Hanna Instruments GROLINE HI981421, Instruction Manual

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5.3. INLINE MOUNTING RECOMMENDATIONS
Verify the maximum pressure of your circuit before mounting the probe. Ensure that the pressure does
not exceed 8 bars. Prepare the circuit with 3/4 NPT threaded T‑junction so that the probe can be
mounted. Recommended pipe size is 2”.
Perform a test measurement before inline mounting the probe to verify its functionality. If necesary,
also perform probe calibration (see section 6, OPERATIONAL GUIDE ).
After ensuring that the probe measures correctly, power off the Monitor and disconnect the probe.
Ensure the gasket for sealing the circuit has already been mounted on the probe's body. Mount the
probe by tightening in place to ensure a good connection. Recommended tilt angle is between 30 and
45 degrees from vertical position for better liquid flow around the probe pH sensor and to prevent the
electrodes being in an air pocket. Connect the probe to the Monitor .
After the probe has been assembled, fill the circuit with liquid fertilizer (or water) and check if
there are any leaks. To ensure correct measurement it is recommended that the tip of the probe is
submersed approximately 38mm inside the pipe. Both EC and pH sensors must be fully immersed
in liquid.
For better measurements it is recommended to mount the probe in circuit before recirculation pump.
Mounting and dismounting the probe must be done with the probe disconnected from
the
Monitor .