Calibration; Ph Electrode - JUMO AQUIS 500 pH Operating Instructions Manual

8 Calibration

8.1

pH electrode

General Various calibration options are available to adapt the instrument to the pH
electrode.
- 1-point calibration
This is only recommended for special applications, e.g. high-purity water.
- 2-point calibration
This is recommended as the standard method.
- 3-point calibration
This is only recommended for special applications with increased accuracy
requirements, both within the acidic and alkaline ranges.
When to The pH combination electrode (or glass and reference electrode) should be
calibrate cleaned at regular intervals (depending on the sample medium) and the
transmitter calibrated.
Calibration Calibrating can be started as follows:
start
- by pressing the
if this has been enabled in ADMIN. LEVEL / PASSWORD / CALIB. ENABLE.
- via ADMIN. LEVEL / PASSWORD / CALIB. LEVEL.
- via CALIB. LEVEL
if this has been enabled in ADMIN. LEVEL / PASSWORD / CALIB. ENABLE.
8.1.1 1-point calibration
Requirements - The supply voltage for the instrument must be present.
see Chapter 4 "Electrical connection", page 12ff.
- A combination electrode must be connected to the transmitter.
- "PH STANDARD" must be configured as the sensor in the basic settings.
- Calibration must be enabled,
see Chapter 6.9.1 "Administrator levels", page 39.
- The transmitter is in the measurement mode.
68
All manuals and user guides at all-guides.com
key,
CAL
The display blinks during calibration.
The analog outputs will respond as configured in OPERATOR
LEVEL / ANALOG OUTPUT x / DURING CALIBRATION.
The relays will respond in accordance with the configuration of the
switching outputs.