Page.
7
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12
Doc. no. : HTMF_Kor_2016, Rev. 0
Issued date : 2016. 11
HITROL Co., Ltd
The range can be adjusted with the HHT-2000 (loader) menu.
4.4
Adjust and check the F/T
Connect the loader to the main board, and set the input/output and the factor value of the
F/M.
4.4.1
Input calibration
1)
Zero and span calibration
a.
Set the resistance value of the simulator to 1000 Ω, wait for approximately 10 seconds in
the
Sensor01 Zero Cali
menu of the loader, and press
ENT
.
b.
Set the resistance value of the simulator to 1500 Ω, wait for approximately 10 seconds in
the
Sensor01 Span Cali
menu of the loader, and press
ENT
.
c.
After pressing
ENT
, in the
Sens 01 R Check
menu, check if the same resistance values of
1000Ω, 1250Ω, and 1500Ω of the simulator are indicated.
d.
If a large difference is observed, adjust the resistance values of the simulator, and repeat
the above processes.
4.4.2
Line calibration
1)
In the
Sens 01 Line Cali
menu of the loader, measure the line resistance, and press
ENT
.
4.4.3
Output calibration
Check that proper output is measured by the multimeter connected to the output
terminals.
1)
PWM1 04 mA
Check that the indicated value at the multimeter connected to the output terminals of the
terminal block is 4 mA ± 0.1%. When the value is beyond the range, adjust the counter value
of the
PWM1
04 mA Mode
that is indicated in the loader, press
ENT
, and check the indicated
value.
2)
PWM1 20mA
Check that the indicated value at the multimeter connected to the output terminals of the
terminal block is 20 mA ± 0.1%. When the value is beyond the range, adjust the counter
value of the
PWM1
20 mA Mode
that is indicated in the loader, press
ENT
, and check the
indicated value.
4.4.4
Set the factor.
1)
Enter the △R and the factor value, which are calculated in accordance with the L/E test
procedures, into the F/T by using the loader (HHT-2000).
a.
Enter the
PWM R Data
.
Enter the △R of the performance test report that is calculated in accordance with the F/E
test procedures.
b.
ALPHA
: This is the temperature compensation coefficient. The input effective range is 0–
60, and the default value is 30.
c.
CUTOFF
: This is for the function that enables the user to set a certain cutoff range, such
