Greenmark, BCA & HVAC Sensors

The global movement towards sustainability and green initiatives is more crucial now than ever before. As a dedicated partner in this journey, ISOLAB has been actively contributing to the Green Mark movement since 2007.

We take pride in accurately calibrating various NTC thermistors, including 1kΩ, 5kΩ, 10kΩ, and 30kΩ green mark temperature sensors, with an impressive lowest measurement uncertainty of 3 mK (0.003°C). With over 5,000 green mark sensors calibrated, we are committed to upholding the highest standards in greener systems.

Compliant with Singapore Standard SS 591:2021 annex C

Singapore Standard SS 591: 2013, Page 17 Clause(s) The maximum allowable uncertainty of the temperature measurement system shall be +0.05°C over the working range of 0°C to 40°C. The uncertainty of the temperature measurement shall include the uncertainty of the entire chain of the temperature measurement i.e; the temperature sensor, transmitter, wiring, data acquisition system etc. Each temperature sensor shall be individually calibrated against a measurement standard with a maximum uncertainty rating of +0.01°C. Fixed points calibration method is one of the recommended options to be used in the calibration of the temperature sensors. It is recommended that the following references be used during the calibration:
a) Water triple point at 0.01°C
b) Standard platinum resistance thermometers (SPRT) with temperature-controlled bath at 15.00°C; and
c) Gallium fixed point cell at 29.765°C