4
Specifications
Optical
Light source
Class 1 LED (light emitting diode) with a peak wavelength of 520 nm; 50,000
hours estimated minimum life
Performance
Operating range 0–5 mg/L free or residual chlorine
Accuracy ±5% or ±0.03 ppm whichever is greater
Precision ±5% or ±0.01 ppm whichever is greater
Quantitation limit 0.09 ppm
Cycle time 2.5 minutes
Detection limit 0.03 ppm
Calibration Uses default calibration curve
Power switch User accessible power switch is required
Recorder One 4-20 mA/0–20 mA
Alarm relay outputs
Two SPDT relays, 5A resistive load at 240 V ac. Can function as sample set
point alarms (high or low) or as a system warning indicator or a system alarm
indicator.
Optional external outputs Hach AquaTrend
®
Network Interface
Environmental
Storage temperature range -40 to 60 °C (-40 to 140 °F)
Operating temperature range 5 to 40 °C (41 to 104 °F)
Humidity 90% at 40 °C (90% at 104 °F)
Air purge (optional) 0.1 CFM instrument quality air at 20 psig maximum, ¼-inch OD tubing
Altitude 2000 m (6561 ft)
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