Greisinger pH Transmitter without Electrode GPHU 014 MP/BNC (104225)

With an input impedance greater than 10^12 Ohm, this pH transmitter delivers precise signal conditioning for demanding industrial measurements. The GPHU 014 MP/BNC converts pH electrode signals into a linear 0-10 V or 4-20 mA output, selectable via jumper, for seamless integration into control systems.

Overview

The Greisinger GPHU 014 MP/BNC is a panel-mount pH transmitter designed for continuous pH monitoring in process environments. It accepts combined pH electrodes with a BNC connector and provides a galvanically isolated output signal. The device supports 2-point calibration (pH 7.0 and pH 4.0/10.0) and offers manual or automatic temperature compensation via an external Pt1000 sensor (not included).

What stands out

• High input impedance > 10^12 Ohm ensures accurate readings from high-resistance pH electrodes.
• Flexible output: 0-10 V or 4-20 mA, configured by jumper.
• Panel mounting with IP65 front protection for harsh environments.
• Wide power supply range: 12-30 V DC (0-10 V output) or 15-30 V DC (4-20 mA output).

Technical details

• Measurement range: 0.00 to 14.00 pH
• Accuracy: ±0.02 pH
• Electrode connection: BNC socket (pH electrode), MP (reference/ground)
• Operating temperature: 0 to 50 °C
• Storage temperature: -20 to 70 °C
• Housing material: ABS plastic
• Panel cutout: 45.5 x 66.5 mm (H x W)
• No display – transmitter only

Our verdict

A reliable and accurate pH transmitter for industrial applications where a separate display is not required. Its high input impedance and flexible output make it compatible with a wide range of pH electrodes and control systems.