Baker Hughes 1900/65A General Purpose Equipment Monitor

Reset Input: Used for remotely resetting all self-locking alarms and relays.

Sensor power supply and interface

Two wire current mode: Provides a constant current source (3.3mA ± 5%) to power the two wire IEPE sensor.

Three wire voltage mode: Provides -24Vdc voltage to power the three wire sensor, with short-circuit protection function (maximum short-circuit current of about 23.6 mA).

4-20 mA and buffer output

4-20mA: The output is proportional to the full-scale range of the selected variable, with an update rate of 100ms and a resolution of 10mA. It can be configured to output clamp current (default 2mA) when the channel is "non OK" or "bypass".

Buffer output: The output impedance is 550 Ω, ensuring the fidelity of signal transmission. The minimum buffer output bandwidth on the host module is 40 kHz.

Physical specifications and environmental adaptability

The 1900/65A design is sturdy and adaptable to harsh industrial environments.

Power supply: Supports a wide range of 18-36 Vdc input, with a typical power consumption of 8.5W.

Environment: The working temperature range is -20 to+70 ° C, the storage temperature is -30 to+90 ° C, and it can operate at 95% non condensing humidity.

Installation method: DIN rail installation, wall mounted (Bulkhead) installation, and NEMA 4X/IP66 waterproof and dustproof housing (with observation window) options are available, suitable for various indoor and outdoor occasions.

Mechanical dimensions: The host module is compact in size, measuring 196.9 mm x 149.4 mm x 74.4 mm, making it easy to install in control cabinets with limited space.

Compliance and Industry Certification

As an industrial product aimed at the global market, the 1900/65A has passed multiple strict certifications to ensure its safety and reliability.

Electromagnetic compatibility (EMC): Complies with EN 61000-6-2 (anti-interference) and EN 61000-6-4 (emission standards).

Electrical safety: Complies with EN 61010-1 standard.

Hazardous Area Certification:

CSA/NRTL/C: Suitable for Class I, Division 2, Groups A, B, C, D, as well as Class I, Zone 2 and other hazardous areas in North America.

ATEX/IECEx: Obtained explosion-proof certifications such as Ex nA nC IIC Gc, allowing for use in corresponding European and international hazardous areas.

Special precautions: When installing in hazardous areas, ensure that the relay contact voltage is below 30 Vac rms or 30 Vdc, and the current is below 5 A to minimize risks.

RoHS: Compliant with the EU Directive on the restriction of the use of certain hazardous substances in electronic and electrical equipment.

Order information and attachments

The ordering code 1900/65A-AA-BB-CC-DD-EE for 1900/65A clearly defines the configuration of the device:

AA (power option): 00=18-36 Vdc; 01=110-220 Vac (requires external power supply).

BB (display option): 00=no display; 01=direct installation; 02-05=Display module with cables of different lengths and types.

CC (installation option): 00=none; 01=DIN rail; 02=Wall mounted board; 03=NEMA 4X/IP66 enclosure; 04=1900/55 replacement kit, etc.

DD (authentication option): 00=none; 01=Multiple authentication.

EE (communication option): 00=none; 01=Modbus communication.

In addition, Bently Nevada also offers a range of accessories, including backup display modules, user guides, field wiring diagrams, external power supplies, installation brackets, various connecting cables, and local security barriers for hazardous areas (such as the MTL 7728/7796 series) to meet the application needs of different sites.