HP-480TP

Industrial pH meter - Industrial time sharing proportional control

The HP-480TP industrial pH meter 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.

Segment: Process And Environment

Division: Process Water

Manufacturing Company: 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	pH 0 to 14: resolution of 0.01 pH Temperature 0 to 100: resolution of 1 °C (selectable)
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
Repeatability	Within ±0.05 pH of the full scale (by equivalent input)
Linearity	Within ±0.05 pH of the full scale (by equivalent input)
Contact output	Output: 2 points Alarm contact output (R1 and R2) Contact type: relay contact, SPDT (1c) Contact capacity: 240 VAC, 3 A and 30 VDC, 3 A (resistance load) Contact function: selectable from upper / lower limit operation (ON / OFF control), alarm, and maintenance.
Control action	ON / OFF control Time sharing proportional control
Calibration function	Two-point automatic calibration or manual calibration Temperature calibration (one point)
Transmission output hold function	Just before hold Optional value hold Continuous Selectable from the above (However, only the just before hold is available in the maintenance mode.)
Self-diagnosis function	Calibration failure Electrode self-check Outside of the measuring range Transducer error
Temperature compensation element	Selectable from compensation ON (500 Ω (25 °C), 6.8 kΩ (25 °C), 350 Ω (25 °C), 1 kΩ (0 °C) or 10 kΩ (25 °C)) and compensation OFF
Power supply	Rated voltage 100 to 240 VAC, 50/60 Hz, 10 VA (max.)
Structure	Indoor-use panel installation type Panel: IP65 drop-proof structure
Protective structure	Panel: IP65 (IEC60529, JIS C0920)
Conforming standards	CE Marking FCC Rule
External dimensions	48 (W) x 96 (H) x 115 (D) mm Case depth: approx. 105 mm
Mass	Approx. 400 g