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Hedland Flow Meter Test Kit Outfits: Portable Pressure and Flow Diagnostic Skids for Hydraulics
Quick Answer: Hedland flow meter test kit outfits are portable skids that combine a direct reading flow meter, pressure gauge, needle valve, and temperature port for hydraulic system checks. Silver Automation Instruments supplies equivalent portable diagnostic skids with flow ranges from 0.2 to 150 L/min and pressure ratings up to 420 bar. Send your pressure in bar, temperature in degrees Celsius, pipe size in DN, and flow range to get a quote.
Most hydraulic failures start with two hidden problems. Flow drift and pressure drop. A fixed inline flow meter cannot always catch these faults. The Hedland flow meter test kit approach uses a portable skid. You connect it to a test point. You read flow and pressure at the same time. That reading tells you if a pump is weak, a relief valve is cracked open, or a cylinder is bypassing internally.
What Is a Hedland Flow Meter Test Kit Outfit
Hedland flow meter test kits are diagnostic packages built around a direct reading variable area flow meter. They usually include a pressure gauge, loading valve, temperature sensor, and quick connect fittings. The whole set is mounted on a small frame or skid. Technicians move the skid between machines. This setup is common in hydraulic maintenance for presses, injection molding machines, marine winches, and mining drill rigs.
Silver Instruments supplies similar portable pressure and flow diagnostic skids. Our version uses an oval gear flow meter for hydraulic oil or a turbine flow meter for phosphate ester fluids. The skid can be built with a digital flow display, 4-20 mA HART output, and a paperless recorder. That option gives you a saved record of pump performance.
Why Hydraulic Shops Prefer a Portable Skid
In practice, a fixed test bench is too far from the machine. A handheld flow meter alone does not show pressure loading. The Hedland style test kit solves both. You connect the inlet hose to a pressure test point. You connect the outlet to tank. You open the loading valve slowly. The flow meter reads actual oil flow. The pressure gauge reads resistance. This test shows real pump condition under load.
We have seen this on customer sites in Southeast Asia. A palm oil mill in Indonesia used a portable skid to test a hydraulic power unit on a sterilizer door. The pump was producing only 60 percent of rated flow at 180 bar. The mill replaced the pump before total failure. Downtime was four hours instead of four days.
Typical Parameters for a Hydraulic Diagnostic Skid
Portable hydraulic test kits need to match your system pressure and flow. Most standard units cover 0.5 to 150 L/min. Pressure ratings range from 250 bar to 420 bar. Fluid temperature limits are often 80 to 90 degrees Celsius for standard seals. Port sizes are usually DN10, DN15, DN20, or DN25. Accuracy for the flow meter should be at least plus or minus 1 percent of full scale. The pressure gauge should have a glycerine filled case and a reading accuracy of 1.6 percent or better.
Silver Instruments recommends the following pairing for a hydraulic test skid:
Flow meter: SI-OG oval gear flow meter, range 0.2 to 120 L/min, max pressure 400
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Pressure transmitter: SI-P pressure transmitter, range 0 to 600 bar, accuracy 0.1 percent full scale, G1/4 process connection.
Recorder: SI-R paperless recorder with 6 channels for flow, pressure, and temperature trending.
Hedland Flow Meter Test Kit Outfits vs Fixed Inline Meters
A fixed inline meter only shows one point in the system. The fixed meter will not tell you if a relief valve is bypassing at a different pressure. A portable diagnostic skid lets you move from one test point to another. You can check pump flow at the pump, flow after the directional valve, and case drain flow. That sequence locates internal leakage quickly. Most fixed meters stay in service. The portable kit is for troubleshooting and preventive maintenance.
Industries That Use These Test Kits
Hydraulic systems are found in many heavy industries. Offshore vessels use them for winches and cranes. Mining drill rigs use them for rotation and feed circuits. Plastic injection molding machines use them for clamp and injection units. Steel mills use them for roll gap control. Water and wastewater plants use them for bar screens and sludge presses. Marine repair shops in South America and Africa often buy complete test kits because they service many machine brands.
What to Send for a Quote
Do not send a generic message like we need a flow meter. We need specific values to select the correct skid. Send us your pressure in bar, temperature in degrees Celsius, pipe size in DN, and flow range in L/min. Also tell us the hydraulic fluid type. Mineral oil, phosphate ester, and water glycol need different seals and flow meter materials. We will reply with a budget price, lead time, and freight cost to your port.
Contact Silver Automation Instruments today. Tel: +86-25-68650347. Whatsapp: +86-25-52155837. WeChat: +86 15365082610.
FAQ: Hedland Flow Meter Test Kit Outfits
1. Can Silver Instruments replace a Hedland flow meter test kit?
Yes. We build equivalent portable skids with oval gear flow meters, pressure transmitters, loading valves, and quick connect hoses. The flow range and pressure rating can be matched to the original Hedland unit.
2. What is the maximum pressure for a portable hydraulic diagnostic skid?
Standard skids are rated for 420 bar. We can build special versions for 600 bar if the flow meter body and fittings are rated correctly.
3. Which flow meter is best for hydraulic oil testing?
An oval gear flow meter is best for hydraulic oil because it handles high viscosity and gives direct volume flow. A turbine meter can be used for low viscosity fluids. The choice depends on fluid type and contamination level.
4. Can the skid include a data recorder?
Yes. Silver Instruments can add a paperless recorder with 4-20 mA HART inputs from the flow meter and pressure transmitter. The recorder stores data on a USB drive for maintenance reports.
5. What information do I need to provide for a quote?
Please send pressure in bar, temperature in degrees Celsius, pipe size in DN, flow range in L/min, and hydraulic fluid type. Also include your country and port for freight estimation.
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