KH Director, black

KH Director, black Automated Alkalinity Monitoring and Control

The upkeep of Alkalinity is the most crucial aspect of reef keeping; stability is essential. If you are aiming to create optimal coral growing conditions, Alkalinity testing is a necessity! Keep it steady with the new KH Director. You can easily monitor, maintain, and control Alkalinity.

KH Director® – Features:

• Lab-grade KH measurement accuracy: Measure your Alkalinity with laboratory-grade accuracy. With just a 100 ml water sample, the KH Director® can provide measurement values with 0.1° dKH accuracy.
• User-adjustable test sample volume: In practice, achieving an accuracy of 0.1° dKH is not always required. The KH Director provides the option to reduce the test sample volume for each test, allowing for an accuracy of approximately 0.2° dKH with a smaller water sample.
• Measurements per day adjustable: If the KH value does not fluctuate significantly, you can reduce the number of daily measurements.
• Higher accuracy and safety provided by additional valves: Test your Alkalinity confidently and consistently. Built-in valves ensure the same measurement conditions and prevent the sample liquid from returning to the aquarium, even in the unlikely event of a fault.
• Cost-effective and safe reagent fluid: Each test requires only 1 – 3 ml per measurement.
• Automated Data-logging: Review past test results, catch sudden KH swings, and fine-tune your KH dosing with the help of automated data logging.
• Automated liquid supply: Enjoy automatic supply of KH-boosting liquids. Depending on the method, one or more additional dosing pumps may be required.
• Calcium reactor control: Alternatively, the KH value can also be influenced by controlling a calcium reactor.
• The on-board GHL LED logo: This feature provides color-coded status indicators, showing the condition of your system at a glance:
  • White = Configuration mode
  • Blue = Normal operation
  • Green = Amount of liquid in a fluid container is OK
  • Yellow = Warning threshold – fluid container(s) are running low
  • Red = Alarm threshold – fluid container(s) are empty
• myGHL cloud accessible: Access the KHD through the myGHL® cloud service – via GHL Doser 2 / 2.1 or ProfiLux 3 / 3.1 / 4.
• Seamless integration with GHL system: The KH Director® integrates effortlessly into the modular GHL aquarium system using the PAB (ProfiLux Aquatic Bus) connection, ensuring interference-free communication with other GHL PAB devices such as the GHL Doser 2.1 or the ProfiLux® 4.
• Low maintenance design: The KH Director® features a unique design that allows easy access and maintenance of the included pH electrode. Calibration and replacement are straightforward.
• KH value display: View your KH reading whenever and wherever you want via the ProfiLux display, ProfiLux Touch, or web browser (myGHL®). An additional external display unit is optional.
• Robust design built with laboratory quality: Every product we create is made to withstand the test of time. The KH Director® is no exception, crafted from durable materials to meet laboratory standards.

Technical Specifications:

• KH Director® is available in two color options: Black or white
• Dimensions (mm): 220 x 150 x 75 mm (without pH electrode)
• Dimensions (in): 8.66″ x 5.9″ x 2.95″ (without pH electrode)

KH Director® includes the following:

• Device with integrated measuring cell
• pH electrode, specifically designed for the KHD, including calibration liquids
• Testing reagent 500ml
• Silicone tube 5m
• Power-supply splitter cable

How does the KH Director® work?

The KH Director® is designed to operate in conjunction with a GHL Doser 2 (2.1) standalone or a ProfiLux® Aquarium Controller 3 or 4 with a Doser 2 Slave. The two inlets and one outlet of the KH Director connect to three dosing pumps on the Doser 2 (2.1). These pumps are responsible for accurately transferring fluid to and from the KH Director. A sample of the aquarium water is first sent to the KH Director®. Subsequently, the KH value is determined precisely through the slow addition of a further liquid (reagent) and measurement of the pH value. The sample water is then pumped out and collected in a separate container for later disposal.

What are the costs for reagent and pH electrode?

At GHL, we understand the importance of ongoing costs associated with automated KH monitoring and control. For the KH Director, it was particularly important to consider these costs and develop a highly efficient, cost-effective product. A single 1000ml bottle of reagent can last for up to three months when testing is performed four times per day at a KH value of 8. The pH electrode used by the KH Director was specially designed for KH measurement and has an average lifespan of one to two years.