Precision Accelerometers for Energy Exploration
High Temperature Accelerometers Based On Crystal Technology
Honeywell produces the QAT (160C and 185C versions) and the MiniQ
(150C, 185C and 200C) high temperature accelerometers for down hole
measurement-while-drilling and wireline applications. These
accelerometers utilize Crystal design,
the industry standard in Aerospace,ruggedized for high temperature
use.
As with the entire Q-Flex accelerometer family, the QAT and MiniQ
accelerometers feature a patented Q-Flex etched-quartz- flexure
seismic system. An 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.
Kacise’s energy accelerometers also include a current-output
internal temperature sensor. By applying temperature compensating
algorithms,
bias, scale factor, and axis misalignment performance are
dramatically improved.
Robust design and quality assurance provides superior reliability.
Honeywell Accelerometers Provide
■■ Industry leading accelerometer performance at a competitive
price
Honeywell Accelerometer Benefits
■■ Unparalleled domain knowledge
■■ Demonstrated reliability and robustness
Key Features:
■■ High temperature capability
■■ Environmentally rugged
■■ Analog output
■■ Square or round mounting flange options (QAT160/185 only)
■■ Field-adjustable range
■■ Internal temperature sensor for thermal compensation
■■ Low power electronics
■■ Built-in test
| Model/Property | Input range | Bias | Residual Modeling Error | Scale Factor | Residual Modeling Error | Axis misalignment | One year repeatability | Vibration Rectification (50-500 Hz) | Threshold and Resolution | Bandwidth | Sine Vibration | Random Vibration | Shock | Operating | Survival (-40 to 70°) | Input voltage | Current | Power | Weight | Size | RSS Bias & Scale Factor
– One-year Repeatability | Operating Temperatures | Survival Temperatures |
| QAT160 | ±20 g | <20 mg | <450 µg | 2.75 mA/g ± 1.8% | <450 ppm | <3 mrad | <400 µrad | <±100 µg/g2 | <5 μg | <200 Hz | 30g peak,50 to 800Hz | 20 grms | | 1000 g | 2000 g | ± 12.5 to ± 15.5 VDC | 6 mA per supply | 180m Watts | 55 grams | 1.0 in. dia. x 0.73 in. high | 1mg | 0 to 160°C | 175°C intermittent |
| QAT185 | ±20 g | <20 mg | <450 µg | 2.75 mA/g ± 1.8% | <450 ppm | <3 mrad | <400 µrad | <±100 µg/g2 | <5 μg | <200 Hz | 30g peak,50 to 800Hz | 20 grms | | 1000 g | 2000 g | ± 12.5 to ± 15.5 VDC | 6 mA per supply | 180m Watts | 55 grams | 1.0 in. dia. x 0.73 in. high | 1.5mg | ‘-40 to 185°C | 200°C intermittent |
| Mini Q | ±20 g | <15 mg | <600 µg | 1.3 mA/g | <400 ppm | <6.5 mrad | | | 1 μg | | | 30 grms | | 1000 g | 2000 g | ± 12 to ± 18 VDC | | | <25 grams | 0.79 in. dia. x 0.57 in. high | 1.8 mg | 0 to 150°C
0 to 185°C
0 to 200°C | -40°C to 215°C |
