EUTECH INSTRUMENTS WP PCD 650 Manuál s instrukcemi stáhnout pdf (Strana 28)

Instruction Manual PCD 650

2.2.16 Linear temperature Coefficient

The temperature coefficient is a value that reflects the degree to which the

conductivity is affected by temperature changes. If you do not know the

temperature coefficient of your solution you can determine the correct value

using the formula on page 106 “Calculating Temperature Coefficients”.

NOTE: Your meter is factory set to a temperature coefficient of 2.1% per °C.

2.2.17 Pure Water Coefficient

Pure water coefficient will be calculated and applied automatically for ultra

pure water measurement if ‘ENABLE’ at appropriate set up pages.

For more information regarding pure water coefficient, please refer page 86.

2.2.18 Set Salinity

This option allows you to set the salinity (in ppt) for your solution, as the

dissolved salts alter the relationship between the partial pressure of oxygen

and the oxygen concentration in water. By setting the salinity, the meter will

compensate for the impact of salinity on the partial pressure/oxygen

concentration relationship of your sample. The salinity can be set from 0 to

50 ppt.

2.2.19 Auto Salinity Compensation

If auto salinity comp. is enabled, the meter will automatically compensate for

salinity for determining dissolved oxygen concentration of the sample. Auto

salinity compensation will be applicable only in multi measurement mode and

only if one of the measurement selected is conductivity related. This option

is activated only in CD650 & PCD650. Otherwise, manually set salinity

value will be applied.

2.2.20 % Saturation Offset Adjustment

This option lets you offset meter’s value when cross referenced with another

DO meter. The PCD 650 meter allows to adjust % saturation offset calibration

within +/- 10.0% offset.

Note: When a user calibration is done, the offset will be reset to zero.

2.2.21 Set barometer pressure range and barometric pressure units

The PCD 650 meter is capable of measuring barometric pressure with its

built-in pressure sensor. In the event, the pressure reading is inaccurate, you

can calibrate the value from the setup menu. For setting barometric pressure

range, please refer page 94.

2.2.22 Pressure compensation

If pressure comp. is set to ‘ENABLE’, the meter will compensate for the

barometric pressure at the location depending on the altitude.

For example, if the barometric pressure is 700 mmHg the full scale calibration

would be done at 92.1%. This is relative to the pressure at sea level.

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EUTECH INSTRUMENTS WP PCD 650 Manuál s instrukcemi Strana 28