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2 two-point calibration, Two-point calibration, Pt 2-pt – Thermo Fisher Scientific Alpha DO 2000 User Manual

Page 24

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Instruction manual

Alpha DO 2000

Î NOTES:

• If you entered the Calibration mode from the Setup mode, the transmitter will

return to the setup menu.

• If there is a calibration error the transmitter displays “ERR”. In this case, press

the

and keys simultaneously (escape) to restart the calibration

beginning from step 1.

• When calibrating with manual temperature compensation, the transmitter

automatically changes from the preset process temperature to the calibration
temperature. After leaving the Calibration mode, the transmitter switches back
to the process temperature (for setting the calibration temperature and the
process temperature, see section

6.3).

5.2.2 Two-Point Calibration

SETUP

CAL

HOLD

0.0

Yes

7

ENT

SETUP

CAL

HOLD

NO

7

SETUP

SETUP

SETUP

SETUP

HOLD

HOLD

HOLD

CAL

HOLD

1-PT

2-PT

CAL

CAL

Rh

%

100

DO

CAL

ENT

ENT

ENT

1

2

2

3

CAL

HOLD

BAR

PRES

PRES

PRES

HOLD

H9

HOLD

PSI

4

4

4

CAL

CAL

CAL

SETUP

CAL

HOLD

BAR

1.013

5

ENT

ENT

SETUP

CAL

HOLD

0.0

6

ENT

READY

SETUP

CAL

HOLD

SAT

100.0

10

ENT

SETUP

CAL

25.0

100.0

11

MEAS

%

0.0

SETUP

CAL

HOLD

PNT

2nd

8

ENT

SETUP

CAL

HOLD

95.5

9

ENT

READY

%

1. Enter Calibration mode as described in section 5.1. The display shows “CAL

DO”. Press ENT key to start calibration.

2. The display shows “1-PT CAL” by default. Use

▲ or ▼ keys to select “2-PT

CAL” (2-point calibration). Press ENT key to confirm the 2-point selection.

3. Press

or key to set the relative humidity. Press ENT key to confirm.

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