Anyi Digital Protractor (451-101 Series) Inclinometer by Lagunastar Industries Company

EDSYN EZP-01 Easy Probe Tweezers

Easy Probe Tweezers

EDSYN EZP-01

UC 60N- Ultrasonic Cutter

Calibrating Digital Hygrometer by Salt Test Method

A guide to calibrating a digital hygrometer using the salt test method

It’s always a good idea to check the accuracy of your hygrometer. You can use the Salt Test method on both digital and analog hygrometers. Most hygrometers today can either be adjusted or calibrated to an accurate reading. The salt test method won’t fail you, and it’s very easy to do.

MATERIALS NEEDED:

- Small sandwich ziplock baggy
- Bottle cap from 2 liter soda bottle (works best)
- Table salt
- Hygrometer (whichever one you want to test, digital or analog)

Now that you have all of your materials handy, follow these steps and you’ll be on your way to effectively checking the accuracy of your hygrometer.

STEP 1:

Fill bottle cap with standard table salt; fill about 3/4 of the way up.

STEP 2:

Add tap water to the bottle cap to saturate the salt. If you see water floating on top of the salt, you’ve added too much water. Easy fix for this is to grab a paper towel, and soak up all of the excess water. You want more of a slurry consistency of water and salt. Again, if you see water actually floating on top of the salt, soak up the excess with a paper towel.

STEP 3:

Place both hygrometer and bottle cap (with salt/water mixture) inside of a small ziplock baggy, as pictured above. Wait 4 hours and come back for a reading check.

STEP 4:

If your hygrometer is perfectly accurate, it will read 75%. Most hygrometers will be +/- 3 %. If your hygrometer is digital and has a calibration button, follow the directions that it came with to calibrate to 75%. Digital hygrometers have a calibration button you push, while analog hygrometers have a screw which allows you to adjust the needle accordingly.

If your hygrometer is not adjustable, you’ll just have to make a note and remember how far off it is.

That’s all there is to it!

You’ve just calibrated/tested your hygrometer using the famous Salt Test Method.

==================================================

notes:

1. source = http://www.cigarpass.com/index.php/salt-test-calibrate-hygrometer.html

2. TO BUY DIGITAL THERMOHYGROMETER- PLS CLICK THIS SITE:

http://soldering102.blogspot.com/search/label/ThermoHygrometer , we have 6 models to choose from

Electrical Plug Code

Reference =Goot Japan Website

Relative Humidity

Relative humidity is a term used to describe the amount of water vapor that exists in a gaseous mixture of air and water vapor.

The relative humidity $\left(\phi\right)$ of an air-water mixture is defined as the ratio of the partial pressure of water vapor $\left({e_w}\right)$ in the mixture to the saturated vapor pressure of water $\left({{e^*}_w}\right)$ at a prescribed temperature.

Relative humidity is normally expressed as a percentage and is calculated by using the following equation:^[1]

$\phi = {{e_w} \over {{e^*}_w}} \times 100%$

Humans are very sensitive to humidity, as the skin relies on the air to get rid of moisture. The process of sweating is your body's attempt to keep cool and maintain its current temperature. If the air is at 100-percent relative humidity, sweat will not evaporate into the air. As a result, we feel much hotter than the actual temperature when the relative humidity is high. If the relative humidity is low, we can feel much cooler than the actual temperature because our sweat evaporates easily, cooling us off. For example, if the air temperature is 75 degrees Fahrenheit (24 degrees Celsius) and the relative humidity is zero percent, the air temperature feels like 69 degrees Fahrenheit (21 C) to our bodies. If the air temperature is 75 degrees Fahrenheit (24 C) and the relative humidity is 100 percent, we feel like it's 80 degrees (27 C) out.

People tend to feel most comfortable at a relative humidity of about 45 percent.Humidifiers and dehumidifiers help to keep indoor humidity at a comfortable level.

Buildings

When controlling the climate in buildings using HVAC systems the key is to control the relative humidity in a comfortable range - low enough to be comfortable but high enough to avoid problems associated with very dry air.

