Geophones
At present the company produces various kinds of geophones at about one million per year. Only trained and certified specialists are permitted to manufacture of the products. In accordance with the production engineering the parts pass through different operating steps and control.
All products are under acceptance tests (100% control).
Periodic testing is carrying out according to the approved plan including a list of necessary work and time of tests fulfillment.
Geophones HT-5, HT-S1
High sensitivity with high noise immunity.
| Parameter | Value | |
| HT-5 | HT-S1 | |
| Natural Frequency (Hz) | 5±5% | 10±3.5% |
| Open Circuit Damping | 0.70±5% | 0.5±3.5% |
| Damping With Calibration - Shunt 30 kOm | 0.70±3.5% | |
| Open Circuit Sensitivity (v/m/s) | 98.0±5% | 145.0±3.5% |
| Sensitivity With Calibration - Shunt 30 kOm (v/m/s) | 135.0±3.5% | |
| Coil Resistance (Ω) | 1800±5% | 1660±3.5% |
| Harmonic Distortion (%) | ≤0.1 | ≤0.1 |
| Typical Spurious Frequency (Hz) | ≥250 | ≥250 |
| Moving Mass (g) | 15.8 | 34 |
| Allowable Tilt (°) | 10° | 20° |
| Typical Case To Coil Motion (mm) | 2 | 1.5 |
| Unit Diameter (mm) | 27.3 | 33 |
| Unit Height (mm) | 33.5 | 33.5 |
| Unit Mass (g) | 105 | 210 |
| Operating Temperature (℃) | -40℃...+80℃ | -40℃...+80℃ |
| Limited Warranty Period (Year) | 1 | 3 |
Geophones НТ-G1.
High sensitivity with high noise immunity.
Tolerance ± 3.5%.
| Parameter | Value | |
| Type A | Type B | |
| Natural Frequency (Hz) | 10±3.5% | 10±3.5% |
| Open Circuit Damping | 0.48±3.5% | 0.54±3.5% |
| Damping With Calibration - Shunt 1 kOm | 0.70±3.5% | |
| Open Circuit Sensitivity (v/m/s) | 90.5+5%-3.5% | 90.5+5%-3.5% |
| Sensitivity With Calibration - Shunt 1 kOm (v/m/s) | 83.2+5%-3.5% | |
| Coil Resistance (Ω) | 1800±3.5% | 1800±3.5% |
| Harmonic Distortion (%) | ≤0.1 | ≤0.1 |
| Typical Spurious Frequency (Hz) | ≥250 | ≥250 |
| Moving Mass (g) | 11.8 | 11.8 |
| Allowable Tilt (°) | 10° | 10° |
| Typical Case To Coil Motion (mm) | 1.5 | 1.5 |
| Unit Diameter (mm) | 27 | 27 |
| Unit Height (mm) | 33.5 | 33.5 |
| Unit Mass (g) | 103 | 103 |
| Operating Temperature (℃) | -40℃...+80℃ | -40℃...+80℃ |
| Limited Warranty Period (Year) | 3 | 3 |
Geophones HT-20DX
For seismic data acquisition with high resolution.
Natural frequency 4, 5, 8, 10, 14, 28, 35, 40, 60 Hz.
Tolerance ±5%.
| Parameter | Value | |
| HT-4 | HT-10 | |
| Natural Frequency (Hz) | 4±0.5 | 10±5% |
| Open Circuit Damping | 0.68±5% | 0.3±5% |
| Damping With Calibration - Shunt 1 kOm | 0.707±5% | |
| Open Circuit Sensitivity (v/m/s) | 30.3±5% | 28.0±5% |
| Sensitivity With Calibration - Shunt 1 kOm (v/m/s) | 20.1±5% | |
| Coil Resistance (Ω) | 375±5% | 395±5% |
| Harmonic Distortion (%) | ≤0.2 | ≤0.2 |
| Typical Spurious Frequency (Hz) | ≥250 | ≥250 |
| Moving Mass (g) | 11 | 11 |
| Allowable Tilt (°) | 10° | 20° |
| Typical Case To Coil Motion (mm) | 2 | 1.5 |
| Unit Diameter (mm) | 25.4 | 25.4 |
| Unit Height (mm) | 33.5 | 33.5 |
| Unit Mass (g) | 87 | 87 |
| Operating Temperature (℃) | -40℃...+80℃ | -40℃...+80℃ |
| Limited Warranty Period (Year) | 1 | 3 |
Geophone НТ-24, НТ-32.
