502 series universal RF admittance level switch make of sensor probe, electrical measurement and control unit, protection shell. The switch meter is complied with RF admittance measurement rule to measure point level, widely used to control the limit level and alarm automatically in power generated, petroleum, chemical, petrochemical, metallurgy, food, pharmacy, etc..
Strong universality：measuring liquid or material level, meeting different requirements in temperature, pressure, medium. Maximum temperature can be 815℃，pressure can be 28MPa, and can be applied to many fields such as corrosive, strong impact environment and so on.
Maintain free：elements aren’t movable during the measurement process and mechanical part damaging shouldn’t occur.
Anti-jam: contacting measurement, strong ability to be anti-jam to challenge the effect of steam, foam, and mixing.
Typical applications
Conducting and non conducting liquid: chemical, petroleum, wastewater treatment
Conducting and non conducting slurry: paper plant, pharmacy, wastewater treatment
Grain, powder, ashes: metallurgy, coal mine, power generated, cement
Technology performance
Output: DPDT relay, double - pole, single - throw switch
Container of contacting point: 240VAC/2A non-inductance; 120VAC/5A non-inductance
Power supply: 240V±50VAC， 50/60Hz(optional)
15~30VDC(optional), maximum value is 5W
Environment temperature: -40℃~62℃
Medium temperature: -80℃~200℃, maximum value is 815℃ (optional)
Response time: 0.2s(standard); 0~90s adjustable(optional)
Electrostatic protection: standard 10A for sensor, for protection circuit is 100A
Resolution: 0.3pF or less
Repeatability: 〈1mm (0.04″) for inductive material
〈20mm (0.79″) for insulating material
Alarm: HLFS (higher level alarm) or LIFS (lower level alarm) can be set
Electrical port: 3/4″NPT
Cable: the exclusive cable standard between split type electronic unit and sensor is 5m, maximum length is 50m.
Process connection: 3/4″NPT screw(standard), flange mounting is optional
Outer shell: protection standard complies with NEMA1-5, 4X, and 12&13(IP65)，explosion proof complies with zone 1, zone 2 requirement.
Explosion proof: the grade of explosion proof zone: cable and sensor element meet intrinsic safe grade for all groups in zone 1 and zone 2; circuit units powered by intrinsic safe power meet intrinsic safe grade for all groups in zone 1 and zone 2; circuit in explosive shell meets intrinsic safe grade for all groups in zone 1 and zone 2.
