Hefer

Hefer 2030 Series Industrial Transmitters

Hefer PH-2030 (pH), MV-2030 (ORP), C-2030 (conductivity) and CL-2030 (chlorine / dissolved ozone): DIN-rail mounted 2-wire process transmitters with a 4-20 mA output and a 10-30 VDC supply.

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Technical specifications

Hefer C 2030 DIN-rail transmitter: a light grey housing with an LCD, a TEMP button, zero and sensitivity trimmers, and green terminal blocks along the bottom

Models	PH-2030 (pH), MV-2030 (ORP), C-2030 (conductivity), CL-2030 (chlorine / dissolved ozone)
Output signal	2-wire 4-20 mA with isolated output; the CL-2030 manual describes it as 4/20 mA loop powered
Supply	10-30 VDC
Mounting	DIN rail; adding E to the end of the part number gives an IP-65 enclosure
Temperature input	Pt100 on the PH-2030 and C-2030; 2- or 3-wire Pt100 RTD on the CL-2030
CL-2030 sensor inputs	3-wire potentiostatic (PME), 2-wire polarographic or 2-wire galvanic sensor; selectable scales 0-1.999, 0-19.99 and 0-1999

The Hefer 2030 series is a family of DIN-rail mounted industrial process transmitters: PH-2030 (pH with Pt100), MV-2030 (ORP), C-2030 (conductivity with Pt100) and CL-2030 (chlorine / dissolved ozone, with a 3-wire PME potentiostatic input or a 2-wire polarographic or galvanic sensor input). They are 2-wire transmitters with a 4-20 mA output and a 10-30 VDC supply; adding an “E” to the part number gives an IP-65 enclosure. As the Hefer distributor in Turkey, Mikron Proses (Üsküdar, Istanbul) supplies, installs and commissions the transmitters, including panel integration.

The 2030 series converts the signals of pH, ORP, conductivity and chlorine / dissolved ozone sensors into a standard 4-20 mA current loop. It is supplied with 10-30 VDC; the measured value is shown on a front-panel LCD, and the temperature can be read by pressing a button.

Series models

PH-2030: 4-20 mA pH transmitter with a pH sensor and a Pt100 temperature input.
MV-2030: 4-20 mA transmitter for ORP (redox) sensors.
C-2030: 4-20 mA transmitter with a conductivity sensor and a Pt100 temperature input.
CL-2030: 4/20 mA transmitter for chlorine and dissolved ozone; it works with a 3-wire potentiostatic sensor (Hefer PME9092), a 2-wire polarographic sensor or a galvanic sensor. The MC1 / MC3 flow cell is used for the PME sensor.

For chlorine dioxide, and for applications that need a controller in a single box, Hefer’s ready-made 3000-C series analyzers (CL-3000C, CLO-3000C and O3-3000C) are the preferred choice. See the Hefer CL series chlorine analyzers, the Hefer CLO-3000C chlorine dioxide analyzer and the Hefer O3-3000C ozone analyzer.

Applications

Transmitting a 4-20 mA analytical signal to control and data acquisition systems
Connection to the analog input cards of central controllers such as the Walchem Intuition-6/9
Compact DIN-rail mounting in water treatment and disinfection panels

Datasheets and manuals

Documents were last compared with the manufacturer's source on 2026-09-26.

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Describe your application; we will help you identify the right model and configuration.