□ FUNCTIONAL SPECIFICATIONS

Output “◊”

For 4 to 20 mA HART / BRAIN

(Output signal code D and J)

Two wire 4 to 20 mA DC output with digital

communications, linear or square root programmable.

BRAIN or HART FSK protocol are superimposed on

the 4 to 20 mA signal.

Output range: 3.6 mA to 21.6 mA

Output limits conforming to NAMUR NE43 can be

pre-set by option code C2 or C3.

For 1 to 5 V HART

(Output signal code Q)

Three or four wire low power 1 to 5 V DC output with

HART, linear or square root programmable.

HART protocol are superimposed on the 1 to 5 V DC

signal.

Output range: 0.9 V to 5.4 V DC

Failure Alarm

For 4 to 20 mA HART / BRAIN

(Output signal code D and J)

Analog output status at CPU failure and hardware

error;

Up-scale: 110%, 21.6 mA DC or more (standard)

Down-scale: −5%, 3.2 mA DC or less

For 1 to 5 V HART

(Output signal code Q)

Analog output status at CPU failure and hardware

error;

Up-scale: 110%, 5.4 V DC or more (standard)

Down-scale: −5%, 0.8 V DC or less

Damping Time Constant (1st order)

Amplifier damping time constant is adjustable from

0.00 to 100.00 s by software and added to response

time.

Note: For BRAIN protocol type, when amplifier software

damping is set to less than 0.5 s, communication

may occasionally be unavailble during the

operation, especially while output changes

dynamically. The default setting of damping

ensures stable communication.

Update Period “◊”

Differential pressure: 45 ms

Static pressure: 360 ms

Zero Adjustment Limits

Zero can be fully elevated or suppressed, within the

lower and upper range limits of the capsule.