KC-2610 GI(IP67) KC-2620-Ex(IP66) PDF download
Thermal type mass flow meter professional manufacturing company "Golden rule" | Korea's first patented thermal mass flowmeter

Golden Rules Company
Golden Rules Co., Ltd. specializes in the manufacture of thermal mass flowmeters for gas, liquid, oil and steam, based on 27 years of experience in the field and accumulated German technology. In order to improve the reliability of the calibration and the quality of the products required by the characteristics of the thermal mass flowmeter, only the mass flow sensor element which is manufactured precisely is imported, and all the other parts have been selling the domestic products developed with their own technology at competitive prices. In 2016, we have passed the stringent quality standards required for delivery to KOGAS. We have begun to broaden our business area with petrochemicals while proving product quality. The thermal mass flowmeter manufactured by Golden Roll Co., Ltd. is the first in Korea to be patented and is undergoing NEP certification. Procurement is an excellent product that provides all the input / output specifications and accurate flow information that the user needs. While the gas has gained the customer's trust, it has improved the quality of the liquid and oil which have already been used in advanced countries such as Germany for decades ago. We will develop steam for the first half of 2018 after finishing our efforts in time.

What is a thermal mass flow meter?
The Mass Flow Sensor consists of two sensors. One is a flow rate sensor and the other is a temperature sensor that automatically corrects for changes in gas temperature. The new device consists of two temperature platinum resistors on one chip. A high ohmic resistor is used to measure the reference temperature, while a low ohmic resistor is used as the heater. By using a bridge circuit, these resistors allow different heating values ​​of the two devices to have different resistance values. Self-heating depends on supply voltage, mass flow, and the medium in which the sensor is located. Higher voltage increases self-heating, and higher flow increases cooling. If self-heating is consistently maintained by a suitable controller, the voltage will increase with the high flow rate, so the mass flow can be measured. The KC-2610 and KC-2620EX models manufactured by Golden Rule are state-of-the-art thermal mass flowmeters with state-of-the-art technology and are used for flow measurement of general gas, water, water, sewage, oil and chemical liquids. When installed on site, it maintains 0.5% accuracy. Compared to other manufacturers' products, they are available at a lower cost and have fewer optional features. In addition, setting is easy and A / S can go faster than import.

Thermal Mass Flow Meter Overview
Typical flowmeters are used to measure volumetric flow rates. However, this volumetric flow rate changes as the temperature and pressure of the fluid change. Particularly, when the measuring fluid is a compressible fluid or gas, the degree of variation thereof is very high. To convert this volume flow to mass flow, you can measure the density based on the temperature and pressure of the measuring fluid. By multiplying this by the volume flow rate, the mass flow rate can be obtained. Particularly in the case of gas, compensation for temperature and pressure alone is not enough. This is the case where the temperature is very high or the pressure is very high, which is not enough with temperature and pressure compensation alone, and it is often necessary to compensate for the so-called compression coefficient and the z value. It is very troublesome to obtain the mass flow rate by measuring the volume flow rate and measuring the temperature and pressure. Therefore, it is very convenient to omit the above-mentioned series of processes and directly obtain the mass flow rate. The direct method of obtaining the mass flow rate is usually compressed in two ways: a coriolis mass flow meter for liquids and gases, and a thermal mass flow meter for gases and liquids. Today, there is a rapid increase in the use of mass flow meters for accurate gas flow measurement in various industries. Because current operation cost is needed to be reduced, we are meeting customer requirements with process simplification, accuracy and low price. In the industrial field, gas is also spreading more and more like mass flowmeter of gas (oxygen, hydrogen, nitrogen, argon, propane, air, city gas, etc.) like liquid mass flowmeter. The thermal mass flowmeter manufactured by Golden Rule Co., Ltd. will be able to contribute to and contribute to the development of the industrial field by not only energy saving but also accurate flow measurement.

