Dimensions, specifications and data shown in this catalogue are subject to change without notice. Consequently, they are not contractual in any case. Electrical, mechanical and endurance specifications are based upon in-house tests made by LANGIR. These tests are conducted using internationally recognised procedures. In the event of a product being used under different conditions, the user must ensure the product’s suitability for use under those conditions. Incorrect storage, handling, operation or application of the product may result in damage to the product or equipment. The negative value indicated under “Operating temperature” is given for normal usage conditions (products free of moisture, which could generate frost or ice and block the mechanism). The specifications give the technical performances of the switches. If the equipment on which our products are mounted is submitted to safety standards, the customer should select approved models or models conforming to the standards (marked CE only). Consult factory for details of models that can be marked CE.
Products are shown with their standard actuator (for other actuators, see options). Scale : drawings in this catalogue are to different scales : ask for a data sheet if you need other dimensions for a specific part number.
Unless otherwise specified, the general tolerance for dimensions in this catalogue is ± 0.3 (.012). Overall dimension tolerance is ± 0.5 (.020). Ask for a data sheet for further information.
Hand soldering with iron : 300°C, 3 seconds max.
Sealing of terminals:
Due to the new generations of active flux, epoxy sealing of terminals is preferred, to prevent any risk of switch contamination.
The RoHS directive 2002/95/EC of the European parliament and of the Council of 27 January 2003 restricts the use of certain harzardous substances in electrical and electronic equipment: Mercury (Hg), Cadmium (Cd), Hexavalent Chrome (Cr+6), Polybrominated biphenyls (PBB) and Polybrominated diphenyl ethers (PBDE), Lead (Pb).
- Standard products manufactured by LANGIR are already and will remain in compliance with the restriction of the marketing and use of the above mentioned substances imposed by such directive.
- Switches for printed circuit boards with tin/lead plated terminals (SnPb) have been replaced by components with pure tin plating.
- For specific options using LED illumination, wires are soldered with lead-free solder.
There is no change of part number for RoHS compliant products. Some specific products or options can still be supplied in non-RoHS version with customer’s agreement.
Degrees of protection : IP and IK codes
What is the IK impact resistance rating?
Initially related to the IP sealing test, the Ik rating became a specific rating to measure the impact resistance of product in 1995. It is now related to the EN 62-262 European standard. This rating can be decisive in a product selection. It doesn’t rate the mechanical life but the capacity of a product to face environmental aggressions. Therefore it is a key feature for any product intended for consumer goods.
- The IK impact resistance is rated through a specific test carried out with a “Charpy pendulum” impact tester.
- This device measures the resistance of a product submitted to 3 repeated identical impacts.
- The impact energy (in joules) depends on 2 elements:
- 1. The distance between the hammer and the tested sample
- 2. The hammer weight
According to the resistance level rated during the test, an IK code is assigned to the product. This code ranging from IK0 to IK10, determines the energy level the product can absorb.
|IK01||Protected against 0.14 joules impact. Equivalent to impact of 0.25kg mass dropped from 56mm above impacted surface.|
|IK02||Protected against 0.2 joules impact. Equivalent to impact of 0.25kg mass dropped from 80mm above impacted surface.|
|IK03||Protected against 0.35 joules impact. Equivalent to impact of 0.25kg mass dropped from 140mm above impacted surface.|
|IK04||Protected against 0.5 joules impact. Equivalent to impact of 0.25kg mass dropped from 200mm above impacted surface.|
|IK05||Protected against 0.7 joules impact. Equivalent to impact of 0.25kg mass dropped from 280mm above impacted surface.|
|IK06||Protected against 1 joules impact. Equivalent to impact of 0.25kg mass dropped from 400mm above impacted surface.|
|IK07||Protected against 2 joules impact. Equivalent to impact of 0.5kg mass dropped from 400mm above impacted surface.|
|IK08||Protected against 5 joules impact. Equivalent to impact of 1.7kg mass dropped from 300mm above impacted surface.|
|IK09||Protected against 10 joules impact. Equivalent to impact of 5kg mass dropped from 200mm above impacted surface.|
|IK10||Protected against 20 joules impact. Equivalent to impact of 5kg mass dropped from 400mm above impacted surface.|
LANGIR’s integrated test laboratory carries out IK impact resistance tests in accordance with the specifications of the EN62262 standard.
What is RoHS ? Do LANGIR switches comply with this standard?
The RoHS Directive stands for “the restriction of the use of certain hazardous substances in electrical and electronic equipment”. This Directive bans the placing on the EU market of new electrical and electronic equipment containing more than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants. All LANGIR switches comply with the RoHS requirements.
What is IP69K protection?
The goal of this test is to simulate pressure cleaning conditions on a plant floor. In the test fixture, the switches German standard DIN 40050-9 extends the IEC 60529 rating system with an IP69K rating for high-pressure, high-temperature wash-down applications. Such enclosures must not only be dust tight (IP6X), but also able to withstand high-pressure and steam cleaning. The test specifies a spray nozzle that is fed with 80°C water at 8–10 MPa (80–100 bar) and a flow rate of 14–16 L/min. The nozzle is held 10–15 cm from the tested device at angles of 0°, 30°, 60° and 90° for 30 s each. The test device sits on a turntable that rotates once every 12 s (5 rpm). The IP69K test specification was initially developed for road vehicles, especially those that need regular intensive cleaning (dump trucks, cement mixers, etc), but also finds use in other areas (e.g., food industry).
What is UL94-V0?
UL 94 is a plastics flammability standard released by Underwriters Laboratories of the USA. The standard classifies plastics according to how they burn in various orientations and thicknesses. From lowest (least flame-retardant) to highest (most flame-retardant), the classifications are:
- HB: slow burning on a horizontal specimen; burning rate < 76 mm/min for thickness < 3 mm.
- V2 burning stops within 30 seconds on a vertical specimen; drips of flaming particles are allowed.
- V1: burning stops within 30 seconds on a vertical specimen; no drips allowed.
- V0: burning stops within 10 seconds on a vertical specimen; no drips allowed.
- 5VB: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole.
- 5VA: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole.
How to supply LED of illuminated switches?
A resistor must be serial-connected to the LED. If the resistor is integrated into the product (L16, L19, L22 and L25 Series) you only have to supply the appropriate DC voltage. On the other series, a resistor has to be serial connected to the switch. LANGIR gives the LED forward voltage and the LED forward current in the series brochure (depending on the color, the brightness) to calculate the resistor value:
Resistor value = Supply voltage – LED forward voltage
What’s the stainless steel grade used on LANGIR products?
304 and 316L otherwise specified. The type 316 is the next most common; for food and surgical stainless steel uses; alloy addition of molybdenum prevents specific forms of corrosion. 316 steel is used in the handling of certain food and pharmaceutical products where it is often required in order to minimize metallic contamination. 316 steel is also known as “marine grade” stainless steel due to its increased ability to resist saltwater corrosion compared to type 303.