PR 4222

Never before has it been easier to convert temperature and analogue measurement signals to frequency signals

4222 is the latest addition to PR electronics’ PReasy series which can be configured in no time by way of the detachable display 4501. This converter accepts all commonly used industrial signal types and is ideally suited in any application where temperature signals and analogue measurement signals need to be converted to a frequency signal.

Front display 4501 guides, visualises and copies
When you are configuring the converter, there is no need to take out the manual. The detachable display 4501 comes with scrolling help texts in 7 freely selectable languages, thus guiding the user safely through all the configuration steps. All user options are selected by way of the front keys on the display and the user is completely independent of PCs, DIP switches and jumpers. Process data and unit status are shown in the display and the configuration can be copied quickly and easily from one 4222 to other 4222 modules.

An all-round converter
The input of the 4222 has been designed to accept V, mA, TC, RTD, potentiometer and linear resistance signals. The frequency output can be selected as NPN, PNP or TTL output and the span of the frequency signals is freely selectable in the range 0.001 Hz…25 kHz. Flexibility is the key word and this is also reflected in the universal supply which ranges from 21.6…253 VAC / 19.2…300 VDC irrespective of polarity.

Special functions
The display 4501 can also be used to calibrate the converter to suit all process input types. In addition to all this, it is, among many other things, also possible to perform process simulation and protect the chosen configuration with a password.

Safe signal conditioning
PReasy 4222 bears the mark of PR electronics’ strong focus on safety and efficiency. Our new converter features galvanic isolation of 2.3 kVAC between input, supply and frequency output. In case of a sensor error the user is alerted via the display and the frequency output. Furthermore, the 4222 performs an advanced auto-diagnostics and indicate the function status in the display or by way of the front LED. PReasy 4222 complies with NAMUR NE21 (Burst), the Low Voltage Directive (LVD) and UL 508.

In short: PReasy 4222 is the safe short cut from analogue to digital signals.

De nieuwe Display 5714

PR electronics introduces a new universal display for the industry
Electricians and process engineers will experience optimal configuration flexibility with the new and remarkable display from

PR electronics - PReview 5714
PReview 5714 is designed to show digital current, voltage signals, ohmic resistance and all temperature indications. The display is particularly suitable for applications in the following industries in which reliability and accurate indications are vital:
• Marine
• Water treatment
• Power heat
• Chemistry
• Energy supply

Scrolling help instructions
PReview 5714 is elegant, universal, reliable and not least user-friendly. A new feature is the scrolling help text that guides the user step by step, securing a simple and correct configuration by use of the front keys.
The dialogue between user and display is effected through the large 4-digit, 14-segment LED display. Contrary to ordinary 7-segment displays a 14-segment display can make use of the entire alphabet, whereby the visualisation of letters in the menu structure and thus the user

understanding are optimised. Apart from the digital indication of input values and alarm information 2 yellow front LEDs indicate the relay status.
The following display parameters can be configured:
• Input type
• Out signal
• Cable compensation in connection with Pt100 sensors
• Relay functions such as trip amplifier, sensor and cable error detection
• Position reading of valves, actuators and level sensors through potentiometer input

Great reliability ensures the process
The input, output and voltage supply of the PReview 5714 are highly protected. The current input is protected against excess current, the output is current-limited and the voltage supply is polarity protected. Moreover, the display tightness of IP65 safeguards the electronics in connection with e.g. cleaning. For more extreme environments and extended display protection a splash-proof cover is available as accessory. These protection features and the impressive usability minimise configuration errors and optimise the application efficiency. Naturally, the new display is backed by PR electronics’ 5-year product guarantee.

Universal and reasonable
PReview 5714 is available from stock in 4 variants, all with 24-250 VDC/AC universal voltages. The display can be implemented in many different applications and carry out various tasks due to its universality. Hence, the user will become increasingly familiar with the display and the costs in connection with stock control and purchase will decrease. Furthermore, the PReview 5714 can be used worldwide as it complies with the UL (USA), DNV (marine) as well as the strictest European standards. Consequently, the PReview 5714 is a unique display with many features and advantages at a very competitive price.