DOM-35A Digital Orientation Module
The DOM-35A is a precision Digital Orientation Module, designed for direct compatibility with existing Tensor MWD systems and after-market replacement modules. The sensor is available in 150 and 175°Coptions and is designed to meet the most demanding and extreme conditions downhole. You can rely on Azimuth’s consistent high quality sensor performance when you need it most.
The sensor is based around high-grade quartz-hinge Accelerometers and an ultra-stable proprietary Magnetometer design, known as TruMag™ - the performance of which is unmatched in stability over temperature, shock and vibration. Coupled with high-temperature electronics and highly robust packaging, Azimuth delivers a premium Orientation Module, thoroughly tested and with industry leading performance – ready to improve your reliability in hole.
175°C Option
Precision Flux Gate Magnetometers
Tensor Compatible
- Features
- Benefits
- Applications
- Specifications
- Sensor Performance
- Electrical
- Mechanical
- Environmental
- Rugged chassis design
- Reliable 175°C operation
- Ultra-stable proprietary Magnetometers
- High-temperature surface mount electronics
- On-board Analog to Digital Converter
- On-board EEPROM K-Factor storage
- Low power consumption
- Independent Mag and Accel switching
- Increased MTBF
- Reliable operation in ‘hothole’ environment
- Experienced and dedicated support team
- Industry leading accuracy and stability
- Improved asset utilization and less ‘down-time’
- Drop-in Tensor replacement
- MWD/LWD Borehole Surveying
- OEM implementation in new MWD systems
A full set of Physical, Electrical and Environmental specifications are shown in the next sections. In summary:
- Dimensions 29.2” Length x 1.378” Dia.
- +/-13V (Nominal) Input voltage
- Connectors – 21-pin MDM (Plug) Top and 15-pin MDM (Socket) Bottom
- 10 Bypass wires
- 12-Bit Analog to Digital Converter on-board
- 175°C operation and 185°C Survival
- Tested in excess of 20grms Random vibration
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Inclination Accuracy | +/-0.1 | Deg. | |||
| Inclination Repeatability | +/-0.05 | Deg. | |||
| TF/Rotation at >5° Inc - Accuracy | +/-0.5 | Deg. | |||
| TF/Rotation at >5° Inc - Repeatability | +/-0.05 | Deg. | |||
| Azimuth at >5° Inc - Accuracy | +/-1.0 | Deg. | |||
| Azimuth at >5° Inc - Repeatability | +/-0.5 | Deg. | |||
| Dynamic Magnetic TF | +/-5.0 | Deg. |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Operating Voltage | +/-12.5 to +/- 15.5 | Volts | (+/-13V nominal) | ||
| Active Power Consumption | 0.95 | Watts | Maximum | ||
| Quiescent Power Consumption | 75 | mWatts | Mag/Accel Disabled | ||
| Interface | SPI | ADC | |||
| I²C | EEPROM (see note 2) | ||||
| TTL/CMOS | Mag/Accel Enable (see note 1) | ||||
| Accelerometer Scale | 2.0 | V/G | Nominal | ||
| Magnetometer Scale | 1.5 | V/Gauss | Nominal | ||
| ADC Resolution | 12 | Bit | |||
| EEPROM Capacity | 16 | Kbit |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Length | 29.2 (741.7) | Inches (mm) | |||
| Diameter³ | 1.378 (35.0) | Inches (mm) |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Operating Temperature | |||||
| DOM-35A-150 | -25 to 150 | °C | |||
| -13 to 302 | °F | ||||
| DOM-35A-175 | -25 to 175 | °C | |||
| -13 to 347 | °F | ||||
| Survival Temperature | |||||
| DOM-35A-150 | -40 to 165 | °C | |||
| -40 to 329 | °F | ||||
| DOM-35A-175 | -40 to 185 | °C | |||
| -40 to 365 | °F | ||||
| Vibration | 30 | g pk | 50 – 1000Hz | ||
| 20 | g rms | 50 – 1000Hz | |||
| Shock | 1000 | g | 0.5mS Half Sine |
Notes
- Independent Magnetometer/Accelerometer power switching
- K-Factor storage and download
- Excludes lateral shock absorbers
We provide a responsive repair, calibration and product support service. Our highly experienced and knowledgeable personnel are available to troubleshoot or repair equipment, and provide general product technical assistance.
If you need effective sensor support for your business contact
support@azimuthmwd.com for more information.