I traveled to New Zealand recently to give Applied Instruments a hand with a large trade show. Applied Instruments are the sole distributor in New Zealand for Multitrode. The expression of interest received for the MultiSmart this year was massive compared to that of last year.

We were able to take over 140 quality feedbacks over the 2 ½ days of the conference. Of those 75 were directly aimed at the MultiSmart and other MultiTrode products. Last year we received only 28 enquiries and I considered only 22 to be “quality” enquiries.

The full sized demonstration pump station cabinet drew the most interest followed by the MultiSmart controlled waste water neutralization system. In the neutralization system the MultiSmart controls the switching of the sump pumps according to level and performs several custom functionalities.

The MultiSmart also accepts the 4-20mA pH signals from 2 pH meters, controls Pre treatment and then post CO2 dosing. The unit’s 4-20mA output is used to control a modulating valve that controls the discharge rate of the CO2 injection. The MultiSmart records the treated volume of water via flow meter and controls a divert valve, should the water not be adequately treated.

Most people were interested in the easiness in reconfiguration of the MultiSmart unit on the fly without needing to pull the unit out of the panel. Read more…

General News

Drawings of new pits come through my desk nearly every month and most have the MultiTrode Level Sensing Probe already specified, but from time to time I see a ball float right at the top to indicate high level and an alarm. The following figures show the backup level sensing configuration with a ball float and how that configuration matches with the backup Fail Safe Probe sensor design.
 

Proposed Tank Level With Ball Float

Proposed Tank Level With Fail Safe

It seems no one ever thought of changing the ball float to a new and more advanced Fail Safe Probe and install the Fail Safe Relay as well. Ball floats have their place; but when mission critical high level flow’s need a mission critical alarm, a Fail Safe Probe is the best bet together with a Fail Safe Relay.

Those who are familiar with the probe would know that the 200mm single sensor probe has just one wire, but the Fail Safe has two. The Fail Safe Controller will “integrate the loop” to check for continuity of the circuit; and if there is a break in the cable it will close a relay that will warn that, the integrity of the probe to do its job has been limited or has failed. Handy if you have a sewerage pumping station near a creek or river where people swim a lot. Read more…

In the well, Industry Backup Level Sensor, Ball Float, Fail Safe Probe, Level Sensing, probe