Isotech: Secondary Laboratory Calibration

Secondary Laboratory
Selector Switch Model 947
	16 Channel Selector Switch
From Databook 2	Low Thermal EMF Resistance Thermometer Copper Thermocouple inputs and CJC sensor
Data Sheet
The TTI Selector Switch may be used with Isotech True Temperatrue Indicators and allows up to 16 thermometers to be selected. Connections are made via 4mm sockets. In addition to the 16 four wire inputs on the front panel there are 16 thermocouples sockets on the case. A precision PT100 element is thermally attached, this allows the use of the TTI-7 remote CJC option and facilitates switching of thermocouples through the selector switch. The selected channel is identified with an LED indication.