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The RBT IV consists of an Alco-Sensor® IV and a programmed Microprocessor Printer which prompts the step-by-step test sequence, prints a hard copy of the result and stores test information to memory.


The standard RBT IV will request the entry of subject and/or operator information prior to performing a test and then will produce a hard copy result documenting the collected data along with pertinent test result information. Specific test protocols are available, off the shelf, including DOT, NRC and Law Enforcement protocols. Custom protocols in a variety of languages can also be designed upon request with three or four digit results.

ApprovalsNHTSAListed on the Conforming Products List for Evidential Breath Measurement Devices.
Analytical SystemElectrochemical Sensor (Fuel Cell)Select sensor, manufactured to Intoximeters exacting specifications for accuracy, repeatability and long life.
Measurement Range0.000 to 0.400 g/210LThe off the shelf instrument is designed to offer a range of results that our customers commonly encounter when performing breath alcohol testing.  Custom ranges, and results reported in a most units of measure are available upon request.
Accuracy and PrecisionHighly accurate and precise evidential grade resultsIntoximeters fuel cell based instruments set the industry standard for accuracy and precision.  These precise and linear devices offer consistent output that results in evidentiary grade analysis.
Sensor SelectivityHighly specific for alcoholFuel Cell sensors are sought after for their specificity to alcohol.
Sampling MethodFlow, Volume, Breath DropInstruments running the standard software require a consistent flow, a minimum volume and then a drop in flow before sampling a deep lung breath.  Alternate sample capture algorithms are available in customized programs.
Testing EnvironmentInstrument TemperatureThe temperature of the instrument must be at, or between, 10 and 40 degrees C.
Ambient TemperatureAs long as the instrument is at temperature, the instrument can be used at, or between, ambient temperatures of -20  to 70 degrees C.
Humidity10% to 100% relative humidity  (The instrument is not designed to be used under water.)
Ambient Pressure600 mbar to 1400 mbar; 450 mmHg [0 °C] to 1050 in mmHg [0 °C]
MouthpieceStyleOne-way check valve
InstallationInsert to power unit ON
Data InputKeypadCustom touchpad with numeric keyboard and custom function keys
Visual OutputInstrument DisplayRed, four character LED
Keypad DisplayTwo line, 20 character backlit green LCD display
Audio OutputBeeperAudible tone to support displayed messaging system
Data OutputPrinterInternal impact printer
SerialWith optional serial adapter, the printer can download stored test data serially and, with proper software, can communicate via serial modem
Data StorageNumber of Tests (AS IV)Last test
Number of Tests (RBT IV)Up to 1,000 tests depending upon on-board memory type
Power Options(AS IV) Disposable BatterySingle 9V alkaline battery
(AS IV) Rechargeable Battery9V rechargeable battery – Optional
(RBT IV) Printer Battery12V rechargeable battery (comes with charger)
(RBT IV) 12V Power SourceOptional 12V cigarette adapter
Case Construction(AS IV) Metal flake impregnated ABSRugged casing protects instrument and internal components.
(RBT IV) ABS Plastic Carrying CaseThe instrument is offered with a black Pelican 1400 waterproof hard carrying case that holds both the AS IV and the RBT IV
(RBT IV) Nylon Carrying CaseOptionally, the instrument can be purchased in a light weight blue nylon carrying case which allows storage of additional dry gas calibration equipment
Size, Shape and WeightDimensions13.5” x 12” x 6”
Weight12 lbs  (5,443 grams)
Measurement TypesAutomatic Direct BreathAuto sampling of subjects’ deep lung breath samples
Manual Direct BreathManual sampling option for subjects who cannot meet the minimum flow and volume requirements of the instrument.
SecurityPasswordOptional password protection is available


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