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Extech RH350 Dual Input Hygro-Thermometer Psychrometer original extech brand price in Pakistan 

Psychrometer with two Type K inputs for Superheat plus memory

The RH350 displays humidity, dew point, wet bulb, temperature and temperature differential. The triple backlit LCD can be changed to display humidity, temperature, dew point or humidity, temperature and wet bulb or humidity, temperature and Type K thermometer. Can also display the temperature difference between Type K T1 and T2 or air temperature and Type K or Type K and dew point. Advanced features include built-in memory and recall of up to 99 data points, Min/MAX/Average readings from the captured data, data hold and selectable auto power off. Includes 2 Type K temperature probes, and four AAA batteries.

  Dual Input Hygro-Thermometer Psychrometer Features:

• Superheat differential measurements: T1-T2, Air-T1, T1-Dewpoint
• Dual Type K external temperature probe input
• Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or External Probe Temperatures
• Built-in RS-232 interface (optional RS-232 cable) - uses Windows? Hyperterminal to download data to a PC
• Memory stores up to 99 data records
• Complete with two Type K bead wire temperature probes and 4 AAA batteries

Specifications                                 Range 350
Humidity                                        10 to 90%RH
Temperature (internal)              -4 to 122°F (-20 to 50°C)
Temperature (external)             -328 to 2498°F (-200 to 1370°C)
Dew Point                                    -90.4 to 122°F (-68.0 to 49.9°C)
Wet Bulb                                       -6.9 to 122°F (-21.6 to 49.9°C)
Dimensions                                   9 x 2.2 x 1.7" (230 x 57 x 44mm)
Weight                                           5.3oz (153g)