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Purpose: The device is designed to monitor compliance with the maximum permissible levels of high-frequency radiation (alternating electric field strength, alternating magnetic field strength and electromagnetic field energy flux density) at the workplaces of personnel servicing electrical and radio engineering installations and systems emitting an electromagnetic field, in accordance with GOST 12.1.006, GN 2.1.8./2.2.4.019 and San-PiN 2.2.4/2.1.8.055.

The principle of operation of the electroplating thickness gauge: A converter with an induction coil on a ferrite core generates a high-frequency signal (frequency 1 MHz), which is used to create an alternating magnetic field. As the converter approaches the conductive surface, an alternating magnetic field creates eddy currents, the magnitude of which depends on the characteristics of the metal base and the thickness of the coating. In turn, eddy currents create their own electromagnetic field, which can be received by an induction coil. The resulting signal enters the amplitude detector, after which it is transmitted to the processing unit, where it is digitized and displayed on the device readout. In addition to signal conversion, the processor is used to set the required gain, as well as the initial voltage offset, depending on the characteristics of the materials in the controlled object. Features of the device design and advantages of the measurement method The TL-1MP eddy current thickness gauge consists of an electronic unit with a display, a power supply and a converter. The device is controlled using four buttons located on the front panel of the electronic unit. The converter can be disconnected from the electronic unit during transportation or for convenience of storage. The advantages of the device include: - convenience and ease of operation; - small size and light weight, allowing the TL-1MP to be used in difficult conditions with limited access to the controlled area of the facility; - high measurement accuracy; - factory setting of the measuring instrument to the customer's requirements; - high degree of localization of defects due to the small size of the converter. Scope of application: The service life of metal parts and components of mechanisms used in mechanical engineering is largely determined by their resistance to corrosion and surface wear. However, not all metals are sufficiently resistant to external destructive influences. Therefore, various electroplating coatings made of zinc, nickel, chromium, cadmium, tin, copper, silver and other metals are used to protect them. Even small fluctuations in the thickness of protective coatings can significantly affect the performance characteristics of parts, their service life, and interaction with other components. Therefore, measuring the thickness of the metal coating applied by the electrochemical method is important when conducting quality control of products. The use of the TL-1MP eddy current thickness gauge allows non-destructive quality control of electroplating coatings on the surface of metal parts in mass production conditions with special requirements for product quality. The device detects even small mechanical defects, the effects of abrasion, erosion, corrosion on the surface. Due to its ease of use, efficiency and reliability, eddy current thickness measurement is a standard method of quality control of products with electroplated coatings in such industries as mechanical engineering, aerospace industry.

The device replaces the devices for checking the attenuators D1-13A and D1-25. D1-29 is a step attenuator with a range of attenuation from 0 to 110 dB with a step of 10 dB, operating in the frequency range from 0 to 150 MHz. The device consists of a housing with damping cells and a switch with a counting device. The housing contains coaxial input and output connectors, as well as additional connectors "40 dB" and "80 dB", necessary for the verification of the device. Technical specifications Operating frequency range 0 – 150 MHz Difference attenuation setting range (after 10 dB) 0 – 110 dB Input electrical resistance to direct current 50 ± 0.1 ohms The output electrical resistance to direct current when connected to the load input is 50 ± 0.1 ohms 25 ± 0.1 ohms The main absolute error of the difference attenuation setting relative to the 0 dB mark at direct current ± (0.002 - 0.02) dB The main absolute error of the difference attenuation setting relative to the 10 dB mark in the frequency range up to 30 MHz ± (0.004 - 0.9) dB The main absolute error of the difference attenuation setting relative to the 10 dB mark in the frequency range over 30 to 150 MHz ± (0.09 - 3.0) dB The maximum permissible value of the electrical voltage (DC or AC) at the input of the attenuator 3 In the operating temperature range from 5 to 40 ° C Overall dimensions, mm 149x95x149 Weight, not more than 3 kg

