SMC sierra monitor corporation

Sentry Instruction Manual - Version 6

5.3.1.1 GLOBAL CALIBRATION

Proceed with the following steps to perform Global Calibration.

 

Step

 

 

Activity

 

 

 

Display

 

 

 

 

 

 

 

 

 

 

 

1

 

 

Begin ZERO value read.

 

 

ENTER TO ZERO

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

 

 

Press ENTER to start the controller recording the

 

 

 

 

zero signal value for all modules of the selected

 

 

 

 

 

gas type.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

Complete ZERO value read.

 

APPLY ZERO GAS

 

 

 

 

 

 

ENTER WHEN DONE

 

 

 

 

 

 

 

 

 

 

 

The upper display will cycle through all the

 

 

 

 

applicable module numbers with "00" displayed as

 

 

 

 

the level.

 

 

 

 

 

 

 

 

 

 

 

 

∙ Example "1. 00", "2 00" etc.

 

 

 

 

 

 

 

 

 

 

 

 

∙ If any module has not

been

previously

 

 

 

 

calibrated the "00" will be replaced by a "--".

 

 

 

 

If any sensor is not known to be in clean air at

 

 

 

 

this time, go to each such sensor which is to be

 

 

 

 

calibrated and deliver clean air at 100 cc/min

 

 

 

 

for three minutes using the apparatus in

 

 

 

 

 

 

 

Section 5.3.2.

 

 

 

 

 

 

 

 

 

 

 

 

Wait until the display cycles through all module

 

 

 

 

numbers.

 

 

 

 

 

 

 

 

 

 

 

 

Press ENTER to complete the zero read and the

 

 

 

 

display will advance to the span prompt.

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

Begin SPAN value read

 

 

ENTER TO SPAN

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

 

 

 

Press ENTER to begin the span process. The top

 

 

 

 

display begins to cycle through all sensor module

 

 

 

 

numbers which are configured for the selected

 

 

 

 

calibration gas. Each module number will show a

 

 

 

 

"period" immediately after the number and a

 

 

 

 

numerical concentration display as in the

 

 

 

 

following example. [1. 00] [2. 00].

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

Apply SPAN gas.

 

APPLY 50% LEL

 

 

 

 

 

 

ENTER WHEN DONE

 

 

 

 

 

 

 

 

 

 

 

Apply calibration gas to each sensor which is to

 

 

 

 

be calibrated using the apparatus in Section 5.3.2.

 

 

 

 

Use magnetic or non magnetic calibration gas

 

 

 

 

delivery fitting.

 

 

 

 

 

 

 

 

 

 

 

 

During the time calibration gas is being delivered

 

 

 

 

the upper display on the controller will continue

 

 

 

 

to cycle through all applicable module numbers.

 

 

 

 

The module responding to gas will generally show

 

 

 

 

an increasing reading on each pass.

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

Complete SPAN gas

 

CALIB COMPLETE

 

 

 

 

 

 

PLEASE WAIT

3:00

 

 

Step

 

Activity

 

 

 

Display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

application - no errors

 

PLEASE WAIT

3:00

 

 

 

 

 

 

 

 

 

 

When all modules have received calibration gas

 

 

 

 

press ENTER to indicate completion of the span

 

 

 

 

process. If all modules have been successfully

 

 

 

 

calibrated the controller will begin the three

 

 

 

 

minute time delay before placing modules back on

 

 

 

 

line

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

Error Conditions - Low

 

LOW SENSITIVITY

 

 

 

 

Sensitivity

 

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

 

If any modules were missed, or if any sensors

 

 

 

 

failed to respond correctly to the calibration gas

 

 

 

 

the low sensitivity message will identify those

 

 

 

 

sensor module numbers. If calibration of the

 

 

 

 

module was attempted, note the number and plan

 

 

 

 

corrective action as described in Section

7.

 

 

 

 

 

 

 

 

 

 

 

 

7

 

Error conditions - Not

 

NOT CALIBRATED

 

 

 

 

Calibrated

 

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

 

Press ENTER again. If all modules have been

 

 

 

 

successfully calibrated the controller will begin

 

 

 

 

the three minute time delay before placing

 

 

 

 

modules back on line. If any modules were

 

 

 

 

displayed as LOW SENSITIVITY, they will be

 

 

 

 

displayed again as NOT CALIBRATED. Press

 

 

 

 

ENTER to acknowledge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

Return to Operate Mode

 

PRESS ENTER TO

 

 

 

 

 

 

 

OPERATE MODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When the time delay is complete the display will read PRESS ENTER TO OPERATE MODE Press ENTER and the procedure is complete. Repeat the process as necessary to recalibrate modules or to calibrate other gases.

Remove all calibration apparatus from sensors.

CALIBRATION

Page: 49

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Sentry Industries 5000 instruction manual Begin Zero value read

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