Honeywell KRA-405B Radar Altimeter

Honeywell KRA-405B Radar Altimeter

DESCRIPTION

The KRA-405B radar altimeter (RADALT) is a lightweight, solid-state, airborne altimeter that provides accurate altitude measurements above terrain during various portions of flight. With more than 10,000 produced and sold to date and more than four million service hours, the KRA-405B RADALT has proven to be one of the most reliable and industry proven radar altimeters available, even in the modern 5G environment.

SPECIFICATION

Frequency: 4.2 GHz to 4.4 GHz

Operating range: 0 to +2500 feet

Accuracy: ± 3 ft or ±3%, < 500ft. ±5%, >500ft.

Analog and digital outputs

Temperature range: -55°C to 70°C (operating), -55°C to 85°C (non-operating)

Size: 3”x3.5”x11”

Weight: 3 pounds

TSO C87/ETSO-2C87 (1997) airborne low-range radio altimeter

DO-160B (environmental conditions and test procedures for airborne equipment)

DO-155(minimum performance specification - airborne low-range altimeters)

DO-178B Level A (software considerations in airborne systems and equipment certification)

Key Benefits

Highly Accurate Measurement: The KRA-405B is capable of providing highly accurate altitude measurements of up to ±3 feet (or ±3 per cent) below 500 feet and ±5 per cent above 500 feet. This high-precision measurement capability is critical to ensuring flight safety.

Wide Operating Range: The radar altimeter's operating range covers from 0 to +2500 ft, meeting the altitude measurement needs of most missions.

Reliable Performance: The KRA-405B has been manufactured and sold over 10,000 units to date, with over 4 million operating hours, proving its outstanding reliability and durability.

Adaptable to harsh environments: The radar altimeter has an operating temperature range of -55°C to 70°C (in operating condition) and can withstand temperatures from -55°C to 85°C in non-operating condition, ensuring stable operation in different climatic conditions.

Multiple Output Modes: KRA-405B provides both analogue and digital output modes, which is convenient for users to choose according to their actual needs.

Instructions and warnings related to the operation of the product:

The following specifications must be strictly observed:

 The technical specifications and typical applications of the product system must be strictly observed.

 PERSONNEL TRAINING: Only trained personnel may install, operate, maintain or repair the product system. These personnel must be instructed on the

These personnel must be instructed and briefed on the conditions in the hazardous area.

 Unauthorised modifications: No modifications or structural changes may be made to the product system.

 Maintenance Responsibility: It must be ensured that the product system is only used under appropriate conditions and in a condition that is fully fit for purpose.

 Working environment: The user must fulfil the specified environmental conditions:

Safety regulations

The following safety regulations must be fully observed when (maintenance) work is carried out on the product system:

1 Disconnect completely.

2 Secure to prevent reconnection.

3 Confirm that the installation has been completed.

4 Perform grounding and short-circuiting.