990-05-70-02-00 Bently Nevada Vibration Transmitter
990-05-70-02-00
990-05-70-02-00 is a Bently Nevada 990 two-wire, loop-powered vibration transmitter. The 990-05-70-02-00 order code specifies a 0-5 mil pp (0-125 um pp) peak-to-peak vibration range, 7.0 m transducer-system length, bulkhead screws, and Agency option not required. 990-05-70-02-00 converts the signal from one compatible external 3300 NSv proximity probe and matching extension cable into a proportional 4-20 mA output for a machinery control system. The probe and extension cable are not part of 990-05-70-02-00 unless the quotation explicitly includes them.
Scope note: 990-05-70-02-00 identifies loop-powered vibration transmitter. Complete-system performance is labeled separately and does not apply to 990-05-70-02-00 alone.
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+86 18150117685loop-powered vibration transmitter
990-05-70-02-00 contains the transmitter signal-conditioning electronics, but 990-05-70-02-00 requires an external compatible 3300 NSv probe and matching extension cable. Those external components are not automatically included.
990-05-70-02-00 loop accuracy is a transmitter-loop specification. The PROX OUT range and scale-factor rows are explicitly complete transducer-system data measured with the compatible external chain and AISI 4140 target.
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Product family | 990 Vibration Transmitter |
| Order code | 990-05-70-02-00 |
| Measured variable | Peak-to-peak vibration amplitude |
| Configured full scale | 0-5 mil pp (0-125 um pp) |
| Signal output | 4-20 mAdc, two-wire, proportional to the configured full scale |
| External transducer input | One external 3300 NSv proximity probe plus matching extension cable; external components are not automatically included |
| Configured system length | 7.0 m |
| Power at transmitter | +12 to +35 Vdc |
| Loop accuracy | Within +/-1.5% over full scale from TEST input to a 250-ohm loop; additional to Prox Out scale-factor error |
| Maximum loop resistance | 1,000 ohms including cable at 35 Vdc; Rloop(max) = 43.5 x (Vps - 12) ohms |
| Not OK behavior | Output below 3.6 mA within 100 us; restores 2-3 seconds after the fault clears |
| PROX OUT | Non-isolated; 10 kohm output impedance calibrated for a 10 Mohm load |
| Transducer-system Prox Out range | 1.4 mm (55 mil), beginning about 0.25 mm (10 mil) from an AISI 4140 target |
| Transducer-system scale factor | 7.87 mV/um (200 mV/mil), +/-6.5% typical and +/-10% worst case |
| Transducer-system frequency response | 5 Hz to 6,000 Hz, +0/-3 dB |
| Transmitter operating temperature | -35 to +85 deg C |
| Transmitter storage temperature | -52 to +100 deg C |
| Relative humidity | 100% condensing, non-submerged, with coaxial connectors protected |
| Transmitter weight | 0.43 kg (0.9 lbm) |
| Mounting | bulkhead screws |
| Agency option | Agency option not required |
| Official source | 141612 Rev. Y |
Compatibility statements are limited to the cited manufacturer documentation. Availability, condition and substitution must be confirmed separately.
990-05-70-02-00 is a Bently Nevada 990 two-wire, loop-powered vibration transmitter that produces a proportional 4-20 mA signal for a machinery control system.
990-05-70-02-00 is configured for 0-5 mil pp (0-125 um pp) peak-to-peak vibration according to the first option field in the official 990 order table.
990-05-70-02-00 requires one compatible external 3300 NSv proximity probe and a matching extension cable for the configured 7.0 m system length.
990-05-70-02-00 is the transmitter order code; the compatible 3300 NSv probe and extension cable are external components unless the quotation for 990-05-70-02-00 explicitly includes them.
990-05-70-02-00 requires +12 to +35 Vdc at the transmitter and 990-05-70-02-00 supplies a two-wire 4-20 mAdc output over the configured full-scale range.
990-05-70-02-00 drives the loop below 3.6 mA within 100 us after a Not OK condition and 990-05-70-02-00 restores the output about 2-3 seconds after the condition clears.
990-05-70-02-00 provides a non-isolated PROX OUT signal. Baker Hughes recommends the 122115-01 test adapter when grounded AC-powered test equipment is connected to 990-05-70-02-00.
990-05-70-02-00 provides peak-to-peak vibration trending and loop alarming, but 990-05-70-02-00 does not provide the complete diagnostic and protection functions of a continuous monitoring system.
Send the complete part number, installed-system details, quantity, destination and clear label photos. Availability and condition will be confirmed before quotation.
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