4-20mA, 0-10V process input bargraph displays

Display almost any physical variable...
The bargraph displays on this page accept most common process signals such as 4-20mA, 0-10V, 1-5V etc. All can be scaled to read in your preferred engineering units.

Most have a 24V excitation output voltage which you can use to power a 2 wire or 3 wire input loop.

Suited for these applications and more:-

• Level measurement - use a depth or level sensor
• Pressure measurement - use a pressure transmitter sensor
• Tank contents display - use a level sensor
• Temperature measurement - use a temperature transmitter
• Humidity measurement - use a humidity transmitter
• Any physical variable having a 4-20mA or 0-10V signal

New: Ex nR Atex Displays

For hazardous areas we can offer the following explosion proof options on most models. Tell us what you need and we will be pleased to quote for Atex certified systems

• Zone 1 ii 2 G Ex px iiC T6/T5/T4 Gb *
• Zone 2 ii 3 G Ex nR iiC T6/T5/T4 Gc **
• EXD Zone 2 on request - POA

* - Requires pressurised air system
** - any product



The London Electronics ATEX certified products are supplied certified for use in the condition in which they are supplied. No liability will be assumed for any loss or damages of any nature, direct or indirect, including any loss of profits or consequential damages, injury or death suffered or incurred by the buyer as a consequence of failure to install, use and/or apply the product within the scope of the installation document and certification supplied.

Model BAR-A and BAR-X
The BAR-X and BAR-A are user friendly programmable process bargraph displays. The BAR-A is for display only, the BAR-X includes 2 alarm relays. They can mount either vertically or horizontally and are unique in their ease of setup - programmable, but without menus! A fully customisable scale sheet fits behind the protective front window, to allow you to read off the value in your own engineering units.
Input connections	Current input, Voltage input, Excitation Suits direct connection, 2 wire active or passive loop and 3 wire transmitter systems.
Input Signals	Current input terminal accepts:- 0-10mA, 0-20mA, 4-20mA 33 Ohm input resistance Voltage input terminal accepts:- 0-5V, 1-5V, 0-10V 1 Megohm input resistance.
Excitation	24V DC up to 100mA (5V, 10V and 12V optional)
Display	75mm long bargraph with 30 segments. You can select either moving dot or progressive bargraph formats.
Digit colour	Red or green.
Scaling	Digital menu-free system.
Filtering	Adjustable FAST or SLOW response
Front panel controls	Calibration, Alarms.
Power	11-30VDC or 95-265 VAC
Accuracy	+/-3% of range
Thermal stability - range	+/- 100ppm/oC
Thermal stability - offset	+/- 100ppm/oC
Analogue output	Not available on this model
Alarm output	2 Alarms rated 5A 250VAC SPDT Available on the BAR-X only. Pump-control action included as standard.
Serial data output	Not available on this model
Bezel size	96mm wide x 48mm high. 13mm forward.
Panel cutout	92mm wide x 45mm high. +1mm, -0mm
Depth behind panel	125mm including connectors + cable.
Sealing	IP54 standard, IP67 with optional SPC4 cover
See operating Manual
See datasheet

Datasheet

Manual for NA3

Manual for NA5

Manual for NA6

[^] PRO-BAR large bargraph display
The PRO-BAR is a large display-only format process bargraph display with 250mm scale length. They can mount either vertically or horizontally. A fully customisable scale sheet fits behind the protective front window, to allow you to read off the value in your own engineering units.
Input connections	Current input, Voltage input, Excitation Suits direct connection, 2 wire active or passive loop and 3 wire transmitter systems.
Input Signals	Current input terminal accepts:- 0-10mA, 0-20mA, 4-20mA 33 Ohm input resistance Voltage input terminal accepts:- 0-5V, 1-5V, 0-10V 1 Megohm input resistance.
Excitation	24V DC up to 100mA (5V, 10V and 12V optional)
Display	250mm long bargraph with 50 segments.
Digit colour	Red or green.
Scaling	Zero and Span potentiometers
Power	95-265V AC / 11-30V DC
Accuracy	+/-0.5% of range
Thermal stability - range	+/- 100ppm/oC
Thermal stability - offset	+/- 100ppm/oC
Analogue output	Not available on this model
Bezel size (wall mtg)	95mm wide x 310mm high
Bezel size (panel mtg)	111mm wide x 326mm high
Panel cutout (if you plan to panel mount the bargraph)	96mm wide x 311mm high. +1mm, -0mm
Depth	110mm including cable.
Sealing	IP65 all round
Operating manual
Data Sheet