1. EnviroSCAN Flat Cap Probe Assembly, Normalisation & Installation Version 1.3 (01/03/2012)

2. PROBE COMPONENTS

3. ASSEMBLY Flat Cap & Ferrite bead Internal Cable & Ferrite bead Herbie Clip TM Probe Rod Interface mount Interface Herbie Clip™ is a trademark of HCL fasteners limited which may be registered in one or more jurisdictions

4. Step 1: Attach interface to probe rod Fasten interface to interface mount on probe rod and secure with screws supplied Tighten probe mount screws in place

5. Top of probe (interface at the bottom) Step 2: Slide sensors onto probe rod

6. Address 1Address 9 Address 16 Step 3: Address Sensors Address 16

7. Step 4: Thread internal cable Thread the internal cable through the sensors from top to bottom along the back of the probe rod, so that the internal cable PCB is at the top of the probe

8. Step 5: Loop Cable Make a loop in the cable at the base of the probe, and squeeze it into position in the back of the probe rod. This loop allows extra cable so that the Flat Cap may be disconnected from the probe rod while it is in the field for servicing/maintenance

9. Step 6: Wire cable to interface Thread the ferrite bead onto internal cable Connect the wires into the green Phoenix connector Tighten the ferrite bead close to the connector. Plug the Phoenix connector into the probe interface

10. Spacers Spreader Ring The Flat Cap contains spacers to guide the Internal Cable PCB into the correct position. The Flat Cap also contains a plastic spreader ring. This is an important component in providing a rigid non- compressible unit for sealing with the Herbie TM Clip.

11. Step 7: Connect Flat Cap & internal cable This will only connect one way. The correct orientation is such that the internal cable is closest to the Flat Cap cable i.e. “cable-to- cable”. Ensure that the internal cable PCB connector engages all 16 pins of the Flat Cap.

12. Step 8: Connect Flat cap to probe rod Squeeze the Flat Cap clip inwards and slide into place on the probe rod An audible “click” occurs when the clip is fully engaged.

13. Assembled EnviroSCAN Flat Cap Probe

14. NORMALISATION For more information about normalisation please consult the normalisation training presentation

15. Step 1: Air Normalisation Seal the Flat Cap onto the top of the access tube and attach the Herbie™ Clip. Hold the access tube such that nothing approaches in close proximity of any of the sensors. Using the Probe Configuration Utility (or IrriMAX for an RT6 system), set the Air normalisation values.

16. Step 2: Water Normalisation Insert the sensors and perform Water Counts for all sensors except the top one at 10cm. The top sensor cannot be normalised in the Normalisation Container as there is some measure of air around it.

17. Remove the probe from the Normalisation Container and insert it into its access tube. Tighten the Flat Cap onto the top of the access tube with a Herbie™ Clip. Immerse the top sensor in a suitable depth of water and perform the Water Count The probe is now fully normalised and ready for use.

18. The water normalisation procedure can be simplified with complete probe immersion in a water container deep enough for all sensors to be immersed. This process is quicker than normalising each sensor individually.

19. INSTALLATION

20. The access tube has a 2.5mm groove to help retain the Flat Cap in position against variable internal pressures that can occur inside the access tube. This groove is essential to the installation of the EnviroSCAN Flat Cap

21. Step 1: Remove section of soil Hammer the large turf cutter in to its full depth where you want to install the probe Remove the undisturbed soil core and place safely to one side. This cut is made in the soil so there is extra room to install the flat cap. The tripod will sit inside this hole. This step can also be done with a shovel.

22. Step 2: Install Access tube Continue installation as normal for an EnviroSCAN Screw Cap probe Standard (Dry) Installation: Install the tube until the yellow nylon dolley groove is 2cm above the the tripod Slurry Installation: Install to depth so as top of tube is 12mm below the soil surface

23. Step 3: Insert probe Attach the silica gel bag in the gap between the bottom sensor and the interface. Extra silica gel bags can be attached to the probe wherever space allows Insert the completely assembled probe into the access tube Use firm downward pressure until the Flat Cap audibly “snaps” into place.

24. Step 4: Join Cable The cable joining method will depend on the type of Sentek system the Flat Cap probe is being used with: Solo – Scotchlok join to Head Unit Cable (keep total cable to < 5m) RT6 – Scotchlok join to 5-wire cable PLUS – Install Quick Connector (Part 61249) or Scotchlok join to PLUS cable MULTI – Install Quick connector or Scotchlok join to 5- wire cable SDI-12, RS485/232 Modbus & Voltage - Scotchlok join or direct connect to 3 rd party device Scotchlok™ is a trademark of 3M which may be registered in one or more jurisdictions

25. Use a 3M crimping tool or large pair of Linemen’s Pliers to crimp the connector until the button is flush with the connector body Trim 50mm cable sheath Insert 2 x similar coloured wires into connector Repeat for all wires Scotchlok joining

26. Scotchlok joining cont.. Loop the join and some extra cable inside a suitable housing (i.e. valve box) Hints for using Scotchloks: No stripping of the insulation on individual wires is necessary When joining two wires, to ensure even compression, place wires in two outer slots of the Scotchlok Use a large pair of pliers to help ensure the Scotchlok is easily pressed flat

27. Step 5: Tighten Cap Move the ferrite bead as close to the cable elbow as possible. Attach Herbie Clip™ and tighten with pliers.

28. Note: Before replacing soil around probe cap, test the probe to make sure it is logging and transferring data correctly

29. Step 6: Replace soil Cut out the centre of the undisturbed soil core using the small turf cutter and replace the soil around the probe

30. Step 7: Cover cable Either –Bury the cable OR –Place the cable in a conduit to protect it from the elements Remember to leave some extra cable looped near the probe so that the cap can be lifted for servicing

32. FLAT CAP TOOLS Small Turf Cutter Clamping Plate Groove Tool Cap removal pliers Large Turf Cutter

33. Groove tool Two functions: 1.Plane the top of an access tube if it has been cut in the field and not square 2.Make the groove in an access tube

34. If the access tube has been cut in the field it can be squared off by applying downward pressure and rotating the tool clockwise. You can also cut the tube down using this tool by continuing the rotations. Squaring off tube

35. Creating the Groove Lift the spring tensioned handle and move the tool to the next level (fully inserted to the base). Use both hands to push and rotate cutting tool for 2 complete revolutions to make the groove. (NOTE: if you keep on turning the tool the groove won’t get any deeper).

36. Servicing the Flat Cap Sentek recommends that the silica gel bags be replaced every 6 months and/or each time the cap is removed. The IrriMAX graphs should also be monitored for possible signs of moisture build up near the sensors To remove the probe: 1. Use the Small Turf Cutter to loosen the soil around the cap 2. Use a hand trowel to remove soil immediately around the probe.

37. 3. Knock the Larger Turf Cutter in about to about 3/4, so that the cable is not damaged. 4. Twist the cutter about 10-15 degrees and lift it and the soil out. 5. Remove the Herbie Clip from the Flat Cap.

38. 6. Place the Clamping Plate around the tube and underneath the cap. Tighten the thumb screw. This plate holds the tube in place in loose sand and also prevents soil from falling in the tube 7. Place the Cap Removal Pliers over the cap and between the pins on the clamping plate. 8. Push down on the pliers to remove the Flat Cap from the access tube

39.  Should the cap need to be removed and there is a sensor in the top position of the probe rod which is blocking the clips, the top 2 or 3 sensors can be unplugged and moved down to expose the clip release points  The internal caps which hold the probe rod in the tubes during shipping of probe plastic complete kits can be used to prevent soil falling in the tube during servicing Servicing Hints:

40. The End