Over- head level Magnetic roller indicators ， Type UML721

• Measuring length max. 4000mm
• Pressure: max. /150 Bar
• Temperature: max. 120°C
• Viscosity: max. 200 mm²/s
• Connection DIN flange DN 50/65 ANSI flange 2” 2 1/2
• Material: stainless steel
• Roller indication
• Limit switch
• Analogue output

Description
Geofisth over head level Magnetic roller indicators are used for continuous measurement display and monitoring of liquid levels. The float inside the tank is attached by means of a connecting rod to the magnet carrier in the over-head tube. The magnet fitted in the magnet carrier operates in a non- contacting manner the display and monitoring devices fitted outside tube

Magnetic roller indicator

As the float passes by the red/white rollers are rotated in succession by 180°around their own axes. The rollers change from white to red as the level rises and from red to white as the levelfalls. The level in a tank or a mixer is continuously displayed as a red column even when the power fails

Transmitter

To remotely transmit the level a transmitter with a chain of resistors or a magnetostrictive transducer can be mounted outside the bypass tube. A continuous standard signal of 4 to 20 mA is generated by means of a fitted transmitter . this standard signal can then be displayed with analogue or digital indicating deices

Limit contacts

One or more reed contacts for limit value acquisitiom or also for level control can be secured to the bypass tupe
Applications

• Storage tanks
• Mixing vessels
• Aggressive media
• Water tanks

Technical details
Over-head tube: Ǿ45-60x2 mm
Tank tube: Ǿ60x2 mm or 75x2mm
Initial measurement: 270mm from tube end
Material: st. steel
Float: titanium
Connecting rod: depending on medium density and measuring length
operating pressure: PN16
operating temperature: to 120°C
viscosity: max. 200mm²/s
measuring length: min.600mm
max.4000mm
Total length: depending on meas. Length, see dimension with polypropylene rollers
Limit contacts
Contact operation: bistable changeover contact
Switching hysteresis: approximately 15 mm
Housing polycarbonate
Protection IP67
Max. switch capacity: 60 W/VA 230VAC/DC 1A 80VA 220V 1A
Electrical connection: 3m PVC cable connection
Ambient temperature: : 75°C
Protection IP67 / IP65
Transmitter type:A
Principle of Measurement: magnet obstructive with transducer
Supply voltage: 24 VDC max. 150 mA
Output: 4-20mA 2-wire
Load: max.500Ω
Accuracy: ±1mm or 5mm
Max. length: 4000mm
temperature: max. 120°C
temperature: max. 80°C
Protection IP65
Transmitter type: B
Principle of Measurement: reed contact chain of resistors Total resistance: approximately 5 kΩ
Output: 4-20mA 2-wiret
Supply voltage: 16-32VDC Measuring current: max. 0.1A
Medium temperature: max. 120°C
Ambient temperature: max. 130°C
Resolution: 5mm(ML<2000mm)
10mm(ML≥2000mm)
Protection IP65

CSA Approved
• Includes Stainless Steel Mounting Clamp
• Polysulfone Housing
• Withstands Temperatures to 300°F (148.9°C)
• Connection: 1/4˝ FNPT

Withstands Temperatures of 750°F (399°C)
• 316 Stainless Steel Construction
• 1/2˝ MNPT Conn.
• Includes Stainless Steel Mounting Clam

UL, CSA, FM Approved
• Withstands Temperatures of 750°F (399°C)
• J-Box Terminated
• Stainless Steel Construction
• Includes Stainless Steel Mounting Clamp