Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613666033393 | ||
| +8613666033393 | |||
| 13666033393 | |||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China |
Technical Specifications:
| Parameter | Specification |
|---|---|
| Dimensions (L x W x H) | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Power Supply | +12 to +35 Vdc |
| Output Signal | 4 to 20 mA, over specified full-scale range in 2-wire configuration |
| Accuracy | ±1.5% over specified full-scale range |
| Probe Gap | 0.5 mm to 1.75 mm (20 to 55 mils) |
| Maximum Loop Resistance | 1,000 Ω at 35 Vdc |
| Operating Temperature | -35°C to +85°C (-31°F to +185°F) |
| Storage Temperature | -52°C to +100°C (-62°F to +212°F) |
| Frequency Response | 5 Hz to 6,000 Hz +0, -3 dB |
| Environmental Conditions | 100% condensing humidity (non-submerged) |
FAQ
FAQ:
Q1: What is the primary use of the Bently Nevada 990 Vibration Transmitter?
A1: The 990 Vibration Transmitter is mainly used for OEMs of centrifugal air compressors, small pumps, motors, or fans. It provides a 4 to 20 mA proportional vibration signal for machinery control systems.
Q2: How does the Bently Nevada 990 work?
A2: The transmitter accepts input from a 3300 NSv proximity probe, processes the vibration signal, and outputs it as a 4 to 20 mA proportional signal for monitoring and control systems.
Q3: What is the maximum loop resistance for the 990 Vibration Transmitter?
A3: The maximum loop resistance is 1,000 Ω, including the cable, at 35 Vdc.
Q4: What temperature range can the 990 Vibration Transmitter operate in?
A4: The operating temperature range is from -35°C to +85°C (-31°F to +185°F).
Q5: Can the 990 Vibration Transmitter be used in hazardous environments?
A5: Yes, it complies with various certifications, including ATEX Zone 2 and Class I, Div 2 for hazardous locations.
Q6: What is the typical signal output of the 990 Vibration Transmitter?
A6: It outputs a 4 to 20 mA signal over the specified full-scale range for use in machinery control systems.
Q7: What is the probe gap required for accurate operation?
A7: The probe gap must be between 0.5 mm and 1.75 mm (20 to 55 mils) from the target to ensure full-scale range accuracy.
Q8: How does the 990 handle faulty probes?
A8: The “Not OK/Signal Defeat” circuit ensures that the signal output goes to less than 3.6 mA within 100 µs after a fault occurs, preventing false alarms.
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Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
