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Immersion-Type Process Viscometer PV100-TM06B(250)
     
     
 
     

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    The process viscometer PV100-TM06(250) works on the principle of a rotational
 
    viscometer with cylinder measuring unit.  
       
    Its basic components are a measuring head and a continuous-flow measuring unit  
    connected by a flange sleeve. The measuring head holds the drive unit, which is either a  
    controllable d.c. motor or a synchronous motor, as well as the torque sensor und the  
    electronics producing the measuring signal.  
       
    The rotation is transmitted directly from the measuring head to the measuring bob, which is  
    screwed into the measuring shaft. The measuring shaft is held in the flange sleeve in low-  
    friction bearings.  
       
    The measuring bob rotates freely in the measured substance. To maintain the correctness  
    of the displayed viscosity values, the diameter of the process vessel must be large in  
    relation to the diameter of the measuring bob (10 times minimum).  
       
    To prevent a contamination of the measuring shaft bearings, a gas counter flow is led from  
    the measuring head towards the measuring bob. The gas counterpressure to be applied  
    through a threaded fitting in the flange sleeve must always be slightly higher than the  
    process pressure.  
       
    The viscosity-proportional torque occurring on the measuring bob is measured in the  
    measuring head and converted into an electric standard current signal 4...20 mA, which
 
    can be used for display and as a control signal.  
       
    The immersion measuring device is designed for use with open and closed vessels with  
    low operating pressures. The immersion depth is determined by the length of the  
    measuring bob.  
       
    The process viscometer can be completed with an electronic unit for more functions of  
    instrument control, signal processing, as well as temperature adjustment of viscosity.  
       
       
 

Recommended Applications

 
    The process viscometer PV100-TM06(250) is suited for continuous viscosity measurement in a wide variety of substances, such as  
   
  • suspensions    		  
       
  • diary products    		  
       
  • lacquers or varnishes    		  
       
  • printing inks    		  
       
  • emulsion paints    		  
       
  • lubricants    		  
       
  • latex    		  
       
  • polymer solutions    		  
       
  • coal suspensions    		  
       
  • glues or adhesives     		 
       
  • resins     		 
       
  • coating slips     		 
       
  • chocolate suspensions     		 
       
  • sealing compounds     		 
       
  • fruit mash or preparations    		  
       
  • vegetable mash     		 
       
  • coating colours     		 
       
  • cosmetics     		 
       
  • solutions     		 
       
  • emulsions     		 
       
  • mud    		  
        The rheology consultants of RheoTec will be pleased to help you analysing your specific application probleme, and, based on their profound rheological knowledge, they will find exactly the equipment configuration you need to solve it.  
           
      Technical data  
       
    Measuring Head MH10 MH16 MH16G
    viscosity range
    [mPas]     		30 to 1.6*10 5 60 to 3.5*10 5 6*10 3 to 3.5*10 7
    speed range [rpm]
    (8 adjustable steps)     		1 to 250 1 to 250 0.01 to 2.5
    in connection
    with spindle     		ZP20 ZP21 ZP21
    shear rate range
    [s -1 ]     		0.208 to 52 0.201 to 51.8 2.07*10 -3 to 0.518
    shear stress range
    [Pa]     		1.6 to 33.3 3.1 to 70.35 3.1 to 70.35
    accuracy 2.5 %
    pressure range up to 6 bar (by gas counter pressure)
    temperature range -30 °C to +150 °C
    mechanical connections flange connection DN80; PN06
    threaded fitting M10x1 for gas counter pressure
    immersion depth 250 mm
    materials for components that are exposed to the measured substance 1.4571 (DIN 17440)
    explosion protection II 2G EEx de IIB T6
    (according to ATEX standard)
    protection class IP54
    climatic conditions -25/55/30/90//42 (S0 2 )1-3
    installation position max. 30° deviation from vertical
    (or overhead operation)
    power supply motor:
    24 V DC, 500 mA
    signal circuit:
    24 V DC, 20 mA
    (supplied from an external source or by PV100 control unit VC1)
    measuring signal 4...20 mA to R a ≤ 350 Ohm analogous, digital via RS485 interface
    		 
           
      Optional  
        1. PV100 control unit VC1  
       
    		 
       
    PV100 control unit VC1
    		 
        operations:  
       
  • supply of voltages 24 V DC for motor, signal circuit and temperature sensor    		  
       
  • setting of viscosity range, speed step, limit value monitoring    		  
       
  • measuring signal 4... 20 mA analog or digital via interface RS485 for viscosity and   temperature    		  
       
  • data output on display (viscosity, measuring range, temperature, shear rate, shear   stress)    		  
       
  • temperature correction of viscosity based on a fixed viscosity-temperature-equation   regarding a wide temperature range, display and output of reference viscosities    		  
       
  • automatic range search run, overload protection    		  
        The process viscometer electronics is available as plug-in rack in 19" systemes for one or two viscometers, or as splash-proof surface-type casing.  
           
        power supply : 90 to 253 V AC, 50/60 Hz  
        protection : IP20 (rack)
    		 
                    IP54 (surface-type casing)  
        2. Temperature sensor Pt100  
       
  • optional delivered with transducer    		  
       
  • 4 temperature ranges: -30°C to +60°C, 0°C to +100°C, 0°C to +200°C, 0°C to +500°C     		 
           
        3. Cooling unit KL  
        for reduction of heat conduction from probe to measuring head