What to do if the sample is overflowing from the colorimeter of my Hach Measuring Instruments?
If the sample is overflowing from the colorimeter of your Hach Measuring Instruments, it's likely that the drain line is clogged or there's an air lock in the drain line. You should clean the drain line and eliminate any air locks from the drain plumbing.
What does 'Marginal Offset' mean on my Hach Measuring Instruments?
If your Hach Measuring Instruments shows 'Marginal Offset', it indicates a high offset count was measured with the LED off, usually caused by light leaks. Verify the colorimeter end caps are firmly screwed in place and check for any light leaks.
What does 'Marginal Zero' mean on my Hach Measuring Instruments?
If your Hach Measuring Instruments displays 'Marginal Zero', it indicates that a calibration resulted in an offset correction factor greater than 0.2 and less than 0.5. To resolve this, set CAL Defaults, verify the zero value, and recalibrate the instrument.
What does 'Marginal Gain' mean on my Hach CL17?
If your Hach Measuring Instruments shows 'Marginal Gain', it means a calibration resulted in a gain correction factor greater than 1.1 or less than 0.9, indicating a mismatch between the calibration standard and the value being input. Set CAL Defaults, verify the standard value, and recalibrate the instrument.
What does 'Low Signal' mean on my Hach CL17?
If you're seeing a 'Low Signal' on your Hach Measuring Instruments, it indicates that the reference measurement is less than 2000 A/D counts. Try cleaning the sample cell or replacing it.
What does the 'POWER' warning mean on my Hach CL17 Measuring Instruments?
If you are getting a 'POWER' warning on your Hach Measuring Instruments, it means that the power failed. Inspect the wiring and circuit breakers that deliver power.
Why am I getting a low reading on my Hach CL17?
If you are getting a low reading on your Hach Measuring Instruments, it is likely caused by clogged tubing. Replace the tubing to resolve this issue.
Why is there excessive moisture condensing on the colorimeter of my Hach Measuring Instruments?
If you're seeing excessive moisture condensing on the colorimeter of your Hach Measuring Instruments, it's likely due to a large temperature difference between the sample and the analyzer environment. When possible, allow the sample temperature to warm up to room temperature before it enters the analyzer.
What to do if my Hach Measuring Instruments shows 'LED Failure'?
If your Hach Measuring Instruments displays an 'LED Failure', it means the colorimeter’s photo detector is reading an extremely low level of light for the reference reading. Press the EXIT key to restart the instrument. If the problem continues, clean the sample cell. If the issue is still not resolved, remove the plug from the colorimeter’s sample viewing port. If the light does not come on and the colorimeter has just been removed and re-inserted, the colorimeter connector is not making a proper connection. Remove the colorimeter and inspect the connector pins. If the pins are bent, straighten them and reinsert the colorimeter. If the problem still remains, replace the colorimeter.
How to troubleshoot a Hach Measuring Instruments when the display doesn't light up and the pump motor isn't operating?
If the display does not light up and the pump motor isn't working on your Hach Measuring Instruments, the issue could be due to a lack of operating power. Check the power switch position, fuses, and power cord connections.
Inspect analyzer, check kits, report damage.
Enclosure rating, temperature range, and resistance.
Wall mounting process and clearance for connections.
Tips for kit assembly and tubing preparation.
Adjusting valves and observing bypass flow.
Making power connections at the terminal strip and conduit requirements.
Connecting wires to the power terminal and wire color codes.
Setting the voltage selector switch for 115V or 230V operation.
Connecting alarm relays, limits, and power removal methods.
Making recorder output connections with shielded cable and wire preparation.
Explains keypad and display functions, listing keys and their descriptions.
Details reagent requirements and installation steps.
Overviews major menus and how to access them.
Guide to isolate instrument problems by symptom and cause.
General| Power Requirements | 100-240 V AC, 50/60 Hz |
|---|---|
| Outlet Pressure | Atmospheric |
| Measurement Method | Colorimetric DPD method |
| Sample Interval | 2.5 minutes |
| Operating Temperature | 5 - 40 °C (41 - 104 °F) |
| Parameter | Free or Total Chlorine |
| Operating Humidity | 5 - 95% non-condensing |
| Sample Temperature | 0 to 40°C (32 to 104°F) |
| Sample Flow Rate | 200 to 500 mL/min |
| Power Consumption | Approximately 50 W |
| Output | 4-20 mA, RS-232 |
| Relays | Two relays |
| Enclosure | NEMA 4X |
| Resolution | 0.01 mg/L |
| Accuracy | ±5% or ±0.03 mg/L (whichever is greater) |
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