Introduction
ER-NSM-1 is a north-seeking type module specially designed for north-seeking, orientation and initial alignment use in surveying tools/gyro tools, mining/drilling equipment, unmanned aircraft launch systems, satellite antennas, target tracking systems, etc.
ER-NSM-1 is specifically designed for north-seeking applications. Its advanced differential sensor design can resist the influence of linear acceleration, enabling it to operate in extremely harsh environments, even in the presence of shocks and vibrations.
Features
North-seeking type measurement module
Low power consumption
Low-cost and high reliability
Several shapes optional
Application areas
North seeking in logging tools/gyro tools
Pointing, steering in advanced mining/drilling equipment
Direction pointing and tracking in satellite antenna
Orientating and positioning in railway train system
Precision platform attitude measuring and controls
North finding and positioning in land surveying/land mobile mapping system
Petroleum exploration;
Specification
| Parameters | ER-NSM-101 | ER-NSM-102 | ER-NSM-103 | Unit |
| Gyro | ||||
| Scale factor at 25°C | 80000 | 28000 | 20000 | lsb/deg/s |
| Scale factor repeatability (1σ) | <50 | <50 | <50 | ppm |
| Scale factor vs temperature (1σ) | 300 | 300 | 300 | ppm |
| Scale factor non-linearity (1σ) | <200 | <300 | <400 | ppm |
| Bias stability (1σ 10s) | <0.2 | 0.3 | <0.5 | deg/hr |
| Bias stability (1σ 1s) | <0.6 | <1 | <1.5 | deg/hr |
| Bias repeatability (1σ) | <0.2 | 0.3 | <0.5 | deg/hr |
| Bias error over temperature (1σ) | 3 | 10 | 3 | deg/Hr |
| Bias temperature variations, calibrated (1σ) | <0.3 | <1 | <0.5 | deg/Hr |
| Accelerometer | ||||
| Range | 30 | g |
| Bias Stability (10s 1σ) | <50 | ug |
| Bias Repeatability | 100 | ug |
| Bias Temp Coefficient | <20 | ug/℃ |
| Bias Temp Hysteresis | <1.5 | mg |
| Scale Factor Non-linearity | <500 | ppm |
| Scale Factor Repeatability | <30 | ppm |
| Scale Factor Temp Coefficient | 10 | ppm/℃ |
| Class II Non-linearity Coefficient | <100 | ug/g² |
| Scale Factor | 250000 | Lsb/g |
| Environment and power | ||
| Operate temperature | -40~+80 | ℃ |
| Storage temperature | -55~+105 | ℃ |
| Power supply | 6~12V | V |
| Power (power supply 6V) | 2 | W |
| Communication interface | RS-422 | |
| Physical characteristics | ||
| Size | A :70*65*45mm
B: 38.6 x 44.8 x 25.5mm
C:47×44×14mm:
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| Weight | A : ≤220g(withshell)
≤100g(without shell and baseboard) B: ≤70g C:≤40g |
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