HORIBA HP-480 pH meter (0 pH ~ 14 pH)

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.

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.

Temperature compensation element: Selectable from compensation ON (350 Ω (25℃), 500 Ω (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.).

Construction: Panel-mounting type for indoor use.

Panel case: ABS.

Terminal: PBT.

Panel: Water-resistant structure.

Protection structure:

Front panel: IP65 (IEC60529, JIS C0920).

Rear case: IP20.

Terminal: IP00.

Class II equipment (IEC61010-1).

Pollution degree 2 (IEC61010-1).

Applicable standards:

CE certification.

EMC Directive: EN61326-1.

Low Voltage Directive: EN61010-1.

RoHS Directive: EN50581.

Immunity (Industrial electromagnetic environment).

Noise increase: ±0.2 pH or less.

FCC Rules: FCC Part 15.

External dimensions: 48 (W) × 96 (H) × 115 (D) mm.

Case depth: Approx. 105 mm.

Weight: Approx. 400 g.