Hach QbD1200 User Manual (English)

Questions and Answers:

V
Victoria ReillySep 6, 2025
What to do if the Hach QbD1200 Measuring Instruments auto sampler does not operate?
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  Jacob MackSep 6, 2025
  If the auto sampler for your Hach Measuring Instruments isn't working, first ensure the USB cable is securely connected and the power is on. If that doesn't resolve the issue, it could be due to electrical transients. Try installing a commercially available USB opto-isolator between the analyzer and the auto sampler. To reset USB communications, power cycle both instruments by turning them off and then on again.
J
John HernandezAug 23, 2025
Why the auto sampler does not operate on Hach Measuring Instruments?
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  dmacdonaldAug 25, 2025
  If the auto sampler on your Hach Measuring Instruments isn't operating, check that the USB cable from the auto sampler is correctly connected to the instrument and that the power is on. Large electrical transients on the power line may disrupt the USB communication. To resolve this, install a commercially available USB opto-isolator between the analyzer and the auto sampler. Then, power cycle both instruments by setting the power to off and then on again.
M
michaelortizAug 25, 2025
How to fix network connection on Hach Measuring Instruments?
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  Ana PopeAug 26, 2025
  If the network connection isn't showing on your Hach Measuring Instruments, the ethernet cable may not be connected. Ensure the ethernet cable is properly connected to the instrument.
R
Regina ShawAug 27, 2025
What to do if Hach Measuring Instruments shows "Invalid Password" message?
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  Mr. David TaylorAug 27, 2025
  If you're seeing an "Invalid Password" message on your Hach Measuring Instruments, it means the password entered is incorrect. Try entering the correct password, or select a different user name.
E
Eric DunlapAug 27, 2025
Why does Hach Measuring Instruments show "Access Denied" message?
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  Kim TaylorAug 27, 2025
  If you receive an "Access Denied" message on the Hach Measuring Instruments, it indicates that the user account you're using does not have the necessary permissions. To resolve this, give the required accessibility permissions to the user, or log in as a different user who has sufficient permissions.
A
Austin WilkinsonAug 28, 2025
What to do if Hach Measuring Instruments does not accept new password?
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  Ronald HowardAug 28, 2025
  If the new password is not accepted on your Hach Measuring Instruments, it means the password and the confirmation password do not match. Ensure that you enter the same password in both fields.
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nkimSep 12, 2025
Why the network connection does not show on Hach QbD1200 Measuring Instruments?
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  ythomasSep 13, 2025
  If the network connection isn't showing on your Hach Measuring Instruments, ensure that the Ethernet cable is securely connected to the instrument.
D
Denise FritzSep 14, 2025
What to do if the measurement does not start on Hach QbD1200 Measuring Instruments?
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  Jasmine SmithSep 14, 2025
  If the measurement on your Hach Measuring Instruments does not start, it could be due to an error during the measurement setup. Try turning the instrument off and then on again.
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amandajohnsonSep 5, 2025
Why user interface error messages appear during menu changes on Hach Measuring Instruments?
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  Robert FlowersSep 5, 2025
  If user interface error messages are appearing during menu changes on your Hach Measuring Instruments, it indicates an error in the user interface firmware. Turn the instrument power off, and then on again.
K
Kimberly RobinsonSep 2, 2025
What to do if the system test fails on Hach Measuring Instruments?
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  Kelly VangSep 3, 2025
  If the system test fails on the Hach Measuring Instruments, it could be due to an error during the system test or because the UV reactor is almost expired. Ensure that the carrier gas supply is correctly connected. Also, replace the UV reactor and make sure there is a sufficient quantity of carrier gas.

Hach QbD1200 Specifications

General

Detector	Silicon Photodiode
Operating Temperature	0 to 50 °C (32 to 122 °F)
Storage Temperature	-20 to 60 °C (-4 to 140 °F)
IP Rating	IP67
Measurement Principle	Nephelometry
Light Source	LED
Display	LCD
Power Supply	4 AA batteries or USB power adapter
Method	Nephelometric determination of turbidity by measuring the amount of light scattered at a 90° angle to the incident beam. A silicon photodiode detects the light.