HP-480TP

Panel-mount Type pH Meter (Four-Wire Transmission, Industrial Time sharing Proportional Control)

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.

Unlike commonly used time sharing proportional control functions, whose on-off frequency has generally been fixed, the HP-480TP includes our independently developed control method optimized for pH control, F Zone, whereby it changes its frequency as the difference becomes smaller.

Measuring range

pH: 0 - 14
Temperature: 0 - 100 ℃

Segment: Process And Environmental

Division: Process Water

Fabricant: HORIBA Advanced Techno Co., Ltd.

Time sharing proportional control function with F Zone
Unlike commonly used time sharing proportional control functions, whose on-off frequency has generally been fixed, the HP-480TP includes an control method called F Zone, whereby as the pH difference becomes smaller, it changes not just the time for which the pump injecting pH regulator is on, but also its frequency.
Compatible with five types of temperature compensation elements
Five types of temperature compensation element are supported: 500 Ω, 6.8 kΩ, 1 kΩ, 10 kΩ and 350 Ω.
Easy pH correction
After immersing the pH electrodes in the standard fluid, simply follow the instructions displayed and press the ENT key.
The automatic correction process is plain and simple.
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 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
Conforming standards	FCC Rule	FCC Part15
External dimensions	48 (W) mm × 96 (H) mm × 115 (D) mm Case depth: approx. 105 mm
Mass	Approx. 400 g