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PCE-555 Hygrometer
Handheld hygrometer to measure environmental conditions / 
measurement of humidity, temperature, dew point and wet bulb globe temperature / 
short response time and fast measurement rate

This hygrometer is designed to take quick measurements of the environmental conditions. To do so the hygrometer measures humidity and temperature. In addition to that it is also possible to determine the wet bulb temperature as well as the dew point temperature which allows the elimination of fungus in food storage, as well as in food transportation. 

It is also very useful in the construction industry to determine condensation in walls. Thanks to its solid design, this hygrometer is ideal for taking measurements on site, so long as the humidity sensor is not touched, manipulated or placed directly into liquid as it is a very sensitive component. The fast measurements that can be made with the hygrometer make it a very handy device to estimate the environmental conditions in very different fields of application.

For further information on the hygrometer, please read the following technical data or call our hotline: UK customers +44(0) 23 809 870 30 / US customers +1-410-387-7703. Our engineers and technicians will gladly advise you with the hygrometer or any other device in the field of measurment instruments, laboratory equipment, regulation and control or scales and balances of PCE Instruments.

Get additional infomation on the hygrometer   User manual for the PCE-555 hygrometer

Further information of the Hygrometer PCE-555

Technical specifications of the hygrometer

Measurement ranges

0 ... 100 % RH
-30 ... 100 °C

Resolution

0.01% RH
0.01 °C

Accuracy

±2.0 % RH at 25 °C / 20 ... 80 % RH
other measurement areas: ±2,5 % RH

Measurement rate

2,5 / second

Display

dual LCD with 4.5 positions (backlit)

Response time RH

about 10 seconds

Power supply

9 V battery

Functions

HOLD-function for MIN- and MAX-values

Auto offset

after approx. 15 min. of inactivity 
(can be disabled)

Storage conditions

-10 ... +60 °C, <80 % RH

Dimensions

225 x 45 x 34 mm

Weight

200 g

Examples of use for the PCE-555 hygrometer

Outdoor use of the hygrometer

Outdoor use of the hygrometer.

Indoor use of the hygrometer

Indoor use of the hygrometer.

Dry bulb temperature is simply the environmental temperature. It's the temperature that is measured using any kind of thermometer.
Wet bulb temperature is determined by using a mercury thermometer which is situated in the shade with the bulb covered with a piece of wet fabric under a current of air, measuring, for example, a vent or a rotating electric fan. This way, the evaporation of water absorbs heat lowering the temperature, reflecting the decrease in the temperature reading. The lower relative humidity is, the quicker the water in the fabric will evaporate and the further the resulting decrease with respect to the dry bulb temperature (this is used to give an idea of thermal sensation).
Dew point is the temperature at which air vapour turns into condensation, producing dew, mist or frost if the temperature is low enough.

Wet bulb definition

If we pay attention to the wet thermometer temperature (wet bulb temperature), the same wet bulb temperature is always obtained with different temperature and relative humidity combinations: for instance, the same wet bulb temperature is obtained 10 ºC for 20 ºC and 23 % RH or for 15 °C and 52 % RH, as well as many other combinations which are shown in the table for humidity meters. This fact is very important for the operation of conditioning installations due to the fact that the air which is located can be converted into one state or another without power supply. Taking into account an air mass at  20 °C to 23 % RH and transforming water in water vapour without any external power supply, relative humidity increases at the same time that temperature decreases owing to the evaporation cold. All the states obtained during the evaporation process are near the line of the constant wet bulb temperature: at 52 % RH a 10 °C temperature is reached. These changes are called adiabatic and are valued in the conditioning technique.

Scope of delivery of the hygrometer

1 x PCE-555 Hygrometer, 1 x carrying case, 1 x battery, 1 x user manual

technical specifications for the PCE-555 hygrometer

Return to homepage from hygrometer

Here you will find an overview of all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

Contact:
PCE Americas Inc.
711 Commerce Way suite 8
Jupiter 33458 FL
USA
Phone: +1-410-387-7703
Fax: +1-410-387-7714
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Below you will find an overview of the different product groups of measuring instruments

 Absolute Humidity Meters
 Accelerometers
 Alert Meters
 Air velocity meters
 Analyzers (Colour)
 Analyzers (Gas)
 Analyzers (Lan)
 Analyzers (Noise)
 Analyzers (Oxygen)
 Analyzers (Ozono)
 Anemometers
 Barometers
 Borescopes

Cable detectors (electrical)
Calibrators
Cameras (Infrared Thermal Imaging)
Capacitance Meters
Coating Thickness Meters
Chlorine Meters
Clamp Meters
Climate Meters
Colour Meters
Conductivity Meters
Contact Thermometers
Current detectors

Data Loggers
Differential Pressure Meters
Digital Multimeters
Densimeters
Detectors (Humidity, Radiation, Voltage)
Dose Meters (Noise)

 Earth meters
 Endoscopes
 Environmental Meters

 Fiberscopes
 Flow Meters Air
 Flow Meters Gas
 Force Gauges (digital)
 Frequency Meters

 Gas detectors
 Geiger Counter

 Handheld Tachometers
 Hardness Meters
 Humidity Testers
 (Building material)
 
Hygrometers

Indicator Sound Level
Indicators (Humidity)
Instruments (Environmental)

Impedance bridges
Infrared Thermometers
Isolation Meters

Lan Network Testers
Laser Distance Meters
Laser level
Laser meters
Laser thermometers
LCR Meters
Length Meters
Light Meters
Lux Meters

 Magnetometers
 Manometers
 Material Thickness meters

 Measurement Devices
 (Force)
 Measuring Meters
 (Distance)
 Measuring Wheels
 Meters (Distance)
 Meters (Ozone) 
 Meters (Gas) 
 Meters (Gloss)
 Meters (pH)
 Meters (Power)
 Meters (Pressure)  
 Meters (Radiation)
 Meters (Temperature)  
 Micrometers
 Microscopes
 Modular signal 
 Converters
 Moisture Indicator
 Multimeters
 Multi-Parameter    
 photometers

Noise Meters

 Odometers
 Ohm Meters
 Oscilloscopes
 Oxygen Meters
 Paper Moisture Meters
 Penetrometers
 Pitot tube air flow
 meters
 Pocket pH-meters
 Power Analyzers
 Pressure Gauges
 Pyrometers
 Quality Meters (Air)
 Radiation Counters
 Radioactivity meters
 Reader (Temperature)

 Recoders Data
 Redox Meters
 Refractometers

 Relat. Humidity meters
 Rotation meters
 Roughness tester
 Salt Meters
 Sensor (Temperature)
 Signal Level Analyzers
 Single-parameter  
 Photometers
 Sound Level Meters
 Systems for 
 Environmental
 Stethoscopes 
 (electronic)
 Stroboscopes
 Surface Thickness 
 meters

Tachometers
Telescope Meters
Thermo-anemometers
Thermo-Hygrometers
Temperature Probes
Testers (Air)
Tester (Conductivity) Tester (Earth)
Tester (Electric)
Tester (Insulation)  Tester (Noise)
Tester (pH)
Tester Resistance Tester (Sound)
Tester (Temperature)
Thermal stress
Thermal Imaging Cameras
Thermometers
Thermocouples
Thickness Meters
Turdibity Meters

Ultrasonic Flow Meters

VDE tester
Vibration Meters
Video endoscopes
Voltage meters