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TC-003 Analog to Pulse Temperature Tramsmitter

TC-003pic

Hockey Puck Style:
The TC-003 Digital RTD Temperature Transmitter is a unique device designed to transmit the temperature measured by a PT100 RTD sensor to a PLC digital input. Although it requires only one normal digital 24VDC input on the PLC, it provides an accurate temperature measurement for use in the PLC program.

It is packaged in a standard ANSI 2”, 50mm “hockey-puck” to be installed in the head of normal industrial temperature probe assembly. The TC-003 transmitter is connected to the normal PT100 RTD.
It measures the resistance of the PT100 RTD and then calculates the corresponding temperature. It then outputs the measurement as a low speed serial pulse train to a standard PLC digital input. The PLC receives 16 bits of data in a format ready to load into a 16 bit data register. The

PLC register ends up containing the value of the measured temperature in degrees C x 10. For example if the measured temperature is -5°C the transmitted data will be -50, and if the measured temperature is +10°C the transmitted data will be 100.

Is it compatible?
The PLC digital input does not need to be a high speed or counter type input. Any normal 24VDC digital input is suitable. The rate of data transmission is selected to allow non-time critical operation of the receiving PLC. The shortest pulse time is 100mS, so the PLC needs
to have a maximum scan time of 50mS. This is normally very easy to achieve. A small section of ladder program collects and interprets the pulses in sequence and loads a register with the measured temperature value. There is no particular limit to the number of TC-003 transmitters that can be used with a single PLC. It depends only on the number of inputs and program and data memory available.

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TWK-Inductive Linear Transducers

Inductive Linear Transducers for engineering and instrumentation.

The half-bridge technology for 1 to 360 mm stroke. The wide range of inductive linear transducers includes items with 10, 12 and 25 mm outside diameter and for measuring ranges from 1 to 360 mm. The smaller IW 10 and IW 120 series require external electronic modules for excitation and signal conditioning. IW 250 series with 25 mm housings have integral electronics consisting of oscillator, demodulater and amplifier. Analogue output signals are either 0(4) to 20 mA, 0 to 10 VDC or ± 10 VDC for full range or calibrated strokes. The transducers are completely potted to meet protection grades up to IP 68. Electrical connection is made either by leads, plug and socket or through cable glands. Various mechanical configurations are available to suit specific mounting conditions.

The IW 260 displacement transducers operate according to the new principle of fractional inductivity allotment within the hollow coil. Depending on the position of the core the inductivity changes within the corresponding coil section. This kind of layout provides for more position data than the classical half-bridge or LVDT configuration. An integral electronic circuit transforms these data into a signal proportional to the displacement of the plunger core.

The electronic circuit contains an oscillator, a demodulator, an amplifier and in some cases a current output source. Its SMD-design is short-circuit proof and protected against reverse polarity. The sensor system is completely sealed within a non-corrosive steel case to ensure positive protection against vibration, shock, humidity, oil and corrosive matter.

The new principle of fractional inductivity allotment as described above brings about an outstanding increase of the measuring stroke. In comparison to the IW 250 model the useful range of the IW 260 model increases by 70 to 100% based on the same length of the case.

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Dynapar S428A Digital Process Meter

The Dynapar S428A  is a new digital panel indicator providing a high contrast, high visibility display, designed for optimal ease of use in a wide variety of process measurement applications.

The S428A is fast, accurate and easy to read with a jumper-less configuration, plug in output boards and quick and easy setup.

The new generation S428A further provides a new user-selectable dual colour display option with fixed red or green displays or a green to red colour change when an alarm condition occurs.

In addition, plug-in modules allow PV retransmission or transmitter power supply and up to 5 alarm relays (latching or non-latching).

The S428A indicator is affordable, full featured, easy to use and compact with performance features that work for you to make temperature and process display simple.

The S428A digital indicator like its predecessor, the S428, remains an easy to use low cost solution for process display applications including temperature, pressure and force providing good visibility and high accuracy all within an affordable and ultra compact housing.

Application / function:
The Dynapar S428A digital indicator like its predecessor, the S428, remains an easy-to-use, low cost solution for indication and display within industrial process and temperature measurement applications providing high visibility and good accuracy in a compact size.

Industries:

  • Industrial and lab ovens/furnaces
  • Plastics and thermal forming
  • Packaging applications
  • And any other display of pressure, force, temperature or other process measurement especially where an out-of-range alarm condition is a requirement

Differentiate features:

  • New S428A is a highly improved direct replacement for previous S428 models
  • New 10V SSR driver output allows drive of up to
  • 3 typical SSR/SCR inputs
  • New plug-in output modules for SSR driver, Triac, relay and linear outputs easily field changeable
  • New latching alarms included as standard
  • New Jumperless configuration with self-recognition of option boards promotes simple, error free set-up
  • New multi-point scaling and tare features included as standard
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Rishabh-Passive Signal Isolator

RISH Ducer TI 816 (Single Channel Passive isolator)

Function:
The DC signal isolator serves to electrically isolate the analog DC signal in the range from 0(4)-20mA which depending on version is then converted to a current signal 0(4)-20mA or voltage signal 0(2)-10V It does not require a separate power supply, but derives the little auxiliary power it needs from the DC signal..

Features:

  • Electrically isolated analog DC signals 0-20mA- prevents the transfer of interference voltages and currents. Solves grounding problems in meshed signal networks.
  • No separate power supply needed/saves wiring costs and is easy to install in existing plants.
  • Snaps onto a DIN rail or screws onto a wall or panel – easily adaptable to the mounting facility at the place of installation
  • Insulation Level 3.7kV
  • Small and Compact: makes best use of available space.
  • Input: 0-20ma, Output: 0-20ma or 0-10vdc
  • Number of Input/Outputs: 1 x Input, 1 x Output

Block Diagram:


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