My friend has a 1957 Hillman Minx car which has a water temperature sensor which is a little out of calibration.
TT/1200 by Smiths Industries
The supply is 12V which then goes through a thermal meter, (shows maximum at zero current), then to the sensor which is screwed into the engine with one connection.
The meter current pulses at about 1/sec and the amplitude (perhaps pulse width) decreases as the temperature rises.
Does anyone know how this pulsing sensor works?
Is there any way the meter deflection can be dropped by 10%?
TT/1200 by Smiths Industries
The supply is 12V which then goes through a thermal meter, (shows maximum at zero current), then to the sensor which is screwed into the engine with one connection.
The meter current pulses at about 1/sec and the amplitude (perhaps pulse width) decreases as the temperature rises.
Does anyone know how this pulsing sensor works?
Is there any way the meter deflection can be dropped by 10%?