Typical base price of thermal type mass flowmeter is selected as general / insert type: 3.4 million won + option, explosion type / insert type: 4.60 million + option.
  • Close loop control
  • Power AC100~250V & DC24V(Standard)
  • Output accuracy ±0.1%, ±2.5㎂(4-20㎃) & Pulse
  • Field validation of flow meter calibration settings
  • Smart program interface(RS-485 Standard)
  • Direct mass flow monitoring eliminates need for temperature and pressure compensation
  • Simple signal Processing&calibration
  • Excellent reproducibility
  • Excellent long-term stability
  • Best price-perfomance ratio
  • Easy adaptable for different application or into housings
  • No mechanical moved components
  • Greatly reduces upstream piping requirements(7D-5D)
  • One-second response to changes in flow rate
  • CE, Ex
Golden Rules' KC-2600GI Smart insertion mass flowmeter accommodates the change measurement requirements and instrument-validation demands of inclustrial gas flow monitoring installations. The versatile microprocessor-based transmitter integrates the functions of flow measurement, flow-range adjustment, meter validation and diagnostics, in either a probe-mounted or remote housing. Mass flow rate and totalized flow, as well as other configuration variables are displayed on the meter's opitional 2x16 LCD panel. The programmable transmitter is easily configured via an RS-485 communication port and Golden Rules Smart interface software, or via the display and magnetic switches in the instrument panel. The Golden Rules KC-2600GI allows you to configure or change the following password protected parameters:flow rang, totalize, time response, low flow cutoff and a calibration corection factor that compensates for flow profile flow variations. Golden Rules's Smart interface software guides you through a procedure to fully validate instrument performance. The meter is available with avarety of input signal, mounting and packaging option.
Operating Specifications
Most gases compatible with 303 stainless steel

Gas Pressure(2limitations)
Compression fittings: 508psig (35barg) option
150lb flange, JIS 10K RF PN16(DN) : -40℉~150℉(-40℃~65℃) / 230psig(16barg)
Low Retract valve : 100psig(7barg)
High Retract value : 1000psig(70barg)

Pressure Drop
eligible for popes three inches in diameter or larger

Gas&Ambient Temperature
option -76℉~752℉(-60℃~400℃)

Leak Integrity
5×10-4atm cc/sec of helium maximum

Power Requirements(selection)
DC24V ±10%, 200mA
100~240VAC ±10%, 10watts

Output Signal(standard)
Linear 4~20mA, Pulse, 0~5V, Alarm

Alphanumeric 2×16 backlight LCD
Adjustable variables via on-board switches(password protected) or Smart interface software
Adjustable: Full scale(0~100%) / flow:m3/h(m3), L/h(L), mL/h(mL), kg/h(kg) / Time Response(1~7seconds) / Correction factor setting(0.5~5) / Zero & span

Seven digits(9,999,999,999 Count) in engineering units Reset table by software, on-board switches

Smart interface Windows® -based software 8MB of RAM, prefereed 16MB of RAM RS-485 communication
Additional features: Zero cut-off adjustment / Linearization adjustment / Save / Load configuration / Flow meter validation
Performance Specifications
Accuracy of Point Velocity
±2% or reading from 10 to 100% of calibrated range
±0.5% of full scale below 10% of calibrated range

±0.2% of full scale

Temperature Coefficient
±0.03% of reading per ℃ within ±10~38℃ of customer specified conditions
±0.06% of reading per ℃ within ±25~50℃ of customer specified conditions

Pressure Coefficient
±0.02% per psi for air, consult factory for other gases

Response Time
One second 63% of final velocity value

Measuring Range
0.01 to max 66m/sec

Physical Specifications
Wetted Materials
sensor proble - cermaic+303ss(Platinum)
protection tube - 303ss(option:316ss,316L)

Hazardous-Area Enclosure CASE(Ex d[ib] ⅡC T4 : IP66) or Hazardous-Area Enclosure (IP67 또는 IP65)

Electrical Connections
2×1/2" NPT 또는 Exp Cable Gland(ss) 22c

3/4-inch tube compression fitting with 3/4-inch male NPT(std)
ANSI 150lb flange, JIS 10K RF Flange(option)
3/4-inch tube compression fitting with 1-inch male NPT(option)
Ball valve system(option)

