HP-480

Panel-mount Type pH Meter (Four-Wire Transmission)

HP-480 connects pH sensor and measures pH and temperature in the sample water. Suitable for monitoring and control of various production processes and wastewater treatment, etc. Many types of electrodes are available to match the sample properties.

Measuring range

pH: 0 - 14
Temperature: 0 - 100 ℃

 

Division: Process Water
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.

 

  • Easy pH correction
    After immersing the pH poles in the standard fluid, simply follow the instructions displayed and press the ENT key.
    The automatic correction process is plain and simple.
  • Automatic diagnosis function for faults in electrode properties
    If there is an asymmetry potential, sensitivity or response speed in correction, the HP-480 automatically determines whether there is a fault in the pH electrodes, and displays an error message.
  • Compatible with five types of temperature compensation element
    Five types of temperature compensation element are supported: 500 Ω, 6.8 kΩ, 1 kΩ, 10 kΩ and 350 Ω.
  • A line-up of lead-free pH electrodes
    Uses lead-free glass. In addition, almost all sections of the pH electrodes, including lead wires and soldered junctions are lead-free.
  • Uses lead-free solder
    To reduce the burden on the environment, lead-free solder has been used to mount the components on the printed circuit board.

 

 

Product nameIndustrial pH meter
ModelHP-480
Measuring range0 pH to 14 pH: 0.01 pH resolution.
Temperature 0℃ to 100℃: 1℃ resolution (selectable display).
Transmission
output
4 mA to 20 mA DC: input/output isolated type
Maximum load resistance: 900 Ω
Transmission
output range
Free
Repeatability and
linearity
±0.05 pH, ±0.08 mA (for transmission output range of 0 pH to 14 pH)
Contact outputOutputs: 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 functionTwo-point automatic calibration or manual calibration.
Two-point automatic calibration: with automatic validation of the electrode characteristics.
  Types of standard solution: pH 2, pH 4, pH 7, pH 9 and pH 10 (JIS)
  Combination of standard solutions: pH 7 and one of the others
  Manual calibration: Freely selectable, but the difference should be over 2 pH.
Temperature calibration (one point).
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
    Asymmetry potential error, sensitivity error, response speed error and standard solution error.
  • Electrode self-diagnosis
    Temperature sensor short-circuit and temperature sensor disconnection.
  • Outside of the measuring range.
  • Converter error.
 
Temperature
compensation
element

Selectable from compensation ON (350Ω (25℃), 500Ω (25℃),1 kΩ (0℃)6.8 kΩ (25℃)
and 10 kΩ (25℃)) and compensation OFF.

Temperature-
compensated
range
0℃ to 100℃
Ambient
temperature
−5℃ to 45℃
Relative humidity20% to 85% (without dew condensation)
Storage
temperature
−25℃ to 65℃
Power supplyRated voltage 100 V AC to 240 V AC, 50 Hz/60 Hz, 10 VA (max.)
StructureIndoor-use panel installation type
  Panel case: ABS, Terminal: PBT
Panel: water proof structure
Protective structurePanel: IP65 (IEC60529, JIS C0920)
Rear case: IP20, Terminal: IP00
Class II device (IEC61010-1)
Pollution level 2 (IEC61010-1)
Conforming
standards
CE MarkingEMC Directive: EN61326-1
Low Voltage Directive: EN61010-1
RoHS Directive: EN50581
Immunity (Industrial electromagnetic environment)
Noise increase ±0.2 pH or less
FCC RuleFCC Part15
External
dimensions
48 (W)  × 96 (H)  × 115 (D) mm
Case depth: approx. 105 mm
MassApprox. 400 g

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