Emerson 644 manual Appendix a Specifications Reference Data, FunctionalInputs

Reference Manual

00809-0400-4728, Rev AA June 2011

Rosemount 644

Appendix A Specifications and

Reference Data

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-1 Foundation Fieldbus Specifications . . . . . . . . . . . . . . . . . page A-4 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-6 Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-9 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-17

SPECIFICATIONS

FunctionalInputs

User-selectable; sensor terminals rated to 42.4 Vdc. See “Accuracy” on page A-6for sensor options.

Output

Single 2-wired device with a completely digital output with FOUNDATION fieldbus communication (ITK 5.1 compliant).

Isolation

Input/output isolation tested to 500 Vdc/ac rms (707 Vdc) at 50/60 Hz

Local Display

The optional five-digit integral LCD Display includes a floating or fixed decimal point. It can also display engineering units (°F, °C, °R, K, Ω, and millivolts), milliampere, and percent of span. The display can be configured to alternate between selected display options. Display settings are preconfigured at the factory according to the standard transmitter configuration. They can be reconfigured in the field using FOUNDATION fieldbus communications.

Humidity Limits

0–99% relative humidity

Update Time

≤0.5 seconds

Accuracy (default configuration) PT 100

FOUNDATION fieldbus: ±0.15 °C

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