Frequency comparators CHK7-1011 and CHK7-1011/1 can also be used as frequency and time standards with frequency correction based on GLONASS/GPS signals as sources of highly stable signals in various frequency measuring systems. Comparators have a built-in device for processing measurement data based on a microcomputer, which provides statistical processing of the results of frequency and time measurements, and a device for displaying information based on a color TFT display. The built-in diagnostic system allows you to quickly determine the operability and condition of the main comparator devices with information output to the built-in display screen. Comparators are available in three versions and differ in composition and functions performed. Comparators have a basic set of devices (modules), including a frequency comparator, a power supply module and a device for processing and displaying information based on a microcomputer and a color TFT display. The frequency comparator CHK7-1011 has a built-in SRNS receiver and a highly stable rubidium frequency standard Ch1-1014 with the function of correcting the actual frequency value by signals from satellite radio navigation systems GLONASS or GPS. The comparator forms its own time scale with the ability to synchronize on any external time scale received by the SRNS receiver built into the device. The device has two modes for measuring the deviation of the generated time scale: from the time scale of the built-in SRNS receiver and from the external time scale. Information about the current time received from the SRNS receiver is displayed on the comparator display screen, and is also transmitted to the consumer via the RS-485 interface. All the above-mentioned features make the frequency comparator CHK7-1011 a unique measuring device in the field of frequency and time measurements. The frequency comparator CHK7-1011/1 has a highly stable rubidium frequency standard Ch1-1013 and can be used as a frequency and time standard as a source of highly stable signals in various frequency measuring systems. The frequency comparator CHK7-1011/2 does not include any additional devices. To carry out measurements with it, it is necessary to use a highly stable signal of the reference frequency from an external RF or hydrogen frequency standard. For the convenience of users, apart from the keypad, they can also exercise control of the functions of the devices with a mouse-type manipulator included in the delivery package. Comparators provide access to measurement data over an Ethernet network.

The composition of the PM-10 verification module: Wattmeter of passing power M2-35; Complex transmission and reflection coefficients meter "OBZOR-804/1"; Universal voltmeter V7-81 (2 pcs.); High-frequency signal generator G4-229; High-frequency signal generator G4-230; DC power supply B5-79/1 (2 pcs.); AC power source B2-7 (2 pcs.); The measure of DC electrical resistance is multi-valued MS3070-3, CT 0.005; The measure of DC electrical resistance is multi-valued MS3055, CT 0.02; Single-digit electrical resistance measures MS3080 (0.1; 1 ohm, CT 0.005); Thermoelectric voltage converter 0.5 V; Kit for measuring coaxial connectors KISK-7M; PC, printer; Basic load-bearing structures (BNC). Technical specifications Measuring ranges of electrical and radio engineering quantities: Operating frequency range from 0.03 to 17.85 GHz Passing microwave power from 0.01 to 10 MW VSWR of the microwave tract from 1.05 to 3 Constant electrical voltage from 10 MV to 1000 V Alternating electric voltage from 1 mV to 750 V Thermoelectric voltage comparison from 0.1 to 0.5 V Ranges of reproduction of electrical quantities: Constant electrical voltage from 1 to 120 V Resistance to direct electric current from 0.01 to 122222.21 ohms Measurement errors of electrical and radio engineering quantities: Passing microwave power ± (1.5 - 2.3) % VSWR of the microwave path ± (4,15 – 10) % Constant electrical voltage ± (0.003 – 20) % Alternating electric voltage ± (0.09 - 15) % Thermoelectric voltage comparison ± (0.01 – 0.1) % Errors in the reproduction of electrical quantities: Constant electrical voltage ± (100 – 200) mV Resistance to direct electric current CT 0.005; 0.02 General technical characteristics: The area occupied by the module is 4 – 8 m2 Weight, not more than 340 kg Power supply voltage from 198 to 242 V with a frequency of (50 ± 0.5) Hz Power consumption, not more than 2000 VA

The signals of the navigation receiver's second mark and the RF available for the customer`s use are generated simultaneously on two high-frequency outputs of the receiver board. In the presence of stable reception of signals from satellites of the GLONASS and GPS radio navigation systems, the board ensures the operation of the RF in the frequency binding mode according to the signals of the second timestamp (the so-called “disciplined” rubidium frequency standard mode) with a relative error of the actual value of the RF frequency of no more than ± 5.0.10-12.

