Environmental loggers
Jamie Young
1. Why we need data
2. Hardware options
3. Transmission of measured data and possibilities of presentation\ monitoring.
4. Storvik and SSF partnership.
Oxygen vital for survival and production
All animals need oxygen to stay alive
If oxygen is a bottleneck, the animal priority change; 1 metabolism for survival and operation2 reproduction 3 growth
In water oxygen diffuse 1000 times slower compared to air, this means that oxygen has to be supplied by water movement or direct injection
Waters carrying capacity for oxygen is reduced and fish consumption is increased by temperature, high temperatures can cause low oxygen situation
Low oxygen affects fish by; - Increased mortality (reduced animal welfare, RSPCA guide is 6mg/L )- Reduced feed utilization (increased feed conversion factor)- Reduced growth speed and capacity
Documentation
Feed utilisation (FCR) and growth (SGR) in post-smolt Atlantic
salmon exposed to four levels of DO concentrations at low
temperature (8 – 9 °C). Test period: 24 April – 17 June 2002.
EWOS Innovation DirdalFeed utilisation
y = -0.0051x + 1.3881R2 = 0.7795
P < 0.01
0.80
0.850.90
0.951.00
1.051.10
1.151.20
50 60 70 80 90 100
DO saturation (%)
FC
R (
kg/k
g)
Growth rate
y = 0.0052x + 0.0573R2 = 0.8819
P < 0.01
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
50 60 70 80 90 100
DO saturation (%)
SGR
(%/d
ay)
Effect of oxygen saturation in fish farming
-20
0
20
40
60
80
100
120
0 10 20 30 40 50 60 70 80 90 100
Oxygen saturation %
Rel
ativ
e sp
eed
/mo
rtal
ity
0
1
2
3
4
5
6
FC
R
Growth speed
Mortality
FCR
The graph shows relationships between oxygen saturation and feed conversion rate (FCR), mortality and speed of growth for salmon. Source: Brett & Grove, 1980.
Relative (growth) speed/mortality: % FCR: kg feed fed/kg growth
Effect of oxygen saturation in fish farming
It has been documented that the single most important factor for increasedgrowth and productivity in aquaculture is to maintain sufficient oxygen
saturationlevel over time in the water where the species grow. At saturation level below85%, feed utilisation begins to fall and the fish is increasingly vulnerable tosickness and, in the end, mortality. Trials show that;
at 75% saturation reduced appetite starts to appear
at 60% saturation increased mortality is shown
at 40% saturation there is no appetite among fish
at 30% saturation there is massive mortality
Supplier Expertise
1990`s
Analog systems2001
Evolution of Fish Farm monitoring equipments
Digital systems
2007Evolution of D.O. Measurement
FDO
Modular System with 3 Basic elements
Terminals
Modules
Sensors
IQ Sensor Net
LEGO Bricks
PC Network
Adaptable to local conditions
IQ Sensor Net
Sensors:
O2 pH / ORP Conductivity Turbidity / Solids Ammonia / Nitrate Carbon (COD …)
FDO 700 IQWhat does “next generation”
mean?
A new standard for optical D.O. sensors - Highest accuracy from the first moment on.- High stability- Low maintenance
New technologies
- Intelligent membrane with IQMC-technology- Soft «Green Light Technology (GLT)»- (C2 ) -calibrated optics
FDO 700 IQ
Intelligent membrane with IQMC- technology
IQMC = IQ Membrane Calibration = Intelligent Membrane Technology
- Each membrane is individually calibrated
- Values are determined at a factory calibration (which defines the complete characteristics of the membrane)
- All data is stored in a memo chip which is permanently fixed to the membrane.
- Data is automatically transmitted when the membrane is fitted to the sensors.
- Highest accuracy through the whole lifetime (even after a replacement of the membrane)
No Influence of air bubbles
Influence of air bubbles?
What is an 45° Membrane? FDO 700 IQ
advantages FDO®700 IQ
Internal Reference (EPRS) Highly precise matching (C2)
Long term stable signal over 2 years
Individual calibration data stored on the cap (IQMC) factory calibration (always available) No conditioning of the Membrane
Free of calibration
No influence of air bubbles due to 45° degree membrane Correct values under different mounting positions
no special mounting equipment needed
IQ Sensor Net Summary
One system for all parameters Any sensor combination possible Up to 20 sensors may be connected Digital signal transmission Price per measuring point decreasing with increasing
number Integrated lightning protection
Other options
Many solution to monitor and control.New developments in the pipeline
– Cheaper, more sensors, built in loggers and power supply
Make it Fishfarmer proof and user friendly
How can measurement be transmitted and monitored?
1. Direct on transmitter, real time, on site.
2. Local transmission to PC, real time, on site. Software, two-way communication. Adjustment possible.(LAN or cable)
3. Local transmission with use of radio. Longer reach than LAN, used normally when out of range for mobile network.
4. Transmission through local network (LAN) to PC, possible further to web server. (broadband). One way, only for monitoring.
5. Transmission through mobile network, GPRS, to web server. (this is “mainstream” solution. Giving access from anywhere.)
Monitoring on web
www.intab.biz
Monitoring on web
Monitoring on web
Monitoring on PC- software
Until recently there was not much focus on environmental importance of oxygen level, algae and other factors that have influence on “performance" the fish in intensive and commercial sea farming.
Now focus is high. Today we have reliable equipment for the purpose available.
Most common is oxygen, temperature, salinity, tide, wind, and mooring strain.
Monitoring of enviromental situation.
What next?
SSF and Storvik Ltd work together. We build a unit that fits each sites requirements. We train all farm key personnel on the importance of the
data and HOW to use it. Creating Environmental monitor experts on all sites.
– Follow format of AF “super user” which has been a great success.
We match and exceed the demands of all audits and authorities, leading the way in what farmers can and should be doing.
Tell us your needs and we produce the best solution for you.
THANK YOU