Series Information

ST689 Series

Infrared Thermometer With the temperature range of -50~1000℃

The ST689 series is non-contact infrared temperature measuring instruments. With the temperature range of -50~1000℃ (-58~1832℉).

ST689 Series main features

• Resolution: 0.1℃ / 0.1℉
• Response Time: 500 ms
• Distance/Spot Ratio: 50:1
• Thermopile: 8~14μm
• °C/°F Switchable
• Laser Sight Switchable
• Adjustable Emissivity

About SENTRY infrared thermometers

Sentry Optronics Corp. where the motto is Excellence, Innovation, and Satisfaction.  As being an outstanding designer & manufacturer for Infrared Technology, they are committed to exceeding their customer’s requirements and providing the highest grade of technical support. They are always on the cutting edge of technology and integrate the engineering, quality, manufacturing, and sales closely to become an impeccable developing team. They have earned a long-standing relationship with their clientele. They believe in providing their customer base with total satisfaction.
They are situated in China with two manufacturing plants, one in Shanghai and one in Beijing. This company represents 8 infrared thermometers series as follows:

• ST630/ST632: These series are the economical appliances with infrared application. With the temperature range of -20~320℃ (-4~608℉) / -20~500℃ (-4~932℉).
• ST633: This model gives higher CP value to offer better temperature range, DS ratio and other extra functions.
• ST640/ST642/ST643: These series include eSmart function are the intelligent non-contact infrared temperature measuring instruments.
• ST650/ST652/ST653: These series are non-contact infrared temperature measuring instruments.
• ST656/ST658: These series are non-contact infrared temperature measuring instruments specifically for low temperature applications.
• ST660/ST662/ST663: These series are non-contact infrared temperature measuring instruments designed with wide temperature range, especially for high temperature applications.
• ST685/ST688/ST688PLUS/ST689: These series are non-contact high performance infrared temperature measuring instruments with high DS ratio, wide temperature range.
• ST670/ST672/ST675/ST677: These series are new generation of high performance infrared thermometers.

SENTRY innovations are as follows:

• Ambient temperature compensation
• Emissivity adjustment
• Optical Design for high DS ratio
• High Performance infrared thermometer
• Super low temperature calibration

SENTRY products are mainly used in:

• Steel Industry
• Glass Industry
• Plastic Industry
• Preventive Maintenance
• Chemical Industry

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