The Fluke Calibration 9009B156 Industrial Dual-Block Dry-Well Thermometer Calibrator (Black), -15 °C to 350 °C (Hot) may be used as a portable instrument or bench top temperature calibrator for calibrating thermocouple and RTD temperature probes. The 9009-B-156 is small enough to use in the field, and accurate enough to use in the lab. Calibrations may be done over a range of –15°C to 350°C (5°F to 622°F). Temperature display resolution of the 9009-B-156 is 0.1 degrees.

The temperature of 9009-B-156 is accurately controlled by a precision Hart Scientific controller. The controller uses a precision platinum RTD as a sensor and controls the hot temperature block with a solid state relay (triac) driven heater. A thermal electric device (TED) controls the cold temperature block.

The LED front panel continuously shows the current well temperature. The temperature may be easily set with the control buttons to any desired temperature within the specified range. The 9009-B-156's multiple fault protection devices insure user and instrument safety and protection.