Manufacturer: Bently Nevada
Product No.: 991-06-70-02-01
Country of origin:United States
Product Type: Thrust Transmitter
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 430g
Dimensions: 25.4 mm width x 112 mm height x 99 mm depth
Shipping port: Xiamen
Warranty: 12 months
The Bently Nevada 991-06-70-02-01 is a 2-wire, loop-powered Thrust Transmitter designed to process signals from a proximity probe system to measure axial shaft position or thrust displacement on rotating machinery. This device conditions the raw signal into a standard 4 to 20 mA analog output proportional to the total target movement. It is engineered to interface directly with control systems like PLC or DCS architectures without requiring a separate monitor rack, providing a cost-effective setup for critical machinery protection. The unit is optimized for integration with compatible proximity transducers to ensure accurate, high-speed axial displacement monitoring in industrial environments.
| Parameter | Specification |
| Manufacturer | Bently Nevada |
| Country of Origin | United States |
| Product Type | Thrust Transmitter |
| Output Signal | 4 to 20 mA DC |
| Power Requirements | 17 to 30 VDC |
| Scale Factor | 4 mA/mm (or equivalent mil-based calibration) |
| Operating Temperature Range | -35 to +85 Celsius |
| Storage Temperature Range | -40 to +100 Celsius |
| Housing Material | Zinc-plated steel or specialized polymer |
| Mounting Type | 35 mm DIN rail mount |
| Estimated Weight | 0.43 kg |
| Dimensions | 25.4 mm width x 112 mm height x 99 mm depth |
| Connector Pin | Function |
| +4-20mA / +VTX | Positive Power / Loop Current Input |
| -4-20mA / -VTX | Negative Power / Loop Current Return |
| PROX | Proximity Probe Signal Input Terminal |
| COM | Common Reference Terminal |
| SHLD | Shield / Earth Ground Terminal |
| BNC Jack | Buffered Raw Voltage Output (10.2 mV/micrometer) |
What is the primary function of this transmitter?
It converts raw proximity probe signals into a proportional 4 to 20 mA current loop for tracking shaft axial displacement.
Does this device require a separate rack-based monitoring system?
No, it is intended to send data directly to a PLC or DCS, eliminating the need for dedicated rack monitors.
How do engineers collect raw dynamic vibration data from this unit?
A front-panel BNC jack provides local access to the unconditioned dynamic signal using standard portable data collectors.
What loop voltage is required to power the unit properly?
The transmitter operates efficiently within a standard loop supply voltage window of 17 to 30 VDC.
Can this unit be mounted directly on the machine housing?
It should be installed in a protected field junction box or control enclosure to minimize high-temperature exposure and excessive vibration.
What happens if the loop polarity is accidently reversed during wiring?
Internal reverse-polarity protection prevents component damage, though the unit will not output a current signal until corrected.
Is calibration required during initial installation?
The hardware comes factory calibrated to specific system lengths and probe types, requiring only gap verification during installation.
Can a 5-metre probe system be connected to a 7.0-metre transmitter option?
No, mismatching the electrical system length options will cause significant linearity errors and corrupt the accuracy of the output.
What is the significance of the multi-approval suffix option?
It certifies the transmitter for installation in specific hazardous areas under ATEX, IECEx, and CSA guidelines when installed with barriers.
How should electrical noise from variable frequency drives be handled?
Ensure all shields are intact, properly isolated from the machine ground, and tied exclusively to the proper instrument common rail.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Greyish White
|
| Country of origin |
United States
|
| Power source |
DC Power
|
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