The DMM-4000/pH Series are powerful field mounting transmitters incorporating high impendance pH direct input with ATC (Automatic Temperature Compensation).

Transmit the two variables by its dual 0/4 … 20 mA outputs and through RS-485 Modbus Communication. These devices are dedicated specifically to the pH transmission in industrial processes as well as water treatment under PC supervision.

Features

Standard

• Dual Input: 1 x VQ (Variable Measured) + 1 x Pt100 for ATC
• ATC (Automatic Temperature Compensation) wherever applicable
• 2 x 0/4 ... 20 mA Configurable Insulated Analog Outputs
• 2 x SPST relays (1 A, 250 Vac)
• Sensor Test and Sensor Life Time Functions for easy and preventive maintenance
• Enclosure Rating IP65 for Field Mounting
• Power Supply: 85 … 265 VAC
• Mounting on Wall or on Pipes up to 2” (50 mm)
• RS-485 Modbus Communication
• Auxiliary Power Supply Output: 24 VDC, 40/60 mA max.
• Programmable by keyboard or Remote PC
• Display: 4(10mm) + 4(8mm) digits Led

Optional

• Power Supply 12 or 24 Vac/dc
• Sensor cleaning functionality on one of the 2 x SPST relays