Carrier-Frequency Pulse Amplifiers (VTE*Ex)
Carrier-frequency pulse amplifiers for all KEM flow meters.
Specifications:
- Supply voltage: UB: +8 up to 29 VDC
- Quiescent current: IR < 4 mA
- Frequency range: 3 up to 3,000 Hz according to flow meter
- Ambient temperature: –20 up to +50°C
- Fluid temperature: max. +150°C
- Output signal: frequency output (various modes)
- Ex-protection: EX II 2 G EEx ia IIC T6
The integral carrier-frequency pickup of the VTE detects the r.p.m. of KEM flow meters. During this process the damping of a carrier-oscillator by the gears or blades is picked up through the meters body and evaluated.
The frequency of the resultant amplitude modulation of the carrier is equal to the number of revolutions of the wheel and therefore a standard for the flow rate.
Here you can find our Evaluation Electronics.
