Calibrator thermometers Model 42311 (Type J) and Model 42312 (Type K) are designed to source or measure Type J or K thermocouples. In the source mode, different output values are quickly selected using the rotary switch and fine and coarse adjustments, says the manufacturer. Source temperature ranges up to 2,000Â°F. In the measurement mode, the thermometers accept one or two thermocouples with data hold and max functions. Basic accuracy is 0.1% with 0.1Â°/1Â° resolution, the company says. Source and measurement values are displayed on a backlit LCD.
Extech Instruments Corp., 285 Bear Hill Rd., Waltham, MA 02451-1064; 781-890-7440; 781-890-7864 (fax); extech@ extech.com (e-mail); www.extech.com (website).
Publication date: 12/04/2000