GF SIGNET 5900, Руководство пользователя

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5900 Salinity Monitor
6.3 WET CAL Procedure
Requirements
Electronic calibration is performed to exacting standards by +GF+ SIGNET. System calibration will reduce errors which may be caused
by sensor wire lengths longer than the standard 15 foot length. Wire lengths of 100 feet are acceptable; cable shield must be
maintained through cable splice. Calibration may be done by known solution value or by comparison to a refractometer.
Calibration with NIST Traceable Solutions:
When using calibration standards traceable to the National Institute of Standards and Technology (NIST), care must be taken to ensure
the sensor and test solution are at the solution temperature specified on the test solution label. Care must be taken to prevent
contamination of the calibration solution. It is recommended to thoroughly rinse the sensor in a small amount of test solution (then
discard) before placing in any test solution for calibration purposes. The 2-step WET CAL process first allows for verification or
calibration of temperature, followed by verification or calibration of salinity (PPT) using a known process solution.
WET CAL Procedure (Solution calibration iIllustrated below)
Note: Always match test solution manufacturer's temperature recommendation.
Temperature:
+025.0
°
C >
Temperature:
+025.0
°
C >
Display:To Change: To Accept:
Enter known solution salinity or
reference reading.
Optional: enter zero to reset factory calibration
(zero MUST be re-entered if currently displayed
to reset factory calibration).
Measured salinity shown
after temperature calibration.
Press to accept salinity
calibration; display returns to
CALIBRATE MENU in 3
seconds
Press to accept temperature
calibration.
ENTER
ENTER
quick press
To exit WET CAL at any time without
saving changes:
Temperature:
+25.7
°
C >
A) Solution cal. : place
sensor and thermometer into
standard solution then press
right arrow key.
A) Solution cal. : allow approx.
3 minutes for stabilization, then
enter solution temperature.
Salinity
20.0 PPT
Salinity
20.0 PPT
Salinity
20.0 PPT