Neminath Instruments Neminath Instruments

Neminath Instruments

Tar Viscometer

Tar viscometer measures viscosity of tar by timing its flow through a standard orifice at controlled temperature, indicating fluidity and handling properties.

Tar Viscometer

Model Number : NI-VT-101
Compliance Standard : IP 72, IS 1206- Part 1

Description :-  The Instrument is used to determine Viscosity of cutback Bitumen and road oil. The waterbath is made of S.S. 304, having orifice of 10mm and sleeve, stirrer with lifting clip and ball. The orifice cup is heated through waterbath and temp is controlled through energy regulator. The temp range of instrument is from ambient upto 95°C. The stirring is done manually to determine Viscosity at required temp. Outlet Valve is provided through which the water filled inside the bath is removed after completion of test.

Temperature range Ambient +5°C upto 100°C 
Suitable for Method A 10 +/- 0.025mm orifice diameter cup for road tar
Suitable for Method B  4 +/-0.025 mm orifice diameter cup for cutback bitumen
Height of orifice 5 +/- 0.025 mm 
Test-cup  Made from hard brass tube with external collar at upper end
Waterbath  Made from stainless steel cylindrical in shape electrically heated
Stirrer  Made from stainless steel with 4 vertical vanes with easy sliding fit. 
Receiver 100 ml graduated measuring cylinder made from Borosilicate glass.
Thermometer -10°C to +110°C temp. range for determination of sample temperature. 
Instrument Weight 7-8 Kgs [15-20Lbs]
Shiiping Weight  15-20 Kgs [35-40 Lbs]

Instrument is supplied with the following : 

  1. Tar Viscometer – Main Unit = 1 Nos
  2. 4mm orifice or 10mm orifice =  1 Nos
  3. Thermometer = -10°C to +110°C = 1 Nos

Optional accessories (At extra cost) 

  1. 4mm /10mm orifice jet
  2. Glass Thermometer = -10°C to +110°C
  3. Digital Thermometer
  4. Digital stopwatch
  5. NABL Calibration test certificate

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