When the temperature is high and the relative humidity is low, evaporation of water is rapid; soil dries, wet clothes hung on a line or rack dry quickly, and perspiration readily evaporates from the skin. Wooden furniture can shrink causing the paint that covers these surfaces to fracture.

When the temperature is high and the relative humidity is high, evaporation of water is slow. When relative humidity approaches 100 percent, condensation can occur on surfaces, leading to problems with mold, corrosion, decay, and other moisture-related deterioration.

Certain production and technical processes and treatments in factories, laboratories, hospitals and other facilities require specific relative humidity levels to be maintained using humidifiers, dehumidifiers and associated control systems.

What is the ideal humidity for electronics?

The `ideal' humidity would be very low, simply because humidity lends itself to corrosion of the circuit boards and connectors. When humidity reaches a higher level, items such as rusting of any of the steel components, corrosion of the circuit boards and connections tend to deteriorate.

So unless you're in a sealed chamber where humidity can be controlled, you might want to consider things like room dehumidifiers or even central air conditioning in the summer to help control the humidity levels. In the winter months, humidity tens to be less in the colder climates and that's part of the reason that humidifiers are installed on furnace systems among other things. Humidity control is more for `creature comfort' than anything else.

But this leads to another problem, which is static electricity when the humidity is too low.That too, can be bad for circuit boards because a static discharge can reach potentials of several thousand volts.

According to CompTIA A+, a safe humidity is between 50 and 80 percent.

Read more: http://wiki.answers.com/Q/What_is_the_ideal_humidity_for_electronics#ixzz1E0kmT3DA

references:
1. wikipedia
2. http://science.howstuffworks.com/dictionary/meteorological-terms/question651.htm
3. http://wiki.answers.com/Q/What_is_the_ideal_humidity_for_electronics

EMISSIVITY OF COMMON METALS

Note: Because the emissivity of a given material will vary with temperature and surface finish, the value in these tables should be used only as a guide for relative or differential temperature measurements. The exact emissivity of a material should be determined when high accuracy is required.

METALS
MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Alloys
20-Ni, 24-CR, 55-FE, Oxidized	392 (200)	.90
20-Ni, 24-CR, 55-FE, Oxidized	932 (500)	.97
60-Ni, 12-CR, 28-FE, Oxidized	518 (270)	.89
60-Ni, 12-CR, 28-FE, Oxidized	1040 (560)	.82
80-Ni, 20-CR, Oxidized	212 (100)	.87
80-Ni, 20-CR, Oxidized	1112 (600)	.87
80-Ni, 20-CR, Oxidized	2372 (1300)	.89

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Aluminium
Unoxidized	77 (25)	.02
Unoxidized	212 (100)	.03
Unoxidized	932 (500)	.06
Oxidized	390 (199)	.11
Oxidized	1110 (599)	.19
Oxidized at 1110¡F (599¡C)	390 (199)	.11
Oxidized at 1110¡F (599¡C)	1110 (599)	.19
Heavily Oxidized	200 (93)	.20
Heavily Oxidized	940 (504)	.31
Highly Polished	212 (100)	.09
Roughly Polished	212 (100)	.18
Commercial Sheet	212 (100)	.09
Highly Polished Plate	440 (227)	.04
Highly Polished Plate	1070 (577)	.06
Bright Rolled Plate	338 (170)	.04
Bright Rolled Plate	932 (500)	.05
Alloy A3003, Oxidized	600 (316)	.40
Alloy A3003, Oxidized	900 (482)	.40
Alloy 1100-0	200-800 (93-427)	.05
Alloy 24ST	75 (24)	.09
Alloy 24ST, Polished	75 (24)	.09
Alloy 75ST	75 (24)	.11
Alloy 75ST, Polished	75 (24)	.08

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Bismuth
Bright	176 (80)	.34
Unoxidized	77 (25)	.05
Unoxidized	212 (100)	.06

