The sensor can be used for an extended period of time
The sensor unit can regenerate the cathode electrode, allowing for long-term sensor usage.
Product name
Industrial Residual Chlorine Meter
Model
HR-480
Measurement method
Galvanic cell method
Measuring range
0 to 2 mg/L
0.01 mg/L resolution (number of decimal places selectable between 1 and 2)
Repeatability
Within ±0.05 mg/L (with equivalent input)
Linearity
Within ±0.05 mg/L (with equivalent input)
Transmission output
4 mA to 20 mA DC, input/output isolated type Maximum load resistance 900 Ω Transmission output range: freely selectable within the measurement range.
Contact output
Outputs: 2 points Alarm contact output (R1 and R2) Contact type: relay contact, SPDT (1c) Contact rating: 240 V AC, 3 A and 30 V DC, 3 A (resistance load) Contact function: selectable from upper/lower limit operation (ON/OFF control), alarm, and maintenance.
Calibration function
Zero calibration (zero adjustment omissible) Span calibration (calibration by compariing with DPD tester)
Transmission output hold feature
Previous value hold Optional value hold Continuous Selectable from the above (However, only the previous value hold is available in the maintenance mode.)
Self-diagnosis function
Calibration function Zero error Sensitivity error Outside of the measuring range Converter error
Ambient temperature
−5℃ to 45℃
Relative humidity
20% to 85% (without dew condensation)
Storage temperature
−25℃ to 65℃
Power supply
Rated voltage 100 V AC to 240 V AC, 50/60 Hz, 10 VA (max)
Structure
Indoor-use panel installation type Panel case: ABS, Terminal: PBT Panel: IP65 dust and water proof structure
Protective structure
Panel: IP65 (IEC60529, JIS C0920) Rear case: IP20 Terminal: IP00 Class II device (IEC61010-1) Pollution level 2 (IEC61010-1)
Conforming standards
CE Marking
EMC Directive: EN61326-1 Low Voltage Directive: EN61010-1
FCC Rule
FCC Part15
External dimensions
48 (W) mm × 96 (H) mm × 115 (D) mm Case depth: approx. 105 mm
Mass
Approx. 400 g
Compatible sensor
RS-1
Measuring target
Free residual chlorine
Water sample requirements
pH6 to pH8 (constant) Temperature 0℃ to 40℃ (constant)