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G2 Flow Meter Manual: Flomec Digital Turbine Instrument Calibration and K-Factor Setup Instructions
Quick Answer: The G2 flow meter manual explains how to enter the K-factor on a Flomec digital turbine flow meter. A correct K-factor setup keeps the local rate and totalizer accurate for batching, custody transfer, or water monitoring. Field setup takes about 20 minutes when the pipe is full and the turbine rotor is clean.
At Silver Automation Instruments, we often send this calibration summary to engineers in Southeast Asia, Latin America, and Africa. The Flomec G2 digital turbine instrument is common on diesel skids, raw water lines, and light chemical batching. Typical line sizes run from DN15 up to DN80 on small fuel and water pipes. The setup error we see most often is not a failed sensor. It is a wrong K-factor unit or a wrong decimal point.
Why the K-Factor Setup Matters on a Flomec G2
In practice, the K-factor tells the display how many pulses equal one liter or one gallon. A turbine flow meter generates pulses from the rotor. The electronic display converts those pulses into a flow rate and a totalized volume. If the K-factor value is wrong, the local rate and totalizer are wrong by the same percentage.
Here is a real example from a diesel batch system in Vietnam. The site uses a DN50 G2 meter. The factory K-factor was 46.20 pulses per liter. A technician entered 462.0 by mistake. A 20,000 liter batch day reads 2,000 liters on the totalizer. That can mean large inventory loss over one month. We have seen this pattern many times on customer sites.
What You Need Before K-Factor Entry
Keep the G2 flow meter manual near the panel. You need the factory calibration sheet or the metal tag on the meter neck. You also need a clean turbine rotor, a full pipe, and a known volume reference such as a calibrated weigh bucket or a master meter.
For fuels and light oils, record the liquid temperature. Diesel volume changes with temperature. A 10 °C shift can move volume by roughly 0.9 percent on light fuel. Insert a PT100 temperature probe in the reference bucket for high accuracy tests. Convert the bucket weight to volume at 15 °C first.
The G2 often has a local push button display. Some versions include a 4-20 mA output card. If your panel uses a PLC or a paperless recorder, verify the 20 mA span after the K-factor entry.
Step by Step K-Factor Setup Instructions
First, confirm the area classification. If the G2 sits in an ATEX Zone 1 area, follow the work permit procedure before you open the cover. Switch off the output wiring or put the batching controller in manual mode.
Second, power up the G2 display.
Third, open the setup menu. On most G2 meters, press and hold the right front button for five seconds. The manual calls this the CAL or SET menu. Choose K-FACTOR or K-FCTR.
Fourth, read the K-factor from the tag. Enter the exact decimal. Do not change gallons to liters inside the same value.
Fifth, store the setting and exit. Most engineers skip this final step and then wonder why the display went back to the old value.
After the entry, reset the totalizer. Run a known volume through the meter. Compare the display against the reference. A healthy G2 turbine on a steady liquid should be within 0.5 percent of reading on a normal batch. If the error is larger than 1 percent, stop. Check for air, a damaged rotor, bearing wear, or a K-factor unit mismatch.
Field Verification Without a Prover
Not every plant has a meter prover. Use a weigh bucket or a calibrated tote. Fill the container, note the gross weight, subtract the tare weight, and convert to volume. Then compare that volume with the G2 display.
We helped a paint manufacturer in Southeast Asia check a G2 meter on a DN25 solvent line. The solvent had a viscosity of 2.4 cP. The bucket vol
For water and wastewater, an electromagnetic flow meter can act as a temporary reference. For diesel and light oil, an oval gear flow meter with the correct viscosity range works well as a master meter.
Common Calibration Errors Engineers Make
Wrong unit entry is the top problem. A K-factor in pulses per gallon entered as pulses per liter creates a reading error of 3.785 times. Wrong decimal point is second. Forgetting to store the value is third. Air in the pipe is fourth. A dirty rotor is fifth.
Here is the thing. Always photograph the setup screen before saving. Send the photo with the flow meter tag to your supplier. That simple record helps our support team at Silver Automation Instruments identify the error within minutes. Call +86-25-68650347 or WhatsApp +86-25-52155837 if the reading still drifts.
FAQ: G2 Flow Meter Manual and K-Factor Questions
Q: Where do I find the K-factor on a Flomec G2 digital turbine flow meter?
A: Check the metal tag on the meter neck or the factory calibration sheet. The value is usually expressed in pulses per liter or pulses per gallon.
Q: Can I use the same G2 meter for both water and diesel?
A: Sometimes yes, but verify the K-factor for each liquid and check the pressure drop. Water has a different viscosity and density than diesel. The turbine may need a different K-factor or a different meter size for large flow range changes.
Q: Why does my G2 display show a flow rate but the totalizer does not change?
A: Check whether the totalizer was reset or disabled in the setup menu. Also check the pulse output scaling. The rate comes from frequency. The totalizer follows the same K-factor only when the unit is configured correctly.
Q: What should I send when I ask for a G2 flow meter quote?
A: Send us your pressure in bar, temperature in °C, pipe size in DN, flow range, and liquid type. We will respond with a G2 equivalent or a better process meter option for your application.
Q: Do you stock G2 flow meter spare parts or can you supply a complete meter?
A: We supply complete digital turbine flow meters and replacement sensors for many G2 configurations. Send the model code and the K-factor range. We check availability from our Nanjing warehouse and ship to Southeast Asia, Oceania, the Middle East, Africa, and Latin America.
When a G2 Turbine Meter Is Not the Best Choice
For clean water in DN50 to DN300 pipes with conductivity above 5 µS/cm, an electromagnetic flow meter often has better long-term stability. For diesel custody transfer with very low flow, an oval gear flow meter gives better low-flow repeatability. For gases, a thermal mass flow meter or vortex flow meter is a better choice. For high-value chemical batching where the recipe needs kg/h, a Coriolis mass flow meter is the stronger option. We sell all these instruments. So before you replace a G2, tell us the exact liquid, pressure, temperature, and control signal. We can tell you if the G2 style turbine is still the right fit.
Contact Silver Automation Instruments for G2 Calibration Support
If your G2 flow meter manual is missing or the screen shows a K-factor error, contact our team.
Tel: +86-25-68650347
WhatsApp: +86-25-52155837
WeChat: +86 15365082610
You can also visit our site flow-meter.com.au and search for digital turbine flow meter or oval gear flow meter.
Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. A short WhatsApp message is enough. We will reply with a G2 K-factor setup guide or a quote for a replacement meter.
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