Standard thermometers for calibration laboratory
Reference Thermometer PRTD SPH-01 350 mm
The reference thermometer SPH-01 is a platinum resistance thermometer specially developed for typical laboratory applications, offering excellent stability due to the physically aged pure platinum resistance element with pure alumina insulation.
Applications: Laboratory thermometers in general.
Construction: The design of this practical and accurate thermometer allows the sensor coil to expand and contract in the internal cavity of the ceramic insulator. The result of this construction, avoid deformations in the platinum coil, providing an excellent stability throughout the temperature range.
Rated Resistance: 100 Ohm @ 0 °C
Temperature range: -40 C to +420 C
Temperature Coefficient: Tc = 3850 ppm/K
Extension cord: Tinned copper, 4 x 24 AWG Silicone Insulation
Protection Tube: Steel AISI 316
Insulation Resistance: > 4 G Ohms @ Room temperature > 1.5 G Ohms @ 420°C
Measuring Current: 1 mA
Depth of Immersion: 120mm to 250mm
Self-heating: 0.070 K/mW
Thermal Hysteresis Test: Max. Ro-drift 0.04% (According to Standard ASTM E 644-02 item 16)