National Weighing and Instruments provide specialised sales, Calibration and service on:

  • Analytical & precision balances & scales

  • Platform scales

  • Pharmaceutical testing equipment

  • Moisture balances

  • Oenological testing equipment

  • Load cells

  • Microscopes

  • Thermometers

  • Calibrated masses and weights

  • Counting scales

  • Centrifuges

  • Ovens and temperature enclosures

National Weighing & Instruments are NATA accredited, assuring you of high standards.  Our technicians have been factory trained by the leaders in the industry and can provide service on:

* Mettler
* Sartorius
* A&D
* Gibertini
* Bilanciai
* Precisa
* Ohaus

NATA accreditation for

* Masses

* Balances

* Scales

*Centrifuges

*Pipettors

National Weighing & Instruments are able to offer the following:

Calibration Services:

  • Complete QA calibration system
  • Database generation
  • QA Documentation and records
  • Fully qualified technicians
  • Fast efficient on-site service

Calibration and certification of the following:

  • Flow (mag flows, Vortex metres, PD metres)
  • Pressure (Gauges, pressure transmitters, absolute)
  • Temperature (RTD, thermocouples)
  • Control loop (Primary element, coverter, DCS, PLC)
  • Converters
  • Weight feeders
  • Load cells
  • Analytical and precision balances and scales
  • Crane scales
  • Pharmaceutical testing equipment
  • Counting scales
  • Microscopes
  • Oenological testing equipment
  • Laboratory intrumentation
  • Periodic maintenance and repairs
  • Weights and masses
   Table of Conversion Factors

Length

1 mm = 0.03937 inches 1 inch = 25.4 mm
1 km = 0.6215 miles 1 mile = 1.609 km

Mass

1 kg = 2.204622 pd 1 pd = 0.453592 kg
1 gm = 0.03527336 oz 1 oz = 28.35 gm

Area

1 mm² = 0.0015499 in² 1 in² = 645.2 mm²
1 m² = 10.7642626 ft² 1 ft² = 0.09290 m²

Volume

1 cm³ = 0.610128 in³ 1 in³ = 16.39 cm³
1 m³ = 35.310734 ft³ 1 ft³ = 0.02832 m³
1 Litre = 0.0353095 ft³ 1 ft³ = 28.321 litre
1 Litre = 0.21997 gal 1 gal = 4.5461 litre

Density

1 kg/m³ = 0.6242197 lb/ft³
1 lb/ft³ = 16.02 kg/m³
1 kg/litre = 0.03612716 lb/in³
1 lb/in³ = 27.68 kg/litre

Pressure

1 kPA = 0.1450326 lb/in²
1 lb/in² = 6.895 kPa
1 kPa = 0.010197 kg/cm²
1 kg/cm² = 98.0665 kPa
1 kPa = 0.750063 cm of Hg @ 0ºC
1 cm of Hg = 1.33322 kPa @ 0ºC
1 kPa = 0.295333 inches of Hg @ 0ºC
1 inch of Hg = 3.386 kPa @ 0ºC
1 Pa = 0.010197 cm of H2O @ 4ºC
1 cm of H2O = 98.0638 Pa @ 4ºC
1 kPa = 4.01474 inches of H2O @ 4ºC
1 inch of H2O = 0.24908 kPa @ 4ºC
1 kPa = 0.01 bar  1 bar = 100 kPa
1 bar = 0.986923 atmospheres
1 atmosphere = 1.013250 bar

Flow Rate

1 litre/hour = 0.21997 gal/hour
1 gal/h = 4.546 litres/hour
1 litre/min = 0.2199736 gal/min
1 gal/min = 4.546 litres/min
1 litre/hour = 0.0353107 ft³/hour
1 ft³/hour = 28.32 litres/hour
1 ml/s = 0.127129 ft³/hour
1 ft³/hour = 7.866 ml/hour
1 ml/second = 0.01319783 gal/minute
1 gal/minute = 75.77 ml/second