Bently Nevada 167699-01 (1900/65A) General Purpose Equipment Monitor Full Product Specification

The 167699-01 is the front panel display and control assembly matched with 1900/65A main monitor unit from Bently Nevada, classified as General Purpose Equipment Monitor (GPEM) developed for integrated online condition monitoring and protection of all types of medium and small rotating machinery. Manufactured in USA with original industrial grade circuit design, this all-in-one panel-mounted instrument eliminates the requirement of dedicated rack chassis, realizing local measurement display, alarm interlock and remote data transmission in a single compact unit. It is widely deployed across thermal power, petrochemical, metallurgy, water supply and chemical processing industries to monitor pumps, induced draft fans, blowers, small steam turbines and screw compressors, identifying mechanical faults including rotor unbalance, shaft misalignment, bearing abrasion and axial thrust overload to trigger early warning or equipment shutdown protection and reduce unplanned equipment outage. The 167699-01 variant is the first-generation front display version of 1900/65A series, while 167699-02 is the upgraded revised edition with modified internal terminal definition and partial circuit optimization.

This monitor is configured with total eight physical input channels split into two independent functional groups, all channels support full software parameter configuration without hardware modification on site.Four dynamic transducer input channels are available for mechanical parameter collection, compatible with multiple mainstream industrial sensors including 3300XL series eddy current proximity probes paired with 16925 series extension cables for shaft radial vibration and axial displacement measurement, two-wire or three-wire piezoelectric accelerometers and magnetoelectric velocity pickups for casing vibration monitoring, as well as speed pickup sensors for rotating speed signal acquisition. The internal circuit provides regulated -24VDC excitation power supply specially for Bently original eddy current probe system, matching standard 7.87V/mm transducer system impedance specification.Another four channels are dedicated to temperature acquisition, supporting two-wire and three-wire PT100 RTD sensors plus Type E, J, K, T standard thermocouples to continuously monitor bearing bush temperature, equipment shell surface temperature and process medium temperature nearby monitored machinery, each channel features independent software-defined measuring range and scaling setup according to actual field working condition.

Six independent Form C passive relay contact outputs are equipped for hierarchical alarm and protection control, divided into Alert early warning level and Danger shutdown level. Users can program threshold value, action delay time and interlock logic for every single relay via front panel keypad or upper computer configuration software, each relay can be bound with single or multiple measuring channels to avoid false tripping caused by instantaneous signal fluctuation via adjustable delay setting. These dry contact terminals directly connect with site PLC, DCS interlock circuit or local audible-visual alarm device to realize onsite fault prompt and emergency equipment stop.Four isolated 4–20mA analog output channels are reserved for real-time measured value transmission to centralized control system, each output channel can be mapped to arbitrary measuring channel with full-scale range programmable, realizing continuous trend recording on DCS and SCADA platform. Besides standard analog output, buffered signal output terminals are reserved for each transducer input channel to connect portable vibration tester or external data recorder for offline waveform analysis and field calibration verification.

The monitor adopts high-precision 24-bit AD conversion chip for all analog signal sampling, with effective signal bandwidth covering 0.5Hz to 25kHz, built-in configurable eight-order digital filtering circuit including high-pass and low-pass filter to filter out high-frequency clutter and low-frequency interference noise from industrial frequency converter and high-current power cable nearby, improving measuring accuracy of effective vibration component. Typical measurement precision of vibration and displacement channel is controlled within ±1% full scale, temperature measuring error is less than ±0.5℃ under normal ambient working environment.An internal fault diagnosis circuit runs real-time OK status detection for every input channel, automatically capturing sensor open circuit, short circuit, power loss and cable disconnection faults and storing corresponding fault codes into onboard event log memory. The built-in storage space supports saving up to 200 pieces of historical event records including alarm occurrence time, fault type and channel location for later maintenance troubleshooting and equipment failure root cause analysis.

Standard RS485 physical interface with Modbus-RTU communication protocol is integrated for remote data access, enabling upper monitoring system to read real-time measured values, Alert/Danger alarm status, channel fault information and historical event list, supporting seamless access to mainstream DCS and industrial control platforms. Local operation is realized via front panel integrated liquid crystal display and function keypad, operators can browse real-time numerical value of all channels, check historical alarm logs, modify measuring range, alarm threshold and filter parameters without extra configuration equipment on site; matched official 1900 series PC configuration software can also be used for batch parameter setting and offline configuration backup via communication port.

Nominal working power supply is 24VDC with wide input range from 18VDC to 36VDC to adapt unstable industrial site power fluctuation, typical total power consumption of whole unit is about 3.2W with rated operating current approximately 0.3A at rated 24VDC input.Allowable continuous operating ambient temperature ranges from -20℃ to +70℃, permissible storage temperature covers -30℃ to +90℃, suitable for cabinet installation in high-temperature plant room and low-temperature outdoor auxiliary equipment room environment. The overall dimension is 196.9mm × 149.4mm ×74.4mm, net weight of complete monitor is around 0.77kg, designed for standard cabinet panel mounting installation with front panel fixed in control cabinet and wiring terminals arranged on rear side of unit, protection grade of instrument housing is IP20 for indoor cabinet application. The product has obtained CE and UL industrial certification to meet international electrical safety standard requirements.

This monitor is applicable for condition protection of various general rotating equipment in multiple industries: feed water pump and induced draft fan in thermal power plant, centrifugal pump and circulating compressor in petrochemical factory, blowers and exhaust fans in metallurgical smelting workshop, water supply pump and sewage pump in municipal water treatment project, as well as small air compressor and industrial gear unit in manufacturing factory. It can replace discrete single-point vibration switch and temperature transmitter to realize multi-parameter centralized monitoring for single set of equipment with lower overall investment cost compared with large rack-type TSI monitoring system.

All original brand-new 167699-01 products pass full functional test, high-low temperature cycle aging test and full-channel calibration inspection before factory delivery to guarantee consistent measuring performance of each unit. Standard factory warranty period is twelve months starting from equipment delivery date; within valid warranty period, free replacement or maintenance service is available for failures caused by inherent manufacturing defect under specified normal installation and operating environment, while damage induced by artificial cutting, wrong wiring, mechanical extrusion, chemical corrosion and overvoltage misuse is excluded from free warranty coverage.