Xylem WTW Multi 3320, Руководство по эксплуатации

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Multi 3320 Ion concentration
ba77053e04 07/2018
39
page 71).
Criteria The AutoRead criteria affect the reproducibility of the measured values. The
following criteria can be adjusted:
 high : highest reproducibility
 medium : medium reproducibility
 low : lowest reproducibility
Freezes the mea-
sured value (HOLD
function)
With the HOLD function, you can freeze the current measured value. The dis-
played measured value stops changing until you switch the HOLD function off.
7.1.2 Measuring the temperature
For reproducible ion-selective measurements, it is essential to measure the
temperature of the test sample.
You have the following options to measure the temperature:
 Measurement by an external temperature sensor.
 Manual determination and input of the temperature.
The measuring instrument recognizes whether a suitable sensor is connected
and automatically switches on the temperature measurement.
The display of the temperature indicates the active temperature measuring
mode:
If you wish to measure (or calibrate) without temperature sensor, proceed as
follows:
Increasing reproducibility also causes the response time to
increase until a measured value is evaluated as stable.
1. Freeze the measured value with <AR> .
The [HOLD] status indicator is displayed.
2. Release the frozen measured value again with <AR> .
The HOLD function is switched off.
The [HOLD] status display disappears.
Tempera-
ture sensor
Resolution of the
temp. display Temp. measurement
yes 0.1 °C Automatic with temperature sensor
- 1 °C Manual
1. Measure the current temperature of the test sample.