Rosemount 644 Temperature Transmitter

Rosemount1 configuration

Configure Your Rosemount 644 Temperature Transmitter

Compact head-mount temperature transmitter for RTD, thermocouple, mV, or ohms inputs. HART or PROFIBUS PA output. Pairs with the Rosemount 0085 pipe-clamp sensor or thermowell-mounted RTD/TC. The cost-effective alternative to the 3144P for single-input applications.

Required Specifications

3 of 3 selected

Transmitter Type*

Output Protocol*

Product Certifications*

Rosemount 644 Temperature Transmitter Part Number

644HANA

Configured list price:$1,297.15Rosemount list price. Your Valley sales engineer confirms final pricing on the quote.Emerson adds a 4.9% Rosemount surcharge (effective Sep 1, 2026), about $63.56 on this configuration, as a separate line on the order.

Configuration Summary: Rosemount 644 Temperature Transmitter

Base: $1,297.15

Transmitter Type:: HDIN A head mount; single sensor input
Output Protocol:: A4-20mA with digital signal based on HART protocol
Product Certifications:: NANo approval

Rosemount is configurator-heavy and quote-only. Valley Instrument verifies option compatibility, lead time, and pricing before confirming your order.

Pre-configured Options(1)

Rosemount

644 Temperature Transmitter

Versatile temperature transmitter — head-mount (DIN A), field-mount, or rail-mount form factors with single or dual sensor input. HART 4-20 mA (all variants), FOUNDATION Fieldbus or PROFIBUS PA (single-sensor head-mount only). The workhorse temperature transmitter for general process service: pairs factory-direct with any Rosemount sensor (214C RTD, 0185/186 thermocouples) and thermowell. LCD display + LOI option, NAMUR alarm levels, and Hot-Backup / sensor-drift diagnostics on dual-sensor variants.

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