Reactant Gas Humidifier


  • Reactant gases heated only as necessary to entrain the desired quantity of water vapor
  • Water transfer rates of up to 24 mL/min
  • Easily filled water reservoir and pressurized water inlet
  • Water handling system is compatible with deionized water
  • System compatible with fuel cell backpressures up to 50 psi
  • Reactant gas handling systems are made of 316 stainless steel
  • Designed for ease of diagnostics and maintenance
  • Toxic gas detectors optional
  • Provides temperature control for external heaters such as gas transfer lines (transfer lines not included)
  • System wide control of all Fideris® FCTS equipment using FCPower™ Software (FCPower™ Software is included)


Specifications for the Bubble Humidifier
Evaporators equipped with temperature controlled heaters and gas diffusers
50 psi maximum
100 Watt temperature-controlled heaters
0-10 slpm
Ambient to 115 degrees Celsius (239 degrees Fahrenheit)
75 psi
120 degrees Celsius (248 degrees Fahrenheit). 140 degrees Celsius (284 degrees Fahrenheit) high-temperature option
100 psi
Electrical Requirements
115 or 230 VAC as specified
50/60 Hz
20 Amps at 115 VAC, 16 Amps at 230 VAC
Front Panel Controls and Displays

4-digit LED display

4-digit LED display

4-digit LED display
1/4" Swagelok
3/8" Swagelok

1/4" Swagelok

Mini-type K

IEC-320 C13 outputs operating at same line voltage as the unit, 2 Amps each receptacle
Back Panel Connections
IEC-320 C20 (mating cord provided)
1/4" Swagelok
RS-232 DB9
Molex 39660-1004
Physical Characteristics
27.5" D x 21.5" H x 10" W
97-103 lbs, depending on options
40F to 100F; 85% RH
Back: 6", RH: 2", LH: 4", Top: 0"
4.7 liters (optional)

For high reactant gas flow rates (greater than 10 slpm), please contact us regarding higher power contact humidifiers or our patented Fideris steam injection Gas Humidifiers

Optional Features

  • Internal water pressurization pump allows use from ambient pressure water reservoir
  • Heated transfer lines
  • Gas bypass system
  • High-temperature option
  • Toxic and combustible gas detectors

Typical Applications

  • Fuel Cell Testing
  • Sensor Testing
  • Environmental Chambers
  • Catalyst Testing and Evaluation