FAQ

Can other sensing devices be used with Cartell systems?

Yes, we provide a relay output for other sensing devices.

Both of our control units (CT-2B, CF-2C) support any sensing device that has a N.O., floating, dry relay contact (motion, infrared, microwave, etc.).

Simply hook another sensing device on the terminal strip where our probe hooks up and place a 500-1000 ohm resister between the terminals.

You may use other sensing devices and our probe together on the same system. There is no limit to the amount or variety that can be used on a single system.

For more information, consult the manuals under DriveGuard Basic™, Ultra™, and Integrator™ systems.

How wide a driveway does the sensor probe cover?

The sensor probe will detect a slow-moving, small car about 5-8 feet away. Considering the width of the car, the Cartell sensor probe will comfortably cover a 12 foot wide driveway when buried beside it, and will cover a 24 foot wide driveway when buried in the center of the drive. Two probes may also be used, one on each side of the driveway, to cover approximately 24 feet.

How is Cartell’s sensor different from a loop detector?

Cartell's sensor probe is based on magnetometer technology. That means it depends on the earth's magnetic surface for its field of detection.

There are many advantages to this:

1. Unlike the loop, Cartell does not have to create its own field.

2. Unlike the loop, Cartell does not require electricity for its sensor to operate.

3. Unlike the loop, Cartell's sensor does not need to be replaced under normal circumstances. There are Cartell sensors still working flawlessly installed since in the mid-1970's.

4. Unlike the loop, it is buried beside, not in, the driveway. It will cover a twelve foot wide driveway from the side. If a wider driveway exists, two sensor probes may be used, one on each side of the driveway, or one sensor probe may be placed underneath the drive in the middle.

5. Cartell experiences no false alarms caused by wind and weather, animals, people, blowing leaves, etc. as experienced by motion detectors.

In all fairness, we hasten to add that the Cartell sensor probe cannot, like the loop, detect presence and therefore should not replace a loop in all instances, e.g. Cartell cannot act as as a safety for a gate operator. When the vehicle stops, Cartell stops detecting until the vehicle moves again.

Cartell's sensor probe is not a presence detector (like a loop) and therefore cannot be used for traffic control.

Cartell's normal sensor probe is suitable for driveways more than 75 feet long; its SD-6 sensor probe system is suitable for driveways less than 75 feet.

How far away does the CT-6 sensor probe need to be back from outside road traffic? And why is this true?

The CT-6 sensor probe should be at least 35 feet back from residential traffic (35 MPH or less) and 50 feet back from highway traffic (35 MPH or more). The probe has to be back because the faster the traffic is moving and the larger the vehicle, the more sensitive the sensor probe becomes (because more dramatic are the disturbances to the earth's magnetic field). Many false alarms will occur if it is too close to outside road traffic.

How deep does the sensor probe need to be buried?

Bury the probe 6-8 inches below the surface parallel to and beside the driveway. We also suggest you coil up ten feet of cable with the probe in case it needs to be relocated, repaired, etc.

Do you have a system I can put closer to outside road traffic?

Yes, for several years now. Our patented SD-6 dual probe system (called DriveGuard S.D.™) can be as close as 10-15 feet to residential or highway traffic. The SD-6 uses the same control unit(s), but eliminates the need to be back farther from outside road traffic.

When used with the DriveGuard Basic™, Ultra™ and Integrator™ systems, residents with shorter driveways can enjoy all the features of those systems.

What type of cable is attached to the sensor probe?

It is made up of 22 gauge twisted wires, encased in a fully shielded, polyurethane-coated direct burial cable. Does not require conduit and may be spliced in the field with an underground splice kit provided by Cartell.

Can the probe cable be spliced?

Yes, this cable can be spliced with an underground splice kit because it is coated with polyurethane (which adheres to epoxy, unlike PVC and Polyethylene). This sets us apart from our competition and their choice to use cheaper cable. We spend extra to save you time in the field.

Don't dig up or re-install; simply splice in repair situations or when wanting to add length to the cable. With use of an underground splice kit (available from Cartell), you can make a permanent splice.

Can I run the cable in the same trench or conduit as power, water and telephone lines?

You can run the cable in the same trench, but not in the same conduit as power, water and telephone lines. Follow national and local electrical codes. There is no electricity in the coil, but codes still prohibit running it in the same conduit.

Do I have to put the direct burial cable in conduit?

No, conduit is not required. Simply use a lawn edger or trencher and bury the cable 3 inches under the surface in cultured grass or 6-8 inches deep in field/uncultured grass. However, in a stony area or where landscaping may occur, it is suggested non-ferrous conduit be used for mechanical protection. Also, use conduit when cable is being run on top of the ground, e.g. through the woods (animals enjoy the taste of our cable).

One advantage to our cable is its polyurethane coating. Unlike other cable coatings (Polyethylene, PVC, etc.), polyurethane will bond with epoxy. This makes field repairs possible.

