Product name | Pulse proportional control pH meter for industrial use |
Model | HP-480PL |
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, 0.3 A and 30 V DC, 0.3 A (resistance load) Contact function: selectable from upper/lower limit operation (ON/OFF control), alarm, and maintenance. |
Control actions | ON/OFF control | - Upper/lower limit setting range: 0.00 pH to 14.00 pH
- Control width: 0.00 to 4.00 pH (±0.00 pH to ±2.00 pH)
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Pulse proportional control | - Upper/lower limit setting range: 0.00 pH to 14.00 pH
- Maximum number of pulse output: Freely selectable in the range of
1 SPM to 360 SPM. - Proportional band: 0.01 pH to 4.00 pH
- Control output shift function: 0% to 50%
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Calibration function | Two-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.
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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 AC to 240 V AC, 50 Hz/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 | FCC Rule | FCC Part15 |
External dimensions | 48 (W) × 96 (H) × 115 (D) mm Case depth: approx. 105 mm |
Mass | Approx. 400 g |