温度计＋干湿球湿度计rh300
外接探头实现温差测量
同时显示湿度，温度、露点或湿球温度、探头温度计算t1-t2温度差（环境温度-探头温度）以及t2露点温度数据保持、自动关机最大值、最小值
技术参数
探头类型： 电容式
露点温度： -68~49.9℃
湿球温度： -21.6~49.9℃
湿度量程及精度： 10~90 %rh（±3%rh）
温度（内置）： -20~50℃精度：±0.6℃
温度（外置）： -20~70℃精度：±0.6℃
digital psychrometer
external probe temperature measurements for differential
calculates t1-t2 differential (air temperature minus external probe temperature)
features:
• simultaneous display of %rh, temperature and dew point or wet bulb or probe temperature
• wet bulb measurements without slinging
• calculates t1-t2 differential (air temperature minus external probe temperature) using optional probe (tp890)
and t2-dew point
• unique sensor cap design twists to closed position for protection during storage
• switchable °f/°c temperature units with 0.1° resolution
• data hold freezes current reading on display
• max/min readings
• auto power off to save battery life
• rh300 complete with 2 aaa batteries
• optional external temperature probe (tp890)
• optional kit rh305 includes rh300, temperature probe,33% and 75% calibration bottles, and carrying case
specifications: range max resolution basic uracy
humidity 10 to 90%rh 0.1%rh ±3%rh
temperature (internal) -4 to 122°f (-20 to 50°c) 0.1° ±1°f or ±0.6°c
temperature (external) -4 to 158°f (-20 to 70°c) 0.1° ±1°f or ±0.6°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 7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm)
weight 3.3oz (95g)
ordering information:
rh300 ..........................digital psychrometer
rh300-nist ................rh300 with nist certificate
rh305 ..........................digital psychrometer kit
rh305-nist ................rh305 with nist certificate
rh300-cal ..................33% and 75% rh calibration reference
tp890 ..........................optional thermistor temperature probe (for model rh300)
上海益朗仪器有限公司
13701600767
中国 上海