humidity meters
LUMAQUIN, S.A.
Av. Riu Mogent 18
C.I.Vallesana, 08170 Montornés del Vallés (Barcelona)
Telf.: 935 444 430 Fax.: 935 722 674
[email protected], www.lumaquin.com
HUMIDITY METERS
humidity meters
hygrometers & therma-hygrometers
In many manufacturing processes the measurement of relative
humidity (% RH) is important, as many products are sensitive to
variations in humidity. Therefore humidity needs to be measured
and controlled for the end products to be consistent in both
quality and performance.
what is a hygrometer?
A hygrometer is an instrument used to measure the quantity
of water vapour present in air. Hygrometers can measure
relative humidity over the range of 0 to 100% RH but in most
instruments, this range may be more limited depending on the
sensor type. Relative humidity is expressed as the ratio of the
amount of water vapour present in the air or gas, to the quantity
which would reach saturation, saturation being 100%.
applications
There are a wide range of applications for % RH measurement
in the following industries:
l pharmeceutical
l paper mills
l food processing
l computer rooms
l electronic component production
l livestock
The pharmaceutical industry is one of the largest users of
humidity instrumentation as products can be sensitive to
variations in humidity levels. Food manufacturing processes
rely on humidity control, as food preservation techniques are
often focused on limiting the activity of water. The humidity is
an essential element of climate control in buildings for optimum
comfort and energy conservation. Paper and paper based
products are highly sensitive to humidity and moisture levels.
During production, storage and distribution, the monitoring of
humidity can have significant benefits on quality.
monitor humidity levels for better health
If a building is too damp and the humidity level is too high
at above 70% RH, not only does mould develop but it can
encourage dust mites to breed in carpets and mattresses.
Conversely, if the humidity level is too low at below 25% RH,
it can cause respiratory discomfort. The regular monitoring of
humidity levels in buildings can improve health.
dew point
The dew point is defined as the lower temperature to which
air must be cooled in order for condensation (saturation) to
occur. The dew point is dependent on the concentration of
water vapour (% RH) present.
UKAS Certificates of Calibration
ETI's in-house UKAS calibration laboratory offers certification
for both temperature and humidity instruments. Each certificate
indicates deviations from standards at five temperature or
humidity check points.
98
www.etiltd.co.uk
serving industry for 25 years 1983-2008
HUMIDITY METERS
ETI 8711
therma-hygrometer
3 humidity range 0 to 100% RH
3 temperature range 0 to +90°C
3 max/min, °C/°F switchable & hold functions
3 remote relative humidity & temperature probe
The 8711 therma-hygrometer is an easy to use relative humidity
and air temperature measuring instrument. The display incorporates
a custom LCD with °C/°F, % RH, max/min and hold indication. There
is an automatic display of both open circuit and low battery. The 8711
simultaneously displays both the % RH and temperature. The unit measures
% RH over the range of 0 to 100% RH with a resolution of 0.1% RH and
temperature over the range of 0 to +90°C with a resolution of 0.1°C or °F
switchable.
An auto power off facility turns the therma-hygrometer off automatically after
20 minutes which maximises battery life. The unit is powered by a 9 volt alkaline
PP3 battery with a minimum life expectancy of up to 100 hours, or via a 9/230 volt
AC/DC power adaptor for continuous use. The therma-hygrometer incorporates,
as standard, a RS232 output socket.
The therma-hygrometer probe is detachable via a 6-pin connector. If the probe needs to be replaced, the instrument
will require recalibration. Supplied with carrying case, battery and instructions for use.
optional accessories
A protective PVC boot is available that helps to protect instruments against accidental
damage. The RS232 lead and software is an optional extra for users that wish to log, record
and analyse humidity and temperature data.
RH calibration test capsules are also available for 33% and 75% RH (supplied as a pair).
Simply insert the probe into the capsule and compare the humidity reading against the value
of the capsule.
specification
range
resolution
accuracy
sensor type
battery
battery life
display
dimensions
weight
temperature
0 to +90°C
0.1°C or 0.1°F
±0.5°C ±1 digit
semi conductor
9 volt MN1604 (PP3)
100 hours
custom LCD
30 x 70 x 180mm
215 grams
humidity
0 to 100% RH
0.1% RH
±3% (15 to 90% RH)
thin film polymer
order code description
225-060
225-066
816-075
825-200
812-002
825-210
8711 therma-hygrometer
spare 8711 RH probe
RH test caps (pair)
RS232 lead & software
9/230 volt AC/DC power adaptor
protective PVC boot
MEASUREMENT THAT WORKS
°C/°F
HOLD
AUTO
OFF
% RH
tel: 01903 202151
99
HUMIDITY METERS
ETI 8703
therma-hygrometer
3 integral % RH & temperature probe
3 max/min function & dew point calculation
This easy to use, pocket-sized, therma-hygrometer measures both relative
humidity and air temperature. The instrument will also display the maximum
and minimum readings and calculate the dew point. The therma-hygrometer
measures % RH over the range of 5 to 95% RH with a resolution of 0.1% RH
and temperature over the range of -20 to +50°C with a resolution of 0.1°C
or °F switchable.
