Myron L Ultrameter II 4P Conductivity / TDS / Resistivity / Temperature Meter
The Myron L Ultrameter II 4P is a rugged, one-hand handheld instrument that measures conductivity, TDS, resistivity and temperature in a single dip. Readings are delivered to ±1% of reading — not of full scale — using a four-electrode conductivity cell that resists polarization and holds its stability with very little maintenance. Ranging and temperature compensation are fully automatic, and the four-digit display resolves values up to 9999.
Application
Built for the field and the plant floor: RO and DI system monitoring, cooling towers and boilers, wastewater, hydroponics and agriculture, ultrapure water checks, and any routine QC round where a technician needs a fast, defensible conductivity or TDS number. The IP67 / NEMA 6 housing is waterproof and buoyant to 3 ft (1 m), so a dropped meter in a wet well is not a lost meter. A 100-reading memory with real-time date and time stamp keeps a record of each round, and auto-shutoff stretches the single 9 V battery to roughly 100 hours of use.
Features
- Conductivity, TDS, resistivity and temperature in one instrument
- ±1% of reading accuracy; four-electrode conductivity cell
- Three solution models — KCl, NaCl and 442 Natural Water — plus user-adjustable conductivity/TDS ratio
- Automatic temperature compensation, user adjustable up to 9.99%/°C or disabled entirely
- 100-reading memory with date/time stamp; non-volatile memory survives battery changes
- Factory calibrated with NIST-traceable solutions
- Waterproof, buoyant IP67 / NEMA 6 case
Model options
- 4PII — standard Ultrameter II 4P
- 4PII-BD — bluDock-enabled, for wireless transfer of stored readings to a PC or mobile device
Documentation
Replacement sensors, calibration solutions, cases and spare parts: see our Myron L Parts & Accessories collection.