Product Introduction

S908B Vibration Analyzer Explosion-Proof Version

True RMS measurement

4 parameters Metric version

Certificate No. CE18.2171, Mark Ex ib II B T6 Gb

1.  Preparation

 1). Check the voltage of the battery:

   Press M<easure> key, observe the display on the screen. If there is an arrow on the top left corner, you need to replace the battery with a new one.

2). Set-up probe

   S908B with outside accelerometer has 1 probe and 1 magnetic mount. When changing, take hold of the accelerometer to avoid rotation and damage of the cable.

2.  Measurement

1). Select the measure parameters:

S908B has 4 vibration parameters. They are:

a) Displacement(unit: mm=1/1000 mm): Equivalent peak-peak value

b) Velocity (unit: mm/s) : True RMS Value;

c) Acceleration (unit: m/s²): Equivalent peak

d) High Frequency Acceleration (unit: m/s²): Equivalent peak

2). Functions of the M<easure> key:

    a).Key press: Power on and begin measuring;

    b).Key release: Hold the last measured value for twenty seconds and then power off automatically.

3). Stick the probe to the measured object (the pressure should be about 0.5-1 kg.) 

3.  Notes

1). Avoid intense impact, high temperature and immersed in water.

2). Keep the sensor plug clean and dry, and use it carefully.

3). Install the battery:

    a) Open the small back cover of battery cabinet (2 screws at the end far away from the sensor at backside, see figure);

  b) Place a battery (6F22, 9V) correctly according to the polarity;

  c) Close the back cover and screw the screws tightly;

  d) If it has been put aside long-term, please take out the battery

    to avoid the outflow of the battery liquid;

  4) If the sensor has been used for over one year, please re-calibrate the sensor and the meter together to ensure the precision.

44. Specifications

1). Measurement condition:

Temperature: 0^oC -45^oC, Humidity<85%, Non-causticity environment, without strong electric-magnetic field & strong impact. It can be used in industry location by controlling the EMC environment throughout installation and/or usage.

2).AmplitudeRanges:

    Displacement  1-1999mm        peak-peak (*)

    Velocity       0.1-199.9mm/s   true RMS

    Acceleration and High Frequency Acceleration:

                  0.1-199.9 m/s²      peak (*)

*Note: peak-peak and peak are equivalent value means:  peak-peak=2.828*RMS while peak=1.414*RMS

3). Measurement accuracy: ± 5% of display ± 2 digits

Noise Level (without input): ACC<0.3m/s², VEL<0.5 mm/s, Disp<3mm

Frequency response accuracy: ±5%; (±10% for ACC 4.5kHz-10kHz)

Non-linearity: ±5%

4). Sensor type: Shear type Piezoelectric Accelerometer

5). Frequency response: 10-1000Hz (Inside accelerometer)

                  10-5000Hz (Outside accelerometer, depending on model)

High Frequency Acceleration: 1000-5000Hz ±10%

6).Battery: 9V6F22, 25 hours of continuous operation.

7). Configuration:

  Standard: Outside accelerometer with magnetic mount and probe

  Optional: Inside accelerometer with 2 handheld probes

8). Dimensions: 13´6´2.3 cm; Weight:250 g.

5.  Warranty

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