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3 measuring the orp voltage, 4 settings for ph and orp measurements, Measuring the orp voltage – YSI pHotoFlex pH Handheld Colorimeter User Manual

Page 51: Settings for ph and orp measurements

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pHotoFlex

®

pH

Operation

51

ba76123e01

02/2013

4.6.3

Measuring the ORP voltage

ORP electrodes are not calibrated. However, you can check ORP elec-
trodes using a test solution.

AutoRead

(drift control)

The AutoRead function (drift control) continually checks the stability of
the measurement signal. The stability has a considerable impact on the
reproducibility of measured values. The display of the measured pa-
rameter flashes until a stable measured value is available.

Criteria

With identical measurement conditions, the following applies:

4.6.4

Settings for pH and ORP measurements

Overview

For pH and ORP measurements, the following settings are available in
the Configuration / pH & ORP menu:

Measured parameter
Calibration record (display)
 Selecting the calibration type
 Entering the Calibration interval
 Selecting the Unit for slope
 Selecting the Temperature unit
Reset

1

Perform the preparatory activities according to section 4.6.1.

2

Submerse the ORP electrode in the sample.

3

Press the key (short pressure) repeatedly until the mea-
sured parameter, ORP is selected.

pH & ORP \ ORP

157

mV

25.0

°C

[AR]

01.02.05 15:12

Measured
parameter

Reproducibility

Response time

ORP voltage

better than 1 mV

> 30 seconds