Jenway 3540 - Manual (Page 14)

Section 2.24 Installation Verification
1.
Connect the power supply, conductivity cell and ATC probe to the rear panel, as
described in the previous section. (Do not immerse the probes in solution at this
stage).
2.
Connect the BNC shorting plug (009 146) to the pH input in place of the pH electrode.
3.
Switch on the power at the mains supply socket, if necessary, then press the power
on/off key on the instrument.
4.
The 3540 start up screen is shown for a few seconds…
Start Up screen shown during internal self checking
…followed by the main measurement
screen with either the pH or conductivity tab
highlighted (depending on which was active when power was switched off).
Main measurement screen with pH tab highlighted
5.
The pH reading should be close to 7.00(0). The actual value will depend on the last
calibration and the resolution that was selected in the pH set up menu.
6.
The conductivity reading should be a low µS value. This will also depend on the last
calibration.
7.
With the ATC and conductivity probes in the same environment, the temperature
readings should equilibrate to within ±0.5°C of the ambient temperature.
8.
Remove the BNC shorting plug from the pH input and reconnect the pH electrode.
Remove the wetting cap or soaking bottle from the sensing end of the pH electrode.
9.
Soak the pH electrode in 4 pH buffer solution and the conductivity probe in deionised
water for at least 30 minutes before carrying out calibration and sample
measurement.
10.
This procedure should be followed if the instrument is re-installed at a new location,
or when put back into use after a period of storage. For routine power-on and
operation see Section 4.