Temperature Range: -189°C to 660°C.
Resistance at 0°C (Rtp): 25 Ohms +/- 0.5Ohm.
Reproducibility: +/-0.001°C.
Basic Accuracy: +/-0.001°C.
Self heating: 0.002°C to 0.003°C with 1mA and the thermometer bulb immersed in unstirred water.
Case Size: 67 x 16 x 7 cm.
Calibration: Suitable for calibration to ITS-90 up to max temp 660.323°C (F.P.Aluminium).
R(Ga)/R(tp): Ratio not less than 1.11807.
R(Me)/R(tp): Ratio not greater than 0.844235.
Gas Filling: Dry air at 1/3 atmosphere.
Dimensions: Sheath - diameter 6.5 to 7.5 length 480 mm / Head - diameter 23 mm length 60 mm Overall length: 540 mm / Immersion depth: 300mm.
Leads: Supplied with 4 metres of PTFE insulated cable fitted with gold plated copper spade tags.
Nett Weight: Including thermometer 1.15kg.
This four terminal Precision Platinum Resistance Thermometer is designed to realise, with the highest accuracy, the International Temperature Scale ITS-90 over the range -189°C to 66O°C. The design is the result of many years practical experience and cooperation with the National Physical Laboratory, Teddington, where primary resistance and other standards are maintained.
- Temperature Range: -189°C to 660°C.
- Resistance at 0°C (Rtp): 25 Ohms +/- 0.5Ohm.
- Reproducibility: +/-0.001°C.
- Basic Accuracy: +/-0.001°C.
- Self heating: 0.002°C to 0.003°C with 1mA and the thermometer bulb immersed in unstirred water.
- Case Size: 67 x 16 x 7 cm.
- Calibration: Suitable for calibration to ITS-90 up to max temp 660.323°C (F.P.Aluminium).
- R(Ga)/R(tp): Ratio not less than 1.11807.
- R(Me)/R(tp): Ratio not greater than 0.844235.
- Gas Filling: Dry air at 1/3 atmosphere.
- Dimensions: Sheath - diameter 6.5 to 7.5 length 480 mm / Head - diameter 23 mm length 60 mm Overall length: 540 mm / Immersion depth: 300mm.
- Leads: Supplied with 4 metres of PTFE insulated cable fitted with gold plated copper spade tags.
- Nett Weight: Including thermometer 1.15kg.
This four terminal Precision Platinum Resistance Thermometer is designed to realise, with the highest accuracy, the International Temperature Scale ITS-90 over the range -189°C to 66O°C. The design is the result of many years practical experience and cooperation with the National Physical Laboratory, Teddington, where primary resistance and other standards are maintained.
