1″ MDM 175T XE
1" MDM 175T XE
The MicroTesla 1” MDM is now offered in an XE Chassis. This revision provides superior instrument accuracy and the full MDM functionality in a near 1” OD. The 1” MDM is built with quartz accelerometers.
The added strength provided by the improved chassis design and the one piece sleeve cover, makes this instrument suitable in small diameter MWD applications like coiled tubing drilling.
Physical
- Length: Min 17.9”
- Diameter: 1.039”
- Proprietary MFE fluxgate magnetometer
- Quartz accelerometers accelerometers
- All boards are fully covered
Electrical
- Surfacemount electronics with Ulti-Pak board mounting pad
- Voltage requirement: 12V to 40V
- Power Usage: 1.5W peak, 0.7W idle
- Digital interfaces: TTL logic level
- Dedicated microprocessor and power supply built in
- Calibration coefficients downloaded directly into memory module
- Sensor power management through firmware
Enviornmental
- All boards qualified for high-temp applications, 175°C
- Quartz accelerometers, 175°C or 150°C
- Magnetometers, 200°C
- All boards mounted to the chassis and encapsulated for shock and vibration isolation
- The boards and magnetometers are qualified at 175°C
Mechanical and Environmental Specifications
| Parameter | Minimum | Maximum | Units |
|---|---|---|---|
| Outside Diameter* | 1.039 2.6 | inches cm |
|
| Length* | 17.9 | 23.5 60 | inches cm |
| Operating Temperature | 0 + 32 | 175 347 | °C °F |
| Survival Temperature | – 40 – 40 | 190 374 | °C °F |
| Vibration, Random | 20 | g RMS, 25-500 Hz | |
| Shock | 1000 | ½ msec and ½ sine |
Instrument Accuracy Specifications
| Parameter | Minimum | Units |
|---|---|---|
| Inclination accuracy, absolute* | ± 0.10 | degrees |
| Inclination spread on axial rotation at 90° Inc | < 0.10 | degrees |
| Azimuth accuracy, absolute, 90° Inc | ± 0.5 | degrees |
| Azimuth spread axial rotation, 10° through 90° | < 0.8 | degrees |
| Total face accuracy, axial rotation at 90° Inc | ± 1.0 | degrees |
| Total g field accuracy | ± 2.0 | mG |
| Total H field accuracy, absolute | ± 200 | nT |
| Magnetic dip accuracy | ± 0.30 | degrees |
| RPM Measurement, 2–200 RPM | ± 2.0 | % of value |
* Absolute accuracy is achieved when the instrument is tested in a controlled environment using a calibrated and certified reference position