Environment Controlled Laboratory Humidifiers

Custom Design of a Humidifier System for a Environment Controlled Laboratory

Environment-Lab Application


When the silica level in their water supply ran too high, an environmentally-controlled laboratory called on Smart Fog® to help them find the right solution. Our client had a barrel room with a size of 200 square feet, and they needed to maintain a consistent temperature range of 72-75 degrees Fahrenheit with a relative humidity rating of anywhere between 20-80%. With a great deal of experience with assignments such as this, we set about meeting our client’s expectations quickly and accurately.


Our solution to our client’s dilemma was our premium ES100-1 humidification system, capable of humidifying 1,000 square feet up to 99% in any condition. The ES100-1 humidification system includes a veritable arsenal of standard features, including a CPLC control, an ES100PB1, an S1 relative humidity sensor, a ZeroTDS 200 water filter system, and a pipe and fittings kit. The CPLC controller also comes with a standard program that features an optional air pressure sensor.

The PLC control itself is top-of-the-line, coming with 4 analog inputs, 7 transistor outputs, 2 lines x 16 characters, STN LCD, LED backlighting, HMI displays, and a 24 VDC power supply. The S1 sensor features a relative humidity range sensitively of 0 to 100%, a temperature range sensitivity of -40 to 140 degrees Fahrenheit, an accuracy RH of +/- 1%, and response time of 15 seconds or less to any atmospheric change.


Able to produce up to 24 lb/hr of water and work in a temperatures of 50 degrees Fahrenheit and beyond, our ES100-1 humidification system offered a perfect means of maintaining the proper environmental conditions within the lab, providing our customer with a low-maintenance resolution to their humidification problems. For more information, please contact Smart Fog® today to get details on our full design and equipment services.




Environment Controlled Laboratory


Product Description

We built this humidification system for an environment controlled lab.
Room Size200 square feet
Maintained Temperature 72-75˚F
Relative Humidity Required20-80%

CharacteristicsWater Filtration

  • Used because Water Has High Silica Level

Components Used– ES100-1
– CPLC Control
– ES100PB1
– S1 Relative Humidity Sensor
– Zero TDS 200 Water Filter System
– Pipe & Fittings Kit

Detailed SpecificationsCPLC Controller Program included in this solution:  Standard program with optional air pressure sensor.

PLC Control Specifications:

4 Analog inputs, 7 Transistor Outputs, 2 Lines x 16 characters, STN LCD, LED  backlight HMI Displays, 24 VDC power supply.

ES100PB1 Includes: 640 L/min air filter set, 130 mesh screen water filter and air control electric valve.

Relative Humidity Range: 0 to 100% RH
Temperature Range: -40 to 140°F (-40 to 60°C)
Accuracy, RH: ±1 %
Accuracy, Temp Models with 4-20mA Temp. Output: ±0.9°F @ 72°F (±0.3°C @ 25°C)
Accuracy, Temp Models with Passive Thermistor Temp Sensor: ±0.4°F @ 77°F  (±0.22°C @ 25°C)
Hysteresis, RH: ±1%
Repeatability, RH: ±0.1% typical

Temperature Limits: -40 to 140°F (-40 to 60°C)
Storage Temperature: -40 to 176°F (-40 to 80°C)
Compensated Temperature Range, RH: -4 to 140°F (-20 to 60°C)

4-20 mA Loop Powered Models:
Power Requirements: 10-35 VDC
Output Signal: 4-20 mA

0-10 V Output Models
Power Requirements: 15-35 VDC or 15 –29 VAC
Output Signal: 0-10 V @ 5 mA max

0-5 V Output Models:
Power Requirements: 10-35 VDC or 10–29 VAC.
Output Signal: 0-5 V @ 5 mA max

Response Time: 15 seconds

Electrical Connections: Removable screw terminal block
Drift: <1% RH/year
RH Sensor: Capacitance polymer
Temperature Sensor: 4-20 mA Output, Solid State Band Gap. Passive

Output: 10K @ 25°C Thermistor (Dwyer curve A)
Enclosure: ABS

Enclosure Rating: Designed to meet NEMA 3S (IP54)
Weight: 0.3 oz (8.5 g)
Agency Approvals: CE

Industry of UseLaboratory
Application NameEnvironment Controlled Lab Humidification System