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Product name： | BJ-1 type precision digital barometer | |||||
| specification： |   Zoom in on the image |
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| Category： | instrumentation and meters -- pressure gauge | ||||||
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Price： | factory price | |||||
| Brand： | Shanghai | ||||||
| Place of Origin： | China | ||||||
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Available Quantity： | batch | |||||
| delivery cycle： | Spot goods (or inquire by telephone) | ||||||
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It has the characteristics of high precision, high sensitivity, reliable structure, and intrinsic safety. The entire instrument is lightweight, easy to carry, resistant to general vibrations and collisions, and has stable and reliable performance.
It can measure both the absolute pressure value locally and the pressure difference between two points; It is an ideal portable instrument specifically designed for mine ventilation testing.
The explosion-proof mark is Exib Ⅰ (150 ℃) mining intrinsic safety patent number 86208794
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Main technical indicators | |
| measurement range |
0 to ± 200mbar (absolute); 0~± 500mmH2O (relative) |
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resolution |
0.1mbar (absolute pressure measurement); 0.1mmH2O (relative differential pressure measurement) |
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Applicable elevation range |
-1500 to+2500 meters (available in seven levels) |
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Precision |
Absolute pressure measurement: 0.5mbar (calibration period of three months) |
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0.1mbar (on-site calibration) | |
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Relative differential pressure measurement: 1mmH2O | |
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display |
Three and a half digit LCD digital display |
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temperature effect |
0.01~0.02mbar/℃ (absolute pressure measurement) |
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0.1-0.2mmHg (relative differential pressure measurement) | |
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Vibration resistance: When the instrument collides under normal use, the display change caused by vibration is not greater than | |
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0-0.1mbar (absolute pressure measurement) | |
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0.1-0.2mmHg (relative differential pressure measurement) | |
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environmental conditions |
Temperature: -10 ℃~+40 ℃ Humidity:<90% |
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Power supply: Using nickel cadmium alkaline battery pack (12V), it can work continuously for more than 24 hours after charging for 4 hours each time. | |
| Overall dimensions | 240x130x190mm3 |
| weight | 3kg |
| Note: Selecting instruments with consistent performance for group use can effectively eliminate temperature effects in relative pressure difference measurement. | |
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