The digital 8703 therma-hygrometer incorporates a
clear LCD display indicating both % RH and temperature
simultaneously. The display also automatically indicates
both open circuit and low battery, when applicable.
The therma-hygrometer incorporates six, easy to use,
push buttons allowing the user to select on/off, °C/°F,
max/min, dew point (td), reset (RST) and display hold
functions. Each unit is supplied with a sensor protective
cover that incorporates a pocket clip.
order code
816-703
specification
range
resolution
accuracy 1°C
sensor type
battery
battery life
display
dimensions
weight
description
8703 therma-hygrometer
°C/°F
temperature
humidity
-20 to +50°C
5 to 95% RH
0.1°C or 0.1°F
0.1% RH
±1°C ±1 digit
±3% (10 to 90% RH)
thermistor
capacitance
2 x 1.5 volt MN2400 (AAA)
500 hours
custom LCD
17 x 48 x 170mm
100 grams
HOLD
MAX/MIN
% RH
DEW
POINT
hygro-thermo
pocket-sized hygrometer
3 displays simultaneously humidity & temperature
3 maximum & minimum function
The pen-shaped hygro-thermo incorporates a large,
clear LCD that simultaneously displays both humidity
and temperature over the range of 20 to 95% RH and
0 to +50°C.
The instrument is ideal for monitoring the humidity and
temperature in a wide range of applications. Unlike
many hygrometers that are large and heavy to carry
around, this compact instrument is truly pocket-sized
and convenient to use.
The hygro-thermo incorporates a max/min button which
allows the user to display the maximum and minimum
humidity and temperature simultaneously.
The unit is housed in a slim, pen-shaped ABS case
measuring 20 x 23 x 138mm and incorporates a
pocket clip.
order code description
810-190
pen-shaped hygro-thermo
100
www.etiltd.co.uk
specification
range
resolution
accuracy 1°C
sensor type
battery
battery life
display
dimensions
weight
temperature
humidity
0 to +50°C
20 to 95% RH
1°C
1% RH
±1°C
±5% RH
thermistor
capacitance
1.5 volt MN2400 (AAA)
6,000 hours
custom LCD
20 x 23 x 138mm
35 grams
°C/°F
MAX/MIN
% RH
serving industry for 25 years 1983-2008
HUMIDITY METERS
hygrometer
therma-hygrometer
3 integral % RH & remote temperature probe
3 maximum, minimum & temperature alarm functions
This hygro-thermometer simultaneously displays both the
humidity and temperature in addition to indicating and
recording the maximum and minimum readings.
The instrument measures both humidity and temperature
over the range of -20 to +70°C and 20 to 99% RH
utilising the internal sensors. Utilising the external
temperature sensor the temperature range is extended
to -50 to +70°C.
The unit features a temperature alert alarm that will sound
when the external remote temperature probe indicates
the temperature is 0°C or below. This feature is ideal
for frost/freeze alert in horticulture and similar.
The unit is housed in an ABS case measuring 20 x 65 x
97mm, the case incorporates a useful foldaway stand
and a keyhole slot for hanging on a wall.
order code
810-155
specification
range
resolution
accuracy
sensor type
battery
battery life
display
dimensions
weight
description
therma-hygrometer
temperature
humidity
-50 to +70°C
20 to 99% RH
0.1°C or 0.1°F
1% RH
±1°C
±5% RH
thermistor
capacitance
1.5 volt MN2400 (AAA)
1,000 hours
dual custom LCD
20 x 65 x 97mm
100 grams
°C
MAX/MIN
AUDIBLE
ALARM
% RH
Moisture Alert
therma-hygrometer
3 displays max/min humidity or max/min temperature
3 pre-set audible alarm
The Moisture Alert therma-hygrometer incorporates a
custom LCD display that indicates either humidity (20 to
95% RH) or temperature (0 to +50°C). The instrument
is ideal for monitoring the humidity in buildings and
housing or anywhere where humidity, moisture or
dampness is a problem.
The Moisture Alert incorporates a pre-set audible max/
min alarm for both humidity and temperature. The
alert will automatically sound if the humidity exceeds
70% RH or drops below 25% RH. Alternatively, if the
temperature exceeds +40°C or falls below +1°C the
alert will sound.
