{"product_id":"bently-nevada-81544-01-i-o-module-signal-record-terminal","title":"Bently Nevada 81544-01 I\/O Module Signal \u0026 Record Terminal","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 81544-01\u003c\/strong\u003e is an \u003cstrong\u003eI\/O Module \/ Terminal Board\u003c\/strong\u003e designed for the 3300 Series and 3500 Series machinery protection systems. This module serves as the physical interface for transducer I\/O and record terminals, providing secure electrical connections between field sensors and the monitoring system. The 81544-01 is specifically associated with Dual Differential Expansion Monitor functions and Keyphasor I\/O applications, supporting 2 channels of signal input and output.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Bently Nevada (Baker Hughes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e 3300 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e I\/O Module \/ Terminal Board \/ Xducer I\/O \u0026amp; Record Terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 81544-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Transducer I\/O and Record Terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 2 channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Monitors:\u003c\/strong\u003e 3300\/25 (Dual Accelerometer), 3300\/45 (Dual Differential Expansion), 3300\/48 (Dual Thrust), 3300\/20 (Dual Thrust)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Range:\u003c\/strong\u003e 0 to 20 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Input Voltage:\u003c\/strong\u003e 250 V AC\/DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Input Current:\u003c\/strong\u003e 10 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination Temperature Range:\u003c\/strong\u003e -55°C to +125°C (-67°F to +257°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 23 × 6 × 11 cm (packaging)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 kg (0.8 kg per some sources)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHS Code:\u003c\/strong\u003e 85389091\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Channel Design:\u003c\/strong\u003e Supports 2 channels of transducer I\/O, enabling differential expansion or dual thrust monitoring from a single terminal board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Voltage Input Capability:\u003c\/strong\u003e Accepts up to 250 V AC\/DC input voltage, providing robust protection against transient overvoltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates from -55°C to +125°C, suitable for extreme industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Monitor Compatibility:\u003c\/strong\u003e Compatible with multiple 3300 series monitor modules including 3300\/25, 3300\/45, 3300\/48, and 3300\/20.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Terminal Connections:\u003c\/strong\u003e Provides robust screw terminal connections for field wiring, ensuring reliable long-term signal integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Recording Outputs:\u003c\/strong\u003e Dedicated record terminals enable connection to external data acquisition or recording equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDifferential expansion monitoring on steam turbines\u003c\/li\u003e\n\u003cli\u003eDual thrust position measurement\u003c\/li\u003e\n\u003cli\u003eKeyphasor signal I\/O for phase reference\u003c\/li\u003e\n\u003cli\u003eDual accelerometer signal termination\u003c\/li\u003e\n\u003cli\u003eExternal recording equipment interface\u003c\/li\u003e\n\u003cli\u003eSignal conditioning and distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Verification:\u003c\/strong\u003e Confirm your monitoring system uses one of the compatible monitor modules: 3300\/25, 3300\/45, 3300\/48, or 3300\/20.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Install the 81544-01 terminal board in the designated location within the 3300\/3500 rack or external enclosure. Secure with appropriate hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Wiring:\u003c\/strong\u003e Connect field transducer cables to the input terminals. Follow the wiring diagram in the official Bently Nevada installation manual for proper polarity and shield connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecord Output Wiring:\u003c\/strong\u003e Connect recording equipment to the dedicated record output terminals. Ensure recording devices present appropriate input impedance to avoid signal loading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding:\u003c\/strong\u003e Ground cable shields at the terminal board per the system grounding plan. Typically, shields are grounded at the monitoring system end only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCE Installation:\u003c\/strong\u003e For CE-compliant installations, use the specified interconnect cables (0.963 mm² \/ 18 AWG or 0.382 mm² \/ 22 AWG shielded twisted pair) as referenced in the Bently Nevada CE installation documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerification:\u003c\/strong\u003e After wiring, verify signal continuity and measure input signals at the monitor module to confirm proper transducer operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 81544-01 and 81544-02?\u003c\/strong\u003e\u003cbr\u003eA: The 81544-01 and 81544-02 are variants of the same Xducer I\/O terminal board. The suffix difference may indicate connector type, approval option, or minor configuration variation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What monitor modules is the 81544-01 compatible with?\u003c\/strong\u003e\u003cbr\u003eA: The 81544-01 is compatible with 3300\/25 (Dual Accelerometer), 3300\/45 (Dual Differential Expansion), 3300\/48 (Dual Thrust), and 3300\/20 (Dual Thrust) monitor modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the 81544-01 with the 3500 system?\u003c\/strong\u003e\u003cbr\u003eA: The 81544-01 is primarily designed for the 3300 series. For 3500 systems, Bently Nevada offers updated I\/O modules with improved connectivity. Verify compatibility with your specific 3500 rack configuration before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What wire gauge should I use for connections?\u003c\/strong\u003e\u003cbr\u003eA: For CE-compliant installations, Bently Nevada specifies 0.963 mm² (18 AWG) or 0.382 mm² (22 AWG) shielded twisted-pair cables. For non-CE installations, follow local electrical codes and the Bently Nevada installation manual.\u003c\/p\u003e\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify your monitor module model number (3300\/25, 3300\/45, 3300\/48, or 3300\/20) before ordering the 81544-01 to ensure compatibility.\u003c\/li\u003e\n\u003cli\u003eWhen replacing a failed terminal board, match the exact part number (81544-01) to ensure identical terminal layout and electrical characteristics.\u003c\/li\u003e\n\u003cli\u003eFor new installations, consider the 3500 series with modern I\/O modules for improved diagnostics and Ethernet connectivity.\u003c\/li\u003e\n\u003cli\u003eEnsure adequate cable gland or conduit entry provisions in your enclosure for the number of transducer cables.\u003c\/li\u003e\n\u003cli\u003eDocument all terminal assignments during installation to simplify future maintenance and troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":53797704958136,"sku":"81544-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/81544-01r270.png?v=1782726963","url":"https:\/\/www.globalpetroparts.com\/products\/bently-nevada-81544-01-i-o-module-signal-record-terminal","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}