Elcometer 309 Delta T Hygrometer Provides Measurements in Relative Humidity (RH) and Delta T (TΔ) are the two climatic values which are specified on data sheets Supplied in india by Multilab Chennai http://www.multilab.biz/testing/elcometer-testing-equipments/climatic-testing/elcometer309-delta-t-hygrometer.htm Product Description: Before painting, the coater must meet the coatings’ parameters. These are clearly specified on the paint manufacturer’s product data sheet. Relative Humidity (RH) and Delta T (TΔ) are the two climatic values which are specified on data sheets. The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of these two critical characteristics. Delta T (TΔ): The difference between the surface temperature (Ts) and the dewpoint temperature (Td). When TΔ is less than 3ºC (5ºF) painting should not occur. Relative Humidity (RH): This is the amount of water vapour taken up by air. Expressed as a percentage, RH is dependent on the air temperature. Typical maximum RH values specified by paint manufacturers are between 75% and 85%. Rugged design: Suitable for use in extreme environments the Elcometer 309 is dustproof and waterproof with fully sealed sensors. High / Low Limits: Displayed on screen graphically as either (?) or (X) with flashing Red or Green LED’s to indicate pass or fail. Delta T Temperature: TΔ is pre-set at >3ºC (>5ºF), the industry norm. Relative Humidity: User definable upper limit can be set for RH. Measurement Hold / Release function: With a single button press readings are ‘frozen’ on the screen. These can then be recorded before, simply pressing the button again to ‘unfreeze’ the screen and then take further readings as necessary. Backlight: Provides clearly lit information – ideal in dark or confined spaces. Technical Specification: Part Number Description G309----1 Elcometer 309 Delta T Hygrometer Temperature Range (Air & Surface) -20 to +80ºC (-4 to +176ºF) Relative Humidity (RH) Range 0 to 100%RH (Default upper limit 75%, user adjustable) Resolution 0.1ºC / 0.1% Power Supply 2 x AA 1.5V Batteries or via USB Cable Battery Life Greater than 40 hours (Backlight off) Dimensions 180 x 75 x 35mm (7 x 3 x 1.4”) Weight 300g (10.6oz) Certificate available Certificate of Calibration: issued for Fixed Calibration equipment and shows readings and traceability Packing List Elcometer 309 Delta T Hygrometer, wrist strap, 2 x AA batteries, protective pouch with belt clip, RH probe calibration certificate and operating instructions Can be used in accordance with: BS 7079-B4, ISO 8502-4 Standards in grey have been superseded but are still recognised in some industries. Accessories: Part Number Description T99921192 Protective Carry Case / Pouch T99921325 USB Cable T99916063 Wrist Strap TCAL-309F Optional Full Calibration Certificate

1. ENGLAND
Elcometer Limited
Manchester M43 6BU
DFT,
Tel: +44 (0)161 371 6000
Fax: +44 (0)161 371 6010
Fineness of Grind, Density,
e-mail: sales@elcometer.com
Flow Cups, Viscosity, Flash Point,
Film FRANCE
Applicators, Washability and
Abrasion Testers, Hardness, Impact & Bend
Elcometer Sarl
45430 Bou
esters, Gloss, Colour, Material Thickness
Tel: +33 , Wet Film Climatic Testing
rface Profile(0)2 38 86 33, 44
oating Fax: +33 (0)2 38 91 37 66
Thickness Gauges, Adhesion
e-mail: fr_info@elcometer.com
hole Testers, Porosity Detectors, Software
USA
ersion, Inspection Kits, Zahn Cups, Viscosity
Elcometer Inc
orised Film Applicators, Drying Time Recorders
Rochester Hills Michigan 48309
Abrasion, Hardness, Elasticity and
shability,Tel: +1 248 650 0500
formation, Free: 800 521 0635 Material Thickness
Toll Appearance,
urface Fax: +1 248 650 0501
Cleanliness, Dewpoint Meters
e-mail: inc@elcometer.com
Wet Film Combs, Dry Film Thickness
Cross-Hatch, Pinhole & Porosity, PIGs
GERMANY
DOI Meters, Scratch Testers
Elcometer Instruments GmbH
D-73431 Aalen
Moisture, Oven Recorders
Tel: +49(0)7361 52806 0 ™
ElcoMaster
Fax: +49(0)7361 52806 77
e-mail: de_info@elcometer.de
REPUBLIC OF SINGAPORE
Elcometer (Asia) Pte Ltd
Singapore 589472,
Tel: +65 6462 2822
Fax: +65 6462 2860
e-mail: asia@elcometer.com
DFT
Fineness of
Grind, Density
Flow & Dip Cups
Rotational Viscosity
Flash Point, Impact Testers
Washability & Abrasion Testers
Film Applicators, Bend Testers, Gloss
Thickness Gauges, Surface
Profile, Wet Film
Dry Film, Coating Thickness Gauges
Climatic Testing, Adhesion, Pinhole Testers,
Porosity, Software, Dispersion,Inspection Kits,
Zahn Cups, Motorised Film Applicators,
Drying Time Recorders, Washability, Abrasion
Scratch & Hardness, Elasticity & Deformation,
Surface Cleanliness, DOI Gloss Meters,
Colour, Moisture, Dewpoint Meters,
Cross-Hatch, Oven Recorders,
Surface Contamination
ElcoMaster
TM
BELGIUM
Elcometer SA
B-4681 Hermalle /s Argenteau
Tel: +32 (0)4 379 96 10
Fax: +32 (0)4 374 06 03
e-mail: be_info@elcometer.com
JAPAN
Elcometer KK
Nisso Dai 23 Building, Room 804,
3-8-25, Toranomon, Minato-ku,
Tokyo 105-0001
Tel: +81-3-6869-0770
Fax: +81-3-6809-1442
e-mail: jp_info@elcometer.com
THE NETHERLANDS
Elcometer NL
3584 BH Utrecht
Tel: +31 (0)30 210.7005
Fax: +31 (0)30 210.6666
email: nl_info@elcometer.com
Elcometer 308 & 309
Digital Hygrometers
www.elcometer.com
www.elcometer.com

