水智库平台

Colorimeter needs to be cleaned monthly or as needed
Reagents
Replace buffer and indicator reagents every two months.
Discard old containers and any unused contents.
Standardization
Standardization must be performed after reagent installation or when an optical system component has been replaced.
Replace pump tubing
Every 6 months < 27oC
Every 3 months > 27oC
Replace remaining instrument tubing annually

One SPDT alarm relay for external annunciator or automatic water softener shutoff/regeneration cycle
2 consecutive cycles above set point activate alarm
1 cycle below set point cancels alarm
NO 4-20mA output

±10% of set point (0.3-2mg/L range)
±4% of set point (5-100mg/L range)

5 – 40oC

1.9 minutes ±5% (50 Hz)

±25% of set point

0.3, 1, 2, 5, 10, 20, 50, 100 mg/L as CaCO3

100 to 230 VAC 50/60Hz

500mL of each reagent every two months