Mahalaxmi make level transmitter works on the principle of reed resistance/permanent magnet basis. Reedswitches function like the center arm (as shown in fig. 1) of a potentiometer. As per liquid level float moves up or down, magnet inside the float operates the reedswitches thereby causing a change in resistance value. Change in the resistance is measured by the electronics unit and conditioned as a current output of 4 to 20 mA. Signal conditioner is head mounted and of 2-wire loop powered suitable for 12 to 24 VDC giving output of 4 to 20 mA.
Model (VMT-04-F65-AW) , (VMT-04-F92-AW) top mounted magnetic reed/resistance cascade type loop powered 2 wire level transmitter. Process Connection flange 78 or 120 mm diameter with 4 bolt holes of 6mm or 14 mm dia on 65 or 92 mm PCD respectively. Wetted parts flange & float stopper in SS 304. Float material SS 316L and diameter 41, 53 or 68 mm. Operating pressure 10kg/sq.cm and Temperature 125 deg.C. maximum.
|Specific Gravity||Suitable Down to 0.7 (Upto 0.5 optional)|
|Range||0-150 mm upto 0-3000 mm.|
|Resolution||Betterthan ±10 mm.|
|Span Suppression||Max. 25% of Span|
|Zero Elevation||Max. 25% of Span|
|Excitation Voltage||12 - 36 V DC|
|Loop Resistance||Max. 600 OHMs.|