PCE-555 is a combination digital hygrometer and digital thermometer used to measure relative humidity or air humidity as well as air temperature, dew point temperature and wet-bulb temperature. This portable, handheld meter allows for quick and easy detection of environmental conditions. Applications include monitoring climates of refrigerated trucks, warehouses, construction sites and HVAC installations, where excess moisture, condensation and uneven temperatures can create mold, spoilage and health hazards.

• Humidity measuring range: 0 … 100 % relative humidity (rh)
• Temperature measuring range: -30 … 100°C / -22 … 212°F
• Resolution: 0.01 % rh / 0.01°C or 0.018°F

• Sound level: 35 ... 130 dBA
• Air velocity: 0.5 ... 30 m/s
• Volume flow: 150 ... 9000 CMM
• Light intensity: 0 ... 200 klux
• Temperature: -20 ... 60°C / -4 ... 140°F
• Humidity: 35 ... 80% r. h.
• Adjustable alarm for lux measurement
• Colored bar display

The PCE-HT 71N Air Humidity Meter detects air temperature and humidity and stores readings in its internal memory. The Air Humidity Meter has a compact format and a wide memory capacity (up to 32,000 values / 16,000 values for each parameter) and it is mainly used as a data logger in fields such as supermarket refrigeration units, refrigerated transport, warehouses, and other temperature controlled environments.

• Measurement range: 0 … 100% RH / -35 … 70°C / -31 … 176°F
• Accuracy: ± 3% RH (20 … 80%) and  ± 5% / ± 1°C (1.8°F)
• Resolution: 0.5% RH / 0.1°C (0.18°F)
• Memory: Max. 32,000 measurement data (16,000 for each parameter (humidity / temperature))