The Bently Nevada 177230-01-02-05 seismic transmitter measures vibration velocity in rotating machinery. You can use it with PLCs, DCS, or SCADA systems that have current-limited internal power supplies. This device converts peak vibration levels into a standard 4-20 mA signal. Consequently, it simplifies integration into existing monitoring loops.
The 177230-01-02-05 offers a measurement range of 0 to 25.4 mm/s (0 to 1.0 in/s). Its frequency response spans 3 Hz to 1 kHz (±10%), which equals 180 to 60,000 cpm. The main loop sensitivity shows 4 ±0.3 mA at 0.0 mm/s and 20 ±2 mA at full scale. Settling time stays under 15 seconds within 2% of final value. Additionally, the mounted resonant frequency exceeds 12 kHz. Transverse sensitivity is less than 5% of sensitivity.
For electrical requirements, this sensor needs an excitation voltage of 12 to 30 Vdc, current limited to 40 mA. Typically, host systems limit current between 30 mA and 35 mA. The sensing element uses a ceramic/shear design. Electrical isolation is greater than 10⁸ ohms, and breakdown voltage reaches 600 Vrms with less than 1 mA leakage.
The case material is 316L stainless steel, which resists corrosion. Diameter measures 25.4 mm (1.00 in), and height is 66.0 mm (2.60 in). Weight is 0.131 kg (4.62 oz). The connector is a 3-pin MIL-C-5015, also made of 316L stainless steel.
Mounting options include a ¼-28 UNF hole in the body. Other available threads are M6 X 1 SI and M8 x 1.25 SI. You should apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf). Operating temperature ranges from -40°C to +85°C (-40°F to +185°F). The transmitter handles relative humidity up to 100% non-submerged. Shock survivability is 9.810 m/s² (1.000 g peak) for a drop test. Magnetic field sensitivity stays below 20 μm/s/gauss peak.
This product is hermetically sealed, so it resists moisture and contamination. Its high resonant frequency avoids mechanical interference. Moreover, the low transverse sensitivity reduces measurement errors. The multiple approvals (CSA/NRTL/C, ATEX/IECEx) make it suitable for hazardous areas.
Compared to other sensors, the 177230-01-02-05 offers simple two-wire loop power. You do not need separate signal conditioners. As a result, installation costs stay lower. Many engineers prefer this model for turbines, compressors, fans, and pumps.
1. Can I use the 177230-01-02-05 with a 24V PLC input card?
Yes, you can. Most PLC analog input cards accept 4-20 mA signals. Ensure the card provides a current loop supply in the 30-35 mA range.
2. What happens if I exceed the 30 Vdc excitation voltage?
Exceeding 30 Vdc may damage the internal circuitry. You should always stay within the 12 to 30 Vdc range.
3. Is the dynamic signal on Pin C isolated from the loop?
No, the dynamic signal references Pin B (loop return). Do not ground Pin B at more than one point.
4. How do I know if my Bently Nevada 177230-01-02-05 is working correctly?
Measure current between Pin A and Pin B. At rest, you should see 4 ±0.3 mA. Tap the sensor gently; the current should rise briefly.
5. Can this transmitter be submerged?
No. It handles 100% relative humidity but only in non-submerged conditions. Do not immerse it in liquid.
| Brand Name | Bently Nevada |
| Model No. | 177230-01-02-05 |
| Product Type | Seismic Transmitter |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
