Hach SP-510, Основное руководство пользователя

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Table 3 Keypad description (continued)
Key Function Description
4 HARD CAL Completes a hard calibration. Refer to Calibration on page 17. The status indicator light is
yellow.
5 ZERO CAL Completes a zero-point calibration. Refer to Calibration on page 17. The status indicator
light is yellow.
Startup
Start the instrument
Note: Install the pressure plate correctly to prevent sample flow directly into the reagents. Refer to Install the pump
valve pressure plate on page 11.
1. Open the supply valve to the instrument.
2. Let the pressure in the tubes stabilize.
Note: If leaks occur under pressure, examine all connections. Secure connections until all leaks have stopped.
3. Set the power to on.
4. Operate the instrument for approximately 2 hours with the sample and reagents.
Note: The sample cell will have bubbles on the surface until it is fully wetted. The bubbles can cause irregular
readings until the sample flow stabilizes.
Calibration
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Complete a 2-point calibration
Complete a calibration after reagent installation or when an optical system component is replaced.
The standardization procedure makes the sample first hard, then soft.
1. Remove the plug from the top port of the colorimeter. Refer to Figure 13 on page 16.
2. Push HARD CAL . The hard cal LED is on continuously.
3. When the hard cal LED flashes, add two drops of Magnesium Standard Solution into the
colorimeter.
4. When the LED stops flashing and is on continuously, wait for the cycle to complete.
At the end of the cycle, the LED sets to off to show a successful calibration.
5. HARD CAL failure: When the LED starts to flash, push HARD CAL to confirm a hard cal failure.
Do steps 2–4 again.
6. Push ZERO CAL . The zero cal LED is on continuously.
7. When the zero cal LED flashes, add two drops of EDTA Solution, 10 g/L, into the colorimeter.
8. When the LED stops flashing and is on continuously, wait for the cycle to complete.
At the end of the cycle, the LED is set to off to show a successful calibration.
9. ZERO CAL failure: When the LED starts to flash, push ZERO CAL to confirm a zero cal failure.
Do steps 1–7 again.
10. Replace the plug in the top port of the colorimeter.
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