Brotek Smart Vibrating tuning fork Level switch available with inbuilt programming display to set switching point against Piezoelectric crystal frequency, fork body is excited by a piezoelectric crystal, so that the fork body is in a resonance state. When the fork contacts the material, the resonance frequency will change significantly. The internal electronic unit detects the frequency of the fork body and after processing, converts it into a relay or a PNP switch output.
Vibrating tuning fork level switch technical detail
Power supply voltage : 12 ~ 30VDC / 110 ~ 220VAC (only for relay output type)
Output :Relay DPDT 8A 250VAC / PNP output: 50mA, 24V / Frequency output: 0 ~ 2000Hz (24V)
Working temperature of medium :Short fork body: -30 ? 150 ?, Long fork body: -30 ~ 250 ?
Density range :Liquid ≥600 kg / m3, solid powder: ≥100 kg / m3
Liquid viscosity : 0.2 ? 10000cp
Switching delay : adjustable from 0 to 30 seconds
Switch mode : upper or lower limit alarm (user set)
Hysteresis (water) : ± 1mm
Maximum operating pressure : ≤1Mpa
Connection method : Thread: 3/4 "NPT /Thread: G1 / 2/Flange (user specified)/
Sanitary fittings: Accessories: 2 ”(51mm) Tri-Clamp connector/ 1” BSPP (G) O-ring seal material
Enclosure Material : die-cast aluminum alloy ( IP 66) ( EX d II CT6)
Fork body material : 316 stainless steel / 316 stainless steel, Teflon surface
Fork body vibration frequency : Short fork body: 1400 ± 50HZ / Long fork body: 330 ± 50HZ
Environmental vibration level : acceleration is not greater than 1g