(2) Type LWF-P-2 pulse output pre-amplifier is a preamplifier featuring strong load capacity and adaptability of power supply source,
and it may provide reliable pulse signals to PLC.
For wiring connection, please see Figure 8-1, in which +12VDC is modified to +24VDC.
Power supply source: VDD is the nominal value24VDC
Output signal: square wave
High level：Power supply voltage VDD-3VDC
(3)Type LWF-P-3 pulse output preamplifier is a preamplifier designed for high temperature conditions of materials and structures of the detector parts on the basis of Type LWF-P-2 amplifier. Under the precondition that the ambient temperature is not higher than 55℃, the medium temperature may come up to 150℃.
Type LWF-(I)-1 preamplifier output 4~20mA current analog signals, three-wire system. Before leaving the factory, each amplifier has been calibrated together with associated turbine flow meter. In order to ensure the accuracy, mixed use is not allowed.
0 Operating power supply：VDD=+11~26VDC
0 Output signal: current output I=4~20mA
Intrinsic error :±0.5% full scale value
Operating condition: ambient temperature：-25～+55℃；
Relative humidity> 85%RH
Installation: Installed on the body of flow meter
through M16X1 thread and slightly locked with locknuts.
Figure 8-2 Wiring Connetions
Diagram of Type LWF-I-1
Wiring connections: as per Figure 8-2 Wiring connections Diagram of Type LWF-I-1 Pre-amplifier Figure 8-2 Connection Diagram of Type LWF-I-1 Amplifier
Note: The thick black line is used to shield outside interference and must be earthed!