Amron Two-Diver Air Control and Communications System REFERENCE ONLY

This item is no longer available. See items 8211-01 or 8225iC-01 for alternates to the 8225-01.

ENHANCEMENTS:

• AMCOMMAND™ II Two Diver - Air Control/Communications System is a portable, self-contained, two diver complete commercial dive system.
• This air control system provides all of the operations necessary to monitor and control the commercial diving operation.
• It is a central control point for the supply of breathing air to the commercial divers. This Amron system monitors the commercial divers' depth, provides an audio alarm if the commercial divers' air pressure falls below a preset limit, and provides superior hardwire diver communications for two commercial divers and topside personnel.
• The system is housed in a rugged case constructed of pressure fused fiberglass that provides a convenient, compact, and professional system designed for years of reliable operation.
• Easy set-up with high pressure air sources or low pressure air, which greatly extends search and rescue diving capabilities.
• The system comes standard with the field proven AMCOM II Series Communicator and is a full-featured hard-wired two-diver communicator with independent microphone and earphone volume controls for the tender and each diver. The communicator can operate in both 4-wire (full duplex), or 2-wire modes. The communicator has a built-in internal charger and can be operated from either a 90-264 V_AC, internal 12 V_DC battery, or an external 12 V_DC power source.

High Pressure Side:

• High air pressure inputs include two color coded (red and blue) SCUBA bottle yokes with six foot air hose whips.
• Standard 3000 PSI MAX input when using CGA850 yokes.  Optional 4500 PSI MAX input when installing 300 Bar DIN Adapters, Amron Part number HAS-300D.
• Each input has a 0-6000 PSIG gauge and shut off valve to monitor and switch from one high pressure air source to the other.
• The added safety feature of check valves provides protection against back flow of air from a full tank into an empty tank when switching high pressure air supply sources.
• High pressure air is reduced to low pressure via a Tescom pressure reducing regulator with a pre-regulator in-line 50 micron filter. A 0-600 PSIG gauge monitors the output pressure.
• A relief valve (factory set at 285 PSIG) prevents over pressurization.

Low Pressure Side:

• Input check valve permits simple switching to back-up high pressure air in the event of low pressure air failure. Back-up high pressure air supply can simply be turned on.
• Divers air hose connections are O2 fittings, controlled by quarter turn ball valves permitting unrestricted flow. Note: O2 fittings can be converted to JIC upon request.
• The LP input with safety check valve has a #6 JIC fitting and is protected from over pressurization by an over pressure relief valve set at 285 PSI.

Pneumo (Depth Monitoring) System:

• The heart of the pneumo system are 2 ea. 6 in. precision gauges with 0.25% % of full scale accuracy and dual scale readings of 0-250 feet of seawater (FSW) and 0-76 meters of seawater (MSW). The gauge dials have a glare free face, mirror band with clearly marked increments for fast accurate readings with 1 foot divisions.
• Regulating Valve, KEL-F Seat: (2) with O2 Fitting Chrome Plated Brass.
• The diver’s air supply is monitored by a low pressure alarm that activates an audio alarm alerting the tender of low air pressure conditions. The air pressure switch is preset at 100 PSIG and can be manually adjusted to any pressure between 22.5 and 112 PSIG.

Hardwire Communications:

• The Two-Diver hardwire communicator is a full-featured hard-wired communicator with independent microphone and earphone volume controls for the tender and each diver.
• The communicator has a built-in internal charger and can be operated from either a 90-264 V_AC, internal 12 V_DC battery, or an external 12 V_DC power source.
• Can be operated in both 2-Wire and/or Full Duplex (4-Wire) communication modes. Modes can also be used simultaneously.
• The communicator comes standard with Microphone Auto Detection that identifies the type of microphone each diver is using and automatically adjusts for optimum performance. This communicator has the ability to operate with any combination for both dynamic and pre-amplified microphones.
• The noise canceling hand-held push-to-talk microphone improves the quality of communication by eliminating topside noise to the divers.
• Panel: Black Powder Coat over Stainless Steel with White Silkscreen Graphics

Newly Designed Hardwire Communicator Enhancements:

