Omega Engineering CCT-55 manual Signal Input Range Selection, Adjustment and Calibration Procedure

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SIGNAL INPUT RANGE SELECTION

Set the jumpers to the position indicated in Table 5 for each range. The jumpers are located on the "MP" input board. See Fig. 8.

If the signal input range is modified, follow the adjustment and calibration procedure.

RANGE SELECTION

D C B

JUMPERS

Aon components side. Snap-on type

INPUT

CLOSE

RANGE

JUMPER

 

 

0 to 100 mV

A

0 to 1 V

------

0 to 10 V

------

0 to 100 V

D

0 to 650 V

B

FIG.8

TABLE 5

"MP" Input board

C o m p o n e n t s side

ADJUSTMENT AND CALIBRATION PROCEDURE

1.When input and output signal values are determined, remove the conditioner case. (Fig. 1).

2.Check on the "MA" module, if the selected power supply is correct. (Table 1).

3.Select on the input board the desired Voltage range, according to Table 5.

Caution : Do not confuse the jumpers on the "MP" board with the jumpers on the "ME" module, (all of the jumpers on the "ME" board must be opened).

 

Close on "MS-55" output module, jumper E & solder pad 1, and open the jumpers A, B, C &

D

and solder pads 2 & 5, according to Tables 2 and 3.

4.

Connect the calibrator to the conditioner terminals

: 4 and 6 for signal > 1 V.

 

: 5

and 6 for signal < 1 V.

5.Connect a digital voltmeter to the jumper "J4" located on the "MS-55 output module.

6.Power up the signal conditioner with the appropriate power supply.

7.Adjust the calibrator until it generates the low signal level.

8.Check the voltmeter reading is 0. If not, turn the trimmer P1, located on the "ME" input module, until the reading of the voltmeter is 0.

9.Adjust the calibrator until it generates the high signal level.

10.Check the voltmeter reading is 10.0 V. If not, turn the trimmer P2, located on the "ME" input module, until the reading of the voltmeter is 10.0 V.

11.Repeat steps 7 thru 10, until the two values are correct.

12.Connect a digital frequency meter, to the signal output terminals 11 and 12. The reading must be between 2500/5000 Hz.

13.Select on the "MS-55" output module, the corresponding jumpers, according to Tables 2 & 3.

14.Adjust the calibrator until it generates the high signal level and turn the SPAN trimmer (P3), located on the "MS-55" output module, until the frequency meter shows the desired output frequency.

15.Disconnect the conditioner and the instruments used and reinsert into the case.

10

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Contents User’sGuide Omega.comTM Table of Contents Internal Overview Open the HousingProcedure Procedure for DisassemblyChanging the Power Supply Power Supply module MATypes of Pulses OverviewPulses PER Second Frequency Output Range SelectionPulses / Hour Close Jumpers Pulse Width Solder Pads Pulses PER HourAmplifier Gain Offset AdjustOutput CCT-55-V DC Voltage Integrator Electrical FeaturesGeneral Specifications InputRange Selection Signal Input Range SelectionAdjustment and Calibration Procedure Signal Input CCT-55-I DC Current Integrator Electrical FeaturesInput CCT-55-V Wiring ConnectionsTechnical Data Mechanical SpecificationsDimensions Page USAWARRANTY/DISCLAIMER Temperature