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Multi-Tube Units and Mixers - Series 7940 and 7941

The Series 7940 multitube flowmeters are available in either Aluminum or 316 Stainless Steel and in two basic configurations.

  • 7940 Series has four flowmeter tubes with individual outlets to permit the metering of four separate gas streams. It comes complete with four tubes.
  • 7941 Series mixers have three flowmeter tubes and a mixing tube with a single outlet to produce homogenous mixture of three gases to an accuracy of ±10%. The tubes have a single glass float and calibration curves for most common gases are available at no extra cost.
  • All units are back pressure compensated by mounting the control valves on the outlet.
  • All are available with a standard valve cartridge or a high accuracy valve to permit very accurate setting of low flow rates.
  • All units are provided with a bench stand.

Specifications

Connections: 1/8" NPTF or 1/4" tube fitting
Maximum Inlet Pressure: 200 psig
Operating Temperature: 20°F to 250°F
Dimensions: 10"H x 4 1/4" x 1 1/4"D
Shipping Weight: 6 3/4 lbs.

Series 7940    4-Tube Flowmeter* (2 and 3 tube units are available on request)

ModelMaterialValveConnections
A7940 Aluminum Standard 1/8" NPT female
A7940T Aluminum Standard 1/4" compression fitting
A7940HA Aluminum High Accuracy 1/8" NPT female
A7940THA Aluminum High Accuracy 1/4" compression fitting
S7940 316 Stainless Steel Standard 1/8" NPT female
S7940T 316 Stainless Steel Standard 1/4" compression fitting
S7940HA 316 Stainless Steel High Accuracy 1/8" NPT female
S7940THA 316 Stainless Steel High Accuracy 1/4" compression fitting

Series 7941    Mixing Units*

ModelMaterialValveConnections
A7941 Aluminum Standard 1/8" NPT female
A7942T Aluminum Standard 1/4" compression fitting
A7941HA Aluminum High Accuracy 1/8" NPT female
A7941THA Aluminum High Accuracy 1/4" compression fitting
S7941 316 Stainless Steel Standard 1/8" NPT female
S7941T 316 Stainless Steel Standard 1/4" compression fitting
S7941HA 316 Stainless Steel High Accuracy 1/8" NPT female
S7941THA 316 Stainless Steel High Accuracy 1/4" compression fitting

* Specify your choice of Flowmeter tubes from the table on page 53.