ALTIMETER, DIAL TYPE, 60MM, BKT-381, RANGE 5000MTRS

Description
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Model: bkt 381
Weight: 180g
1, measuring range: (height) 0 ~ 5000 meters; 580 – 1040 HPA; (temperature) – 30 degrees ~ 50 degrees
Resolution: 20m
3, Specifications: length 85 × width 68 × height 28mm, dial diameter 60mm.
4, storage condition: temperature is between -30 ° c and 65 ° c; humidity less than 90%.
Product description: This product is a barometer altimeter, built-in sensitive air pressure sensing device, can measure the real-time atmospheric pressure value of the location; due to the principle of inversely proportional height and atmospheric pressure, it can be used to measure relative height; Real-time altitude can also be measured after altitude correction.
This product is widely used for air pressure measurement, as well as mountaineering, fishing and other outdoor occasions, but it is not recommended for geographical survey! For details, please see the chart below.
Small compass and thermometer is just a decorative effect, after all, it is too small, the sensitivity is not high, to use the two functions, please go to the store to find professional compass and thermometer.
I Product Introduction
1, Product design application of physical principles:
(1) Air pressure decreases with increasing altitude;
(2) The change of air pressure will lead to the change of weather, this change will be displayed on the altimeter dial through high-precision transmission. The device can accurately measure the position height (absolute height), height difference, atmospheric pressure and forecast weather change.
2, No batteries or chargers, no maintenance or repair, is a good reliable tool;
3, Can project future weather changes according to the pressure value, let you be prepared;
4, easy to carry, reasonable design, give you easy and convenient outdoor sports.
Note: The distribution of compass and thermometer is not suitable for high precision requirements on occasions.
Ii. Introduction to use
1. Absolute height measurement
The altimeter must be initialized before use (or after purchase) (see illustration above), i.e. the altimeter must be digitally adjusted to the local actual altitude. Please note at this time: Please refer to the height marked on the map (also available on the internet, local weather office for local altitude) to calibrate the precise altitude of the location. In addition, changes in atmospheric pressure and weather also constantly affect altitude values, so it is necessary to constantly compare reference altitude values ​​during mountaineering or hiking.
For example, from the Meteorological Bureau found that the starting point of a is 200 meters above sea level, the altimeter pointer to the scale of 200, travel to position b, the dial scale is 1500, the elevation of point b is 1500 meters
2. Relative height
During climbing or traveling, if you need to measure the environmental height value, follow these two steps: