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Wi-Fi Inclinometer

Vigor Technology MEMS Inclinometer / Wi-fi Inclinometer


  • Based on high performance SST300 inclinometer 
  • According to IEEE802.11b/g, Wi-Fi compatible 
  • Support topology & AP etc. network types 
  • High speed transmission and security 
  • 2.4G ISM band 
  • RF certifi cated by FCC, CE… 
  • Operation temperature: -40~80℃ 
  • Radio range up to 200m 
  • Customized wireless sensor network (WSN), 256 nodes coverage
Wi-Fi Inclinometer

Table 1 Specifications

Measurement range ±5° ±10° ±15° ±30° ±45° ±60°
Combined absolute
accuracy ①(@25 ℃ )
±0.01° ±0.015° ±0.02° ±0.04° ±0.06° ±0.08°

Absolute linearity(LSF,%FS)

±0.06 ±0.03 ±0.03 ±0.03 ±0.02 ±0.02

Cross-axis sensitivity②

Offset ③ ±0.005° ±0.008°
Repeatability ±0.0025°
Hysteresis ±0.0025°
Allowed installation misalignment④ ±4.0° ±3.0° ±2.5° ±1.5° ±1.2° ±1.2°
Input-axis misalignment ≤±0.1°
Sensitivity temperature drift
≤100ppm/℃ ≤50ppm/℃
Offset temperature drift
≤0.003°/ ℃
Offset turn on repeatability⑤ ±0.008°
Resolution 0.0025°
Long-term stability(1 year)⑥ ≤0.02°
Measurement axis 1 or 2 axis
Temperature sensor Range: -50~125℃, Accuracy:±1℃
Output Wi-Fi(TCP/IP & UDP)
Other output please refer to Table 5.2
Cold start warming time 60s
Response time⑦ 0.3s(@t90)
Refresh rate(digital output) 5Hz(Optional 10Hz,20Hz)
Response frequency⑧ 3Hz @-3dB
Power supply 9~36VDC
Debug interface RS232
Power consumption Average current ≤ 300mA (25 ℃& 24VDC)
Operation temperature range -40~85℃
Storage temperature range -60~100℃
Insulation resistance 100MΩ
MTBF ≥25000 h/times
Shock 100g@11ms, three-axis, half-sine
Vibration 8grms, 20~2000Hz
Protection IP65(Optional IP67)
Connecting Military class connector(MIL-C-26482)
Weight 350g (without connector and cables)

① Combined absolute accuracy means the compositive value of sensor's absolute linearity, repeatability, hysteresis, offset and cross-axis sensitivity error.(in room temperature condition) as
②The cross-axis sensitivity means the angle that the tilt sensor may be banked to the normal tilt direction of sensor. The cross-axis sensitivity (± 0.1%FS)shows how much perpendicular acceleration or inclination is coupled to the inclinometer output signal. For example, for the single-axis inclinometer withrange ±30°(assuming the X-axis as measured tilt direction), when there is a 10° tilt angle perpendicular to the X-axis direction(the actual measuring angle is no change, example as +8.505°), the output signal will generate additional error for this 10° tilt angle, this error is called as cross-axis sensitivity error.SST300`s cross-axis sensitivity is 0.1%FS, the extra error is 0.1%×30°=0.03°(max), then real output angle should be +(8.505°±0.03°). In SST300 series,this error has been combined into the absolute accuracy
③ Offset means that when no angle input (such as the inclinometer is placed on an absolute level platform), output of sensor is not equal to zero,the actualoutput value is zero offset value.
④ Allowed installation misalignment means during the installation, the allowable installation angle deviation between actual tilt direction and sensor's nature measure ment direction. In general, when installed,SST300 sensor is required that the measured tilt direction keep parallel or coincident with sensor designated edge, this parameter can be allowed a certain deviation when sensor is installed and does not affect the measurement accuracy.
⑤ Offset turn on repeatability means the repeatability of the sensor in repeated by supply power on-off-on many times.
⑥ Long-term stability means the deviation between the statistics of the maximum and the minimum output value after a year of continuous power supply when the sensor is at 20℃ .
⑦ The response time refers to the angle sensor in a step change (such as the angle changes from -10 ° to +10 °within 5ms), the time required that output of the sensor achieved to the standard value of 90%. The index is different from the sensor set-up time
⑧ Response frequency is for the limitation of the dynamic measurement range, when the dynamic measurement exceeds 3 Hz, because of centripetal force, the output occupied additional random error,this error is difficult to define.

Table 2 Wi-Fi communication Specifications

WLAN protocol IEEE 802.11b/g, Wi-Fi compatible
Radio channel 802.11b: USA, Canada and Taiwan – 11
Most European Countries – 13
France – 4, Japan – 14
802.11g: USA and Canada – 11
Most European Countries – 13
Modulation system DSSS, OFDM, DBPSK, DQPSK, CCK, 16-QAM, 64-QAM
Band 2.4G ISM
Transmission power 15dBm ±1.5dBm
Receiving sensitivity 802.11b:-91dBm
Antenna interface IPEX antenna connector
Wireless data transmission rate 802.11b: 1, 2, 5.5, 11Mbps
802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps
Wireless network co-existence Cell phone(GSM/DCS/WCDMA/UMTS/3G) co-existence
WLAN setting up Support AP & Ad-Hoc
Encryption Support WEP40 and WEP104 encryption (64/128 bit). Support OSI & Shared key model
Wireless Medium Access
Control(MAC) protocol
Reset to Network Connection ≤3s(WEP), 6s(WPA)
Other function Wi-Fi automatically recovery after dis-connection
max transmission speed 60kb/s( send & receive simultaneously), 90kb/s(send or receive)
DNS service
Support protocol TCP and UDP
Support TCP Server and Client
Support UDP broadcast or uni-cast
TCP Automatically connection after disconnection
As TCP server, permit 3 clients connection
Flexible configuration: HTML or PC software