Operating instructions NLSW®45-3 SIL1 1. SAFETY INSTRUCTIONS Read the product description before using the device. M a k e s u r e that the product is fully suitable for your application. Incorrect or improper use can lead to malfunctions of the device or to undesirable effects on your application.
Operating instructions NLSW®45-3 SIL1 3. TECHNICAL DATA Type NLSW®45-3 SIL1 Operating voltage 24 V AC/DC 230 V AC 50/60 Hz Article no. 77029SIL1 63377SIL1 Voltage tolerance ± 5% ± 6% Overvoltage category Signal display voltage Green LED Power consumption max. 3 VA 4.5 VA Ambient temperature Device...
Operating instructions NLSW®45-3 SIL1 4. INSTALLATION AND COMMISSIONING Installation and commissioning must be carried out by authorized and qualified personnel. The connection to the main supply (L, N) must be made via a protected circuit breaker with standard fuses. The general VDE regulations must always be observed (VDE 0100, VDE 0113, VDE 0160). If the potential-free contact is connected to a safety extra-low voltage, the connecting cables must be sufficiently insulated up to the terminal, as otherwise the double insulation to the mains voltage side may be impaired.
Operating instructions NLSW®45-3 SIL1 4.3 Setting the switching point The relationship between air velocity and change in resistance is not linear. In the lower range (small flows), the change in resistance is very large. In the upper range, the change in resistance is always smaller for the same flow changes.
Operating instructions NLSW®45-3 SIL1 5. MAINTENANCE INSTRUCTIONS The air flow sensor should be serviced at regular intervals, i.e. the air flow sensor should be cleaned when used in heavily contaminated media. The following procedure is recommended: Dismantling the air flow sensor ▪...
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