Lutron pH Meter – Model BPH‑231

Lutron pH  Meter – Model BPH‑231

Lutron pH & ORP Meter – Model BPH‑231

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Product Description (bullet‑point style) 

• Dual‑Function Instrument – Measures both pH (0 – 14.00) and ORP / mV (±1999 mV) in one rugged bench unit.

• High Accuracy & Resolution – ±0.02 pH (±2 dgt) with 0.01 pH resolution; ±0.5 % mV (±2 dgt) with 1 mV resolution for precise chemical control.

• Automatic 3‑Point Calibration – Quick push‑button calibration at pH 7, pH 4, and pH 10 assures long‑term stability.

• ATC or Manual Temperature Compensation – Internal menu allows 0 – 100 °C manual setting; plug in optional probe (TP‑07) for 0 – 65 °C automatic compensation.

• Real‑Time Data Logger – Built‑in memory stores up to 16,000 time‑stamped readings; choose 1 s to 8 h 59 m 59 s intervals or manual capture.

• Large Back‑Lit LCD – 82 × 61 mm display with green backlight offers clear viewing in low‑light labs and plant floors.

• Max/Min Capture & Data Hold – Instantly recall peak values or freeze a live reading for notation.

• Microprocessor LSI Circuitry – Ensures fast response and excellent long‑term accuracy.

• PC Connectivity – RS232 & USB ports for direct export; compatible with optional SW‑U801‑WIN or SW‑DL2005 software.

• Energy‑Smart Operation – Auto power‑off plus two power modes (AA batteries × 8 or 9 V adapter).

• Robust Construction – 225 × 125 × 64 mm housing, 1.05 kg; built for lab, industrial, and field environments.

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Key Specifications Lutron pH Meter – Model BPH‑231

• pH Range / Resolution: 0 – 14.00 pH / 0.01 pH

• ORP Range / Resolution: ±1999 mV / 1 mV

• Accuracy: pH ±(0.02 pH + 2 dgt); ORP ±(0.5 % + 2 dgt)

• Input Impedance: 10¹² Ω

• Temperature Comp.: Manual 0 – 100 °C; Auto 0 – 65 °C with TP‑07

• Data Memory: 16,000 points, real‑time clock stamped

• Power: 8 × AA batteries or optional 9 V DC adapter

• Operating Conditions: 0 – 50 °C; < 80 % RH

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What’s in the Box

• BPH‑231 meter

• Instruction manual

(Electrodes, ATC probe, buffers, cables, software, and carrying cases available separately.)

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Summary

The Lutron BPH‑231 delivers laboratory‑grade accuracy for both pH and ORP, 3‑point auto‑calibration, and a powerful 16 k‑point real‑time data logger— all displayed on a bright, oversized LCD and exportable via RS232/USB. Its combination of precision, traceable logging, and flexible temperature compensation makes it the go‑to benchtop meter for QC labs, wastewater plants, beverage production, research facilities, and any environment where reliable electrochemical measurements are critical.