Omega Vehicle Security LDP1XX-21 manual Adjustment And Calibration Procedure, Rtd Models

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 TABLE-A.

6.- Display must shows the DISPLAY value indicated in TABLE-A, if not turn the trimmer PT1 located on the Signal Conditioner (See paragraph 10.1) until display shows the DISPLAY value.

7.- Adjust the RTD simulator to generate the high signal, see TABLE-B.

8.- Display must shows the DISPLAY value indicated in TABLE-B, if not turn the trimmer PT2 located on the Signal Conditioner (See paragraph 10.1) until display shows the DISPLAY value.

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 TABLE-A.

6.- Display must shows the DISPLAY value indicated in TABLE-A, if not turn the trimmer PT1located on the Signal Conditioner (See paragraph 10.2) until display shows te correct value.

7.- Adjust the Thermocouple simulator to generate the high signal indicated in TABLE-B.

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

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