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Brass
73% Cu, 27% Zn, Polished	476 (247)	.03
73% Cu, 27% Zn, Polished	674 (357)	.03
62% Cu, 37% Zn, Polished	494 (257)	.03
62% Cu, 37% Zn, Polished	710 (377)	.04
83% Cu, 17% Zn, Polished	530 (277)	.03
Matte	68 (20)	.07
Burnished to Brown Color	68 (20)	.40
Cu-Zn, Brass Oxidized	392 (200)	.61
Cu-Zn, Brass Oxidized	752 (400)	.60
Cu-Zn, Brass Oxidized	1112 (600)	.61
Unoxidized	77 (25)	.04
Unoxidized	212 (100)	.04

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Cadmium	77 (25)	.02

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Carbon
Lampblack	77 (25)	.95
Unoxidized	77 (25)	.81
Unoxidized	212 (100)	.81
Unoxidized	932 (500)	.79
Candle Soot	250 (121)	.95
Filament	500 (260)	.95
Graphitized	212 (100)	.76
Graphitized	572 (300)	.75
Graphitized	932 (500)	.71

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Chromium	100 (38)	.08
Chromium	1000 (538)	.26
Chromium, Polished	302 (150)	.06
Cobalt, Unoxidized	932 (500)	.13
Cobalt, Unoxidized	1832 (1000)	.23

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Columbium
Unoxidized	1500 (816)	.19
Unoxidized	2000 (1093)	.24

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Copper
Cuprous Oxide	100 (38)	.87
Cuprous Oxide	500 (260)	.83
Cuprous Oxide	1000 (538)	.77
Black, Oxidized	100 (38)	.78
Etched	100 (38)	.09
Matte	100 (38)	.22
Roughly Polished	100 (38)	.07
Polished	100 (38)	.03
Highly Polished	100 (38)	.02
Rolled	100 (38)	.64
Rough	100 (38)	.74
Molten	1000 (538)	.15
Molten	1970 (1077)	.16
Molten	2230 (1221)	.13
Nickel Plated	100-500 (38-260)	.37

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Dow Metal	0.4-600 (-18-316)	.15

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Gold
Enamel	212 (100)	.37
Plate(.0001)
Plate on .0005 Silver	200-750 (93-399)	.11-.14
Plate on .0005 Nickel	200-750 (93-399)	.07-.09
Polished	100-500 (38-260)	.02
Polished	1000-2000 (538-1093)	.03

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Haynes Alloy C
Oxidized	600 2000 (316-1093)	.90-.96
Haynes Alloy 25
Oxidized	600-2000 (316-1093)	.86-.89
Haynes Alloy X
Oxidized	600-2000 (316-1093)	.85-.88

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Inconel
Sheet	1000 (538)	.28
Sheet	1200 (649)	.42
Sheet	1400 (760)	.58
X, Polished	75 (24)	.19
B, Polished	75 (24)	.21

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Iron
Oxidized	212 (100)	.74
Oxidized	930 (499)	.84
Oxidized	2190 (1199)	.89
Unoxidized	212 (100)	.05
Red Rust	77 (25)	.70
Rusted	77 (25)	.65
Liquid	2700-3220 (1516-1771)	.42-.45

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Iron, Cast
Oxidized	390 (199)	.64
Oxidized	1110 (599)	.78
Unoxidized	212 (100)	.21
Strong Oxidation	40 (104)	.95
Strong Oxidation	482 (250)	.95
Liquid	2795 (1535)	.29

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Iron, Wrought
Dull	77 (25)	.94
Dull	660 (349)	.94
Smooth	100 (38)	.35
Polished	100 (38)	.28
Lead
Polished	100-500 (38-260)	.06-.08
Rough	100 (38)	.43
Oxidized	100 (38)	.43
Oxidized at 1100¡F	100 (38)	.63
Gray Oxidized	100 (38)	.28

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Magnesium	100-500 (38-260)	.07-.13

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Magnesium Oxide	1880-3140 (1027-1727)	.16-.20

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Mercury	32 (0)	.09
Mercury	77 (25)	.10
Mercury	100 (38)	.10
Mercury	212 (100)	.12

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Molybdenum	100 (38)	.06
Molybdenum	500 (260)	.08
Molybdenum	1000 (538)	.11
Molybdenum	2000 (1093	.18
Oxidized at 1000¡F	600 (316)	.80
Oxidized at 1000¡F	700 (371)	.84
Oxidized at 1000¡F	800 (427)	.84
Oxidized at 1000¡F	900 (482)	.83
Oxidized at 1000¡F	1000 (538)	.82

