SPUTNIK-MASSOMER.NT metering units are designed for:
AGZU SPUTNIK-MASSOMER.NT includes technological, hardware blocks as well as life support systems Technological block includes measuring and distribution modules.
The main part of the measuring module is a two-chamber horizontal separator. Separator chambers are made in the form of cylinders of different diameters located one above the other. The upper chamber equipped with a cyclone is the first stage of separation and serves for the primary separation of gas from the liquid and also for the dehydration of the gas using demister mounted inside.
The lower chamber with larger diameter serves to accumulate crude oil flowing from the upper chamber and secondary gas separation from the liquid.
Flow distribution is automatically controlled with multi-stream switching manifold (PSM) or three-way valves providing alternate connection of wells to the measuring module.
The hardware module includes measurement and information processing block (BIOI) and power control block (BSU).
BIOI processes the measurement information coming from the flow transmitters, pressure and temperature transmitters, generates the measurement information by mass and the average daily mass flow rate of crude oil, the volume and daily average gas flow rate, indicates and transmits the measured and determined parameters via communication channels, controls the measurement process.
Elements of the life support system provide shelter (block-boxes), heating, lighting, ventilation, fire and gas alarm.
can be delivered with two flow meters installed on a gas pipeline and on a pipeline draining liquid from the lower chamber of the separator (liquid line) or with one flow meter mounted only on a liquid line.
Number of connected wells (depending on unit design)
1 – 14
Range of production rate nominal values of wells connected to the installation, m3/day.
400, 1500, 2000, 3000, 4000
working pressure, mpa max
Supply voltage deviations, %
from -15 to +10
AC frequency, Hz
Power consumption, kW
Ambient air conditions:
from -40 to +40 (UL); from -60 to +40 (UHLL)
Relative humidity, %
Temperature range, °C
from 5 to 60
Kinematic viscosity of liquid at t = 20°C, cSt
Oil density, kg/m³
Formation water density, kg/m3
Watercut, wt %
from 0 to 100
Wax content, vol %
solids content, wt %
H2S content, vol %
Gas oil ratio, m3/ton (at normal conditions)
Type and number of input / output signals (channels) of the BIOI control block, min:
Unified current input signals (8 channels)
Digital input signals
Discrete output signals
Information and communication channels:
Operator panel rs232 port
Combined channel rs485 / rs232, modbusrtu
At the customer's request
The connection lines of the internal "modbus" information channels (watercut meter, flow meter) are protected by a lightning protection device and intrinsically safe barriers
Limits of relative error, %
Control Block BIOI:
Measurements of unified current signals
Measurements of time intervals
Pulse number measurements
AGZU metering unit (in accordance with the GOST 8.615-2005):
Metering of mass and average mass flowrate of crude oil
Metering of mass and average mass flowrate of dehydrated oil according to watercut value range
from 70 to 95
Determining mass and average mass flowrate of oil at
Design of instrumentation, devices and electrical equipment
Design of the electrical equipment in the hardware block