Level limit switch
Series MN 4000
Technical Information / Instruction manual
page
Technical data
Operating conditions
Ambient temp. (housing) -40°C .. +60°C (-40 .. +140°F)
Process temperature -40°C .. +150°C (-40 .. +302°F)
For versions with Ex-approvals: see remarks on page 21.
Ventilation Ventilation is not required
Min. powder density Setting Min. powder density (ca.)
I 20 g/l (1.25 lb/ft3)
II 80 g/l (5 lb/ft3)
III 150 g/l (9.4 lb/ft3)
IV 300 g/l (18.7 lb/ft3)
Features of bulk material No strong tendency to cake or deposit
Max. mechanical load 400 N (@40°C, 104°F) laterally (on oscillator rod)
Recommended protection in case of high material load: mounting of an protective angle above the
probe
Max. mechanical torque MN 4030: 180 Nm (@40°C, 104°F)
MN 4040: 100 Nm (@40°C, 104°F)
Max. process pressure 16 bar (232 psi)
For versions with “sliding sleeve without process overpressure” (option pos.25 a,b,c): unpressurized.
The max. process pressure may be reduced with use of anges. Observe ange standards for
pressure rating and pressure derating with higher temperature.
For versions with Ex-approvals: see remarks on page 19.
Vibration 1.5 (m/s2)2/Hz according to EN 60068-2-64
Relative Humidity 0 - 100%, suitable for outdoor use
Altitude max. 2,000 m (6,562 ft)
Expected product lifetime Following parameters have a negative inuence on the expected product lifetime:
High ambient- and process temperature, corrosive environment, high vibration, high ow rate of
abrassive bulk material passing the sensor element.
Tolerance length "L" ±10 mm (±0.39")
Oscillator Material: stainless steel 1.4404 (316L) (food grade)
Sound level max. 50 dBA
Overall weight (ca.) MN 4020: 1.3 kg (2.9 lbs)
MN 4030: 1.3 kg (2.9 lbs) +1.3 kg/m (+2.9 lbs per 39.3") extension
MN 4040: 1.8 kg (4.0 lbs) +1.3 kg/m (+2.9 lbs per 39.3") extension
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MN 4000 c
gi010817
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