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Florida State University BS in Chemical Engineering. YEAR (4TH) Fall Semester 15 Fall Semester 16 Fall Semester 14 Fall Semester 16 CHM 1045 - Gen Chemistry I 3 ECH 3023 - Mass & Energy Bal I 3 ECH 3101 - Thermodynamics 3 ECH 4404L - Unit Ops Lab 3. Transport Phen Lab 3 ECH 4323 - Process Control 3 CHM 1046L - Gen Chem II Lab 1 ECH 3301.
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Shipping Weight 1.2 lbs.
Country of Origin Mexico Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More
Product Details
Line voltage thermostat features a liquid crystal display to provide you with a constant readout of the sensed temperature, and refrigeration display error codes to alert you to any problems. Includes keypad lockout, settings memory, and time delay on power up. UL Listed and CSA Certified.
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Technical Specs
ItemElectronic Temperature Control
Switch TypeSPDT
Switch ActionOpen/Close on Rise
Voltage Range120/208/240VAC
Control Range-30 Degrees to 220 Degrees F
Differential1 Degrees to 30 Degrees F
Number of Relay Inputs1
Number of Relay Outputs1
Full Load Amps @ 120VAC16A (NO), 5.8A (NC)
Full Load Amps @ 240VAC8A (NO), 2.9A (NC)
Sensor TypeThermistor
Sensing Bulb Dia.1/4'
Sensing Bulb Length2'
Enclosure TypeNEMA 1
Height6-1/2'
Width2-3/4'
Depth2-1/2'
ColorGray
StandardsUL Listed and CSA Certified
Display TypeLCD
Includes8 ft. Cable
For Use WithHeating, Cooling, Refrigeration
Compliance and Restrictions
Documentation
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Customer Reviews
Rated 4 out of 5 by Maine1 from Slightly larger than I expected, but very easy to install and program.
Rated 3 out of 5 by DMort from Easy to install, accurate control. Only some units I have had to replace after 1 year. Jury is still out on how durable they are.
Rated 5 out of 5 by Workinghard from Easy to install and user friendly. Good Thermostat for just about any project where temperature control is an absolute for maintaining precise monitoring and control of devices.
Rated 4 out of 5 by KL016240 from Installation was straight forward and programming was very easy.I did not see a warranty attached so that leaves me wondering...
Rated 4 out of 5 by Myrdin25 from Cheap and Easy to useReady to use out of the box and anyone can set it up (don't need controls specialist to do it). They are relatively cheap and Rencor offers many different options to fit your needs. I have found that I have had to replace three controllers out of five in the last two years. The units they are in are only five years old now.
Rated 5 out of 5 by Willie57 from I'd be tempted to use one in my houseExcellent stat. I have 12 of them in service right now, some for over seven years and haven't had to replace any.They are used in high humidly and sometimes direct water spray environments without a glitch. As much as I like Grainger, look around, you might find a better price.
Rated 4 out of 5 by Fishguy from This product performs swimmingly.This product is easy to install and performs well to control temperature.
Rated 5 out of 5 by Servicar64 from Easy to program and they last a long time.We have been using these units for 5 years and only had to replace one because an operator hit it with a fork truck.
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ppm - parts per million - commonly used as a unit of concentration
Parts per million - ppm - is commonly used as a dimensionless measure of small levels (concentrations) of pollutants in air, water, body fluids, etc.
Parts per million is the molar mass, volume or mass ratio between the pollutant component and the solution. ppm is defined as
ppm = 1,000,000 c / s
= 106c / s (1)
where
c = molar mass, volume or mass of component (mole, m3, ft3, kg, lbm)
s = molar mass, volume or mass of solution (mole, m3, ft3, kg, lbm)
In the metric system ppm for mass can be expressed in terms of milligram versus kg where
1 mg/kg = 1 part per million
ppm can be also be expressed as
1 ppm = 10-6 = 0.0001 % = 0.001 ‰
1 000 ppm = 0.1 %
10 000 ppm = 1%
Alternatively - mass related units to measure very small concentration levels:
ppb - parts per billion (1 / 1,000,000,000 or 10-9)
ppt - parts per trillion (1 / 1,000,000,000,000 or 10-12)
ppq - parts per quadrillion (1 / 1,000,000,000,000,000 or 10-15)
An alternatively mass related unit to measure larger concentration levels is weight percent which can be expressed as
weight percent = 100 mc / ms (2)
ppm vs. Mass per Unit Volume
The concentration of a component can be measured as mass per unit volume - like mg/liter, mg/cm3 etc.
Weight of substance added to one unit volume of water to give one part per million (ppm)
1 ppm
= 2.72 pounds per acre-foot
= 1,233 grams per acre-foot
= 1.233 kilograms per acre-foot
= 0.0283 grams per cubic foot
= 0.0000624 pounds per cubic foot
= 0.0038 grams per US gallon
= 0.058419 grains per US gallon
= 0.07016 grains per Imperial gallon
= 1 milligram per liter (mg/L)
= 1 microlitre ( μL ) per liter
= 0.001 gram per litre
= 8.345 pounds per million gallons of water
Example - Volume Concentration of Carbon Dioxide in Air
The concentration of carbon dioxide in air is aprox. 400 ppm. The volume of carbon dioxide in one 1 m3 of air can be calculated by modifying (1) to
c = ppm s / 106
= (400 ppm) (1 m3) / 106
= 0.0004 m3/m3
Percent by Volume
Volume percent can be expressed as volume per unit volume:
percent by volume = 100 vc /(vc + vs) (3)
where
vc = volume component
vs = volume solvent
Molarity
Molarity is the number of moles of solute (substance of interest - pollution, etc.) dissolved in one liter (volume) of the solution.
Molality
Molality is the number moles of solute divided by kilograms of solvent.
Related Topics
Basics - The SI-system, unit converters, physical constants, drawing scales and more
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Diffusion Coefficients of Gases in Water - Diffusion flux [kg/m2s] tells how fast a substanse solved in another substance flows due to concentration gradients. Diffusion constants [m2/s] are given for several gases in water
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