The ml-91 microwave leak instrument, which is a portable instrument for measuring the leakage of various microwave equipment into space energy, especially radar, microwave interruptions, satellite communications, remote sensing telemetry and so forth, is also of wide use in the health, labour protection and environmental detection sectors。
The ml-91 microwave leaker is equipped with two sensors (a stand-by) and the indicator is digitally displayed at a resolution of 0. 2 μw/cm2 and has automatic zero, automatic quantum transfer, automatic indicator of energy rise and descent, and automatic alarm。
Main technical parameters:
1. Environmental humidity under conditions of use: -10°c-+40°c, relative humidity of sensor protection light: 66% ± 15% atmospheric pressure: 750 ± 30mmhg
Working band: 3-33 cm
3 measurement power density range: 0. 2um/cm2-20mw/cm2
4. The instrument is numeric and the scale is divided into three classes: 200um/cm2 2 mw/cm2 20 mw/cm2 and is automatically converted with led
5. The instrument has an alarm function, and when the radiation power density is greater than 5 mw/cm2, the instrument alerts (valves adjustable)
Instrument works in both continuous and pulsed state. Both mean power density was shown, designed to effectively prevent the burning of probes with a power of 100 mw/cm2 (five times greater than the zui displayed value) and a peak power density of 3 w/cm2 (approximately 30 mw/cm2, 1. 5 times greater than the zui displayed value) at pulse wave operations
7. Precision of the site: ±0. 75 db
8 the full mass error of the prompter at rated voltage is not greater than 1. 5%
Indicator exterior size: 82 x 40 x 172 mm
10. Net weight of indicator: approximately 0. 8 kg
Use and maintenance of ml-91 microwave leak instrument
1. In order to prevent damage to the film in the perimeter's powerful electromagnetic field, the probe shall normally be placed in the cut-off shield before being introduced into the test site, and the plug shall then be inserted into the input slot in the front right of the indicator。
2. The indicator uses a 9v dry battery of 6f22 to open the switch to determine that the electrical energy can be preheated by two to three minutes, after normal use (the display screen does not appear "lobat"), so that it can be set to zero。
3. A slow extraction of mid-probes indicates the presence of an electromagnetic field in the space if the display increases and if the reading exceeds 50 uw/cm2, indicates that it has entered a harmful area of the human body。
4. When the measuring equipment is leaked, the sound of an alarm starts when the probe is slowly approaching the device and, in the process of approaching, the indicator reading exceeds 5 mw/cm2. It is all the more important to be careful at this time that the observation indicator readings stop immediately when 20 mw/cm2 is overscaled, otherwise not only results can not be read but sensitive items within the probes are burned。
5. This aircraft's probe is a plane-level formation with a certain orientation. If the zui value is to be recorded, it will have to be rotated and there will be two “twirl” signposts on its panel to indicate whether readings are increasing or decreasing during rotation. When the zui value is high, the two "polymous" signal lamps alternately glow。
6. Because of the high sensitivity of the indicator, the resolution is close to the noise level, the indicator will have an ups and downs of ±1 words, plus the inherent flip error of the a/d converter, and the random noise of the machine will be approximately ±2 words, sometimes minus the average background value in the measurement readings, if the communication noise string affects normal zero。
7 the measurement time read value is a p-reading value, which is calculated in conjunction with the formula before the actual microwave power-density (radiation) value (p) of the site being measured can be obtained。
η10 log
8. The instrument shall be powered out in a timely manner, the probe shall be placed back in the shield and the connector shall be removed and placed in the case, and the dry battery shall not be removed for long periods of time。
9. The whole machine shall normally be located in a dry, less-temperature, non-hazardous gas and low-radiation field of the perimeter, in addition to avoiding strong vibrations to avoid damage to sensitive equipment。
Lubo provided full technical support and after-sales services for the instrument