Direct electrode mounting keeps the measuring chain compact and helps bring a stable pH signal into the control system. This head transmitter mounts on pH electrodes and converts the measurement into a 4..20 mA standard signal for the range -1..+15 pH.
The 2-wire output version is designed for straightforward process integration with a 10..30 V DC supply. Its measurement is based on 25 °C, zero-point pH 7.0 and slope 59.2 mV/pH, with 0.2 % accuracy and no compensation. The high input resistance of >1012 Ω supports reliable handling of the electrode signal.
The PVC-U case is compact at approx. 100 g and rated ingress protection (IP) IP65. Electrical connection is made via an 8-pole round socket, M12x1, while the input plug is available for S7/S8 or VarioPin electrode connections.
The transmitter is designed for direct mounting on pH electrodes
provides a 4..20 mA standard signal for -1..+15 pH in 2-wire technology.
The output signal is available at an 8-pole round socket with M12x1 connection.
The transmitter can be configured for electrodes with S7/S8 connection or VarioPin (VP) connection.
For combination electrodes with VarioPin plug, the Pt100 / Pt1000 signal is available 1:1 on the pH40 round plug connector.
The transmitter operates from -10..+60 °C and uses a 10..30 V DC supply
