Table of Contents
Advertisement
ORDER CODES FOR TOOLS and ACCESSORIES
MOUNTING BRACKET
CLEANING TOOL KIT
1/2-20UNF
M18x1,5
Connections
The sensors have to be connected as shown in the diagram at chapter 7.
To obtain a higher immunity from field noise, connect the cable shield to the female connector case on sen-
sor side.
Calibration procedure using the magnetic pen/Pin CAL
Bring the system to the working temperature with the transmitter installed and connected to the measure-
ment instrument without any pressure applied.
The measurement chain connected to the transmitter is calibrated as follows:
1) To reset the offset on the instrument by eliminating the thermal drift with the autozero function.
With the sensor installed and the extruder at working temperature, wait until the temperature itself is
stable, with a possible variation of ± 1°C. Consequently Autozero can be activated.
This allows to compensate all the signal drifts caused by tightening and temperature.
Additional Autozero activations could be run once the temperature stability is reached, with ± 1°C of
possible variation.
2) Calibrate the instrument activating the CAL function. The transducer brings its output to the calibration
value shown on the transducer data plate (80% of full scale default, if changed with HART command it
could be different).
With the external Autozero function the calibration procedure is not feasible.
3) If the instrument does not exactly indicate zero, repeat points 1) and 2).
In this way, the instrument is calibrated to give the exact indication in the chosen engineering unit.
Calibration procedure using HART communication
Bring the system to the working temperature with the transmitter installed and connected to the measure-
ment instrument without any pressure applied.
1) Connect Communicator to the loop. In case it's not sure on how to do this, please refer to "Connecting
the HART Handheld Communicator" (Fig. 8.1).
2) Switch on HART Communicator. Please refer to HART Command tree on Ready-to-Use guide.
3) From the Main Menu:
a. Enter Tag (Fast Key 1, 3, 1)
b. Set Pressure Units (Fast Key 1, 3, 3), if needed
c. Set URV (Fast Key 1, 3, 4) if output turndown (rescaling), is needed
d. Perform Autozero (Fast Key 1, 2, 6, 3, 1)
4) Check loop output is zero (4mA).
5) Remove HART Communicator from loop.
80636B_MAN_HMF - HWF_05-2022_ENG
SF 18
CT
12
18
6�3� Wiring and calibration
DUMMY PLUG
1/2-20UNF
M18x1,5
DRILL KIT
1/2-20UNF
M18x1,5
SC
12
18
KF
12
18
13
Advertisement
Table of Contents
