Canadian Dollars
Guaranteed Fitment
Always the correct part
have questions?
Always the correct part
We know our products
Fast & Reliable
Incorporated with an advanced U-shaped tube sensor, this controller is constructed of aluminum and brass for non-corrosive gases or 316 stainless steel for corrosive applications. In addition, this controller has a built-in electromagnetic valve that allows the flow to be set to any flow rate within the range.
Features
Principles of operation
Metered gases are divided into two laminar flow paths, one through the primary flow conduit, and the other through a capillary sensor tube. Both flow conduits are designed to ensure laminar flows and therefore the ratio of their flow rates is constant.
Two precision temperature sensing windings on the sensor tube are heated, and when flow takes place, gas carries heat from the upstream to the downstream windings. The resultant temperature differential is proportional to the change in resistance of the sensor windings.
A wheatstone bridge design is used to monitor the temperature dependent resistance gradient on the sensor windings which is linearly proportional to the instantaneous rate of flow.
Output signals of 0 to 5 V DC and 4 to 20 mA are generated indicating mass molecular based flow rates of the metered gas. The combined gas streams flow through a proportionating electromagnetic valve with an appropriately selected orifice. The closed loop control circuit continuously monitors the mass flow output and maintains it at the set flow rate.
Flow rates are unaffected by temperature and pressure variations within stated limitations.
Applications
| Accuracy | ±1% of full scale |
| Calibration | Performed at standard conditions [14.7 psia (101.4 kPa) and 70°F (21.1°C)] unless otherwise requested |
| Repeatability | ±0.5% of full scale |
| Response Time | 300 ms time constantApproximately 1 second to within ±2% of set flow rate for 25% to 100% of full scale flow |
| Coefficient | Temperature 0.15% of full scale/°CPressure: 0.01% of full scale/psi (0.07 bar) |
| Gas Pressure | Optimum: 25 psig (1.73 bar)Maximum: 1000 psig (70 bar) |
| Turn Down Ratio | 40:1 |
| Maximum Pressure Difference | 50 psi (3.4 bar) |
| Gas and Ambient Temperature | 32 to 122°F (0 to 50°C) |
| Leak Integrity | 1 x 10 to 9 smL/second of helium maximum to the outside environment |
| Materials Fluid Contact | Anodized aluminum, 316 stainless steel, brass & Viton O to rings |
| Attitude Sensitivity | No greater than ±15° rotation from horizontal to vertical |
| Signals | Output:Linear 0 to 5 V DC (1000 Ω minimum load impedance)4 to 20 mA (0 to 500 Ω loop resistance)Maximum noise ±20 mVCommand Signals:Analog 0 to 5 V DC4 to 20 mA for remote set point modeNPN compatible purge/valve off |
| Connections | ¼" (0.635 cm) compression fittings Tube O diameter |
| Transducer Input Power | Universal +12 V DC to 26 V DC, 650 mA maximum |
| Circuit Protection | Circuit boards have built-in polarity reversal protectionResettable fuses provide power input protection |
| Display | 3½ digit LCD0.5" (1.27 cm) high characters |
| CE Compliant | EN 55011 class 1, class B; EN50082-1 |
| Dimensions | 5.72 x 6.29 x 1" (14.53 x 15.98 x 2.54 cm) |
All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
We can ship to both US and Canada. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will charge a flat rate shipping for your items.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Not Applicable
| Condition: | NA |
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