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Monel
Monel, Ni-Cu	392 (200	.41
Monel, Ni-Cu	752 (400)	.44
Monel, Ni-Cu	1112 (600)	.46
Oxidized	68 (20)	.43
Oxidized at 1110¡F	1110 (599)	.46

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Nickel
Polished	100 (38)	.05
Oxidized	100-500 (38-260)	.31-.46
Unoxidized	77 (25)	.05
Unoxidized	212 (100)	.06
Unoxidized	932 (500)	.12
Unoxidized	1832 (1000)	.19
Electrolytic	100 (38)	.04
Electrolytic	500 (260)	.06
Electrolytic	1000 (538)	.10
Electrolytic	2000 (1093)	.16

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Nickel Oxide	1000-2000 (538-1093)	.59-.86

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Palladium Plate
Nickel (.00005 on .0005 silver)	200-750 (93-399)	.16-.17

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Platinum
Platinum	500 (260)	.05
Platinum	1000 (538)	.10

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Platinum, Black	100 (38)	.93
Platinum, Black	500 (260)	.96
Platinum, Black	2000 (1093)	.97
Oxidized at 1100¡F (593¡C)	500 (260)	.07
Oxidized at 1100¡F (593¡C)	1000 (538)	.11

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Rhodium Flash (0.0002 on
0.0005Ni)	200-700 (93-371)	.10-.18

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Silver
Plate (0.0005 on Ni)	200-700 (93-371)	.06-.07
Polished	100 (38)	.01
Polished	500 (260)	.02
Polished	1000 (538)	.03
Polished	2000 (1093)	.03

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Steel
Cold Rolled	200 (93)	.75-.85
Ground Sheet	1720-2010 (938-1099)	.55-.61
Polished Sheet	100 (38)	.07
Polished Sheet	500 (260)	.10
Polished Sheet	1000 (538)	.14
Mild Steel, Polished	75 (24)	.10
Mild Steel, Smooth	75 (24)	.12
Mild Steel, Liquid	2910-3270 (1599-1793)	.28
Steel, Unoxidized	212 (100)	.08
Steel Oxidized	77 (25)	.80

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Steel Alloys
Type 301, Polished	75 (24)	.27
Type 301, Polished	450 (232)	.57
Type 301, Polished	1740 (949)	.55
Type 303, Oxidized	600-2000 (316-1093)	.74-.87
Type 310, Rolled	1500-2100 ((816-1149)	.56-.81
Type 316, Polished	75 (24)	.28
Type 316, Polished	450 (232)	.57
Type 316, Polished	1740 (949)	.66
Type 321	200-800 (93-427)	.27-.32
Type 321, Polished	300-1500 (149-815)	.18-.49
Type 321 w/BK Oxide	200-800 (93-427)	.66-.76
Type 347, Oxidized	600-2000 (316-1093)	.87-.91
Type 350	200-800 (93-427)	.18-.27
Type 350 Polished	300-1800 (149-982)	.11-.35
Type 446, Polished	300-1500 (149-815)	.15-.37
Type 17-7 PH	200-600 (93-316)	.44-.51
Type 17-7 PH Polished	300-1500 (149-815)	.09-.16
Type C1020, Oxidized	600-2000 (316-1093)	.87-.91
Type PH-15-7 MO	300-1200 (149-649)	.07-.19
Stellite, Polished	68 (20)	.18

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Tantalum
Unoxidized	1340 (727)	.14
Unoxidized	2000 (1093)	.19
Unoxidized	3600 (1982)	.26
Unoxidized	5306 (2930)	.30

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Tin
Unoxidized	77 (25)	.04
Unoxidized	212 (100)	.05
Tinned Iron, Bright	76 (24)	.05
Tinned Iron, Bright	212 (100)	.08

