Dosimetric device DP-5V: description, diagrams and characteristics

2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16

The dosimetric device DP-5V was designed for use by the troops. It is intended for use in confrontation conditions, when nuclear weapons are used to conduct reconnaissance of the area for radiation contamination.

General information

The radiation reconnaissance device DP-5V is an X-ray meter. Designed for use in RKhBZ compounds. That is, exclusively in radiological, chemical and biological protection. But in practice, due to its excellent characteristics, the device is used not only in them. What radiations are registered by the DP-5V device when used? It was created in order to measure the level of gamma radiation and the radioactive contamination of individual objects. To determine the exposure dose, units such as roentgens and their derivative (milli-) per hour are used. There is also the possibility of fixing beta radiation.

About functioning

The appliance starts working fully one minute after self-heating. The measured range of gamma radiation ranges from 0.05 mR/h to 200 R/h. For energy, the indicators range from 0.084 MeV to 1.24 MeV. The device device provides for the presence of six sub-ranges of measurements. The readings are counted on a scale. In this case, it is necessary to multiply the obtained value by the coefficient corresponding to the subrange. The component of the scale, which is outlined by a solid line, is considered as a working area. For all sub-ranges (except the first one), sound indication is provided. The best working conditions: temperature - 20 ° C, relative humidity - 65%, atmospheric pressure - 750 millimeters of mercury. Although the dosimetric device DP-5V can function in significantly different conditions. So, it helps to measure the level of radiation at temperatures from -50 to +50 ° C. Regarding humidity, we can say that it is desirable that it does not deviate from the recommended value by more than 15%. Although measurements can be taken at 98% (however, this requires a temperature of 40 ° C. The blog also works in water at a depth of up to 50 centimeters. And this is not the limit - the device provides measurements after being in a dusty environment with an intensity of 5 mm /min

Specific properties

Recommended values are indicated for a reason. The fact is that when deviating from them, errors begin to appear. So, for every 10 degrees to +50 °C, there is a 10% inaccuracy. Up to 50 °C, this figure is about 5%. It should be noted that the device does not provide for the possibility of organizing a "reverse stroke" for the arrow. Therefore, the value for1-3 subranges should not exceed the overload threshold of 300 R/h. But for the 4-6 subrange, the limit becomes 50 R/h.

Maintaining He alth

The device DP-5V is designed to measure the level of beta and gamma radiation. But in order for it to fully perform its work, it must be monitored, carefully moved and protected from negative factors. The mass of the device itself with batteries is no more than 3.2 kg. A complete set in a stowage box weighs up to 8.2 kg. Power is provided by three elements of the KB-1 type. One of them is used to illuminate the scale of the microammeter to ensure the workflow in conditions of lack of light. The entire power pack is designed to provide continuous operation (without taking into account the need to waste energy on lighting) for a period of at least 55 hours if fresh cells are used. The device can maintain its performance after a number of climatic and mechanical influences, namely:

1. Up to +65°С and -50°С.
2. After falling from a height of 50 centimeters.
3. Transport shaking with a frequency of 80-120 beats per minute and an acceleration of 1000 m/s2.
4. Vibrations in the range from 10 to 80 Hz. Provided that the acceleration does not exceed 30 m/s2.
5. Strikes at a frequency of 80-120 units per minute. Provided that the acceleration is not more than 150 m/s2.

What's included?

First of allDP-5V itself should be mentioned. The device device provides for the presence of a detection unit, a case and a phone. The kit includes a hose extension, voltage divider, a set of operational documentation, a stowage box and spare equipment.

How does a measuring instrument work?

The DP-5V includes a measuring console and a detection unit. They are connected using a flexible cable, the length of which is 1.2 m. There is a control source on the detection unit. The console has the following main components: converter boards, bases, chassis, casing and power compartment covers. The last three are made of pressed press material. They are characterized by high mechanical strength. On the top front of the casing are:

1. Toggle switch for backlighting the microammeter scale.
2. Subband switch with 8 positions.
3. Microammeter scale.
4. Reset button.

Control elements of the device are installed on the chassis. A cable is connected to the base of the meter, which connects the detection unit, telephone jack and remote control. The elements of the circuit are mounted on the printed circuit board of the converter. It is also attached to the base with a screw on one side and a hinge on the other. Below (at the base) are power sources.

How does the device work?

The detection unit is the most important. It is completely sealed and has a cylindrical shape. It has a feewith gas-discharge counters and other circuit elements. The DP-5V device provides for a steel case with a window, the task of which is to detect beta radiation. For sealing use a polyethylene sheath. The design of the device provides for its fixed position. When determining the values, gas-discharge counters play an important role. They, under the influence of gamma quanta and beta particles present in the medium, provide the issuance of electrical impulses. Those get to the input of the amplifier-normalizer. And already he, together with bit chains, contributes to their normalization and processes for convenient informing a person about the state of affairs.

The integrating circuit averages the value of the pulse current. Its value is proportional to the average exposure dose rate of detected gamma-beta radiation, which, in fact, is recorded by a microammeter. Power supplies are needed to provide energy to the voltage converter and to illuminate the scale. In this case, a constant low value (which ranges from 1.7 to 3 V) is converted to 390-400 V. All this is necessary to power the normalizer amplifier and gas-discharge meters. And why was a telephone included in the DP-5V device? It is connected to the remote control for sound indication signals. When working with this device, radiation safety requirements must be observed. They include:

1. Maximum distance from radioactive source.
2. Minimize the time the device stays in the raised position.
3. Use of serviceable and charged personal dosimetersDK-0, 2.
4. You should always try to reduce the amount of time personnel spend in the immediate vicinity of the source container and in the exposure area.

General recommendations for use

Now, when the purpose of the DP-5V device is quite clear, it is only necessary to go over the issues of maximum safety of the device. What needs to be done for this? Take care of the overall safety of the device. It must be regularly cleaned of dirt and dust. It is not necessary to leave the device switched on during a break in work. This results in a waste of power supplies. When turning the switch knob, do not apply much force. In preparation for the march, it is necessary to inspect and check the kit and its performance. If there are no problems, then the DP-5V device should be placed in a packing box. In most cases, it is envisaged that the movement must be carried out by car. In this case, it is desirable to place the devices in the front of the body. During the transportation process, protect the device from bumps, bumps and drops.