2. Elcometer 308 & 309
Digital Hygrometers
The Elcometer 308 Hygrometer has been specifically designed for use in very
hot climates where the surface temperature of the substrate can exceed the paint
manufacturer’s recommended limits for successful painting.
Painting outside recommended limits can have a detrimental affect on the
performance and lifetime of the coating. The Elcometer 308 Hygrometer provides a
simple and fast measurement of relative humidity and surface temperature.
The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement
of the two critical climate parameters within coatings:
•
•
Elcometer 308
Delta T (TΔ): The difference between the surface temperature (Ts) and the
dewpoint temperature (Td). When TΔ is less than 3ºC (5ºF) painting should not
occur.
Relative Humidity (RH): This is the amount of water vapour taken up by air.
Expressed as a percentage, RH is dependent on the air temperature.
Elcometer 309
STANDARDS:
BS 7079-B4 (Elcometer 309),
ISO 8502-4 (Elcometer 309)
C
Technical Specification
Model
Elcometer 308 Hygrometer
Elcometer 309 Delta T Hygrometer
Part Number
G308----1
G309----1
TΔ RH
Ts RH
Operating Range
-20ºC to +80ºC (-4 ºF to +176ºF)
Air Temperature (TΔ)
-20ºC to +80ºC (-4 ºF to +176ºF)
-20ºC to +80ºC (-4 ºF to +176ºF)
Surface Temperature (TS)
-20ºC to +80ºC (-4 ºF to +176ºF)
-20ºC to +80ºC (-4 ºF to +176ºF)
Relative Humidity (RH) &
Accuracy
0% to 100% RH (±3%)
0% to 100% RH (±3%)
(Default upper limit 75%, user adjustable)
Resolution
0.1ºC (0.1ºF) / 0.1%
0.1ºC (0.1ºF) / 0.1%
Power Supply
2 x AA 1.5V Batteries or via USB Cable
2 x AA 1.5V Batteries or via USB Cable
Battery Life
Greater than 40 hours (Backlight off)
Greater than 40 hours (Backlight off)
●
Certificate
●
Dimensions & Weight
180 x 75 x 35mm (7 x 3 x 1.4”) 300g (10.6oz)
180 x 75 x 35mm (7 x 3 x 1.4”) 300g (10.6oz)
Packing List
Elcometer 308 Hygrometer, wrist strap, 2 x AA
batteries, protective carry case/pouch with belt
clip, RH & surface probe calibration certificate
and operating instructions.
Elcometer 309 Delta T Hygrometer, wrist strap,
2 x AA batteries, protective carry case/pouch
with belt clip, RH probe calibration certificate and
operating instructions.
Accessories
T99923480
T99921325
T99916063
TCAL-308F
TCAL-309F
Protective Carry Case/Pouch
USB Cable
Wrist Strap
Optional Full Calibration Certificate; Elcometer 308
Optional Full Calibration Certificate; Elcometer 309
● Basic Calibration Certificate supplied as standard.
www.elcometer.com

3. Related Products
Elcometer 319 Dewpoint Meter
This rugged dew point meter is designed to measure and record all relevant
climatic parameters required to determine whether the conditions are
suitable for painting. The Elcometer 319 dewpoint meter can be used as a
hand-held gauge or a stand alone data logger - ideal for monitoring climatic
conditions over a period of time.
Elcometer 320 Climate Monitoring System
Using readily available, off the shelf components the Elcometer 320 - together
with ElcoMonitor™ Software and the Elcometer 319 Dewpoint Meter - is a
powerful system which simply and accurately monitors climatic parameters
in any number of locations.
Elcometer 212 Digital Pocket Thermometer
The Elcometer 212 is a digital, pocket size thermometer ideal for day to day
use.
Incorporating a fast response stainless steel liquid or surface probe, the
Elcometer 212 provides temperature readings in under four seconds.
Elcometer 214L IR Digital Laser Thermometer
The Elcometer 214 is a simple, easy to use, non contact thermometer which
safely and accurately measures surface temperature of non-reflective
materials using infrared technology.
Elcometer 116 Whirling & Sling Hygrometers
These instruments are designed to determine the dewpoint and relative
humidity at any given time.
www.elcometer.com