• Ultra-low noise circuit combined with noise suppression circuitry produces crystal clear speech. Automatic gain adjustment will guard audio signal from distortion, enhance speaker protection and audio quality. Increases band width 47%.
• Audio amplifier card deploys the state-of-the-art Class-D digital audio power amplifier. Has very low power dissipation, produces less heat, and extends battery life up to 32%.
• The audio amplifier card has adjustable gain settings to accommodate different communication applications and environments.
• EMI is achieved through spread-spectrum and de-phase control techniques providing for optimum integration with diving systems.
• The built-in internal charger allows for simultaneous charging and operation of the unit while protecting the rechargeable battery from being overcharged. Automatically supplies power to the audio amplifier when AC power is disconnected to allow for continued operation.

SPECIFICATIONS:

Air Control:

High Pressure:

• Input Supply Pressure Range - Standard Unit: 500-3000 PSIG
• Input Supply Pressure Range - DIN Adapter (Optional): 500-4500 PSIG
• Regulator Outlet Range: 0-250 PSI
• (1) Tescom Pressure Reducing Regulator
• (2) Yokes & Whips: 6 ft. blue and red
• (2) Inlet Connection: #4 JIC (Stainless Steel)
• (2) Inlet Valve: Source Select Regulating Type
• (2) Input Gauge: 0-6000 PSI: Accuracy +/- 1.5%
• (2) Check Valve: 1/3 PSI
• (1) In Line Filter: 50 micron

Low Pressure:

• (1) Inlet Fitting: #6 JIC
• (1) Check Valve: 1 PSI
• (2) Diver Outlet: Ball Valve
• (2) Output Fitting: Oxygen
• (1) Pressure Gauge, 0-600 PSI: Accuracy +/- 1.5%
• (1) Over Pressure Relief Valve:  Set at 285 PSIG

Pneumo (Depth):

• (2) Pneumo Gauge: Mirrored Scale, 6 in., Dual Scale 0-250 FSW/0-76 MSW, 0.25% of Full Scale
• (2) Pneumo Valve: Regulating Type, KEL-F Seat
• (2) Pneumo Output Fitting: Oxygen

Hardwire Diver Communications:

• Input Impedance (Each Input): 250 Ohms
• Frequency Response:300 - 10000 Hz
• Common Mode Rejection: 40 dB Minimum
• Current Drain Maximum Full Volume: 3 Amps
• Minimum Quiescent: 0.190 Amps
• Output Impedance: 4 Ohm
• Power Supply Voltage: 12 V_DC Nominal (9 V_DC Min - 16 V_DC Max)
• AC Power Operating Range: 90-264 VAC, 50-60 Hz
• Sensitivity (Input): 0.5 mV
• Output Power (RMS @ 4 Ohm Load, 12 VDC): 10 Watts Audio
• Battery Life: 45 Hours

Panel:

• Panel Material: Black polyester powder coated over stainless and aluminum
• Graphics: Red, white blue and yellow silk-screened
• Color: International Yellow

Case:

• Dimensions 20 in. W x 14 in. D x 12 in. H (50.8 cm x 35.56 cm x 30.48 cm) with lid closed
• Dimensions 20 in. W x 14 in. D x 21 in. H (50.8 cm x 35.56 cm x 53.34 cm) with lid open

Weight:

• Weight 70 lbs. (31.75 kg)

Included With Communicator:

AMCOMMAND™ II 8225-01 Two Diver Air Control and Communications System includes:

• (1) Amron 2405-28 Hand-Held Push-to-Talk Microphone
• (1) Amron 8225-500 HP Yoke/Hose Assembly
• (1) Amron 8225-UM Series Two Diver Air Control Systems User Manual Rev 1.0

Available Options:

• Amron HAS-300D Din Adapter 300 Bar
• Amron 2401-28 Deluxe Headset with Boom Mic
• Amron 2460-28 Standard Headset with Boom Mic
• Amron 2822-28 Remote Walk-and-Talk (4-wire mode)
• Amron 2821-28 Remote Walk-and-Talk (2-wire mode)

WARNING: DO NOT USE THE AMRON 8225-01 FOR THE FOLLOWING:

• Mixed gas diving operations with an oxygen level greater than 25%.
• Oxygen or oxygen enriched breathing mixtures above 25%.