Measuring The Temperature - Xylem WTW Multi 3320 Operating Manual

pH value
Freezes the mea-
sured value (HOLD
function)
24
within the monitored time interval.
Measured
parameter
pH value
Temperature
The minimum duration until a measured value is assessed as stable is the
monitored time interval. The actual duration is mostly longer.
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.
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.
5.1.2

Measuring the temperature

For reproducible pH measurements, it is essential to measure the temperature
of the test sample.
You have the following options to measure the temperature:
 Automatic measurement of the temperature with the temperature sensor
(NTC30 or Pt1000) integrated in the 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:
Tempera- Resolution of the
ture sensor temp. display
yes 0.1 °C
- 1 °C
If you wish to measure (or calibrate) without temperature sensor, proceed as
follows:
1. Measure the current temperature of the test sample.
2. In the <ENTER>/pH/Man. temperature menu, set the temperature value
with <>< >.
Time interval
15 seconds
15 seconds
Automatic with temperature sensor
Manual
Stability in the time interval
Δ : better than 0.01 pH
Δ : better than 0.5 °C
Temp. measurement
ba77053e04
Multi 3320
07/2018