Digital panel meter, message display, production line monitor and large display manufacturer
  • Multi channel display, with data logging and network connection
  • 1/8 DIN digital panel meters for measuring and controlling most physical variables
  • Loop powered 1/8 DIN digital panel meters
  • Analogue AC and DC panel meters
  • Miniature programmable digital panel meters for AC and DC measurements
  • Fully sealed industrial large digit displays
  • Industrial clocks with automatic summer and winter correction, synchronisation to atomic standards
  • Custom made large displays, in this case an outdoor temperature display for a holiday resort
  • Custom made event count down displays
  • Combined temperature and humidity displays for industrial environmental monitoring
  • Customised large bargraphs built to suit your specifications
  • Multi-colour panel mounting programmable bargraphs
  • 1/8 DIN bargraph
  • Large format sealed bargraph
  • Multi-colour miniature panel mounting programmable bargraphs
  • Custom made message displays for production line monitoring
  • Custom made and standard message displays for production line monitoring
  • Custom made and standard message displays for production line monitoring
  • Custom made and standard message displays for production line monitoring
  • Custom made and standard message displays for production line monitoring
  • Triple 4-20mA loop splitter
  • Portable carrying case for laboratory or general test use. 1 to 12 panel meter capacity
  • Network enabled power monitor and data logger
  • Generator synchro display and controller
  • IP67 splash proof cover for 1/8 DIN panel meters
Panel Meters Large Displays Bargraphs Message Displays Others
Thorncote Road, Near Sandy, Bedfordshire SG19 1PU Tel Fax +44(0)1767 626444 sales@london-electronics.com
 
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IP Ratings and NEMA protection

Ingress Protection (IP) ratings (described in IEC 60529) specify the environmental protection an enclosure provides.

The IP rating normally has two numbers.

The first number specifies the protection from solid objects or materials.

The second number specifies the protection from liquids.

IP Protection Number Summary

FIRST NUMBER - Protection against solid objects

0 = No protection

1 = Protected against solid objects up to 50mm e.g. accidental hand contact

2 = Protected against solid objects up to 12mm e.g. fingers

3 = Protected against solid objects up to 2.5mm (tools and wires)

4 = Protected against solid objects up to 1mm (small tools and wires)

5 = Protected against dust, limited ingress (no harmful deposit)

6 = Totally protected against dust.

SECOND NUMBER - Liquid protection

0 = No protection

1 = Protection against vertically falling drops of water e.g. condensation

2 = Protection against direct sprays of water up to 15 degrees from vertical

3 = Protection against direct sprays of water up to 60 degrees from vertical

4 = Protection against water sprayed from all directions - limited ingress permitted

5 = Protected against low-pressure jets of water from all directions - limited ingress permitted.

6 = Protected against low pressure jets of water (such as use on ship decks) - limited ingress permitted.

7 = Protected against the effect of immersion between 15cm and 1m.

8 = Protected against long periods of immersion under pressure

So IP65 means the enclosure protects against dust and low pressure water jets sprayed from all directions. It does allow some water to enter the enclosure, provided the amount is not harmful to the equipment inside.

THIRD NUMBER (often omitted) - Impact protection

0 = No protection

1 = Protection against 150g falling from 15cm height (0.225 Joules)

2 = Protection against 250g falling from 15cm height (0.375 Joules)

3 = Protection against 250g falling from 20cm height (0.5 Joules)

4 = Protection against 500g falling from 40cm height (2.0 Joules)

5 = Protected against 1500g falling from 40cm height (6.0 Joules)

6 = Protected against 5kg falling from 40cm height (20.0 Joules)

NEMA comparisons

The NEMA rating system can be compared to the IP system. The most common NEMA ratings are:-

NEMA 1 Similar to IP30. Protects against limited amounts of falling dirt in indoor installations.

NEMA 2 Similar to IP55. Protects against circulating dust, falling dirt and dripping non-corrosive liquids in indoor installations.

NEMA 13 Similar to IP65. Protects against dust, sprayed water, oil and non corrosive coolants in indoor installations.

NEMA 4 Similar to IP65. Protects against wind-blown dust and rain, splashing water, hose-directed water and damage from external ice formation in indoor and outdoor installations.

NEMA 4X Similar to NEMA4 but also protects against corrosion

NEMA 6 Similar to IP67




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