Conductivity/TDS-Digital Monitor/Controller, 121, 4A, PA Options
The unique circuitry of the 750 Series II Conductivity Monitor/controllers guarantees accurate and reliable measurements. Drift-free performance is assured by “field-proven” electronics, including automatic DC offset compensation and highly accurate drive voltage.
Since temperature compensation is at the “heart” of accurate water measurement, all Myron L monitors/controllers feature a highly refined and precise TC circuit. This feature perfectly matches the water temperature coefficient as it changes. All models corrected to 25°C. Uncompensated models are available to conform with USP 25.
A push-to-test button makes setpoint checks easy, while the internal alarm set discourages unauthorized adjustments. Standard on all controller models is a heavy-duty 10-amp output relay, operating on either increasing or decreasing readings. Bright green/red LEDs indicate above or below setpoint readings.
All 750 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., they are suitable for panel, bench, or surface mounting.
- 121: 0-2000 microsiemens
- 4A: 4-20mA Self-Powered Isolated Output Module
- PA: 70dB Piezo Electric Alarm (mounted on front panel)
- 3 1⁄2in digit LC-Display
- Automatic temperature compensation to 25°C
- Isolated 0-10 VDC Recorder Output standard
- IP65/NEMA 4X water-resistant and corrosion-proof enclosure
- Single setpoint/alarm
- Adjustable setpoint hysteresis
- Solid State 24 VDC Output
- 10-amp relay operates on choice of increasing or decreasing reading
- LEDs show “above/below” Alarm/control status
- Push-to-test setpoint check
- Internal setpoint discourages unauthorized adjustment
- Selectable 115/230 VAC
- CE Approved
- Unique, easily installed sensor