Ralston Instruments November 2013
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Ralston Instruments Benchtop Manifolds

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  1. Do you need to calibrate multiple pressure gauges, transducers or switches that are the same pressure range?
  2. Do you need to change between different sizes or types of process connections when calibrating pressure instruments?
  3. Do you need to calibrate large quantities of pressure devices in an environmental chamber?

If the answer is yes to any of these questions then Ralston Instruments has a solution to all of these problems. Our NEW Quick-test benchtop manifolds can be used to calibrate up to 2 or 4 pressure devices simultaneously in pressure ranges of 5000 psi/350 bar with Ralston Quick-test benchtop manifolds or 10,000 psi/700 bar with Quick-test XT benchtop manifolds all without using wrenches or thread tape.

Because they have Quick-test ports you can switch between process connection sizes and types all without a wrench. This design gives you the flexibility to change between multiple sizes of NPT, BSPP, Flare or Metric threads without any tools. Don't need to use all the ports? Simply cap off the ports you don't need with a hand tight cap – no need for an NPT plug in the port.

If you need to calibrate a large quantity of pressure sensors, transducers or pressure gauges in an environmental chamber you can daisy chain these manifolds together using Ralston Quick-test hoses to get the most out of each run of your thermal chamber.

And best of all these products are from Ralston Instruments so you can be assured of high quality products and excellent customer service.

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Tech Tip


Did you know that gas can get trapped in a liquid pressure transmitter? To evacuate the gas first make sure the equalize valve is open. Then open the isolate valves on the transmitter slightly. Then open one of the bleeder screws or vent valves slightly to allow gas to escape until a small amount of liquid comes out, assuming the liquid is not toxic. Then shut the bleeder screw or vent valve. This should purge the system. Then you can bring the transmitter back online by opening the isolate valves fully and closing the equalize valve.

See how our DP Transmitter Adapters make calibrating pressure transmitters a snap

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