11.- ADJUSTMENT AND CALIBRATION PROCEDURE
11.1.- RTD MODELS
A decade box or RTD simulator is required.
1.- Check that the instrument is not powered.
2.- Connect the RTD simulator or decade box to the signal input connector (See paragraph 8.3).
3.- Remove the rear cover taking off all the screws to obtain access to the control board.
(See page 7 paragraph 7).
4.- Power up the instrument with the appropriate power supply and wait until 3 minutes before to start the adjust.
5.- Adjust the RTD simulator to generate the low signal indicated in
6.- Display must shows the DISPLAY value indicated in
7.- Adjust the RTD simulator to generate the high signal, see
8.- Display must shows the DISPLAY value indicated in
9.- Repeat steps 5 to 8 until the two values are correct.
10.- Check that the linearity remains correct, testing some other points of the range.
11.2.- THERMOCOUPLE MODELS
A Thermocouple simulator with Cold Junction compensation is required.
1.- Check that the instrument is not powered.
2.- Connect the Thermocouple simulator to the signal input connector (See paragraph 8.4).
3.- Remove the rear cover taking off all the screws to obtain access to the control board. (See page 7 paragraph 7).
4.- Power up the instrument with the appropriate power supply and wait until 3 minutes before to
start the adjust.
5.- Adjust the Thermocouple simulator to generate the low signal indicated in
6.- Display must shows the DISPLAY value indicated in
7.- Adjust the Thermocouple simulator to generate the high signal indicated in
8.- Display must shows the DISPLAY value, if not turn the trimmer PT2 located on the Signal Conditioner (See paragraph 10.2) until obtain the DISPLAY value.
9.- Repeat steps 5 to 8 until the low and the high signals are correct.
10.- Check that the linearity remains correct, testing some other points of the range.
TABLE - A
MODEL | LOW SIGNAL | DISPLAY |
|
|
|
|
|
|
M1 | 0°C | 000.0 |
M2 | 0°F | 0000 |
M3 | 0°F | 000.0 |
J1 | 0°C | 0000 |
J2 | 32°F | 0032 |
K1 | 0°C | 0000 |
K2 | 32°F | 0032 |
T1 | 0°C | 0000 |
T2 | 0°F | 0000 |
E1 | 0°C | 0000 |
E2 | 32°F | 0032 |
R1 | 300°C | 0300 |
R2 | 32°F | 0032 |
S1 | 200°C | 0200 |
S2 | 32°F | 0032 |
L1 | 0°C | 0000 |
|
|
|
TABLE - B
MODEL | HIGH SIGNAL | DISPLAY |
|
|
|
|
|
|
M1 | 600°C | 600.0 |
M2 | 500°F | 0500 |
M3 | 200°F | 200.0 |
J1 | 600°C | 0600 |
J2 | 1000°F | 1000 |
K1 | 1200°C | 1200 |
K2 | 2000°F | 2000 |
T1 | 400°C | 0400 |
T2 | 400°F | 0400 |
E1 | 600°C | 0600 |
E2 | 1200°F | 1200 |
R1 | 1700°C | 1700 |
R2 | 3100°F | 3100 |
S1 | 1700°C | 1700 |
S2 | 3100°F | 3100 |
L1 | 600°C | 0600 |
|
|
|
Page : 10