testo 645 - Humidity measuring instrument for industry

• Adjustable min./max. alarm
• Permanently connected probe
• With clip for set-up, wall mounting or attachment
• Measuring range: -50 to 150 °C

 

• Rugged and durable 24" x 24" air flow capture hood weighs less than 6.4 lbs (with base)
• Large, tiltable, removable backlit display makes readings easy to see
• Flow straightener for more precise measurement at turbulent outlets
• App integration via Bluetooth for fast and easy monitoring and reporting on site

 

• High quality optional sensors for measuring air flow / temperature / humidity / pressure / degree of turbulence / heat radiation / CO2 / illumination intensity / PMV / PPD / WBGT
• High precision, integrated pressure difference sensor included
• Pro-software for easy and efficient analysis and logging included
• Intelligent calibration concept

 

• Quickly and accurately measures relative humidity and temperature in rooms, ducts, and chambers
• Automatically calculates dew point and wet bulb temperature
• Small diameter probe is ideal for in-duct measurements
• For all HVAC/R technicians and contractors

 

• Connectivity for an attachable/wireless sensor
• Wide range of optional sensors to suit your individual needs
• User-defined thresholds / audible alarm alerts when threshold exceeded
• Certified according to HACCP and EN 13485 / ideal for use with food

 

• Data logger with internal sensors for temperature, humidity, cumulative lux, and UV exposure level recording
• Optional paintable logger cover helps conceal the logger in an exhibit
• Logger sends data to the Testo Cloud using your existing Wi-Fi network, alarms by email (Basic License), and optional text messages with the Advanced License
• Simple to install, integrate, and operate

 

• Two alarm limit values that can be defined as required
• Visual and acoustic alarm if limit value exceeded
• Min./max. value display and hold function (to record a measured value)
• Convenient one-handed operation, thanks to the ergonomic gun style design
• Clear, illuminated digital display

 

• NFC printer for testo 184 loggers, special USB cable for 175 and 176 loggers
• Battery operated for mobile operation, Li-ion rechargeable battery
• Prints graphs and data with 175 and 176 loggers

 

• Simple one-hand operation
• Measurement of rpm, speeds and lengths
• Storage of mean, max. and min. values as well as the last reading
• Includes accessories such as reflective markers, protective case and transport case

 

• Load and tightness tests of gas pipes
• Pressure testing of water pipes using air
• Switchable measuring ranges with high resolution
• Alarm indicator for undershooting of freely adjustable limit values