Myron L Company 758II-123-45BL Conductivity/TDS Monitor Controller

The Myron L Company 758II-123-45BL is a precision conductivity/TDS monitor and controller designed for demanding industrial and environmental applications. With a wide measurement range from 0-5000 µS and 34 selectable conductivity/TDS ranges, this instrument provides accurate readings from 0-1 µS/ppm to 0-200 mS/ppt. The 4.5-digit backlit LCD ensures clear visibility in low-light conditions, while automatic temperature compensation to 25°C maintains accuracy across varying temperatures.

Built for reliability, the 758II-123-45BL features an IP65/NEMA 4X water-resistant and corrosion-proof enclosure, making it suitable for harsh environments. The built-in electronic calibration simplifies maintenance, and the isolated 0-10 VDC recorder output allows for seamless data logging. The controller includes a single setpoint/alarm with adjustable hysteresis, a solid-state 24 VDC output, and a 10 amp relay that can be configured for increasing or decreasing readings. LEDs indicate alarm/control status, and a push-to-test function verifies setpoint operation.

Key Features & Highlights

• 34 Conductivity/TDS ranges: 0-1 µS/ppm to 0-200 mS/ppt
• 4.5-digit backlit LCD display for easy reading
• Automatic temperature compensation to 25°C
• Isolated 0-10 VDC recorder output standard
• IP65/NEMA 4X water-resistant and corrosion-proof enclosure
• Built-in electronic calibration
• Single setpoint/alarm with adjustable hysteresis
• Solid-state 24 VDC output and 10 amp relay
• Selectable 115/230 VAC operation
• CE certified
• Reliable, easily installed sensors

Applications

This monitor/controller is ideal for water treatment, reverse osmosis systems, cooling towers, boiler water monitoring, and industrial process control where precise conductivity or TDS measurement is critical. Its robust construction and versatile output options make it suitable for both standalone and integrated control systems.