ESD's make 90 series temperature indicator is suitable for continuous measurement of 2 or 4 channels at a time in a single unit.
ESD 9073 ESD 9086
Ranges
Std. as per chart below (other on demand)
Input
Pt � 100 Thermocouple 4 � 20 mA
No of channels
Two Four
Indication
199.9 12.5 mm Red LED display