SurePoint Sentinel NH3 Manual

396-4519Y1 Sentinel NH3 Blockage Monitor Revised 01/26/2022

Sentinel NH3 Blockage Monitor

for ISOBUS

Installation and Setup

396-4519Y1

MAW

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor ii Revised 01/26/2022

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor Revised 01/26/2022

Table Of Contents

Introduction

 Anhydrous Ammonia Safety and General Information...................................... 1-5

 Basic Steps to Install your Sentinel System...................................................... 6-7

Components

Wiring & Elec.

Components - Wiring & Electrical

 Harness Layout ................................................................................................. 8

 Component List ................................................................................................. 9

 Component Layout............................................................................................ 9-11

 Harness Drawings............................................................................................. 13-17

 Temperature Interface Module and Temperature Sensor................................. 18

Setup &

Operation

Setup & Operation

 Basic Steps for Initial Setup .............................................................................. 19

 Home Screen Navigation & Buttons.................................................................. 20

 Settings ............................................................................................................. 21

 Product Setup ................................................................................................... 21-22

 Implement Setup ............................................................................................... 22

 Speed Input....................................................................................................... 23

 Hardware Setup (Master Switch, Lift Switch, Task Control, IntelliSection) ....... 23

 Alarm Setup ...................................................................................................... 24

 Module Addressing ........................................................................................... 24

 Rate Setup ........................................................................................................ 25

 Sentinel Operation (Home Screen, Alarm Screen, Row Detail)........................ 26

 Sentinel Software Information ........................................................................... 27

Care &

Maintenance

Care & Maintenance

 Cleaning. ........................................................................................................... 30

 Winterization ..................................................................................................... 30

 Pre-season Service........................................................................................... 30

Trouble-

Shooting

Troubleshooting

 Flow module addressing issues, No Flow Showing, Rows are Grey ................ 28

 Sentinel shows row reading too high or too low................................................ 28

 Sentinel Alarms too often .................................................................................. 28

 Sentinel doesn’t display speed.......................................................................... 29

Accessories

Sentinel Accessories

 Mounting Brackets. ........................................................................................... 31

 ISO Extensions ................................................................................................. 31

 Height Switches ................................................................................................ 31

 GPS Speed Receiver ........................................................................................ 31

 3-Pin WP Extensions, Dust Caps...................................................................... 32

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor Revised 01/26/2022

ATTENTION: Please follow all of the instructions in this manual carefully and read the entire manual

completely. Failure to do so may cause the product to function improperly or fail causing serious injury

or death.

DANGER DANGER

ANHYDROUS AMMONIA IS AN INHALATION HAZARD AND WILL CAUSE SERIOUS

INJURY OR DEATH. PLEASE USE EXTREME CAUTION WHEN HANDLING IT OR

PERFORMING ANY MAINTENANCE ON EQUIPMENT USED FOR ANHYDROUS

AMMONIA.

ATTENTION: Before performing any installation, repair or maintenance please follow the instructions

below.

1. You must be trained and certified to work with anhydrous ammonia. If you are not, please seek out

the appropriate agricultural department to attend a class to obtain the proper training and certification.

2. Wear appropriate safety goggles, gloves and breathing apparatuses.

3. Always know which way the wind is blowing.

4. Drain all tanks, hoses and piping of anhydrous ammonia COMPLETELY before removing, installing,

performing maintenance or repairing any equipment.

5. Always remove device from service before performing any maintenance or repair.

6. Have sufficient water nearby.

7. Obey all local, state and federal laws regarding the handling of anhydrous ammonia.

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 2 Revised 01/26/2022

Be Careful !

Anhydrous ammonia is an important source of nitrogen fertilizer for crops. The improper handling of

anhydrous ammonia can have catastrophic results on both plants and farm workers. Common injuries are

severe burns to eyes, skin and the respiratory tract.

 Personal protective equipment (PPE) should always be worn. Standard PPE should be non-vented

goggles, rubber gloves with thermal lining, face shield or an approved respirator. Wear a lightweight

rubber suit, or (at the very least) a long sleeve shirt and coveralls.

