  • Process visualization
  • Report generation
ProfiSignal Klicks

ProfiSignal Klicks is software for test automation and the programming of control systems

  • Automating test stands and process control systems
  • Automating evaluation and analysis functions
  • Generating parameter graphs
  • Selective frequency band evaluation


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