GREAT SYSTEM INDUSTRY CO. LTD
| Net Weight | 2 kg |
| Supply Ability | 50pcs/month |
| Linear Range | 1.52 mm (60 mils) |
| Payment Terms | T/T |
| Probe Cable Lengths | 0.5, 1, 2, 5, or 9 meters |
| Delivery Time | On request |
| Probe Case Material | AISI 304 stainless steel |
| Packaging Details | Original packing |
| Power Supply | 24 VDC |
| Probe Tip Material | Alumina ceramic (Al2O3) |
| Model Number | 991-01-XX-01-CN/MOD: 284318-01 |
| Certification | Rohs |
| Brand Name | Bently |
| Place of Origin | USA |
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Product Specification
| Net Weight | 2 kg | Supply Ability | 50pcs/month |
| Linear Range | 1.52 mm (60 mils) | Payment Terms | T/T |
| Probe Cable Lengths | 0.5, 1, 2, 5, or 9 meters | Delivery Time | On request |
| Probe Case Material | AISI 304 stainless steel | Packaging Details | Original packing |
| Power Supply | 24 VDC | Probe Tip Material | Alumina ceramic (Al2O3) |
| Model Number | 991-01-XX-01-CN/MOD: 284318-01 | Certification | Rohs |
| Brand Name | Bently | Place of Origin | USA |
The 991 Thrust Transmitter is designed primarily for original equipment manufacturers (OEMs) of centrifugal air compressors, small pumps, motors, or fans who require a simple 4 to 20 mA proportional axial displacement (thrust) signal as input to their machinery control system.
This 2-wire, loop-powered device accepts input from our 3300 NSv proximity probe and matching extension cable (available in 5 m and 7 m system length options). The transmitter conditions the signal into appropriate engineering units proportional to the shaft's axial position and provides it as a 4 to 20 mA industry-standard signal for input to control systems where machinery protection alarming and logic occurs.
| Parameter | Specification |
|---|---|
| Input | Accepts one non-contacting 3300 NSv Proximity Probe and extension cable |
| Power | Requires +12 to +35 Vdc input at transmitter terminal |
| Signal Output | 4 to 20 mAdc over specified full-scale range in 2-wire configuration |
| Loop Accuracy | Within ±1.5% over specified full scale range (typical). Accuracy rated from TEST signal input to voltage measured across 250 Ω loop resistance |
| Maximum Loop Resistance | 1,000 Ω including cable at 35 Vdc |
| Current Limiting | 23 mA typical |
| Zero and Span | Non-interacting external adjustments |
| Not OK/Signal Defeat | Signal output goes to less than 3.6 mA within 100 µs after Not OK condition. Signal output restored within 0.1 seconds after Not OK condition removed |
| Proximitor Sensor Output | Compatible with ungrounded, portable test equipment. Use 122115-01 Test Adapter for signal isolation with grounded, ac-powered test equipment |
Probe adjustment and range are critical in thrust position measurements. Incorrect probe gap settings may prevent the transmitter from reaching full-scale in either normal or counter directions. For proper adjustment, follow instructions in the manual.
Thrust transmitters have limitations compared to continuous monitoring systems. While capable of alarming on thrust position and non-OK checking, monitor functions such as Timed OK channel defeat, Danger Bypass, and Trip Multiply cannot be used. PLCs attached to thrust transmitters are not suitable for plant-wide diagnostic systems.
The 991 Vibration Transmitter's PROX OUT coaxial connector provides a non-isolated dynamic transducer signal. While you can connect this signal directly to battery-powered or isolated test equipment, we strongly recommend using the 990/991 Test Adapter for signal isolation when using ac-powered test equipment to maintain machinery protection integrity.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Trading Company
Year Established:
1998
Total Annual:
7000000-10000000
Employee Number:
>30
Ecer Certification：
Verified Supplier
Great System Industry (GSI) is a premier provider of process control instrumentation and industrial automation sensors, headquartered in Hong Kong with operations since 1998. As an ISO-certified manufacturer, distributor, and trading company, GSI delivers high-precision measurement solutions—i... Great System Industry (GSI) is a premier provider of process control instrumentation and industrial automation sensors, headquartered in Hong Kong with operations since 1998. As an ISO-certified manufacturer, distributor, and trading company, GSI delivers high-precision measurement solutions—i...
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