 Make sure anhydrous ammonia tanks are not filled beyond the recommended capacity.

 Use care when handling the hose end valve so that it does not open accidentally. Do not move the hose

by handling valve handle.

 Be sure to bleed the hose coupling before disconnecting. Use care when cleaning plugged knives as

anhydrous ammonia could be built up behind the plug.

 Use emergency water supply for at least 15 minutes if exposed to anhydrous ammonia and then seek

emergency medical attention.

 Always have a small squeeze bottle of fresh water at all times.

 Never assume NH3 lines are empty, including the lines connected to the NH3 cooler.

 Make sure the system is completely drained of NH3. It can hide in low areas of the system. Look for frost

on the hose or equipment. That usually means there is NH3 there.

 Always use high pressure hose when ammonia can be trapped in that segment, such as between the

tank and the NH3 cooler.

 Any place that has a high pressure hose should also have a hydrostatic relief valve and a bleed valve.

 Always handle valves by the body and by the wheel or latch.

 Always make sure you are upwind of potential NH3 release points.

 When you park, position NH3 equipment downwind from dwellings, people, and livestock.

 Close the valve on the tank when you stop.

 The first treatment for anhydrous ammonia exposure is WATER.

NH3 is a very dangerous product. It can kill you or blind you or worse. If you have

not taken an approved NH3 Safety class, do not work around NH3. If you have

had the course, follow ALL safety precautions ALL the time.

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 3 Revised 01/26/2022

Before you start applying NH3—

 Know the wind direction.

 Are the hoses in good condition?

 Has the expiration date been passed on any hose or other dated component?

 Are all fittings clean and free from rust?

 Do low-pressure tubes have any leaks?

 Are any knives plugged?

 Is the pressure relief valve operating correctly?

 Does the tank have five gallons of fresh water?

 Is PPE available and being worn (goggles, gloves, long-sleeve shirt) ?

Before performing maintenance on the toolbar or equipment—

 Put on gloves and goggles

 Make sure you have emergency water

 Check wind direction and stay upwind

 Park away from buildings, livestock, and people

 Before servicing, close the valve on the NH3 tank and continue application to bleed the system.

 Be sure the tank valve is closed. Turn the Master valve on and leave it on during bleeding.

 Disconnect the nurse tank supply hoses.

 Open all bleeder valves on cooler and rest of system.

 Check any hoses that have a low loop in them

 Even after bleeding, slowly and cautiously loosen any fittings to be sure there is no ammonia trapped in-

side.

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 4 Revised 01/26/2022

Things to Know About Anhydrous Ammonia (NH3)

Anhydrous ammonia is a colorless non-flammable liquefied gas. Its vapor is lighter than air and has the same

pungent odor as household ammonia. Although ammonia vapor is lighter than air, the vapors from a leak may

hug the ground appearing as a white cloud. Chemically, ammonia is 82% nitrogen (N) and 18% hydrogen (H)

and has the chemical formula NH3. Ammonia by weight is 14 parts nitrogen to 3 parts hydrogen, or

approximately 82% nitrogen and 18% hydrogen.

The definition of anhydrous is without water. Whereas household ammonia is 95% water, anhydrous

ammonia has no water. Ammonia is so hydroscopic (water loving) that one cubic foot of water will dissolve

1300 cubic feet of ammonia vapor making water the primary weapon for first responders.

Ammonia weighs 5.15 pounds per gallon (0,63 kg/L) in contrast to water which weighs 8.33 pounds per

gallon (1,0 kg/L). Since ammonia is so soluble in water there will be no layering effect when liquid ammonia is

spilled into a surface water body. Booms, pads, sweeps and pillows that are usually used to contain and

recover petroleum are ineffective on spills of ammonia into surface water.

Ammonia is a non-flammable gas but will ignite at a temperature of 1204°F within vapor concentration limits

between 15% and 28%. (Paper ignites at 450°F, coal at 750°F.) Outside conditions that would support these

vapor concentrations are very rare.

