JBL ProFlora pH Sensor+Cal
pH electrode with BNC connection

  • Robust quality electrode for JBL pH-Control and other pH measuring and control devices with a BNC connection, incl. liquids for the calibration and storage of pH sensors
  • Easy to connect: connect the electrode with BNC connection to the respective measuring or control device (not included)
  • Large protective cap filled with storage solution, plastic shaft and gel filling, suitable for many systems: BNC plug
  • Individually tested and documented, service life approx. 2 years
  • Package content: pH electrode with BNC connection, pH-Sensor+Cal, incl. calibration solution
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Recommended retail price incl. VAT
Available from your specialist dealer.
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Product information

Healthy fish thanks to ideal pH value
The acidity determines the pH value of the water. To preserve the health of the fish and plants it needs to be constantly monitored and adapted to the conditions. The right pH value depends on the fish stock of the aquarium. An incorrect pH value can cause stress and diseases.

Easy to connect
Connect the pH electrode with the BNC connection to the respective measuring and control device.
RELIABLE Each electrode has been individually tested and documented and needs to be replaced after about 2 years. It comes with a large protective cap, filled with storage solution.

Details

JBL ProFlora pH Sensor+Cal

Art. no.:
6318800
EAN Code:
4014162631886
Content:
1 kit
Volume packaging:
3.570 l
Gross weight:
574.000 g
Net weight:
360 g
Weight factor:
1000
Size(l/h/w):
100/210/170 mm

Technical Data

FAQ
What pH Control interface is suitable for the pH sensor?

A BNC connector is needed.

How does the JBL pH-Control recognise a “bad“ sensor?

The pH sensor transmits a voltage to the measuring device, which convert the voltage into the pH value.
This voltage does NOT remain constant throughout the service life of the sensor! It needs to be calibrated regularly. The device is thus informed about the age-related change in voltage and can display reliable values again.
The calibration takes place at pH 7 and pH 4.
At pH 7 a new sensor transmits a voltage of 0 mV (+/- a few mV) to the measuring device. The more the voltage at pH 7 deviates from 0, the older the sensor is. The deviation can occur at + or -. At a deviation of more than +40 or -40 mV the device rejects the sensor.
The error message OFFSET appears.
NOTE: The same error message appears if you accidentally begin to calibrate at 4!!
At pH 4 the sensor transmits a voltage of about +186 mV (when 7 is at 0 mV). This means that between the single steps (4-5; 5-6 and 6-7) there is in each case a difference of about 62 mV. The smaller this difference, the older the sensor. With differences below 30 mV the device rejects the sensor.
The error message DELTAV appears.
NOTE: The same error message also appears, when you accidentally calibrate twice at 7!!

IMPORTANT: Rejected sensors can often be brought “back into operation” if you soak them intensively in storage solutions (for several days)!

What deviations during the calibration are usual and how are they connected to the temperature?

It is difficult to give a precise answer without information about the sensor, particularly the age of the sensor. Good sensors have deviations in the range from 0.02 to 0.05 pH levels when calibrating.

The input voltage differs for each sensor, as each sensor has its own individual properties. For the majority of our sensors, it is between -30 and +30 mV at pH 7.

Both input voltages (pH 7 and pH 4) are important when assessing the quality of a sensor. The greater the difference between these two values, the better the sensor and the precision of the measurement and control. The differences should be over 140-150 mV.

The temperature sensor should always be used during calibration. The pH level varies according to temperature, so that it is always best to measure the pH level with temperature compensation. The deviation is between 20 and 30 °C, 0.17 pH levels, and the relationship is nonlinear.

What does DELTAV mean in the display?

This message indicates that the potential difference per full pH unit is smaller than 30 mV. The pH sensor is either too old, defective or was accidentally calibrated twice with the same buffer solution.

Remedy: Repeat the calibration and take care to use the buffer solution correctly. If this does not work, connect a new sensor and calibrate again.

Do you need to unscrew the screw connection of the temperature sensor, before you can use it?

No, the pH sensor is meant. It is located in a protective cap which is filled with a storage solution. Before the calibration the pH sensor needs to be taken out of this protective cap by loosening the screw connection and to be immersed, without the cap (and storage solution), into the aquarium water.

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Download

Instructions

  • JBL ProFlora pH-Sensor Cal
    Size:
    350 kByte
    Download

safety instructions

  • safety instruction for water conditioners
    Filename:
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    Size:
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    Download
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