E+H Liquiline CM444 Transmitter

Fits multiparameter liquid analysis panels that need a field transmitter with up to four Memosens inputs (pH/ORP, conductivity, DO, chlorine, turbidity, etc. per sensors) and HART or industrial Ethernet/fieldbus outputs.

Key advantages

Up to 4 Memosens inputs — Multiparameter pH/ORP, conductivity, DO, chlorine, turbidity and more per sensors.
Protocol choice — Optional HART current outs, relays, PROFIBUS DP, Modbus, EtherNet/IP, PROFINET, web server.
IP66/67 / NEMA 4X — Field transmitter housing class with graphic soft-key display.
AC or 24 VDC supply — 100–230 VAC or 24 VDC packages; optional Ex-i Memosens modules.

Typical applications

Water and process liquid analysis panels needing one transmitter for multiple Memosens sensors.
Skids standardized on Liquiline multiparameter architecture.
Installs that need Ethernet/fieldbus analytical transmitters rather than single-loop two-wire.

Selection guide

Role — Multiparameter transmitter; CM444 up to 4 Memosens inputs (pH/ORP, conductivity, DO, chlorine, turbidity, etc. per sensors).
Accuracy — Measurement accuracy depends on connected Memosens sensor; TI gives current I/O error tables.
Outputs / comms — Active current outputs (optional HART); relays; HART/PROFIBUS DP/Modbus/EtherNet/IP/PROFINET; web server.
Supply — 100–230 VAC 50/60 Hz (±15%) max 73 VA; or 24 VDC max 68 W.
Housing / IP — Field housing (polycarbonate class) per TI; IP66/67 (IEC 60529); NEMA Type 4X (UL 50E).
Ambient — Generally −20 to 55 °C (−4 to 131 °F); some packages −20 to 50 °C; storage −40 to +80 °C.
Display — Graphic display with soft keys; menu-guided operation; data logbook graphics.
Hazardous area — Optional Ex-i Memosens modules (2DS Ex-i) — see TI approvals.
Approvals — CE; UL; CSA.
Notes — Transmitter-only — process_connection/wetted blank. Specs from TI00444C EN 29.25-00.

Common mistakes

Ordering transmitter-only and forgetting matching Memosens sensors and cable lengths.
Leaving protocol blank — HART vs PROFIBUS DP vs Modbus vs EtherNet/IP vs PROFINET changes the I/O package.
Ignoring supply choice (100–230 VAC vs 24 VDC) versus panel power available.
Assuming Ex-i Memosens is included — optional 2DS Ex-i modules per TI.
Expecting wetted process connection on the transmitter — CM444 is transmitter-only .

When to RFQ / what to tell us

Number of Memosens channels (up to 4), sensor types, and cable lengths.
Protocol (HART / PROFIBUS DP / Modbus / EtherNet/IP / PROFINET), supply (AC vs 24 VDC), Ex-i need.
Quantity, ship-to, panel mounting preferences.

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Specs

Spec	Value
SKU	45997
Brand	Endress+Hauser
Model	Liquiline CM444
Product type	analytical_transmitter
Measuring range	Multiparameter transmitter; CM444 up to 4 Memosens inputs (pH/ORP, conductivity, DO, chlorine, turbidity, etc. per sensors)
Accuracy	Depends on connected Memosens sensor; TI gives current I/O error tables
Output / communication	Active current outputs (optional HART); relays; HART/PROFIBUS DP/Modbus/EtherNet/IP/PROFINET; web server
Supply	100–230 VAC 50/60 Hz (±15%) max 73 VA; or 24 VDC max 68 W
IP rating	IP66/67 (IEC 60529); NEMA Type 4X (UL 50E)
Ambient temperature	Generally −20 to 55 °C; some packages −20 to 50 °C; storage −40 to +80 °C
Display	Graphic display with soft keys; menu-guided operation; data logbook graphics
Hazardous area	Optional Ex-i Memosens modules (2DS Ex-i) — see TI approvals
Approvals	CE; UL; CSA
Notes	Transmitter-only. Specs from TI00444C EN 29.25-00 (2025-10-01).

Documents

FAQ

Q: How many Memosens inputs does CM444 take? A: Up to 4 Memosens inputs — confirm channel count and sensor types on the RFQ.

Q: Is this a sensor or a transmitter? A: Transmitter-only. Sensors and process connections are separate line items.

Q: What should I send for a quote? A: Channels, sensor types, protocol, supply, Ex-i need, quantity. Compatible with systems using Endress+Hauser Liquiline CM444 — we do not claim authorized-dealer status.