The unit is housed in an ABS case measuring 20 x 65 x
97mm, the case incorporates a useful foldaway stand
and a keyhole slot for hanging on a wall.
order code description
810-170
Moisture Alert therma-hygrometer
MEASUREMENT THAT WORKS
specification
range
resolution
accuracy
sensor type
battery
battery life
display
dimensions
weight
temperature
humidity
0 to +50°C
20 to 95% RH
0.1°C
0.1% RH
±1°C
±4% RH
thermistor
capacitance
1.5 volt MN2400 (AAA)
5,000 hours
custom LCD
20 x 65 x 97mm
73 grams
°C
MAX/MIN
AUDIBLE
ALARM
% RH
tel: 01903 202151
101
HUMIDITY METERS
therma-hygrometer
for panel-mounting
3 simultaneously displays temperature & humidity
3 easy panel-mounting installation
This panel-mounted therma-hygrometer simultaneously
displays both humidity over the range of 20 to 99% RH
and temperature over the range of 0 to +50°C with a
resolution of 1% RH and 0.1°C. This instrument is ideal
for OEMs for installing into equipment, i.e. vivariums,
egg hatcheries and similar.
The therma-hygrometer is easily installed into a panel via
a Ø33mm mounting hole. The unit incorporates a screw
clamp with a maximum panel thickness of 7mm.
The hygro-thermometer features a max/min memory
function for both temperature and humidity. The
instrument can be panel mounted via a minimum
Ø33mm cutout. The unit is powered by a CR2032
coin cell battery with a life expectancy of 5,000 hours
continuous use.
order code
810-180
specification
range
resolution
accuracy
sensor type
battery
battery life
display
dimensions
weight
temperature
humidity
0 to +50°C
20 to 99% RH
0.1°C
1% RH
±1°C
±4% RH
thermistor
capacitance
3 volt CR2032 lithium coin cell
5,000 hours
dual custom LCD
Ø50 x 41mm
42 grams
description
panel-mounted therma-hygrometer
°C
MAX/MIN
% RH
dial hygrometers
therma-hygrometer
102
general purpose dial hygrometer
room dial hygrometer
This easy to read general purpose hygrometer
incorporates a 70mm diameter dial with colour-coded
zones. The hygrometer indicates the level of humidity
in 5% divisions over the range of 0 to +100% RH. The
green ABS housing measures 70 x 60mm and can be
free-standing or hung by the hook from a shelf.
This room hygrometer incorporates a 70mm diameter
dial with colour-coded zones indicating the moisture/
water vapour in the atmosphere. The unit indicates the
level of humidity in 5% divisions over the range of 0 to
+100% RH. The blue ABS housing measures 70 x 60mm
and can be free-standing or hung from a shelf.
order code
800-125
order code
800-130
description
general purpose dial hygrometer - green
www.etiltd.co.uk
description
room dial hygrometer - blue
serving industry for 25 years 1983-2008
whirling & mason's
compact whirling hygrometer
professional whirling hygrometer
This compact whirling hygrometer (sling psychrometer)
is a reliable instrument for the measurement of relative
humidity utilising wet and dry bulb mercury-filled
thermometers. The handy self-contained case folds
into a compact pocket-sized unit.
This professional whirling hygrometer (sling psychrometer)
offers the maximum level of accuracy for the measurement
of relative humidity utilising wet and dry bulb mercuryfilled thermometers.
The hygrometer measures the wet and dry temperature
over the range of 0 to +45°C enabling the relative
humidity to be calculated (1 to 97% RH). The unit
incorporates an integral slide rule for ease of reading
and convenience. The folded dimensions of the whirling
hygrometer are 16 x 35 x 209mm.
The unit incorporates a water reservoir linked to the wet
bulb by the means of a cotton sleeve. The thermometer
tubes measure temperature over the range of 0 to +50°C
enabling the % RH to be calculated utilising the chart
supplied. The dimensions of the whirling hygrometer
are 11 x 45 x 220mm (plus handle).
order code description
order code
817-001
817-025
mason's hygrometer
mason's hygrometer
This spirit-filled mason's hygrometer
is a wall-mounted wet and dry
thermometer for determining the
relative humidity.
This spirit-filled mason's hygrometer
is a wall-mounted wet and dry
thermometer for determining the
relative humidity.
The mason's hygrometer measures
the wet and dry temperature over
the range of -15 to +50°C.
The mason's hygrometer
measures the wet and dry
temperature over the range of
-10 to +50°C.
817-010
compact whirling hygrometer
The unit is supplied with a slide rule
for calculating the relative humidity
over the range of 1 to 97% RH.
The mason's hygrometer housing
is manufactured from robust white
ABS plastic and incorporates an
integral hook for wall-mounting.
The case dimensions are 34 x 75
x 310mm.
order code
817-050
description
mason's hygrometer - white
MEASUREMENT THAT WORKS
HUMIDITY METERS
traditional hygrometers
description
professional whirling hygrometer
spare tube
The unit is supplied with a slide
rule for calculating the relative
humidity to be calculated over
the range of 1 to 97% RH. The
mason's hygrometer housing is
manufactured from robust blue
ABS plastic and incorporates an
integral hook for wall-mounting.
The case dimensions are 40 x 80
x 310mm.
order code
817-060
description
mason's hygrometer - blue
tel: 01903 202151
103
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