Đo pH

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SẢN PHẨM
  • Bộ đo pH
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    Liên hệ
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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. HP-480TP is a pH meter with a time sharing proportional control function, making it ideal for tasks such as interval processing in any type of control process. pH: 0 - 14 Temperature: 0 - 100 ℃
Product name Industrial pH meter
Model HP-480TP
Measuring range 0 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 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.
Control operations

ON/OFF control

  • Upper and lower limits setting range: 0.00 pH to 14.00 pH
  • Control width: 0.00 pH to 4.00 pH (±0.00 pH to ±2.00 pH)
    Time-division proportional control
  • Upper and lower limits setting range: 0.00 pH to 14.00 pH
  • Proportional band: 0.00 pH to 4.00 pH
  • Cycle time: 5 s to 300 s
  • Control output shift capability: 0% to 50% of shift volume for the cycle time
  • Self-extending cycle time capability: The cycle time is extended automatically when the deviation value enters a set range (F zone) in proportion to the deviation value (This feature has no effect when the shift function has been enabled).
  • F zone: 1% to 100% of the proportional band (Self-extension of the cycle time starts working when the deviation enters the above range).
  • Upper limit for extending the cycle time: 0 s to 300 s.
  • Maximum control volume: 50% to 100% (To be applied regardless of whether the measured value is in the proportional band or not).
 
Calibration function 2 points automatic calibration or manual calibration.
2 points 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 humidity 20% to 85% (without dew condensation)
Storage
temperature
−25℃ to 65℃
Power supply Rated voltage 100 V to 240 V AC, 50Hz/60 Hz, 10 VA (max.)
Structure Indoor-use panel installation type
Panel case: ABS, Terminal: PBT
Panel: 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 Directives: EN61326-1
Low Voltage Directive: EN61010-1
RoHS Directive: EN50581
Immunity
(Industrial electromagnetic environment)
Noise increase ±0.2 pH or less
FCC Rule FCC Part15
External
dimensions
48 (W) mm × 96 (H) mm × 115 (D) mm
Case depth: approx. 105 mm
Mass Approx. 400 g
SẢN PHẨM KHÁC