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Titanium
Alloy C110M, Polished	300-1200 (149-649)	.08-.19
Alloy C110M, Oxidized at 1000¡F (538¡C)	200-800 (93-427)	.51-.61
Alloy Ti-95A, Oxidized at 1000¡F (538¡C)	200-800 (93-427)	.35-.48
Anodized onto SS	200-600 (93-316)	.96-.82

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Monel
Unoxidized	77 (25)	.02
Unoxidized	212 (100)	.03
Unoxidized	932 (500)	.07
Unoxidized	1832 (1000)	.15
Unoxidized	2732 (1500)	.23
Unoxidized	3632 (2000)	.28
Filament (Aged)	100 (38)	.03
Filament (Aged)	1000 (538)	.11
Filament (Aged)	5000 (2760)	.35

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Uranium Oxide	1880 (1027)	.79

MATERIAL	TEMP °F (°C)	e-EMISSIVITY
Zinc
Bright, Galvanized	100 (38)	.23
Commercial 99.1%	500 (260)	.05
Galvanized	100 (38)	.28
Oxidized	500-1000 (260-538)	.11
Polished	100 (38)	.02
Polished	500 (260)	.03
Polished	1000 (538)	.04
Polished	2000 (1093)	.06

Source: http://www.omega.com/literature/transactions/volume1/emissivitya.html

LAGUNASTAR INDUSTRIES COMPANY

Industrial distributor based in Santa Rosa City, Laguna Philippines.

Lagunastar Industries Company

shop located at : 3rd Floor, unit C-22 Banawe De Sta Rosa , Balibago Santa Rosa City, Laguna Philippines

"SOLDERING ANTI-STATIC thermoMETERS)

contact person: ferdi
Engr. Ferdinand T. Estanislao
Tel +6349 5308463
mob. 0933-5996622
Skype: lagunastar.industries1 , lagunastar.industrie2

lagunastar1@gmail.com ,

lagunastar2@gmail.com

lagunastar3@gmail.com

www.hanstartools.com http://soldering102.blogspot.com
"He who will not economize will have to agonize" — Confucius

OBJECTIVE:
1. Assist Electronics Factories in the Philippines in their "COST CUTTING " Programs by supplying Low Cost but Good Quality Soldering Station, Soldering Tools and Accessories, Replacement Soldering Tips, Anti-Static Tools, & other electronic tools for industrial usage.

Back to Soldering101 HOME (Philippines)
to HANSTAR ELECTRONICS EQUIPMENT (CHINA)

Its products are:
- Soldering Stations, Replacement Soldering tips, Soldering Pots (solder bath), Soldering Thermometer, Soldering Tools & accessories, Anti-Static Tools, Anti-Static Ionizers, ESD products likes esd brush, esd tweezers, esd rubber mat, anti-static wrist strap.

It is also a supplier of Digital Thermometers for medical & Industrial Usage ; Linear Measurement like digital calipers, micrometers,height gauge,etc.

HOW TO BUY?

A. For nearby clients:
1. Please visit our store at Santa Rosa City, Laguna
2. inquire & order via
email : lagunastar2@gmail.com, lagunastar3@gmail.com
landline: (049) 5308463
text/call: 09335996622

or

B. Via Internet/text/telephone
steps:
1. inquire & order via
email : lagunastar2@gmail.com, lagunastar3@gmail.com, lagunastar1@gmail.com
Tel= 049 5308463
text/call: 0933-5996622

2. deposit payment

Preferred (for faster payment verification):

ChinaBank Savings Account No. 260-043441-4 (SM Santa Rosa branch) Account name: Ferdinand Estanislao

RobinsonsBank Savings Account no. 306-37-000756-2 (Santa Rosa, Laguna Branch) Account name : Ferdinand Estanislao

Company account:

ChinaBank Savings Account No. 260-079441-3 (SM Santa Rosa branch)

Account name: LAGUNASTAR INDUSTRIES COMPANY

3. Inform us if payment has been made

4. Upon confirmation of payment,
5. We will send the items via LBC (1 day delivery all over the Philippines) &
6. Kindly inform us after you received the items

C. For Industrial Buyers or Buyers representing a company:
Pls contact us

"HONESTY IS STILL THE BEST POLICY"

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