Cold Storage System

Custom Design of a Cold Storage Humidifier System

Cold Storage Application

Making use of our extensive experience in the humidification industry, Smart Fog® manufactured this ES100 humidification system. This is used in a cold storage system. The client in question required that a relatively large area, 35,000 sq. ft., be kept between 30° and 40° Fahrenheit, with 98% relative humidity. The water source, in this case, held high levels of silica, requiring water filtration prior to processing through the cold storage system.

Our system design and supply services covered all the components and necessary assembly: temperature and humidity sensors, a power source, and humidifiers. In addition, the control system in this application was a CPLC with an optional air pressure sensor, a 24-VDC power supply, and a backlit LED display for consistent operation.

This humidification system is just one example of our extensive capabilities, which include relative humidity maintenance from 0% to 100%, temperatures from -40° to 140° Fahrenheit, and repeatability within ± 0.1% relative humidity. Most importantly, this particular client was certainly pleased with our work, and so will you. For more information, please contact Smart Fog® today to get details on our full design and equipment services.




Humidifier System for Cold Storage Project Details

Product Description We built this humidification system for a cold storage system application.
Room Size 35,000 square feet
Maintained Temperature 30-40˚F

Relative Humidity Required: 98%
Characteristics: Water Filtration

  • Used because Water Has High Silica Level

Components Used– ES100-2
– CPLC Control
– ES100PB3
– S1 Relative Humidity Sensor
– ZeroTDS 1000 Water Filter System
– Pipe & Fittings Kit

Detailed Specifications: CPLC 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

Application Name: Humidification System for Cold Storage Application

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