Myron L 720II ORP Controller

Accurate and reliable measurements; no ground-loop or noise issues.


The advanced “isolated” circuitry of Myron L’s 720 Series II ORP Monitor and controllers guarantees accurate and reliable measurements while eliminating ground-loop and noise issues.

The unique sensor preamp allows for longer distances between the sensor and the monitor/controller without the loss of accuracy or reliability.

All Myron L  monitor/controllers feature a highly refined and precise Temperature Compensation circuit that matches the NERNST equation correcting the displayed reading to 25°C. The TC may be disabled to conform to USP requirements. Features include:

  • Built-in electronic calibration allows for fast quality checks without buffers. (Note: for maximum system accuracy buffers are recommended).
  • A push-to-test button for easy setpoint checks, while the internal alarm set discourages unauthorized adjustments.
  • A heavy-duty 10 amp output relay operating on either increasing or decreasing readings. Bright green/red LEDs indicate above/below setpoint readings.
  • All 720 Series II models feature an IP65/ NEMA 4X water-resistant and corrosion-proof rated enclosure. Compact in size, at 152 x 122 mm/6 x 4.8 in., the 720 Series II models are suitable for panel, bench, or surface mounting.

Myron L 720II Orp Controller
Model Number Description Price
728II Monitor/Controller, ORP,?DIG $842
728II-4A Monitor/Controller, ORP, DIG, 4-20mA OTPT $1068.5
728II-4A-PC Monitor/Controller, ORP, DIG, 4-20mA OTPT, PWR CORD $1091.5
728II-PA Monitor/Controller, ORP, DIG,?~70dB ALRM $909.5
728II-SC Monitor/Controller, ORP, DIG, 2ND ALARM MOD $1043.5
728II-SC-PC Monitor/Controller, ORP, DIG, 2ND ALARM MOD, PWR CORD $1066.5
728OB Monitor/Controller, ORP,?CIRCUIT BRD, DIG $531.5
729II-4A Monitor Only, ORP, DIG, 4-20 mA OTPT $955.5
729OB Monitor Only, ORP, CIRCUIT BRD, DIG $448