We use cookies to omprove your experience on the site. Please read our Privacy Тerms to find more.

I accept Learn more

KTM100 RUS ®

Purpose – Metering of flare gas amount in atmosphere, continuous processes


  • Range of gas velocities from 0.03 до 120 m/s according to flare systems safe operation rules of Russian Federal Service for Ecological, Technological and Nuclear Supervision (Rostekhnadzor);
  • Metering at high temperatures to +330°C;
  • Cutting in and removal of sensors under operating pressure;
  • Simulation calibration method;
  • Operating pressure to 6.3 МPа – cut-in version;
  • Operating pressure to 25 МPа – base version;
  • Measurement error of the single-beam version is ±1.5-5%, two-beam version, ±1-3%;
  • Installation of the Ex d computing device at the primary sensors installation site;
  • Remote indication and control module, length from the installation point – 1000 m;
  • Self-check of beams contamination and the flow meter general state;
  • Calculation of gas mass flow rate without a density meter by “Hydrocarbon” method;
  • Service life – 15 years.


Technical characteristics КТМ100 RUS
Type of transmit-receive unit КТМ100 FL LB КТМ100 M LB КТМ100 PR LB КТМ100 Light
Measured flow rate range, m/s

from 0.03 tо 120

from 0.03 tо 90

Relative measurement error, %

1 – beam measurement: 2 or 1.5

2 – beam measurement: 1.5 or 1

Mass flow rate calculation relative error,%


Resolution, m/s


Gas operating temperature range, °С from -70 to +1801) from -40 to +180
Recommended angle of installation to the pipe axis,°С 75 90 75 75
Pipe inner diameter, м¹ from 0,2 to 1,82) from 0,05 to 0,63) ≥0,3 from 0,05 to 0,6
Operating excess steam pressure, MPa from -0,05 to 1,64) from -0,05 to 1,6
Ambient temperature, °С

Transmit-receive units: -70…+60

IPU: from -50 … +605)

Types of explosion protection

Transmit-receive units 1 Ех d IIC Т6…Т1 Gb О Ех ia IIC Т6… Т1 Ga
IPU 1 Ex db eb ia [ia Ga] T6…T4 IIC Gb X

Electric parameters

Outputs and interfaces – frequency (time period signal TPS)/pulse output;

– analog configurable output, current loop with support of HART;

– RS-485 with support of Modbus RTU and Modbus ASCII;

– Ethernet with support of Modbus TCP;

– analog input for temperature and pressure sensors, current loop with support of HART

Power voltage, V


Input power, W

Not more than 6

Mean time to failure term, h 88 000
Service life, years 15


1) Special designs:

  • High temperature design from – 70 °С to + 330 °С
  • Low temperature design from – 196 °С to + 100 °С

2) Pipe diameter can be increased, at installation of transmit-receive units along the pipe cross section chord line

3) the range can be increased to 1.2 m by request

4) Optionally to 2.5 МPа, 6.3 МPа or 25 МPа

5) with the use of thermal covers -60+60 °С

  • КТМ100 RUS in-process calibration on the operation site
  • No diameter and Flow limitations