Ammonia will corrode galvanized metals, cast iron, copper, brass, or copper alloys. All ammonia piping,

valves, tanks and fittings are constructed of steel.

Liquid ammonia boils at any temperature greater than –28°F (-33º C) and will expand to 850 times its liquid

volume. One gallon of liquid will expand to 850 gallons or 113 cubic feet of gas.

Ammonia Fast Facts

NH3 Vapor

Ammonia appears in nature as a natural substance that results from decomposition.

Ammonia vapor is a colorless gas with a pungent odor.

Ammonia exists as a vapor at atmospheric conditions.

Ammonia vapor is lighter than air and tends to rise when released to atmosphere.

NH3 Liquid

Liquid ammonia released to atmosphere forms a white smoke by freezing the moisture in the air.

Liquid ammonia has a very high coefficient of expansion with temperature.

One gallon of liquid ammonia weighs approximately 5.15 lbs.; however the weight varies with temperature.

A closed container of liquid ammonia is in equilibrium with ammonia vapor and the container pressure bears

a definite relationship to the temperature.

Physical Data

Boiling point is –28°F (-33º C).

Ignition point is 1,204°F (651ºC).

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 5 Revised 01/26/2022

Storage and Handling

Ammonia is stored and transported as a liquid under pressure.

The pressure on the tank is the liquid pressure and remains the same whether the tank is 10% full

or 80% full. This pressure is dependent on the temperature of the NH3.

The maximum filling level of an anhydrous ammonia tank is 85%.

Flammability

Anhydrous ammonia is classified by the DOT as a non-flammable gas.

Ammonia vapor is flammable over a narrow range of 15% to 28% by volume in air and a strong

ignition source must be present.

Anhydrous Ammonia Application

Precision application of anhydrous ammonia starts with a proper metering system. It is crucial to be sure the

metering and control system is applying what is required.

Accurate metering of anhydrous ammonia is difficult to achieve with a conventional variable orifice meter.

Anhydrous ammonia is stored and transported as a liquid. To maintain NH3 as a liquid it must be kept below

–28°F (-33ºC) or maintained under pressure. If the temperature of the NH3 increases above –28°F (-33ºC)

some of the liquid changes to a gas as the NH3 begins to boil. Application equipment typically uses tank

pressure to deliver NH3 to the soil. An increase in tank pressure would tend to force more NH3 through the

distribution lines. The actual pounds of NH3 being applied decreases or increases as tank pressure fluctuates

unless continuous adjustments are made to the meter.

If NH3 is released into the atmosphere it will expand rapidly to occupy a volume 850 times greater than the

original liquid. NH3 readily changes from liquid to gas in the nurse tank and distribution system. Consequently

the ratio of NH3 gas to liquid continually changes as it passes through the distribution lines. About 1% of the

liquid will vaporize during the ammonia flow from the tank dip tube to the metering point. 1% liquid when

expanded to vapor at 100 lb tank pressure will occupy approximately 25% to 30% of the delivery chamber. At

50 lb tank pressure this increases to over 60% of the delivery chamber occupied by vapor. This makes

metering and distributing NH3 very difficult to do consistently and accurately.

For high volume application, wide implements, fast speeds and cold temperatures the delivery component

pieces are critical for delivering the flow needed. A flow that can be delivered at 90° may not be achievable

when the temperature drops to 40° if the system components are not designed and sized correctly. These

pieces include: Tank withdrawal valve, NH3 delivery hose and breakaway coupler, and heat exchanger

with adequate capacity.

After this precise metering the challenge of row distribution still awaits. The proper manifold system is

important for row to row accuracy. The manifold can also be a cause of flow restrictions in high flow

applications.

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 6 Revised 01/26/2022

General Description

You have purchased a SurePoint Sentinel NH3 blockage system for your equipment. This

system will be controlled by the Sentinel ECU through your in-cab ISO display. Your

anhydrous system will continue to function as usual with application rates being regulated

by your existing rate controller. The Sentinel NH3 works independently, monitoring the row-to-row accuracy

of your system and alerting the operator of blocked rows.

