EUTECH INSTRUMENTS ALPHA PH1000 PHORP CONTROLLERTRANSMITTER Manual de instrucciones Pagina 15
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Instruction Manual alpha-pH 1000
15
6 CALIBRATION MODE
You can reach the Calibration mode directly from the Measurement mode by pressing the CAL key and
entering the Calibration security code. You can also reach the Calibration mode from the Advanced Setup
mode.
6.1 pH Calibration
This unit features 7 preset buffer values (1.01, 4.01, 6.86, 7.00, 9.00, 9.18 and 10.01) for
fast auto calibration. When you calibrate this instrument, you need a standard pH buffer
solution that matches one of these values.
1) Enter Calibration mode. While in the Measurement mode,
push the CAL key and scroll to Calibration code “11”. Push
the ENTER key again. The upper and lower display reads
“CAL pH”.
NOTE: If the display read “CAL OrP”, see section 7.6.2 for
procedures on how to switch from ORP to pH readings.
2) Press the ENTER key again to begin calibration. The “CAL”
indicator appears at the top of display and the buffer indicator
appears in the bottom left corner of the display. The upper
display shows your present uncalibrated reading. The lower
display indicates one of the two buffer values used for the first
point calibration. It would either be 7.00 or 6.86.
3) Press the ▲ or ▼ key to scroll the lower display to the buffer
value that matches your buffer solution.
4) Make sure the electrode is in the buffer solution. In ATC, you
must also immerse the temperature probe in the buffer
solution. Likewise for symmetrical mode, you must also
immerse the potential matching pin in the buffer.
5) Press the ENTER key to confirm the buffer value and start
the calibration of its first point. The electrode indicator and
CAL indicator both flash. The controller automatically adjusts
the reading to match the buffer value.
6) The lower display will now show its next lower ‘pH’ buffer. Use
▲ and ▼ keys to select its second buffer from one of the 5
preset values. Remove the electrode from the first buffer,
wash and then immerse into the second buffer, Once the
upper display stabilises press the ENTER key, the electrode
and CAL indicator will flash. The controller adjusts the reading
to the buffer.
7) After calibrating to a second buffer value, this controller will
automatically display slope in the upper display and zero point in the lower display. You can view the
values for zero point and slope without calibration --- see section 5.1.2 for instruction The zero point and
slope are re-determined after each calibration.
8) Press the ENTER key. If you entered the calibration mode using the CAL key, the controller will return to
the Measurement mode. If you entered the calibration mode from the Advanced Set-up mode, the
controller will return to the sub-function menu.
CAL
PH
SETUP
HOLD
HOLD
59.0 mV
7.00
pH
6.96
pH
7.00
pH
CAL
4.02
pH
4.00
pH
SETUP
HOLD
CAL
READY
HOLD
CAL
- Instruction Manual 1
- Preface 2
- TABLE OF CONTENTS 4
- 1 INTRODUCTION 5
- 2 ASSEMBLY AND INSTALLATION 6
- 3 ELECTRICAL CONNECTION 7
- Symmetrical high-impedance 8
- Asymmetrical connections 8
- 3.2 Back Panel 9
- 25.0 10
- Function Groups 11
- 4.3 Control Concept 12
- 5 MEASUREMENT 13
- 59.0 mV 15
- Atc 18
- 0 21
- PrP 23
- t.PL 23
- out 24
- 8 AUTO/MANUAL MODE 29
- 9 TECHNICAL SPECIFICATIONS 30
- 10 ACCESSORIES 32
- 11 GENERAL INFORMATION 33
- 12 APPENDICES 34
- 12.2 Appendix 2 35
- 4.0 4.5 9.5 10.0 36
- 12.4 Appendix 4 37
- Time [s] 38
- Manufactured by: 40
- Distributed by: 40
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