Stahl Frequency transmitter Frequency input

9146 series Ex i- frequency transmitters monitor the speed of rotating parts on one or two channels, e.g. the speed of fans or centrifuges. The frequency measured at the intrinsically safe input (between 0.001 Hz and 20 kHz) is issued as a unit signal (0/4 mA to 20 mA) or processed by a frequency divider. In single-channel devices, these frequency transmitters check whether speeds have exceeded or fallen below the limit values. Frequency transmitter, Ex i field circuit, explosion-protected, Type: 9146/10-11-12s, Number of channels: 1, Connection type: Screw terminal, Output per channel: 0/4 to 20 mA, LFD relay: Yes, Nominal current: 55 mA, Auxiliary power: 24 V DC, min. ambient temperature: -40 °C, max. ambient temperature: +70 °C, Max. voltage Uo: 10.5 V, Max. current Io: 23.4 mA, Max. power Po: 61.4 mW, Application range (zones): 2, Gas explosion protection:, II 3 (1) G Ex nA nC [ia Ga] IIC T4 Gc, Dust explosion protection: II (1) D [Ex ia Da] IIIC, For further inf