The companies NTM-Zashchita LLC (Moscow) and Avtospectr-NN (Nizhny Novgorod) have implemented a joint project "Mobile Laboratory for Physical Factors Control", which is a mobile complex equipped with the most modern equipment of well-known Russian and foreign manufacturers, designed to effectively solve the problems of sanitary and hygienic control and labor protection, certification of workplaces and monitoring of the production environment.

Technical specifications: DC voltage , Measuring range, 10 mv-1000V Measurement error, ± (0.05% +4 E.M.R.) AC voltage , Measuring range, 1 mV - 750 V Measurement error, ± (0.5% +4 E.M.R.) Frequency range, 20 Hz- 100 kHz Direct current , Measuring range, 0.1 µA - 10 A Measurement error, ± ( 0.25% +4 E.M.R.)

It is made on a modern element base with a matrix display and microprocessor control, which allows processing the received data. With the help of the prefix, it allows you to evaluate the effect of electrification or antistatic treatment of textile and shoe polymer materials and products made from them, both in laboratory conditions and in conditions of real use of clothing and shoes. Recommended by Gossanepidnadzor for use for sanitary supervision to control the electrostatic field strength at the workplaces of PC operators, the electrostatic potential on the screen of video display terminals (VDT) and also in other areas of production regulated by GOST 12.1.045-84 and SanPiN 2.2.4.1191-03 "Electromagnetic fields in production conditions".

Since it is reliable and easy to operate, the device is widely used in metrological centers, measuring laboratories, at the workplaces of REA developers. The comparator Ch7-1014 has a communication interface with an external personal computer USB 2.0 and application software for an external PC. At the request of the customer, the comparator can be supplied complete with a laptop or tablet computer with installed software.

The main field of application of the calibrator is the verification of measuring instruments. The calibrator is capable of operating both independently and as part of automated measuring systems with interfaces such as USB, RS-232, IEEE-488 and ETHERNET. Technical specifications Ranges of reproduction of electrical quantities: - constant electrical voltage from 0 to 1000 V - alternating electric voltage in the frequency range from 10 Hz to 70 kHz from 0.9 mV to 1050 V - alternating electric voltage in the frequency range up to 100 kHz up to 750 V - alternating electrical voltage in the frequency range up to 1 MHz to 110 V - the power of direct electric current from 0 to 2 A - the power of alternating electric current in the frequency range from 10 Hz to 10 kHz from 0.9 µA to 2 A - electrical resistance of 1, 10, 100 ohms, 1,10,100 kOhm, 1,10,100 mOhm Errors in the reproduction of electrical quantities: - constant electrical voltage ± (0.0012 – 0.003)% of U + (0.0003 – 0.015)% of Up - alternating electric voltage in the frequency range from 10 Hz to 1 MHz ± (0.007 – 0.3)% of U + (0.001 – 0.25)% of Up - DC current ± (0.004 – 0.007)% of I + (0.001 – 0.01)% of Ip - AC electric current in the frequency range from 10 Hz to 10 kHz ± (0.015 – 0.1)% of I + (0.002 – 0.1)% of Ip - electrical resistance ± (0.002 – 0.005)% General characteristics: Operating temperature range from 5 to 40 °C AC power supply 220 V, 50 Hz Power consumption, no more than 500 VA Overall dimensions, mm 480x200x550 Weight, not more than 35 kg