BVR m Description of the type. JSC IPF "Sibnefteavtomatics" - measuring equipment. User's manual

Purpose

The microprocessor consumption calculation unit with software (software) for gas and fluid accounting is designed to convert input information about the parameters of the gas or liquid and calculating the volume and volumetric flow rate of the gas provided to standard conditions or flow and the volume of liquid may To be used on industrial facilities, as well as utility facilities in the meters and flow meters.

Signal parameters

The BVR.m block ensures the formation of a galvanically unleashed channel (optocoupler key) of the discrete control signal (alarm system, indication).

Functions

• connection and power supply with a galvanic isolation of two flow sensors with a frequency or pulse output signal, the type of signal "dry contact";
• connection and power supply from one source of temperature sensors and pressure with a current output of 4-20 mA (total number of sensors no more than four);
• measurement of the time of the device and gas meter, as well as the indication of real-time clock;
• calculation of the volume of gas provided in accordance with PR 50.2.019-2006 to standard conditions according to GOST 2939-63;
• registration and storage of medium-hour and average daily values \u200b\u200bfor temperature, pressure, volumetric flow rate over the past two months, as well as information by a growing outcome of the value of gas volume at operating conditions, gas provided to standard conditions (in m 3), and time of operation instrument and gas meter;
• transmission of information to the top level using the standard RS-232 or RS-485 interface (Modbus-RTU exchange protocol);
• record stored information on the SD / MMS memory card, at the request of the operator;
• mapping instantaneous gas stream parameters and current information on the final parameters on the display indicator screen;
• saving information about the average hour, average daily and final parameters when the power is turned off;
• the exclusion of unauthorized access to the program.

TERMS OF USE

Under the resistance to climatic and mechanical impacts under the operating conditions, the BVR unit corresponds to a group of execution 3 according to GOST 22261-94, but for ambient temperature from plus 5 ° C to plus 50 ° C and relative humidity up to 90% at 25 ° C.

COMPATIBILITY

The microprocessor bvrm flow calculation unit can be part of:

• gas meter vortex svg.m;
• electromagnetic flow meter ERIS.V (L) T;
• water meter electromagnetic SVEM.M;
• fluid meter Single;
• steam counter of vortex SVP (with "couples");
• the thermal energy meter STS.M (with "heat").

SPECIFICATIONS

• The main relative error in the channel "Pressure", not more than ± 0.1%;
• The main absolute error through the channel "Temperature", not more than ± 0.5%;
• The main relative error in the channel "Consumption", not more than ± 0.1%;
• The main relative error of the BVR unit in determining the flow rate and volume of gas provided to standard conditions, not more than ± 0.35%;
• The main relative error in measuring the time of operation, not more than ± 0.05%;
• The power supply of the BVR.m is carried out from the AC network with a voltage (220 ± 22) in and the frequency (50 ± 1) of Hz;
• Power consumption (without sensors), not more than 5 V · a;
• Overall dimensions of a block of not more than 210x215x90 mm;
• The mass of the BVR block is not more than 2 kg.

Download files:

The microprocessor unit for calculating the gas flow rate of the BVR.m is designed to calculate and bring the values \u200b\u200bof the working volume of the gas obtained from the meter to standard conditions on the basis of signals obtained from the temperature and pressure sensors installed in the gas pipeline. Compatible with many gas meters, fluid, steam, heat, flow meters, including can be part of the Counters of SVG.M, SVEM.M, Szu, SVP and others.

BVR unit allows:

• receive data and power up to 2 sensors of consumption in the frequency or pulse channel;
• receive data and power up to 4 temperature sensors and pressure on the current channel;
• store the resulting summing data in an hour, day and month for the last 2 months
• save data in case of power disconnection
• transmit data over the RS232 / 485 interface
• save data to an external SD memory card
• protect data and device settings from unauthorized access

The device is made in climatic execution UHL4 and can operate in heated room at a temperature of from 5 to 50c

Specifications:

Block bvr.m.

Error in frequency channels: 0.1%
Top Channel Error: 0.1%
Calculation Error: 0.05%
Input frequency: 0.25 - 1000 Hz
Open Key Resistance: 500 Ohm
Closed Key Resistance: 50 com
Information Transmission Interface: RS232 / RS485
Power supply voltage: 24V
Voltage from the network: 220V
Power consumption: 5VA
Mass: 2kg
Service life: 12 years