Product Brief - Model C2403B Omniterm THZ Freqency Input Tx

Omniterm THZ Freqency Input Tx

picarrow Convert Pulse frequency to analogue signal
arrow 0 to 20mA/0 to +-10V/0-+-10mA/0-10,000 pulses per hour
arrow 24Vdc powered
arrow Three Port Isolation
arrow Fully Software configurable by the User
arrow Output Overload Detection
arrow Accepts Contacts, "NPN", "PNP" and Namur Type Proximity Switches
arrow Certified to IEC61508 SIL1 Safety Standard

The OMNITERM THZ programmable four-wire Frequency Transmitter accepts a periodic or pulse wave-form signal such as from a proximity detector used to detect rotational speed, and provides an analogue or pulse train output signal relative to frequency.


The OMNITERM THZ four-wire Frequency Transmitter accepts a periodic or pulse wave-form signal such as from a proximity detector used to detect rotational speed, and provides a analogue output signal relative to frequency. This module uses advanced state-of-the-art digital measurement techniques, combined with extremely user friendly software configurability for best ease of use without factory required setup when ordering.

The input will accommodate pulses from dry contacts, open collector transistor outputs (NPN or PNP) and Namur standard 'N' type proximity sensors.

The output can be configured for unipolar or bipolar outputs of current or voltage from ±1mA to ±10mA; 0-20mA; or ±1V to ±10V, as well as pulse outputs for totaliser and frequency translation applications.

Full isolation (input/output/power supply) to 1500Vac ensures trouble-free accurate measurement.


The OMNITERM THZ provides extremely low life-cycle costs by reducing spares stock-holding requirements, and reducing specialist technical expertise required for field support, module replacement and field configuration. This new holistic approach to instrumentation asset management ensures reliable performance and minimal down-time.

Using advanced digital filtering techniques, the THZ offers up to one hundredth of a Hertz resolution combined with fast response to changing signal frequencies.


The powerful but intuitive configuration software ensures the maximum instrument flexibility with reliable configuration management to ensure all instruments on the plant are always correctly configured to the design requirements specification.


This product has been designed with high reliability applications in mind. The output stage has built-in overload indication to detect overloaded output circuits - eg. from a wire break or excess resistance when configured as a current loop, or too low a load resistance when configured as a voltage output.

This product has been certified to IEC61508 SIL1 safety standard and has undergone Emphasis Assessment for use in the UK Nuclear Industry





Contact Omniflex, and try one. You will never see signal conditioning the same again.

Further Literature 
Full specifications and Order Information
Omniterm B Shortform Brochure
Overview of the Omniterm B series Products
SIL1 Information
SIL1 Reliability Data
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