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.
|Product name||Industrial pH meter|
|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|| |
|Calibration function||Two-point automatic calibration or manual calibration|
Temperature calibration (one point)
Selectable from the above (However, only the just before hold is available in the maintenance mode.)
|Self-diagnosis function|| |
|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|
|External dimensions||48 (W) x 96 (H) x 115 (D) mm|
Case depth: approx. 105 mm
|Mass||Approx. 400 g|
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