Thiết Bị Đo Độ Rung St5484E
Liên hệ
Kdc D3 Miếu Nổi, P.3, Q.bình Thạnh, Tp.hcm
ST5484E Seismic Velocity 4-20 mA Transmitter
Overview
The ST5484E is a self-contained seismic velocity transmitter that incorporates a piezoelectric accelerometer, signal integrator, RMS peak detector, and a 4-20 mA signal conditioner into a single package. It can be mounted directly on a machine case or bearing housing without intervening signal conditioning equipment. The amplitude of the integrated acceleration (velocity) signal is converted to a proportional 4-20 mA signal compatible with industrial process control instrumentation such as PLCs, DCSs, and SCADA systems that can provide trending and/or alarming capabilities for a simplified vibration monitoring strategy. When the flying lead or terminal block connector options are chosen, the transmitter does not need a separate environmental housing and can directly accept conduit. To reduce installed cost, it can be used with barriers for intrinsically safe installations, or wired directly to explosion-proof conduit fittings for explosionproof installations.
| Inputs | |
| Supply Voltage (see also note under max loop resistance) | 11 – 29.6 VDC (24 VDC nominal) (intrinsically safe); 11 – 30 VDC (24 VDC nominal) (explosion proof and non-incendive); Metrix patented IPT® independent polarity diode bridge circuit allows voltage to be connected without regard to polarity |
| Circuit-to-Case Isolation | 500 Vrms |
| Outputs | |
| 4-20 mA | Proportional to velocity full scale range (4mA = 0 vibration, 20mA = full scale vibration) |
| Maximum 4- 20 mA loop resistance | RL = 50 x (Vs – 11) W where Vs = Supply Voltage at transmitter terminals. NOTE: For every 50 W of resistance in the 4-20 mA loop, 1 VDC above the minimum supply voltage (11 VDC) must be available at the transmitter terminals. For example, 12 VDC at the transmitter terminals will allow a 50 Ω loop resistance; 30 VDC at the transmitter terminals will allow a 950 Ω loop resistance. For intrinsically safe applications, the use of a passive zener barrier will incur a voltage drop of approximately 8.1 volts at the barrier, and the loop supply voltage is limited to 26 VDC. Thus, with passive barriers and a 26 VDC supply, the maximum available voltage at the transmitter will be 17.9 VDC and the corresponding maximum loop resistance will be 345 Ω. |
| Dynamic Signal | 100 mV/g (10.2 mV / m/s2 ) acceleration, filtered to same frequency band as proportional velocity (see ordering options E & F) |
| Dynamic Signal Output Impedance | 10 kΩ NOTES: 1. The dynamic signal output is short-circuit protected by means of a 10 kΩ resistor, resulting in a relatively large output impedance. Many data collectors and analyzers have relatively low input impedances (100 kΩ or less) which will load this dynamic output and attenuate the signal by 10% or more. Refer to Table 1 for the dB and percentage attenuation for various load impedances. 2. Because the ST5484E is a loop-powered device with low operating power, the dynamic signal output requires a buffer amplifier for cable runs in excess of 16 feet (5 meters). Longer cable runs will also introduce distributed cable capacitance that acts as a low-pass filter, attenuating high- frequency signal content. In such situations, consult the factory for assistance selecting an appropriate low-capacitance cable |
| Recommended Minimum Load Impedance (Zload) for Dynamic Signal Connection | 500 kΩ (see also note 1 above) |
| Signal Processing | |
| Frequency Response (+/- 3dB passband) | 2 Hz – 1500 Hz (standard) 2 Hz – 2000 Hz (optional) |
| Optional HighPass Filter Corner | 5, 10, 20, 50, 100, or 200 Hz (must be specified at time of ordering) |
| High-Pass RollOf | 12 dB / octave |
| Optional LowPass Filter Corner | 230, 250, 350, 450, 500, or 1000 Hz (must be specified at time of ordering) |
| Low-pass Roll-Off | 12 dB / octave |
| Accuracy | ± 2.5% (within passband) ± 4% (at corner frequencies) |
| Maximum Full Scale | 5.0 in / sec (others by request) |
| Minimum Full Scale | 0.5 in / sec (others by request) |
| Full Scale Range Units | • in / sec (standard) • mm / sec (available by request) |
| Amplitude Detection | True RMS detector; full scale may be ordered with True RMS units or scaled RMS (RMS x √2) for “derived peak” measurements See ordering option AAA. |
| Physical | |
| Operating Temperature | -40°C to +100°C (-40°F to +212°F) |
| Weight | 0.9 lbs (0.36 kg) |
| Dimensions | Refer to Figures 1 and 2 on page 8 |
| Sensitive Axis | Same as mounting stud axis |
| Axis Orientation | Any |
| Enclosure Material | • 303 stainless steel (standard) • 316 stainless steel (optional) |
| Enclosure Rating | MIL-Style Connector (option D=4): • IP67 and NEMA 4X Flying Leads and Terminal Block Connectors (option D≠4): • IP66 when used with the following conduit elbows: 8200-001-IEC, 8200-003-IEC, 8200-008- IEC, • No Rating* when used with the following conduit elbows: 8200-001, 8200-003, 8200-005, 8200-008, 8200-101, 8200-103, 8200-108 * NOTE: IP and NEMA ratings pending; |
| Connector Types | • Flying Leads (2- and 4-wire) • MIL-C-5015 (2-wire only) • Terminal Block (2- and 4-wire) |
| Humidity | 95%, non-condensing (flying lead and terminal block versions) • 100% condensing (MIL-style connector |
| Approvals | |
| CE Mark | Yes |
| Hazardous Areas | CSA • ATEX • IECEx • INMETRO • KOSHA • Custom Union EAC |
Liên hệ: Nguyễn Chí Hải
Sdt: 0398991575
Gmail: hai@ansgroup.asia
HẾT HẠN
| Mã số : | 15958647 |
| Địa điểm : | Toàn quốc |
| Hình thức : | Cần bán |
| Tình trạng : | Hàng mới |
| Hết hạn : | 24/05/2020 |
| Loại tin : | Thường |
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