SurePoint currently supports Sentinel operating on the following displays: John Deere 2630 & 4640, Ag

Leader InCommand 800 and 1200, Case IH Pro 700, Trimble Fm2050 and FMX1000. The use of Sentinel

NH3 on any other display may result in diminished functionality.

A 2-pin Molex power and 12-pin Ampseal Power/CAN connector are required on your implement to connect

the Sentinel ECU to the implement bus. While some equipment manufacturers already provide this

connection, SurePoint offers harnessing to provide this connection on any implement. Ask your SurePoint

representative what accommodations may be needed for your specific equipment.

Introduction

Basic Installation Steps

1. Install all Row sensors using the guidelines laid out in the Applicator Plumbing Requirements section on

page 7.

2. Locate the 2-pin Molex power and 12-pin Ampseal POWER/CAN connectors (typically next to the rate

controller) that the Sentinel ECU will be connected to and remove the terminator. If you can’t identify

these connectors, call SurePoint. Save the terminator for Step 5.

3. Mount the Sentinel ECU using the provided bracket in a location within 4 feet of the above connection.

4. Attach the ECU harness (208-06-3536Y2) to the Sentinel ECU and plug the other end of the harness into

the above Molex/Ampseal POWER/CAN connection.

5. Use the previously removed terminator to terminate the POWER/CAN connection found on the ECU

harness.

6. Mount the SurePoint NH3 Temperature Interface module (226-01-4210Y1) to the back of the ECU

bracket used in step 2.

7. Plug the 4-pin Deutsch connector on the temperature interface module into the Flowmeter Bus 1.

8. Unplug the 3-pin Weather Pack dust plug that is connected to the temperature interface module and save.

9. Use a 3-pin Weather Pack extension cable (206-03-XXXX) to connect the temperature interface module

to the row sensor mounted on Row 1.

10. Make sure all row sensors are daisy chained together, using 3-pin Weather Pack extension cables to get

from NH3 manifold to NH3 manifold.

11. Install the 3-pin Weather Pack dust cover removed in step 8 and install it on the last row.

SurePoint Ag Systems

396-4519Y1 Sentinel NH3 Blockage Monitor 7 Revised 01/26/2022

Introduction

SurePoint Sentinel NH3 Row Sensor Installation.

1. At the first NH3 manifold, disconnect the first NH3 line saving the hose clamp.

2. Use the included 3” piece of EVA tubing and connect it to the NH3 manifold hose barb.

3. Slide both hose clamps on the EVA tubing.

4. Push Row Sensor into the 3” piece of EVA tubing, turning the sensor so the wires drop straight down and

tighten both hose clamps.

5. Re-connect NH3 line disconnected in step 1.

6. Continue back at step 1 until all Row sensors are installed.

NH3 Row Sensor

3” EVA Tubing

Hose clamps

SurePoint Sentinel NH3 Applicator Plumbing Requirements.

1. All hose/ tubing from the manifolds must be equal in length with no splices or kinks.

2. All excess hose/ tubing from the manifolds must be fastened horizontally to the toolbar in coils no smaller

than 18” in diameter.

3. If you have multiple manifolds, make sure they are all the same make and model. Make sure all the hose

barbs are from the same manufacturer. NOT all hose barbs have the same inside diameter!

4. If you are not using all the ports on the NH3 manifold, make sure you evenly space out the plugs around

the manifold.

5. Make sure all application knives are from the same manufacturer. Take time to inspect each knife to

ensure all will flow equal. Make sure to pay attention to the NH3 application tube looking for kinks or

bends that aren’t normal. Also inspect for weld slag at the weld points.

6. Make sure that plumbing from the splitter to the manifold is all equal length. If doing more than two

sections, make sure you use a high quality splitter to get even flow to each NH3 manifold.

SurePoint Ag Systems

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