Water Harvesting Level Sensor
 

Hi all

A colleague of mine is trying to troubleshoot a problem with a water
reclamation system at his GF's.

He is thinking that the level sensor might be shot in the water tank and
therefore the control board never gets a full signal or runs the
delivery pump.

The cable connecting the control board to the sensor is a four core with
colours red, blue, green and yellow.

Has anyone any experience of these systems to know what job each core is
doing?
He is thinking that one pair is power and the other a 4-20mA signal.
Does that sound likely?
If so, would it be red/blue for power and green/yellow for signal?

We have appropriated a fluke tester to try to diagnose the problem which
can simulate the 4-20 from the sensor.

Any pointers gratefully received.

Thanks

Phil

Water Harvesting Level Sensor
 

On 22/10/2019 18:03, thescullster wrote:
Hi all

A colleague of mine is trying to troubleshoot a problem with a water
reclamation system at his GF's.

He is thinking that the level sensor might be shot in the water tank and
therefore the control board never gets a full signal or runs the
delivery pump.

The cable connecting the control board to the sensor is a four core with
colours red, blue, green and yellow.

Has anyone any experience of these systems to know what job each core is
doing?
He is thinking that one pair is power and the other a 4-20mA signal.
Does that sound likely?
If so, would it be red/blue for power and green/yellow for signal?

We have appropriated a fluke tester to try to diagnose the problem which
can simulate the 4-20 from the sensor.

Any pointers gratefully received.

Thanks

Phil

Any information about the manufacturers might help (unless it is a
complete home brew).

Water Harvesting Level Sensor
 

On 22/10/2019 18:03, thescullster wrote:
Hi all

A colleague of mine is trying to troubleshoot a problem with a water
reclamation system at his GF's.

He is thinking that the level sensor might be shot in the water tank and
therefore the control board never gets a full signal or runs the
delivery pump.

The cable connecting the control board to the sensor is a four core with
colours red, blue, green and yellow.

Has anyone any experience of these systems to know what job each core is
doing?
He is thinking that one pair is power and the other a 4-20mA signal.
Does that sound likely?

Quite possible. But also possible that one pair is 4-20mA and the other
is an alarm contact - most, but not all, field instruments run off the
4-20mA signal that they are controlling, with no separate power supply.

If so, would it be red/blue for power and green/yellow for signal?

They seem likely colours, but who knows what the installer might have done.

We have appropriated a fluke tester to try to diagnose the problem which
can simulate the 4-20 from the sensor.

That makes life a lot easier.

Any pointers gratefully received.

Information on the make and model would be good.

SteveW

Water Harvesting Level Sensor
 

On 22/10/2019 21:21, Steve Walker wrote:
On 22/10/2019 18:03, thescullster wrote:
Hi all

A colleague of mine is trying to troubleshoot a problem with a water
reclamation system at his GF's.

He is thinking that the level sensor might be shot in the water tank
and therefore the control board never gets a full signal or runs the
delivery pump.

The cable connecting the control board to the sensor is a four core
with colours red, blue, green and yellow.

Has anyone any experience of these systems to know what job each core
is doing?
He is thinking that one pair is power and the other a 4-20mA signal.
Does that sound likely?

Quite possible. But also possible that one pair is 4-20mA and the other
is an alarm contact - most, but not all, field instruments run off the
4-20mA signal that they are controlling, with no separate power supply.

If so, would it be red/blue for power and green/yellow for signal?

They seem likely colours, but who knows what the installer might have done.

We have appropriated a fluke tester to try to diagnose the problem
which can simulate the 4-20 from the sensor.

That makes life a lot easier.

Any pointers gratefully received.

Information on the make and model would be good.

SteveW


Hi Steve/Newshound

My colleague is back in the office, so I can provide a little more detail.

The installer company was "Kingspan" although this is probably
irrelevant as, according to the GF they did not appear to have much of a
clue.
The hardware carries the name of Envireau and the system was sold as a
rain water recovery solution.

Apparently there are four wires as described previously between the
sensor in the tank and the control panel and there are four similar
wires from the panel to an analogue needle-type display showing the tank
fill condition between empty and full.

Before the system "broke", the level gauge simply fanned backwards and
forwards, so clearly the installation was never completed correctly - it
appears to go back to 2007.
My colleague has replaced the pump, believing that to be the failed
component, but the system still will not run (even in its previous
lack-lustre manner).


Any further thoughts appreciated.


Phil

Water Harvesting Level Sensor
 

On 24/10/2019 07:56, thescullster wrote:
Envireau and the system was sold as a rain water recovery solution.

Possibly a more modern installation

https://www.direct-drainage.co.uk/wp... ng_System.pdf

but mentioned:

Differential sensor has a 4 core cable:-
red (5V) €“connected to pin 1-
green (GND) €“connected to pin 2-
yellow (+Out) €“connected to pin 3-
blue (-Out) €“connected to pin4.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Water Harvesting Level Sensor
 

On 24/10/2019 16:48, alan_m wrote:
On 24/10/2019 07:56, thescullster wrote:
Envireau and the system was sold as a rain water recovery solution.

Possibly a more modern installation

https://www.direct-drainage.co.uk/wp... ng_System.pdf


but mentioned:

Differential sensor has a 4 core cable:-
red (5V) €“connected to pin 1-
green (GND) €“connected to pin 2-
yellow (+Out) €“connected to pin 3-
blue (-Out) €“connected to pin4.

Thanks Alan have forwarded to my colleague for investigation

Phil