The Testo 511 differential pressure gauge is quoted at 1380-1400 yuan in Beijing, 1,000-1200 yuan in Guangzhou, 1320-2080 yuan in Dongguan, and 1,000-1480 yuan in Shanghai.
Testo 511 differential pressure meter description:
Range: 300 to 1200 hPa
Resolution: 0.1 hPa
Accuracy: 3.0 hPa
Units: hPa, mbar, Pa, mmH2O, mmHg, inH2O, inHg, psi, m, ft
Operating temperature: 0～+50°C
Battery Type: Alkaline Battery (2 AAA)
Battery life: 500 hours (normal use, off backlight)
Sodium Dichloroisocyanurate (SDIC) widely applied for the sterilization of swimming pool and drinking water, or fighting against infectious diseases, or act as disinfectant in raising silkworm, livestock, poultry and fish. Other applications of SDIC are found in wool shrinkage, textile bleaching, and industrial circulating water cleaning. SDIC is normally supplied in powder and granular, tablets are also available on request. Stabilised chlorine granular (dichlor) are used very widely to chlorinate swimming pool water. The product has high efficiency and constant performance and has no harm to human beings.