Ex(Ex d[ib] ⅡC T4)
KOSHA Certificate
KGS Certificate
Dimensional Specifications & chart
Dimensional Specifications & chart2
Dimensional Specifications ≠ chart3
Low Pressure Ball Valve imensional Specifications
All dimensions are inches, Millimeters are in parentheses.
All drawings save a ±0.25inch(6.4mm) tderance. Certified drawings and available be on request.
Up&Downstream Requirements
Select an installation ste that minimize possible distortion in the flow profile, Valves, elbows, control valves and other piping components may cause fbw disturbances. Check your specific piping condition against the examples shown below. in order to achieve accurale and repeatable performance install the flow meter using the recommended number of straight run pipe diameters upstream and downstream of the sensor.
Order Code - KC-2600 GI Series (Gas Insertion Type)
Type Code1
IP67 or IP65 10 GI
Hazardous-Area Location Enclosure 20 EX
Agency approved, customer specified 30

Insert Length4 Code2,3
6 - inch(15cm) 06
9 - inch(23cm) 09
12 - inch(30cm) 12
18 - inch(46cm) 18
24 - inch(61cm) 24
36 - inch(92cm) 36
Special Length (in)
Probe with 2-inch JIS 10K RF Range (in)-M5
High Pressure with Retractor valve (in)-M9
Agency approved, customer sprecified WW

Mounting Code4,5
None 0
Compression Fitting2
(3/4-inch tube X3/4-inch Male NPT)
Thread let(3/4-inch Female NPT)
Specify pipe O.D. in parertheses
Compression Fittings(IP67)
(1/2-inch tube X 3/4-inch Male NPT)
Curved Duct Bracket(3/4-inch tube compression Fitting)
Specify duct O.D. in parentheses
Low Pressure Retract Valve
Specify duct O.D. in parentheses
Compression Fittings
(3/4-inch tube X 1-inch Male NPT)
Agency approved, customer specified WW

Enclosure5 Code6,7
Hazardous-Area Location Enclosure 2
Remote Hazardous-Area Location
Endosure(only with Ex Meter)
Remote Hazardous-Area Location
Endosure with Junction Box
IP67 or IP65 N2
Remote IP67 with Junction Box N4(Ft)
Agency approved, customer specified WW
Input Power Code8
DC24V ±10%, 200mA 2
AC100~240V ±10%(option) 3
Agency approved, customer sprecified W

Output Code9
RS-485S(RS-232C) 1
Pulse, Alarm 3
DC4~20mA, 0~5V, DC 4
Agency approved, customer sprecified W

Display Code10
No Readout NR
Digital Display DD
Agency approved, custormer specified WW

Fbw Direction Code11
Horizontal Free, or Vertical up 1
Horizontal Free, or Vertical down 2
Agency approved, custormer specified W

Calibration19 Code12
Srandard calibration A
Air, only for 3inch and large pipe size
Compressed Air, only for 3inch and large pipe sizes D
Customer Calibration B
Air equivalency(digester gas,flue,etc) C
Nitrogen,helium,argon,carbondioxide compressed air or digester gas E
Hydrocarbons(natural gas,methan,ethane,propane,etc) F
Hydrogen or hydrogen mixture G
Agency approved,customer sprecified W
Calibration29 Code13
70℉(21℃) 14.7psig(1.103bar) A
32℉(0℃) 14.7psig(1.103bar) B
Agency approved, customer sprecified W

Pressure Code14
Low Pressure 43psig(3bar) Max L
Medium Pressure 145psig(10bar) Max M
High pressure 725psig(50bar) Max H(option)

Option Code15
Agency approved, customer sprecified W

1. Flange is tapped and threaded on the compression fitting.
2. Material matches he selection in box 2. Metal ferrle permanetly locks after tightening compression fitting.
3. Flange must be ANSI or DIN specification.
4. Maximum length is 60-inch(1524mm)
5. Enclosure required for agency approvals, T6 rate at 104℉(40℃)
6. Wire resistance must be less than 8chms
7. Turndown ration is 100:1 minimum and 1000:1 maximum
8. SFPS is the abbreviation for standard feet per second at 14.7psia(1.01bar(a)&70℉(21.1℃))
9. Customer specified calibration must not exeed temperature & pressur limitations of the 2600GI, 2600GF Series products specifications