Electronic airflow monitor WSERD-XXX.446
NEW
Technical data
Application
Rated voltage:
100-240V AC oder 24V ±10% AC/DC
The airflow monitor WSERD works in line with the calorimetric measuring principle where the amount of heat removed by the airflow is measured and converted into the switching value. In order to do this, the sensor contains a heating element and two tempe- rature sensors.
Rated consumption:
< 3 VA
Contact:
2 two-way contacts, potential-free
Switching voltage: Switching current: Electric connection: Protection class: Type of protection:
max. 250 VAC
max. 8 A
2.5 mm² (sensor 1.0 mm²), screw terminals
2
IP65 housing/IP54 sensor, EN 60529
Setting range: Working range:
0.2…10 m/s flow speed 0.8…10 m/s flow speed
The measurement system comprises the sensor and
control unit. The measurement system is available in two diffe- rent designs: for wall mounting (WSERD-134.446) and duct mounting (WSERD-534.446).
Start delay:
15 … 120 seconds
Ambient temperature range: Transport and storage temperature: Relative air humidity:
housing 0 … +50 °C / sensor -20 … +90 °C
-10 … +75 °C
< 95 %
Condensation:
permitted (outside only)
Overvoltage category (control unit): Rated impulse voltage:
2
4000 V
Degree of contamination: 2 Material:
Housing cover polycarbonate, housing base ABS, sensor cable PVC, cable screw connection PA6, sensor housing aluminium with polyamide PA6
The device complies with the following requirements: • 2014/30/EU EMC directive • 2014/35/EU Low Voltage Directive • EN 61326-1:2013 General EMC requirements • EN 61326-2-3:2013 Immunity for residential, commercial and light-industrial environments • DIN EN 60947-5-1 Low-voltage switchgear and controlgear • EN 50581:2012 Restriction of hazardous substances
Mounting: The device is mounted on a level base using suitable screws (WSERD-134.446; not included in scope of delivery) or mounted on the duct using the mounting flange included in scope of delivery (WSERD-534.446).
Type
Item no.
Features
PG
WSERD-134.446
G8000428
for wall mounting
III
WSERD-534.446
G8000429
for duct mounting
III
WSERD-134.446 for wall mounting
WSERD-534.446 for duct mounting
Catalogue 2022 | Page 194
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