High accuracy, low distortion, and high stability.
Tolerance ± 2.5%.
Distortion ≤ 0.1% increases the dynamic range of the geophones.
In geophones we use a leaf spring at a horizontal frequency of 250 Hz it provides high noise immunity.
Successful design of magnetic circuit and technology production of magnetic leaf spring make it possible to use geophones at an inclination of the vertical to 15°, which provides convenience and reliability of signal reception.
| Parameter | Value |
| Natural Frequency (Hz) | 10±2.5% |
| Open Circuit Damping | 0.25+5%-0% |
| Damping With Calibration - Shunt 1 kOm | 0.69+5%-0% |
| Open Circuit Sensitivity (v/m/s) | 28.8±2.5% |
| Sensitivity With Calibration - Shunt 1 kOm (v/m/s) | 20.95±2.5% |
| Coil Resistance (Ω) | 375±2.5% |
| Harmonic Distortion (%) | ≤0.1 |
| Typical Spurious Frequency (Hz) | ≥250 |
| Moving Mass (g) | 11 |
| Allowable Tilt (°) | 10° |
| Typical Case To Coil Motion (mm) | 2 |
| Unit Diameter (mm) | 25.4 |
| Unit Height (mm) | 33.5 |
| Unit Mass (g) | 87 |
| Operating Temperature (℃) | -40℃...+80℃ |
| Limited Warranty Period (Year) | 3 |
| Parameter | Value |
| Natural Frequency (Hz) | 10±2.5% |
| Open Circuit Damping | 0.3±2.5% |
| Damping With Calibration - Shunt 1 kOm | 0.707±2.5% |
| Open Circuit Sensitivity (v/m/s) | 28±2.5% |
| Sensitivity With Calibration - Shunt 1 kOm (v/m/s) | 20.1±2.5% |
| Coil Resistance (Ω) | 395±2.5% |
| Harmonic Distortion (%) | ≤0.1 |
| Typical Spurious Frequency (Hz) | ≥250 |
| Moving Mass (g) | 11 |
| Allowable Tilt (°) | 10° |
| Typical Case To Coil Motion (mm) | 1.5 |
| Unit Diameter (mm) | 25.4 |
| Unit Height (mm) | 34.5 |
| Unit Mass (g) | 90 |
| Operating Temperature (℃) | -40℃...+80℃ |
| Limited Warranty Period (Year) | 3 |
| Parameter | Value |
| Natural Frequency (Hz) | 10±2.5% |
| Open Circuit Damping | 0.316±2.5% |
| Damping With Calibration - Shunt 1 kOm | 0.70±2.5% |
| Open Circuit Sensitivity (v/m/s) | 27.5±2.5% |
| Sensitivity With Calibration - Shunt 1 kOm (v/m/s) | 19.7±2.5% |
| Coil Resistance (Ω) | 395±2.5% |
| Harmonic Distortion (%) | ≤0.1 |
| Typical Spurious Frequency (Hz) | ≥250 |
| Moving Mass (g) | 11 |
| Allowable Tilt (°) | 10° |
| Typical Case To Coil Motion (mm) | 1.5 |
| Unit Diameter (mm) | 25.4 |
| Unit Height (mm) | 33.5 |
| Unit Mass (g) | 87 |
| Operating Temperature (℃) | -40℃...+80℃ |
| Limited Warranty Period (Year) | 3 |
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