Type J Thermocouple Performance Data

The following charts document the performance of Veriteq 1700 Thermocouple data loggers when used with Type J (Iron-Constantan) thermocouples.

Type J Temperature Measuring Range

1700 Datalogger Version	Type J Measuring Range
	(°C.)	(°F.)

Wide Range "W" models	-50 to 900	-58 to 1650

Narrow Range "N" models	-130 to 160	-200 to 320

Type J Temperature Measurement Accuracy

The following graph details the instrument accuracy of the Veriteq 1700 Thermocouple data logger over the rated Type J measurement ranges for both Wide Range ("W") models (top graph line) and Narrow range ("N") models.

Type J Temperature Accuracy Graph

Instrument accuracy is based on a 25° C. cold junction temperature. Probe errors and probe temperature range limitations are excluded.

About Type J Thermocouples

Type J thermocouples are made up of a positive iron wire and a negative Constantan wire. They are one of the most popular thermocouple types primarily because of a broad measurement range and superior voltage output (which can result in greater temperature resolution). Note that type J probes, because of the iron component, are susceptible to oxidation and rusting, particularly at sub-zero temperatures.