Panel-mount Type pH Meter (Four-Wire Transmission, Pulse Proportional Control)
HP-480PL industrial pH meter is a pH meter with a pulse proportional control function, which can drive a pulse pump directly.
It connects pH sensor and measures pH and temperature in the sample water.
As the HP-480PL has a high injection resolution per pulse, it can be used to control a pulse pump as part of a system for processing involving fine control of pH values, for example controlling the pH values of microscopic or small samples.
pH: 0 - 14
Temperature: 0 - 100 ℃
|Product name||Pulse proportional control pH meter for industrial use|
|Measuring range||0 pH to 14 pH: 0.01 pH resolution.|
Temperature 0℃ to 100℃: 1℃ resolution (selectable display).
|4 mA to 20 mA DC: input/output isolated type|
Maximum load resistance: 900 Ω
|±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|
|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).
output hold feature
Selectable from compensation ON (350Ω (25℃), 500Ω (25℃),1 kΩ (0℃)6.8 kΩ (25℃) and 10 kΩ (25℃)) and compensation OFF.
|0℃ to 100℃|
|−5℃ to 45℃|
|Relative humidity||20% to 85% (without dew condensation)|
|−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)
|FCC Rule||FCC Part15|
|48 (W) × 96 (H) × 115 (D) mm|
Case depth: approx. 105 mm
|Mass||Approx. 400 g|
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