Great System International Limited
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Product Details:
Payment & Shipping Terms:
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| Manufacturer: | Bently Nevada | Part Number: | 990-05-70-02-00 |
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| Model Type: | Vibration Transmitter | Country Of Origin: | U.S.A. |
| Full-scale Option: | 05 = 0-5 Mils Pp (0-125 µm Pp) | System Length Option: | 50 = 5.0 Metres (16.4 Feet) |
| Operating Temperature: | -35 C To +85 C (-31 F To +185 F) | Shipping Weight: | 1.5 Kg |
| High Light: | 20mA Bently Nevada Vibration Transmitter,OEM Bently Nevada Vibration Transmitter,Bently Nevada 990 Vibration Transmitter |
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Estimated Lead Time : 12 - 16 weeks.
Manufacturer : Bently Nevada
Product No. : 990-05-50-02-00
Product type : 990 Vibration Transmitter
Country of Origin: U.S.A
Can add on Certificate Of Origin (COO)
Full-scale Option : 05 = 0-5 mils pp (0-125 µm pp)
System Length Option : 50 = 5.0 metres (16.4 feet)
Mounting Option : 02 = Bulkhead screws
Agency Approval Option : 00 = Not required
Input : Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable.
Power : Requires +12 to +35 Vdc input at the transmitter terminal.
Operating Temperature : -35 C to +85 C (-31 F to +185 F)
Storage Temperature : -51 C to +100 C (-60 F to +212 F)
Shipping weight : 1.5 Kg
The 990 Vibration Transmitter is intended primarily for the original equipment manufacturers (OEMs) of centrifugal air compressors or small pumps, motors, or fans who prefer to provide a simple 4 to 20 mA proportional vibration signal as the input to their machinery control system. The transmitter is a 2-wire, looppowered device that accepts input from our 3300 NSv* proximity probe and its matching extension cable (available in 5 m and 7 m system length options).
| Input | Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable |
| Power | Requires +12 to +35 Vdc input at the transmitter terminal. |
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4 to 20 mA Signal Output |
4 to 20 mAdc over specified full-scale range in 2-wire configuration. |
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4 to 20 mA Loop Accuracy |
Within ±1.5% over specified full-scale range. Accuracy is rated from the TEST signal input to the voltage measured across a 250 loop resistance. |
| Probe Gap | Probe must be gapped between 0.5 and 1.75 mm (20 and 55 mils) from target to ensure full scale range. |
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Maximum Loop Resistance |
1,000 including cable at 35 Vdc. |
| Current Limiting | 23 mA typical. |
| Zero and Span | Non-interacting external adjustments. |
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NOT OK/Signal Defeat |
Signal output will go to less than 3.6 mA within 100 µs after a Not OK condition occurs. Signal output is restored within 2-3 seconds after the Not OK condition is removed. |
| Power-up Inhibit | Signal output stays at less than 3.6 mA (NOT O.K.) for 2 to 3 seconds after power is applied. The purpose is to signal that the device is not yet ready. Transients may be observed when device goes O.K. |
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Proximitor Sensor Output |
Compatible with ungrounded, portable test equipment. When using grounded, ac-powered test equipment, use the 122115-01 Test Adapter for signal isolation. |
| Output Impedance | Prox Out has a 10 kW output impedance calibrated for a 10 M load. |
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Prox Out Linear Range |
1.4 mm (55 mils). Begins at approximately 0.25 mm (10 mils) from target surface. |
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Prox Out Incremental Scale Factor |
7.87 mV/µm (200 mV/mil) ± 6.5% typical including interchangeability errors when measured in increments of 0.25 mm (10 mils) over the linear range using a flat 30 mm (1.2 inch) target. Worst case 7.87 mV/µm ± 10%. Typical Noise Level: 50 mV/pp. |
| Temperature Stability | Incremental scale factor remains within ±10% of 7.87 mV/µm (200 mV/mil) from 0 C to +70 C (+32 F to +158 F). |
Integrated Proximitor Sensor Requires no External Unit
Non-Isolated PROX OUT and COM Terminals Plus a Coaxial Connector
Non-Interacting Zero and Span Potentiometers
Test Input Pin for Quick Verification of Loop Signal Output
Not OK/Signal Defeat Circuit Prevents High Outputs or False Alarms
Potted Construction for High Humidity Environments (Up to 100% Condensing)
Contact Person: Mrs. Joanna Yang
Tel: +86-13828861501
Fax: 86-755-26850713
