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DryCal DC Lite Primary Flow Meter: Laboratory Gas Reference Metrology Masters
Quick Answer: The DryCal DC Lite is a primary gas flow calibrator for laboratory reference work. It covers low flow gas ranges with direct volume displacement, so calibration does not depend on a secondary standard. Silver Instruments quotes these units for metrology labs, gas analyzer teams, and process plants that need traceable flow references.
What Is the DryCal DC Lite
The DryCal DC Lite is a portable primary flow meter from the DryCal family. The device uses a piston based positive displacement cell to measure gas volume and time the piston travel. That raw volume over time gives a direct flow reading, not a derived signal from a thermal sensor or a differential pressure element.
Because the measurement principle is primary, the unit is often used as a laboratory gas reference master. Many calibration benches in Thailand, Indonesia, Vietnam, and Mexico use this type of device to check mass flow controllers, rotameters, and gas analyzers before shipment or after repair.
Flow Range and Typical Specs
The DC Lite accepts interchangeable flow cells. Common working ranges run from 0.5 sccm to 30 slpm depending on the cell selected. Accuracy is typically better than 0.5 percent of reading at standard conditions. The built in pressure and temperature compensation converts volume flow to mass flow for air, nitrogen, oxygen, and other gases.
We often specify the low flow cell for gas chromatography and stack testing. The mid range cell fits most mass flow controller calibration loops. Tell us your minimum and maximum sccm or slpm before ordering. The cell choice is the part that decides whether the unit matches your reference protocol.
Why This Device Works as a Reference Master
Most labs do not need a 50 000 USD flow standard for every bench. The DC Lite gives a small footprint, short stabilization time, and direct traceability to length and time. That design suits daily calibration work without heavy temperature controlled infrastructure.
In practice, a lab manager uses the device to verify a mass flow controller at 5 sccm, 10 sccm, and 20 sccm. The reading is volume flow at standard conditions. The lab then adjusts the device under test or writes the correction factor in the certificate. This is a normal process in environmental monitoring and petrochemical laboratories.
Primary Flow Meter or Transfer Standard
Some labs confuse a primary flow meter with a secondary transfer standard. A primary device directly links the measurement to physical dimensions and time. A transfer standard is calibrated against a primary device and is used for routine process checks.
The DryCal DC Lite is used on the bench as the primary reference. It is not a clamp on or inline meter for harsh process lines. That distinction matters when you write a calibration procedure for ISO 17025 or a plant quality manual.
Gas Compatibility and Installation Factors
The DC Lite works with non aggressive gases. Air, nitrogen, oxygen, carbon dioxide, and methane are common. For reactive or corrosive gases, use a secondary diaphragm or thermal meter. Do not put wet gas into the piston cell unless the lab protocol allows it.
Pressure and temperature matter. The device has internal sensors, but you should record ambient pressure with a separate barometer if your SOP requires it. Keep the unit level on the bench. Keep the piston cell clean. Dust and oil vapor from a plant air line will change the p
Most engineers skip this part until a rotameter reading drifts. A small leak in the tubing or a dirty cell is often the root cause. Charge the line with nitrogen, close the outlet, and watch for pressure drop before each calibration batch.
Calibration Scenarios We See on Customer Sites
Last year a water treatment laboratory in Vietnam asked us for a dry gas flow reference to check rotameters on chlorine injection skids. They use nitrogen at 200 sccm to 2 slpm. The DC Lite with a mid range cell met that range. It replaced a soap film meter that was slow and less repeatable in a humid room.
A paint manufacturer in Southeast Asia uses the DC Lite to check purge air flow on solvent storage tanks. They calibrate thermal mass flow meters in the range of 100 sccm to 5 slpm. The lab stores the unit in a clean cabinet and runs a leak check every Monday before production starts.
A mass flow controller normally sends a 4-20 mA HART signal to a PLC. Before that loop is trusted, the lab checks the actual gas flow against the DryCal DC Lite. The calibration sheet then records the deviation at 25 percent, 50 percent, and 100 percent of span.
How to Specify a Laboratory Gas Flow Standard
Send us the gas type, the minimum and maximum flow in sccm or slpm, the operating pressure in bar, the room temperature in °C, and your target accuracy. We will match the correct DryCal DC Lite cell and confirm whether the unit fits your existing calibration manifold.
For typical laboratory work, specify whether you need mass flow or volume flow display. State which gas list is active. If your reference protocol requires ISO 17025 traceability, we can also discuss calibration certificates and supply options for third party verification.
Silver Instruments Supply and Support
Silver Automation Instruments supplies flow measurement devices for oil and gas, water and wastewater, chemical, food and beverage, and marine applications. Our customers are mostly industrial end users and distributors with 10 to 100 people. We ship to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
For a quotation or technical check, contact Silver Instruments at Tel: +86-25-68650347, Whatsapp: +86-25-52155837, or WeChat: +86 15365082610. Send your pressure in bar, temperature in °C, pipe size in DN, and flow range. We will reply with the model, lead time, and shipping cost for your destination port.
Frequently Asked Questions
Is the DryCal DC Lite a primary flow meter?
Yes. The unit uses direct volume displacement and time measurement, so it works as a primary reference for many low flow gas calibration tasks.
What flow range does the DC Lite cover?
The range depends on the flow cell. Common cells cover 0.5 sccm up to 30 slpm. Confirm your minimum and maximum flow with Silver Instruments before ordering.
Can the DC Lite measure liquid flow?
No. This device is for gas flow only. For liquid reference meters, we can quote a separate positive displacement or Coriolis master.
What gas types are supported?
Clean non aggressive gases like air, nitrogen, oxygen, carbon dioxide, and methane are typical. Avoid wet, dirty, or corrosive gas unless the cell material and seals are confirmed.
How do I get a price for the DryCal DC Lite?
Send your gas type, flow range in sccm or slpm, pressure in bar, and temperature in °C to Silver Instruments. We will provide a quotation with freight options.
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