Thermoregulation
Thermoregulation
How humid is it?
Temperature control in panel cabinets is important. Too hot or too cold can shorten the life of electrical and electronic equipment creating downtime and costly repairs. Most often a simple filter fan and/or heater with a thermostat is sufficient to balance temperature in the cabinet.
We’ve experienced it – that “wet blanket” feeling when you step outside in the morning or the car door opens welcoming in humid air. The air temperature can be quite low, but that humidity is ever present.
But what to do with that added humid air. Climate plays a large part in panel design and what works in New York may not be the right approach in Texas. Air conditioning is a possibility but due to panel size, budget, or other factors it may not be effective. You cannot ignore it. If left unchecked your closed panel may have a little ‘rain’ over the components.
So how can we balance this?
By sensing not only temperature but also relative humidity. This way we can control fan, panel heater or fan assisted panel heaters in various conditions.
Perhaps the temperature is not warm enough to turn the fan on, however considering the relative humidity we fall below the dew point and now need a panel heater to control condensation.
Solution – Finder 7T Thermo-hygrostat – 7F Filter Fans – 7H Panel Heaters
Control – 7T.51 Thermo-hygrostat
A small form factor at 17.5 mm width, ready to mount on DIN rail. The 10 A, 110 – 240 V AC/DC supply voltage allows wide design integration with a single part number. The easy to use dials offer 4 different sensing options covering various environmental needs.
Functions 7T.51
HT: RH > RHset OR Tamb > Tset
Power is permanently applied to the thermo-hygrostat.
The contact 13-14 closes if the ambient humidity (RH) is > of set humidity (RHset) OR if the ambient temperature (Tamb) is > of set temperature (Tset).
When contact is close, LED is ON
TH: RH > RHset OR Tamb < Tset
Power is permanently applied to the thermo-hygrostat.
The contact 13-14 closes if the ambient humidity (RH) is > of set humidity (RHset) OR if the ambient temperature (Tamb) is < of set temperature (Tset).
When contact is close, LED is ON
HL: RH < RHset
Power is permanently applied to the thermo-hygrostat.
The contact 13-14 closes if the ambient humidity (RH) is < of set humidity (RHset)
When contact is close, LED is ON
HM: RH > RHset
Power is permanently applied to the thermo-hygrostat.
The contact 13-14 closes if the ambient humidity (RH) is > of set humidity (RHset)
When contact is close, LED is ON
Now what does the 7T.51 control?
From the above function charts, designers have flexibility with Finder’s 7T.51 to select from 4 different conditions in one package.
- Humidity greater than set point
- Humidity less than set point
- Humidity greater than OR temp greater than set point
- Humidity greater than OR temp less than set point
Based on the function, the output will control various Finder thermo-regulation products to help get the job done.
7F Filter Fans
- UL Type 12 and UL Type 3R
- Up to 356 CFM
- 4/6/8/10/12 inch size
- Very low acoustic noise
- Power consumption: (4 to 102)W
- Operating voltage:
120 or 230 V AC (50/60 Hz) or 24V DC - Color options: gray RAL 7035 or black RAL 9004; RAL7000 (Type 3R)
7H Panel Heaters
- Heating power 25 – 50 – 100 or 150 W
- Heating power 250 or 400 W fan assisted
- Nominal voltage 110 to 230 V AC/DC, 120 or 230 V AC
- PTC self-regulating heating system
- Aluminum profile encased in a plastic housing
- Clip for 35 mm rail (EN 60715) mount
Applications
7T, 7F, 7H Thermoregulation
Sense – Control – Temperature – Humidity
Book a Finder-15 Video Sales Call to discuss your configuration and thermoregulation products in detail.
