ST633 and ST642 Configurable Handheld Infrared Thermometers • • Type K Thermocouple Input eSmart Emissivity Correction Colour Changing Display for Alarm Tripod Mounting Thread Audible Alarm °C/°F Switchable Laser Sight Switchable On/Off Carrying case included Backlit display with Reading Hold Adjustable high and low alarms, audible and visual (ST642) Emissivity Setting Adjustable / selectable emissivity setting Input for type K thermocouple (ST642) Narrow field of view Built-in laser pointer to improve aim ST642, showing Type K Thermocouple input (probe not included) Wide temperature range Fast sampling time High quality construction The ST633 and ST642 are low-cost, high-quality handheld infrared thermometers with laser sighting and a large backlit LCD display. A wide temperature range covers most general industrial applications. Both units offer a narrow 12:1 field of view, with a small diameter measurement area allowing the unit to be precisely aimed. The default emissivity setting is 0.95, making the ST633 and ST642 ideal for most organic materials and non-reflective (painted, oxidised or anodised) metals. The emissivity setting is selectable (ST633) or adjustable from 0.1 to 1.0 (ST642), and can be set automatically on the ST642 by using the thermocouple input and eSmart feature. Both models have adjustable audible alarms. The ST642 has visual alarms: the colour of the display changes when the target temperature exceeds the alarm set point. Temperature Range Readings can be taken in °C or °F, and when the trigger is released the last measurement is held for approximately 7 seconds before the unit automatically powers off. These thermometers will operate in ambient temperatures from 0°C to 50°C and are powered by a standard PP3, 9V battery. Type K Thermocouple input: ± 1.5% + 1° C/F Each unit is supplied with a soft carrying case. Spectral Range Response Time Ambient Range Automatic after approx. 7 s Spot Diameter *Accuracy is given at ambient temperature of 25°C (77°F) Issue A - Sep 21 Specifications subject to change without notice 40" 3.1" Distance : Spot Ratio Nominal 12:1