QAT and Mini Q Energy Accelerometers
Overview
Honeywell produces the QAT (160C and 185C versions) and the Mini Q (150C, 185C and 200C) high-temperature Energy Accelerometers for down hole measurement-while-drilling and wireline applications. High temperature accelerometers are designed to survive in extreme heat or cold environments and require precise acceleration information like drilling. These accelerometers and pressure sensors provide critical data that prevents failures and reduces downtime.
Honeywell’s Q-Flex design is ruggedized for high temperature and specifically customized for the demands of oil and gas applications. QAT and Mini Q products feature a patented Q-Flex etched-quartz-flexure seismic system and its amorphous quartz proof-mass structure provides excellent bias, scale factor and axis alignment stability.
The integral Q-Flex electronics develop an acceleration-proportional output current providing both static and dynamic acceleration measurements. By use of a customer-supplied output load resistor, appropriately scaled for the acceleration range of the application, the output current can be converted into a voltage.
Honeywell’s Q-Flex design is ruggedized for high temperature and specifically customized for the demands of oil and gas applications. QAT and Mini Q products feature a patented Q-Flex etched-quartz-flexure seismic system and its amorphous quartz proof-mass structure provides excellent bias, scale factor and axis alignment stability.
The integral Q-Flex electronics develop an acceleration-proportional output current providing both static and dynamic acceleration measurements. By use of a customer-supplied output load resistor, appropriately scaled for the acceleration range of the application, the output current can be converted into a voltage.
Specifications
Axis Misalignment
- <3 mrad (QAT)
- <6.5 mrad (Mini Q)
Axis Misalignment - One-year Composite Repeatability
- <400 µrad (QAT)
Weight
- 25 grams (Mini Q)
- 55 grams (QAT)
Size
- 0.79in Diameter (2 cm) x 0.57in High (1.4 cm) millimetre
- 1.0in Diameter (2.5 cm) x 0.73in High (1.9 cm) millimetre
Vibration Rectification
- < ± 100 µg/ g^2 (QAT)
Vibration Peak Sine
- 30g peak, 50 to 800Hz (QAT)
Shock
- 1000 g (Mini Q) (Operating)
- 1000 g (QAT) (Operating)
- 2000 g (Mini Q) [Survival (-40 to 70°)]
- 2000 g (QAT) [Survival (-40 to 70°)]
Scale Factor
- 1.3 mA/g (Mini Q)
- 2.75 mA/g ± 1.8% (QAT)
Resolution/Threshold
- <1 µg (Mini Q)
- <5 µg (QAT)
Models
- MiniQ 150
- MiniQ 185
- QAT 160
- QAT 185
Key Benefits
- Low-power electronics
- Temperature-compensating algorithms dramatically improve bias, scale factor, and axis misalignment performance
Bias - Residual Modeling Error
- <450 μg (QAT)
- <600 μg (Mini Q)
Bias
- <15 mg (Mini Q)
- <20 mg (QAT)
Bandwidth
- <200 Hz (QAT)
Vibration (Random)
- 20 grms (QAT)
- 30 grms (Mini Q)
Scale Factor - Residual Modeling Error
- <400 ppm (Mini Q)
- <450 ppm (QAT)
RSS Bias and Scale Factor - One-Year Repeatability
- 1.5mg (QAT 185)
- 1.8mg (MiniQ 150)
- 1.8mg (MiniQ 185)
- 1.8mg (MiniQ 200)
- 1mg (QAT 160)
Output
- Analog
Survival Temperatures
- -40°C to 175°C (QAT 160)
- -40°C to 200°C (QAT 185)
- -40°C to 215°C (MiniQ 150)
- -40°C to 215°C (MiniQ 185)
- -40°C to 215°C (MiniQ 200)
Operating Temperature
- 0 to 150°C (MiniQ 150)
- 0 to 160°C (QAT 160)
- 0 to 185°C (MiniQ 185)
- 0 to 200°C (MiniQ 200)
- 0°C to 185°C (QAT 185)
Quiescent Power
- 180m Watts (QAT)
Quiescent Current per Supply
- 6 mA (QAT)
Input Voltage
- ± 12 to ± 18 VDC (Mini Q) voltage alternating current
- ± 12.5 to ± 15.5 VDC (QAT) voltage alternating current
Input Range
- ±20 g (Mini Q)
- ±20 g (QAT)
Product Number
Parts
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