Service & Calibration

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:

 

  • Electrical Calibrations (voltage, resistance, AC/DC)
  • 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

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
  • Centrifuges
  • Pipettors
 

 

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
Table of Conversion Factors
Length Mass Area
1 mm 0.03937 inches 1 kg 2.204622 pd 1 mm2 0.0015499 in2
1 inch 25.4 mm 1 pd 0.453592 kg 1 in2 645.2 mm2
1 km 0.6215 miles 1 gm 0.03527336 oz 1 m2 10.7642626 ft2
1 mile 1.609 km 1 oz 28.35 gm 1 ft2 0.09290 m2
           
Volume Density
1 cm3 0.610128 in3 1 Litre 0.0353095 ft3 1 kg/m3 0.6242197 lb/ft3
1 in3 16.39 cm3 1 ft3 28.321 litre 1 lb/ft3 16.02 kg/m3
1 m3 35.310734 ft3 1 Litre 0.21997 gal 1 kg/litre 0.03612716 lb/in3
1 ft3 0.02832 m3 1 gal 4.5461 litre 1 lb/in3 27.68 kg/litre
           
Pressure
1 kPA 0.1450326 lb/in2 1 cm Hg 1.33322 kPa @ 0°C 1 kPa 4.01474 inches H2O @ 4°C
1 lb/in2 6.895 kPa 1 kPa 0.295333 inches Hg @ 0°C 1 inch H2O 0.24908 kPa @ 4°C
1 kP 0.010197 kg/cm2 1 inch Hg 3.386 kPa @ 0°C 1 kPa 0.01 bar 1 bar = 100 kPa
1 kg/cm2 98.0665 kPa 1 Pa 0.010197 cm H2O @ 4°C 1 bar 0.986923 atmospheres
1 kPa 0.750063 cm of Hg @ 0°C 1 cm H2O 98.0638 Pa @ 4°C 1 atmosphere 1.013250 bar
           
Flow Rate
1 litre/hr 0.21997 gal/hr 1 litre/hr 0.0353107 ft3/hr 1 ml/second 0.01319783 gal/minute
1 gal/hr 4.546 litres/hr 1 ft3/hr 28.32 litres/hr 1 gal/minute 75.77 ml/second
1 litre/min 0.2199736 gal/min 1 ml/s 0.127129 ft3/hr    
1 gal/min 4.546 litres/min 1 ft3/hr 7.866 ml/hr    
           
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