Expert in Optical & Thermal Measurement Solutions
Related instruments Light & radiation
Shown below is a Senseca HD2302.0 light meter, equipped with an LP471UVB probe for UVB irradiance measurement.
The instrument is user-friendly and supports plug-and-play operation. It is compatible with more than ten different light and radiation measurement sensors, such as UVA and illuminance sensors. Please see the instrument datasheet for the sensor options.
Related instruments Light & radiation
Shown below is a LPPHOTO03BL illuminance (lux) sensor for outdoor use.
The sensor provides a raw millivolt (mV) output. For the unit shown in the photo, the sensitivity is 0.156 mV per klux. At the maximum range of 150 klx, the output reaches 23.4 mV. Because the signal level is relatively low, a high-resolution data logger capable of measuring millivolt signals is required to use this unit effectively.
Related services Daylight reflectance
It is possible to measure the daylight reflectance of a surface using a portable colour meter. For best results, a portable colour meter equipped with an integrating sphere is recommended.
The preferred measurement settings are:
Many colour meters provide two measurement modes:
The difference between the SCI and SCE Y values is equivalent to the specular daylight reflectance.
A: No. The Building and Construction Authority (BCA) requires testing in accordance with ASTM E903. Portable colour meters do not meet this requirement and therefore cannot be used for BCA submissions.
A: Accuracy depends largely on the performance of the instrument.
As a general guideline:
Despite these limitations, the measurements remain useful for preliminary assessments and internal evaluations.
Some online tools are available to convert L*ab results into Yxy colour values. One example is: Convert Lab to Yxy
Related instruments Temperature & humidity
Shown below is a Senseca ECO 130 handheld thermocouple thermometer with AX131-S8-HS-L01-S-MF surface contact probe:
The AX131-S8-HS-L01-S-MF probe is a K-type thermocouple surface contact probe designed for accurate surface temperature measurements. It features a coil spring at the probe tip, which ensures consistent and reliable thermal contact with the measured surface—even on slightly uneven or curved surfaces.
Shown below is a detailed view of the probe tip, highlighting its spring-loaded design for enhanced measurement stability.
Related instruments Temperature & humidity
Shown below is a HD4817TC1.2 relative humidity and temperature transmitter:
Listed below are the key features of the instrument:
This instrument is ideal for industrial, HVAC, or laboratory settings where accuracy and durability are essential. Other configurations are available. Please refer to the datasheet for more options.
Related instruments Airspeed & wind
Shown below is a Senseca HD2303.0 handheld anemometer, connected with an AP472S2 vane probe:
HD2303.0 is a handheld anemometer designed for direct on-screen wind speed readings. Other models with built-in data logging capabilities are also available.
AP472S2 is a 60 mm diameter vane anemometer probe, ideal for quick and reliable outdoor wind measurements.
The probes are interchangeable, and alternative options—such as hot wire anemometers—are available to suit different applications.
Related instruments Airspeed & wind, Wireless & web data loggers
Shown below is an integrated system for indoor air velocity monitoring, ideal for thermal comfort applications:
The system consists of the following components:
The system was integrated by OTM, for easy deployment by the end users. Shown below is a screenshot of the computer software interface:
Related instruments Temperature & humidity
Shown below is a HD208L.1NTV wall-mounted compact temperature & humidity data logger:
The instrument offers the following features:
The instrument is ideal for monitoring indoor environmental conditions. Upon request, it can be supplied with an ISO/IEC 17025 accredited calibration report.
Related instruments Temperature & humidity
Shown below is a Senseca ECO 130 handheld thermocouple thermometer with GTF300 probe:
The ECO 130 is a high-precision, compact thermocouple thermometer made in Germany. It is economically priced and suitable for quick manual measurements, but it does not have a data logging function.
Related instruments Weather station, Airspeed & wind
Below is an all-in-one weather station designed for measuring wind (speed and direction), rain, solar radiation, temperature, and humidity:
The instruments were installed on the rooftop deck of a historical building. A 3-meter-tall pole was used for mounting the anemometer.
The weather station operates independently, powered by a 30 W solar panel. Data is automatically uploaded to a cloud server for remote access.
OTM provides installation and maintenance services for this project.
The following key instruments are used:
