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Philips TH1 thermocouple

Size
 This device measures 62x24mm overall and has a 4 pin base.

This device is a thermocouple. It is marked Ims Av (hard to see) 58743 handwritten.


Heater resistance (approx) 75 ohm
Thermocouple resistance (approx) 5.5 ohms
Heater continuous load current 15mA
Heater overload current (short duration) 20mA
Heater current at 12mV EMF (approx) 10mA

The deviation of the instrument varies proportionately with the square
of the current to a maximum error of 2% up to 5mA.

The pins are + and - thermocouple (marked), and heater (unmarked pins).

TH1
Top view

Donated by Åke Holm; thanks to Jan for the information.

This file was last modified18:43:45, Friday March 16, 2007