max. depth 2,000m
The NTC temperature sensor consists of a small diameter glass-coated thermistor bead hermetically sealed to the tips of shock-resistant glass rods. The extremely small size allows a very fast response time of 7 ms at a flow rate of 1 m/s. The thermistor beads are aged for extended periods at a temperature of 300°C, resulting in excellent long term stability and accuracy. The thermistor element is glued into the sensor tip and protected by a perforated tube against impact and collision with other materials. The angular width for unperturbed measurements is approximately 120°, allowing sinking velocities as low as 30 cm/s. The sensor housing is made of titanium and is screwed into the microstructure flange. Inside the microstructure flange is a small printed circuit board containing the electronic circuitry for the pre-amplifier and linearisation of the NTC characteristic curve, providing optimum protection against electromagnetic induced noise.
Technical data:
- Pressure resistance: 2,000 dbar
- Measuring range: -2… 32°C
- Accuracy: ± 0.01°C
- Resolution: 500 μK (linear), 50 μK (pre-emp. 10 Hz), 5 μK (pre-emp. 100 Hz)
- Response time: 10 ms
- Principle: NTC-resistor with linearized amplifier
- Material: Titanium
- Overall length: 257 mm
- Used for: MSS probes
