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Flow Meter Pressure Gauge Combos: Dual-Parameter Monitoring Skids for Hydraulic Circuits
Quick Answer: Silver Instruments builds flow meter pressure gauge combos as pre-piped dual-parameter monitoring skids for hydraulic circuits. These skids measure flow and pressure at one point. Send us your pressure in bar, temperature in °C, pipe size in DN, and flow range in L/min or kg/h for a quote.
Call Silver Automation Instruments at Tel: +86-25-68650347 or WhatsApp: +86-25-52155837 for a firm price.
What These Skids Include
Here is the thing. A flow meter pressure gauge combo is not just two instruments bolted together. It is a small pipe assembly. You get a flow meter, a pressure gauge or pressure transmitter, isolation valves, and connection points. Some skids also include a PT100 temperature sensor. The pipe size can be DN15, DN20, DN25, or larger. We pre-wire the transmitter for 4-20 mA HART output when needed. This cuts installation time on hydraulic test benches and lubrication skids.
In practice, many hydraulic circuits need flow and pressure data at the same time. Pump output can look fine on pressure alone. But flow may be too low because of internal leakage. A dual-parameter monitoring skid shows both signals side by side. That helps a maintenance team find the problem before a pump failure.
Flow Meter Options for Hydraulic Circuits
Oval gear flow meters work well for hydraulic oil from 1 cP to 1000 cP. They give direct volumetric flow in L/min or GPM. We often supply these with a pressure gauge on the same skid for return line testing.
Coriolis mass flow meters are a better fit when the fluid is expensive or when you need mass flow in kg/h. They also measure density and temperature. You can use them for hydraulic oil blending or fuel feed circuits.
Electromagnetic flow meters fit water glycol hydraulic fluids and cooling water loops. These fluids are conductive. The meter does not add pressure drop. Add a pressure transmitter and you have one skid for fluid monitoring.
Turbine flow meters offer a compact option for clean hydraulic oil from DN10 to DN50. But they need a straight run. Our skid design can include the required upstream and downstream pipe lengths.
Pressure Gauge and Transmitter Choices
You can choose a local display gauge or a pressure transmitter. Local gauges give a simple visual check. Transmitters send a 4-20 mA signal to your PLC or data recorder. We use 316L stainless steel wetted parts for most hydraulic skids. Gauges come in ranges from 0 to 6 bar up to 0 to 400 bar. Tell us your maximum operating pressure and we match the gauge range.
For hazardous areas, we can supply ATEX Zone 1 or Zone 2 pressure transmitters. The flow meter can also be ordered with a suitable body and electrical connections. This matters for offshore cranes and gas processing areas.
Typical Installations We Have Supplied
Last year a customer in Vietnam asked us for a skid on a hydraulic power unit. The circuit used ISO VG 46 oil at 40 °C. Flow range was 5 to 50 L/min. Pressure was 120 bar. We supplied a DN20 oval gear flow meter and a 0 to 250 bar pressure gauge on one stainless steel plate. The customer installed it between the pump outlet and the directional valve.
A hydraulic test bench builder in Malaysia ordered ten units for a factory upgrade. They needed 4-20 mA HART signals from both flow and pressure. The flow meter was an oval gear meter with a pulse output. The pressure transmitter was a flush diaphragm type. Both signals went to a paperless recorder. That gave the maintenance team a simple way to log pump performance.
A mining hydraulic service company in Western Australia ordered a dual-parameter monitoring
Why a Pre-Piped Skid Beats Loose Instruments
Buying separate flow meters and pressure gauges can cause setup errors. You have to match threads, seals, and orientation. A pre-piped skid arrives leak tested. You connect two process lines and the power supply. That is it. Most engineers skip loose assembly when shutdown time matters. On a hydraulic power unit, a bad thread match can cause oil leaks. And oil leaks on a hot pump are a safety problem.
Industries and Fluids
We supply these skids to hydraulic press operators, injection molding plants, steel mills, marine steering gear, and offshore crane hydraulics. Fluids include mineral oil, synthetic ester, water glycol, and biodegradable hydraulic fluids. Pipe sizes go from DN10 to DN100. Flow ranges from 0.2 to 500 L/min. For larger pipes or higher flow, we build a skid with an inline ultrasonic flow meter or a clamp-on ultrasonic flow meter.
Installation Notes
Install the skid in a straight section of pipe. Do not place it right after a pump outlet or a sharp elbow if the flow meter needs a stable profile. For oval gear and turbine meters, watch viscosity and contamination. A strainer upstream protects the meter. We can include a Y strainer in the skid.
Pressure gauge taps should be on the side or top for oil, never at the bottom. This reduces clogging from sludge. Keep the local gauge visible. Put the transmitter output to a PLC or a paperless recorder.
Ordering Data You Need to Prepare
Send us the following details for a fixed price and delivery time.
Fluid name and viscosity in cP
Flow range in L/min or kg/h
Pressure range in bar
Temperature range in °C
Pipe size in DN
Outputs required: local display, pulse, 4-20 mA, or HART
Hazardous area zone if any
Contact Silver Automation Instruments. Tel: +86-25-68650347. WhatsApp: +86-25-52155837. WeChat: +86 15365082610. Tell us your pressure in bar, temperature in °C, pipe size in DN, and flow range. We will propose a flow meter and gauge combination with a dimensional drawing for your skid.
FAQ: Flow Meter Pressure Gauge Combos for Hydraulic Circuits
What flow meter works for hydraulic oil at 200 bar?
Oval gear or Coriolis meters can handle high pressure if the body and flanges are rated correctly. We match the meter pressure rating to your system. For 200 bar, we often use stainless steel oval gear meters with flanged connections.
Can you put a pressure transmitter and a flow meter on one skid without a straight run?
Not always. Some flow meters need straight pipe upstream and downstream. Our skid can include enough straight length in a compact U shape. Send us a photo of your pipe run and we will check.
What output signals do the instruments provide?
We can supply pulse, 4-20 mA, HART, or Modbus RTU. The skid can include a local digital display for both flow and pressure. We also wire the transmitter to a junction box for easy connection.
Can the skid handle water glycol in a hydraulic circuit?
Yes. An electromagnetic flow meter with 316L electrodes works for water glycol. The pressure gauge or transmitter also uses 316L wetted parts. We select seals that are compatible with glycol.
What is the typical delivery time for a small skid?
For a DN15 or DN20 flow meter pressure gauge combo with standard pressure rating, we usually ship in 2 to 3 weeks. Custom flanges, ATEX approval, or high pressure bodies can add 2 to 4 weeks.
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