ThermCondSys 5500Thermal Comfort Testing System

ThermCondSys 5500The thermal comfort testing system is an indoor climate environment detection instrument developed to meet the growing demand for indoor thermal environment detection. It can conveniently record and calculate indoor climate related data, and automatically calculatePMV、PPD、Tu、DRWaiting for thermal environment parameters. be based onWLANperhapsZigBeeThe wireless communication system enables testing to be conducted far away from mobile base stations. conform toISO 7726、ISO 7730、ISO 27243、ISO 7933、ASHRAE 55Standard requirements.

Performance characteristics:　　

Portable (moving from one place to another)
Quick and easy installation (connection)
Low power consumption and long-term recording
Having automatic sleep mode to reduce power consumption
Wireless data transmission

ThermCondSys5500Configurable sensors:
T_g: globe temperatureGlobe Temperature
T_nw: natural wet temperatureNatural Wet Bulb Temperature
T_a: air temperatureair temperature
P_b: barometric pressureatmospheric pressure
RH: relative humidityrelative humidity
V_a: air speedAir flow rate

The main indicators that can be calculated and predicted from the above parameters are:
WBGT_in: wet bulb globe temperature

Wet bulb globe temperature
WBGT_out: wet bulb globe temperature in the presence of radation

Wet bulb black bulb temperature under solar radiation conditionsPMV: predicted mean vote

Expected average thermal sensation index
PPD: predicted percentage of dissatisfied

Expected percentage of dissatisfied individuals
SD: standard deviation of air speed

Standard deviation of air flow velocity
Tu: turbulence intensity of air speed

Local turbulence intensity
DR: draught rating

Vortex airflow intensity
T_r: mean radiant temperature

Mean Radiant Temperature
T_o: operative temperature

Operating temperature
T_ad: adjustable temperature

Adjustable temperature
T_eq: equivalent temperature

Equivalent temperature
E_req: required evaporation rate

Demand evaporation rate
E_max: maximal evaporation rate

maximum evaporation rate
W_req: required skin wittedness

Skin moisture level
SW_req: required sweat rate

Sweat Rate Required
ρ: air density

air density
P_a: partial water vapour pressure in the air

Partial pressure of water vapor
X: specific humidity

specific humidity
DEW: dew point temperature

Dew point temperature
I: enthalpy for humid air

Enthalpy value of humid air (thermodynamic index)
WCI: wind chill index

wind-chill index

systems design
The probes used for measurement are integrated together through a module (only the air flow velocity probe can be disconnected and moved), which makes the system convenient and fast to use. This module is connected via a single cable for power supply and data transmission. After the user selects the relevant sensor probe, two different measurement modules can be configured. pass throughRS485The output module ensures the transmission of data to the computer. This system can be accessed throughSensoConnect USBConnect to computer and use wireless systemSensoBee485Transmitter and computerSensoBeeUSBReceiver connection.

be based onLabVIEWThe software of the platform can be used to record data and transfer data to a computer orPDAAbove:
Configuration of automatic scanning testing system
Calculate relevant thermal environment parameters
After setting the automatic sleep mode, the system will enter energy-saving mode (this function can ensure that the system can maintain long-term operation in battery state)

measuring module
All measurement modules are integrated into one high48mmThe diameter is100mmOn the cylindrical box. The air temperature and humidity probes are placed in the top cylinder, while the natural wet bulb, black bulb temperature, and air flow velocity probes are installed in a length of100mmOn the side support rod. The measurement module can be connected to additionalRTDThe probe is used for additional temperature measurements (such as floor surface temperature, air inlet temperature, etc.). The air flow velocity probe can be disconnected from the measurement module for separate transportation, storage, and calibration. The measurement module can be placed on movable brackets or tripods of different heights. The minimum height at which the sensor can be placed is from the floor0.1m.

Specification
Homework temperature:-10～50 oC
Homework humidity:0～90% RH(No condensation)
Measurement range of air flow velocity:0.05～5 m/s
Pressure measurement range:500～1500 hPa
Power supply: 6Vdc/1A
Battery: fourjointAANi-MH
Communication interface: RS485, USB
Wireless interface: Zig –Bee

The wind speed probe includes a spherical omnidirectional wind speed sensor and a temperature compensation sensor. These sensors are vacuum coated with a special aluminum coating to increase their resistance to contamination and reduce the impact of thermal radiation on velocity measurement accuracy.

Air flow velocity sensor:
Sensor type: Wanxiang
Sensor diameter: 2mm
Measurement speed range:0.05～5m/s
Accuracy:±0.02m/s±1%Reading
Automatic temperature compensation:<±0.1％/K
Upper limit frequency*: Minimum1Hzstandard1.5Hz

Upper limit frequency: The ratio at which the highest frequency can reach the standard deviation is maintained at0.9to1.1Within the scope (seeEN13182building ventilation-Requirements for measuring airflow velocity in ventilated spaces,2002Standardization by the European Commission, Brussels.

Air, natural wet bulb, black bulb temperature sensors:
UseRTDThe sensor probe measures temperature, and each sensor is calibrated separately with calibration coefficients stored in the memory of the connector. Equipped with drift automatic correction function, ensuring high stability of measurement.
Sensor type:Pt-100
Measurement range:-10～50 oC
Accuracy:±0.1 oC
Pressure sensor:
Located inside the measurement module casing. The probe adopts specialized piezoresistive micro mechanical sensor components. This probe is thermally compensated.
Measurement range:500～1500 hPa
Accuracy:±3 hPa
　　
Relative humidity sensor:
The probe is located at the top of the measurement module and includes a capacitive sensor element and a compensating temperature sensor element.
Measurement range:0～100% RH
Accuracy:±2% in range 10～90% RH
Long term stability:<1% RH/year
Response time:<4 s

Accessories:

Here are 5 plan drawings: