Probe with sensor and connector

• Metallized sensor surface to which a bias voltage of up to 500 V can be connected via the control unit
• Delivery also with double probe for direction-dependent measurement of the energy influx (this includes completely different system components)
• Length of the probe shaft from 5 to 50 cm, depending on customer requirements
• special connector for connection to the probe cable

probe cable

• vacuum-compatible connection cable between probe and vacuum feedthrough
• Sheathing made of durable stainless steel mesh
• Cable length from 0.2 m to 4 m, according to customer's requirement
• special probe-side connector
• LEMO connector as a connector to the vacuum feedthrough. When using other feedthrough plug type according to customer requirements

vacuum feedthrough

• A LEMO vacuum feedthrough mounted on a blind flange KF40 is supplied as standard
• other feedthroughs on request
• Can also be mounted on other sizes and types of feedthroughs, such as ISOK or CF
• Use of other types of feedthroughs on request

Connection cable to the control unit

• multi-pole connection cable between the vacuum feedthrough and the control unit
• Length from 1.5 m to 12 m according to customer's requirement
• equipped with LEMO connectors as standard, also with other suitable types of connectors on the probe side depending on the type of feedthrough

External control unit

• Serves to provide the supply voltage for the probe, its control, the temperature regulation as well as the recording and processing of the measured values
• The measured values are transmitted to the computer and control commands are received via a USB interface.
• Set parameters for the measurement regime and temperature control are saved and retained after switching off

Basic software for operation with an external control unit

• Configuration of the measurement process, such as the sampling rate of the measured values, coefficients of the temperature control and the target temperature of the probe
• continuous display of the measured values in a simple diagram
• Storage of the readings of temperature and heating power of the probe in a text file in tabular form

Internal control unit (optional)

• Converter card integrated in the computer for transmitting the control signals and receiving the measured values
• For this purpose, an externally connected signal adjustment is supplied, which is connected to the converter card with a special cable
• All tasks of control, regulation, recording of measured values and processing of measured values are taken over by a special software installed in the computer.
• This embodiment variant is particularly interesting for R&D issues, as it allows more degrees of freedom for the design of the measurement process and the processing of the measured values.
• But also for industrial applications to enable integration into existing plant systems

Analysesoftware „curve“ (optional)

• Graphic visualization of functions from tables of values saved with the control software of the probe as well as in any format
• Convenient interactive variation of the graphical representation with a simple mouse click (zoom, move, smooth, fit, etc.)
• Section-by-section fitting of the measured values and analysis of level differences of the course of the heating power of the sensor to neighboring sections
• Automatic compensation of measured value drifts caused by external heat sources.
• Determination of the functional equation of drifts
• Automatic determination of the energy values of any length of measurement series, taking into account the drifts and control oscillations that have occurred
• Output of the calculated energy influxes in tabular form
• Reduction of the time required to up to 1/100 compared to the determination of measured values with other systems
• No control of the probe or recording of measured values online

Software for variant with an internal converter card (optional)

• Configuration of the measurement process, such as the sampling rate of the measured values, coefficients of the temperature control and the target temperature of the probe.
• Specification of threshold values for the energy influx. If exceeded, a warning signal can be passed on to an external device or a message via the network.
• Monitoring of the time course of the heating power of the probe with regard to the measured value scatter (caused, for example, by interference signals) and their drift
• Variable specification for the maximum values of current, voltage and heating power to protect the probe
• Transmission of a message in the event of a probe failure
• Remote control of the software from a host computer on a network (LAN, protocol: TCPIP)
• All functions of the "curve" software are integrated in this software!
• Even when the measurement is running, the energy input can be calculated according to these modules without disturbing the recording of the measured values.
• Extensive service modules integrated, such as measuring the resistance of the supply lines, calculating the amplification factors for the signal converter, testing the controller system, etc.