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28Hz Geophone with Soil Spike for P Wave and S Wave
Inclinometer — Natural Frequency 28Hz, Lead-in Cable 4.6mm to 7.8mm Optional. MOQ 1 piece, US$1.00 – 200.00/piece. QC & shipping by GoodsFromChina.
- Warranty
- 3 Year Limited Warranty
- Natural Frequency
- 28Hz
- Geophone Type
- P Wave or S Wave Optional
- Geophone Housing
- Reinforced Case for Land, Marsh or Snow
- Geophone Spike
- Snow Base, Desert Tripod or 75mm Soil Spike
- Geophone Connector
- Split Plate Clip, Mueller Clip, Kck, Kcl, Lck
At a glance
- Product
- 28Hz Geophone with Soil Spike for P Wave and S Wave
- Category
- Inclinometer
- Price
- US$1.00 – 200.00 / piece
- Minimum order
- 1 piece
- Origin
- China
- Customization
- Available
- Packaging
- Standard Export Carton
- HS code
- 9015800090
Last updated
Specifications
| Customization | Available |
|---|---|
| Natural Frequency | 28Hz |
| Geophone Type | P Wave or S Wave Optional |
| Model NO. | 20dx geophone |
| Geophone Housing | Reinforced Case for Land, Marsh or Snow |
| Geophone Spike | Snow Base, Desert Tripod or 75mm Soil Spike |
| Geophone Connector | Split Plate Clip, Mueller Clip, Kck, Kcl, Lck |
| Lead-in Cable | 4.6mm to 7.8mm Optional |
| Accuracy | <1mm |
| Vertical Lines | 1 |
| Horizontal Line | 1 |
| After-sales Service | Available |
| Warranty | 3 Year Limited Warranty |
| Transport Package | Standard Export Carton |
| Specification | 1x1 |
| Origin | China |
| HS Code | 9015800090 |
| Production Capacity | 50, 000sets/Year |
| Type | ST-20DX, 28hz (Equivalent to GS-20DX,28hz) |
|---|---|
| Natural frequency ( Hz ) | 28±5% |
| Coil Resistance (ohms) | 395±5% |
| Open circuit damping | 0.27±5% |
| Damping with Shunt Resistor | 0.552±5% |
| Calibration Shunt Resistor(ohms) | 1000 |
| Open Circuit Intrinsic Voltage Sensitivity(V/m/s) | 39.0±5% |
| Sensitivity with Shunt Resistor(V/m/s) | 28.0±5% |
| Harmonic Distortion ( % ) | ≤0.2 |
| Typical Spurious Frequency ( Hz ) | ≥350 |
| Moving Mass ( g ) | 11.0 |
| Max.coil excursion p-p (mm) | 1.5 |
| Max.tilt angle | 20º |
| Element Diameter (mm) | 25.4 |
| Element Height (mm) | 33.0 |
| Element Weight (g) | 100.0 |
| Operating Temperature(ºC) | --45ºC to + 100ºC |
| Warranty Period | 3 years |
| - All parameters specified herein are rated at a temperature 20ºC±2ºC. | |
| - 3-year limited warranty on basic element exclusive of high voltage, lightening or physical abuse. |
Product details
28Hz Geophone with Soil Spike for P Wave and S Wave is a inclinometer product manufactured in China and available to buyers worldwide through the GoodsFromChina sourcing service.
Key features
- Warranty: 3 Year Limited Warranty
- Natural Frequency: 28Hz
- Geophone Type: P Wave or S Wave Optional
- Geophone Housing: Reinforced Case for Land, Marsh or Snow
- Geophone Spike: Snow Base, Desert Tripod or 75mm Soil Spike
- Geophone Connector: Split Plate Clip, Mueller Clip, Kck, Kcl, Lck
- Lead-in Cable: 4.6mm to 7.8mm Optional
- Accuracy: <1mm
Ordering & packaging
Minimum order quantity is 1 piece. Standard export packaging: Standard Export Carton. HS code: 9015800090. Every order can include a pre-shipment quality inspection and consolidated shipping by sea, air or express, including DDP delivery.
How we source this product for you
- 1
Send your inquiry
Choose options, quantity and requirements. No payment needed.
- 2
Get a factory quote
We confirm price, MOQ and lead time — and compare alternatives.
- 3
Production & inspection
We follow up production and inspect goods before shipment.
- 4
Delivered to your door
Sea, air or express with customs clearance and DDP options.
Frequently asked questions
What is the minimum order quantity for 28Hz Geophone with Soil Spike for P Wave and S Wave?
The MOQ is 1 piece. Smaller trial orders can sometimes be negotiated — tell us your quantity in the inquiry.
How much does 28Hz Geophone with Soil Spike for P Wave and S Wave cost?
The listed factory price is US$1.00 – 200.00 per piece, depending on quantity. Your final quote includes our service fee and shipping options.
Can it be customized with my logo or specifications?
Yes. The manufacturer offers customization — logo printing, packaging, colors or modified specifications. Describe your requirements in the inquiry form.
How long does production and shipping take?
Typical production time is 15–45 days depending on quantity. Shipping to the US takes about 5–8 days by express, 8–12 days by air and 25–40 days by sea, with DDP door-to-door delivery available.
How do you check product quality?
We verify the manufacturer before ordering and can perform a pre-shipment inspection (AQL sampling) with a photo report before you pay the balance.















