Adjusting The Measurement Range Of A Hart; Checking / Adjusting Hart; Transmitter Ma Output - Presys TA-60NL Technical Manual

Temperature advanced calibrators

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PRESYS

 Instruments

MONITOR tab. In this screen are shown the value of the primary variable (PV) read by

HART

(digital), the current that the transmitter wants to generate (AO - DIGITAL

OUTPUT), and the current measured by the TA Calibrator (ANALOGIC READ). Set the

block temperature pressing OUTPUT and adjust the transmitter range pressing the

↓ Inf Range and ↑ Sup. Range buttons.

Fig. 23 - Adjusting the Measuring Range of the HART

In DEFAULT SETTINGS, the output current of the HART

trim) can be adjusted according to current measured by the TA Calibrator. You can make

this adjustment only when the TA Calibrator is connected to a single transmitter with

address 0, in the mA INPUT + HART

measure the current to make the adjustment.

Before performing the adjustment, a transmitter output current check can be

performed by pressing the CHECK button. The transmitter will generate fixed current (4,

8, 12, 16, 20 mA) and the calibrator will show the measured values for each point.

To adjust automatically, simply press the AUTO button. The calibrator will send

the command to the transmitter to generate 4 and 20 mA (fix), makes the measurement

of these points, and adjusts the output (trim). The adjustment is completed when D/A

Adjustment Completed message appears.

The LEAD TIME sets each points stabilization time (in seconds).

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option of connection, since the calibrator needs to

Transmitter with Reference

transmitter (output

TA-60NL

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