Model 630 K-type Thermocouple Compact Digital Thermometer The 630 is a portable 3 1/2 digit, compact-sized dual input digital thermometer designed to use external K-type thermocouples as temperature sensors. This unit can display the temperature difference between it two inputs. ■ Backlight ■ Display Hold ■ Max. Hold 630 Measurement Range Resolution Basic Accuracy Sensor Type Sample Rate Operating Temp. & Humidity Storage Temp. & Humidity Power Supply Battery Life Dimensions (HxWxD) Weight -58˚ to 2000˚F (-50 to 1300˚C) 1˚F/˚C, 0.1˚F/˚C +(0.3% rdg + 1˚) K-type thermocouple 2.5 times per second 32˚ to 104˚F (0˚ to 40˚C), at < 70% RH -4˚ to 140˚F (-20˚ to 60˚C), 0 to 80% RH with battery removed 9V battery > 200 hours typical 6.1 x 2.6 x 1.4" (156 x 65.5 x 35mm) 7.05 oz. (200g) Model 635 Compact Digital Infrared Thermometer The 635 is a portable easy to use 3 digit, compact sized infrared digital thermometer with laser pointer, designed for simple one hand operation. Meter comes with Backlit LCD display, Auto-hold function and auto power down (20 seconds approx.) after releasing MEAS button to extend battery life. ■Laser pointer ■ Reading Hold ■ Adjustable Emissivity Measurement Resolution Accuracy Spectral Response Emissivity Field of View Sample Rate Operating Temp. & Humidity Storage Temp. & Humidity Power Supply Battery Life Dimensions (HxWxD) Weight Range -4˚ to 1022˚F (-20˚ to 550˚C) 1˚C/F +2% of reading or +6˚F (3˚C), whichever is greater 6 to 14µm 0.10 to 1.00 by steps of 0.01 2.5" Ø at 39" (65mmØ at 1000mm) 1 time per second 32˚ to 122˚F (0˚ to 50˚C), at < 70% RH -4˚ to 140˚F (-20˚ to 60˚C), 0 to 80% RH with battery removed 9V battery > 200 hours typical 6.7 x 2.6 x 1.4" (170 x 65.5 x 35mm) 6.7 oz. (190g) Compact Digital Thermo-Hygro Meter The 625 is a portable 3 1/2 digit, compact-sized digital Thermo-Hygrometer designed for simplicity and one hand operation. It can measure and display an environment temperature and humidity in a fraction of a second. ■ Backlight ■ Display Hold ■ Max. Hold Measurement Range Humidity Resolution Basic Accuracy Sensor Type Sample Rate Operating Temp. & Humidity Storage Temp. & Humidity Power Supply Battery Life Dimensions (HxWxD) Weight Temperature: 32˚ to 140˚F (0˚ to 60˚C) 0% to 100% RH. Temperature: 0.1˚F/C Humidity: 0.1% RH Temperature: +1˚F/C Humidity: +2.5% RH Temperature: Thermistor Humidity: Electronic capacitance polymer film sensor 2.5 times per second 32˚ to 131˚F (0˚ to 55˚C), at < 75% RH -68˚ to 131˚F (-20˚ to 55˚C), 0 to 80% RH with battery removed 9V battery > 200 hours typical 7 x 2