Reviews Relative Pressure Sensor

Kestrel 3500 Pocket Weather Meter / Digital Psychrometer Altimeter Anemometer, Yellow

Accurate, rugged handheld weather meter with large, replaceable impeller, responsive temperature sensor, temperature-corrected humidity chamber and digital pressure altimeter.
optional night-vision-preserving backlight.
Measures barometric pressure and trend, altitude, wet bulb temperature, heat stress index, relative humidity, dew point temperature, wind chill, air/water/snow temperature, current/average/maximum wind speeds on large, clear LCD.
Waterproof (IP-67), floats, drop-tested to military standards (MIL-STD-810G), patented.
Includes slip-on protective cover, neck lanyard, CR2032 coin cell battery and 5-year warranty.
Used in firefighting, hazardous materials response, meteorology, military, law enforcement, research, education, scientific expeditions, competitive shooting, hunting and fishing, and more.

Sper Scientific 800027 Remote Relative Humidity (RH) Monitor and Digital Thermometer. Place accurate sensor inside a desiccator, refrigerator, or other environmental chamber and view simultaneous displays of temperature and RH.
Recalls min/max readings on both parameters. ºC and ºF selectable.
The remote ambient temperature / relative humidity sensor is mounted on a cord over 7’ long..

...300 to 32,800 ft) Measuring unit: 1 m (5ft) Manual memory measurements (up to 30 records, each including altitude, date, time) Auto log data (High/low altitudes, auto cumulative ascent and descent) Trek log data (up to 14 records of high/low altitudes, auto cumulative ascent and descent of particular treks) Others: Relative altitude readings (3,000 to 3,000 m), Selectable measurement interval: 5 seconds or 2 minutes.

Four-line LCD display shows barometric pressure, temperature, relative humidity, barometric pressure trend, and time-of-day.
Minimum/maximum readings for barometric pressure, temperature, and relative humidity are stored every hour for the last 24 hours.
Recalls previous readings with the simple touch of a button.

Relative humidity (RH) and temperature meter is used for HVAC, indoor air quality, and environmental applications.
Dual-scale thermometer measures air temperature readings in F and C.
Capacitive humidity sensor ranges from 0 to 100 percent relative humidity (RH).
Data hold for recording data, and minimum, maximum, and relative temperature readings.
Extended probe with protective cover reaches inside ducts and other hard to reach areas.
Battery Life: 85-hours continuous (with alkaline battery).

Precisely monitors indoor air quality - CO2, Temperature, Relative Humidity and Atmospheric pressure in Real-Time.
Visual and Sound Warnings when CO2 concentration gets too high.
Power-efficient E-Ink display ensures super long battery life for this wireless device (up to 4 Years).
Smartphone app for historical data viewing (supports iPhone and iPad with iOS 12 or later, Android devices with Nougat 7.0 or later, compatible with Bluetooth 4.1 or later).
Uses non-dispersive infra-red sensor (NDIR) technology for most precise CO2 measurements.

...sure, cold and heat, and is suitable for various harsh environments..
The barometer altimeter, with a built-in sensitive air pressure sensor, can measure the real-time atmospheric pressure value of the location.
because the altitude is inversely proportional to the atmospheric pressure, it can be used to measure the relative altitude.
after the altitude value is corrected, the real-time altitude can also be measured..
Barometer, altimeter, thermometer, and compass are four in one, no battery and charger, no maintenance and repair, sturdy and reliable, because it does not need electricity, it is a very good and reliable tool outdoors..
The altimeter barometer can predict future weather changes based on the barometric pressure, so that you can prepare in advance.
easy to carry and reasonable design bring convenience and convenience to your outdoor sports. Owning this barometer is equivalent to owning an altimeter, compass and thermometer..
This barometer and altimeter is a green and environmentally friendly product, pure mechanical structure, specially designed for you to do outdoor sports such as mountaineering, rock climbing, skiing, etc，It is your good partner for outdoor activities and an essential tool for outdoor sports..

Relative humidity (RH) and temperature meter measures temperature, relative humidity (RH), dew point, and wet bulb, and is used for HVAC, indoor air quality, and environmental applications.
Dual-scale thermometer measures wet- and dry-bulb temperature and dew point in F and C.
Capacitive humidity sensor ranges from 0 to 100 percent relative humidity (RH).
Data hold for recording data, and minimum, maximum, and average temperature readings.
Flexible probe reaches inside ducts and other hard to reach areas, and tripod mount stabilizes meter for extended readings.

...tors) Battery life: ~35 h Operating temperature: 14ºF to 122ºF or -10°C to 50°C Languages: English, German, French Italian, Spanish.
Altimeter Units: m / ft Resolution: 1 m or 1 ft Range: up to 40,354 ft or12,300 m QNH: air pressure indication in hPa or in Hg ALT 1: Absolute altitude ALT 2: Choice of absolute or relative altitude.
Variometer Units: m/s or fpm Graphic indication: ±2000 ft/min. or ±10 m/s Graphic resolution: 40 ft/min. or 0.2 m/s Numeric indication: ±30,000 ft/min or ±300 m/s Numeric resolution.
10 ft/min or 0.1 m/s Averager: selectable from 1 s to 30 s.
Acoustics Volume: 4 levels Vario profiles: Five predefined (weak, regular, strong, ridge soaring, balloon) - individually adjustable Climb tone: selectable lower threshold, frequency and cadence modulation Near-thermal tone: selectable lower threshold and volume adjustment Sink tone: selectable upper threshold and volume adjustment Stall alarm: selectable threshold (requires optional airspeed sensor) Additional vario adjustments: Base frequency, and modulation.
Airspeed Requires optional sensor Units: kph, knots, mph Range: 0 to 74mph or 0 to 120 kph, resolution 1 mph, km/h, kt Calibration: ±50%.

Precise angle and/or slope measurement with angle meter, bubble level, laser level with Accelerometer or Rotation Vector Sensor. (Check sensor....
Option to measure angle or slope on surfaces not parallel to ground with relative angle measurement mode..
2 orientation axis for measurement.(Move your device left/right or back/forward direction to measure angle).
Option to measure difference between 2 separate measurements with difference measurement mode..
Option to measure angles using very accurate Rotation Vector Sensor, or Accelerometer..