2 Introduction
The Hart Scientific9150 thermocouple furnace can be used for calibrating ther-
mocoupleand RTDtemperature probes. Calibrations may be done over a range
of 150°C to1200°C (302°F to 2192°F). Temperature display of the 9150 is 0.1
degreesbelow 1000°and 1 degrees above 1000°.
The furnace features:
•Rapid heating and cooling
•Interchangeable multiple hole probe sleeves
•Convenient handle
•RS-232 interface
Builtin programmable features include:
•Temperature scan rate control
•Eight set-point memory
•Adjustable readout in °C or °F
The temperature is accurately controlled by Hart’shybrid analog/digital con-
troller.The controller uses a Type S thermocouple as a sensor and controls the
well temperature with a solid state relay (triac) driven heater.The furnace
should be calibratedyearly by trained personnel at Hart Scientific.
The LED front panel continuously showsthe current well temperature. The
temperature may be easily set with the control buttons to any desired tempera-
ture within the specified range. The calibrator’smu ltiple fault protection de-
vices insureuser and instrument safety and protection.
The 9150 calibrator furnace was designed for portability,low cost, and ease of
operation. Through proper use, the instrumentwill provide continued accurate
calibration of temperature sensors and devices.The user should b e familiar
with thesafety guidelines and operating procedures of the furnace as described
in this manual.
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2 Introduction