TPS smartCHEM-D, Manual, Page: 27 / 60

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6. Temperature Mode
The temperature readout must be calibrated before attempting ppM Dissolved Oxygen calibration.
The decimal point is replaced by a “
∗∗
” if the reading is not calibrated.
The smart CHEM -D is able to take Temperature readings from the Temperature sensor, ED1
Dissolved Oxygen sensor or YSI Dissolved Oxygen sensor. If both the Temperature sensor and a
Dissolved Oxygen sensor are connected at the same time, the Temperature reading is taken from the
Temperature sensor.
If the smart CHEM -D ’s Temperature readout was calibrated on an ED1 sensor and then a YSI
sensor is connected, the unit displays “
Probe
” instead of the Temperature data. The same occurs
when an ED1 sensor is connected after the unit was calibrated on a YSI sensor. This warning is
only displayed when the separate Temperature sensor is not connected. The Temperature readout
must be re-calibrated if Temperature measurements from the new Dissolved Oxygen are required.
6.1 Temperature Calibration
1. To calibrate the separate Temperature sensor, plug the temperature sensor into the
Temperature
socket.
To calibrate the Temperature readout from a Dissolved Oxygen sensor, plug the Dissolved
Oxygen sensor into the
Oxygen socket and ensure that the separate Temperature is not
connected.
2. Switch the meter on.
3. Place the Temperature or Dissolved Oxygen sensor into a beaker of room temperature water,
alongside a good quality mercury thermometer. Stir the probe and the thermometer gently to
ensure an even temperature throughout the beaker.
4. Select Temperature Calibration (
→ →
F1:Calibrate
→ →
F5:Temperature
).
The Temperature Calibration screen is now displayed. The bottom line provides confirmation
of which sensor is being calibrated. The following example shows the Temperature sensor
being calibrated.
Enter Actual
Temperature:_
24*0
O
C
Using Temp. Probe.
The current reading from the Temperature or Dissolved Oxygen sensor is displayed.
5. Type in the temperature as measured by the mercury thermometer using the Numeric Keypad
and press . The Automatic Stability Function will now show a and highlight the
Temperature reading while it is unstable…
Enter Actual
Temperature: 25.0
24*0
O
C
Waiting to Stabilise
When the Temperature reading has stabilised, the unit will calibrate itself.
To calibrate immediately without waiting for complete stability, press to disable the
Automatic Stability Function.
6. The smart CHEM -D is now calibrated for Temperature and is ready for use in this mode.