If you have one of our competitor's systems, the sensor probe and cable must all be ripped out and re-installed. Thankfully, not with Cartell. Simply splice a new probe with ten feet of cable on the existing cable or splice a piece of cable at the break and you're done. We have splice kits available.

How much cable can be on a sensor probe?

There is no limit to the length of cable, except for shipping purposes. We stop at 3,000 feet, but thousands more feet can be spliced on without any loss of sensitivity. Our normal cable lengths are in 50 foot increments up to 500 feet and 100 foot increments from 500 feet and up. Our shortest cable length is ten feet, used in repair situations.

What variety of systems do you have?

We have seven systems altogether that meet the needs of several markets: home builder, security, home automation, gate, electrical, and commercial.

Do you have any wireless systems?

The CP-1TT Remote system is made to trip transmitters. It is powered by a 9 volt alkaline battery or a 12 volt battery. Eighty feet of cable is attached to the probe (cable length can be shortened). Simply bury the cable up to a weatherproof box, install the small circuit board in the box with your own transmitter. Put your own receiver in the home and you can use it to trip a home automation system, etc. for pre-programmed functions.

We are working on an RF system at present. It is in the prototype/field test stage. Please check back for more news on this. We are striving to be in full production by spring 2014.

Do any of your systems have directional features?

When you use two CT-2B control units and two CT-6 probes and hook them up to a CT-A1 annunciator, you can make a pulsing tone when one probe is passed and a steady tone when the other probe is passed.

Does Cartell use a motion detector to detect vehicles?

No. Cartell's sensor probe detects moving steel only. It is not set off by motion. Therefore, there are no false alarms from people, animals, blowing leaves, etc.

You will always be alerted when a vehicle approaches, but only a vehicle.

How does Cartell work?

Cartell's sensing device is based on magnetometer technology. The earth is a magnet and its invisible magnetic lines run parallel across its surface.

When moving steel enters these magnetic lines they are attracted to the object, causing fluctuations. These fluctuations are detected by Cartell's sensor.

When this occurs, a tiny sine wave signal is sent to the control unit in the home which interprets and magnifies the signal and interacts with the features the control units support.

What is the difference between the GateMate™ (CP-3) 3-Wire and 5-Wire Models?

You can use the 3-Wire model if:

1. DC power is available for auxiliary devices. That means the same power available for remotes, radios and keypads is used to supply power for the free exit function.

2. The gate operator trips to ground for free exit open

3. Only one input is required for free exit

You need to use the 5-Wire model if:

1. There are two inputs for the free exit function and the terminals are not designated which is free exit and which is ground

2. The only power available for free exit is AC or direct battery hook-up

3. The CP-3 is being integrated with home automation or security systems

Is there any issue with signal loss from the driveway sensor when running long distances. My application has the probe about 1000′ from the house. Thanks!

The signal from the sensor is such a minuscule sine wave, that the sensor can be literally miles away from the house without any loss of signal or sensitivity. If there seems to be a loss of sensitivity, make sure the sensor and control units are operating correctly and call technical support if problems persist.

What is the best way to find the sensor probe when I’m not sure where it is?

If the system is not working, the best way is with a metal detector.

If the system is working try swinging a shovel near the ground in the area you think it might be buried and having someone else listen inside for the sounder.

When I bench test the CP-3, do I need to connect the probe to power and wait the noted 2-3 minutes for the unit to be ready to test? I am assuming that it takes 2-3 minutes to power up and perhaps run through start up?

Yes, in order to bench test the CP-3, power must be applied to it and the "warm up" time should elapse before testing it.

Can the actual sensor be affected by electrical wiring run within a foot from it?

Yes, the sensor can be affected by electrical wiring run within a foot of it. The electrical wiring should be at minimum 6-8 feet away from the sensor probe. This includes electric wire, invisible fences and telephone wires.

When such wires are run close to the sensor they induce a signal into it, making the trip point unstable and causing false readings. Thus, the sensor requires an electromagnetic-free zone around it in which there are no wires.

This does not apply to the sensor cable. The sensor cable can be run in the same trench as any wire (check local codes) so long as those wires are kept at least 6-8 feet away from the actual sensor.

I would like to use the DriveGuard Basic in a project. Could you tell me how the wire length works? I would need about 500′-600′. Do we order it in the custom length as needed or make our own extension?

It is advisable to purchase a sensor probe with the amount of cable you need rather than splicing on to it. The more splicing you do to a cable the more potential for problems./p>

Remember the amount you need to go into the house and to the control unit and add that to the length. Better to have too much cable and cut it off than to have too little and have to splice on to it./p>

We offer custom cable amounts in increments of 50' up to 500' and in increments of 100' from 500-3000'. We stop at 3000' because of shipping./p>

The length of cable has no affect on the sensitivity of the sensor probe./p>