OPERATION MANUAL
HM309 portable measuring device
Description
Technical data
Features
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for measuring relative humidity and temperature
sensors suitable for hop kilns
temperature resistant to 80°C (briefly to 130°C)
measurement range 0 ... 100% RH and 40 ... 80°C
absolute humidity calculation, dew point calculation
min./max. value memory
hold function
automatic shutoff and configuration
calibration function
USB port
cordless or plug-in operation
Applications
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for measuring drying kiln air
conditioning chamber
hop kiln
stationary installation
dryers
quality assurance
Technical changes reserved
0141 0316-127 20.04.2016
Humidity measurement (depending on sensor, data apply to 1308 STD)
Humidity measurement range 0 ... 100% RH
Humidity resolution (display) 0.1% RH
Humidity resolution
0.01% RH
(interface)
Precision
±2% RH
Reaction time
10 sec.
Temperature measurement
(depending on sensor, data apply to 1308 STD)
Temperature measurement
-40 ... 80°C
range
Temperature resolution
0.1°C or 0.1°F
Temperature resolution
0.01°C
(interface)
Precision
±0.5°K
Reaction time
10 sec.
General
Measurement rate
2 measurements per second (2 Hz)
Special function
Measurement of absolute humidity
and dew point (also pressure point),
Measurement value storage,
Minimum and maximum value storage,
USB port, Battery monitoring
Automatic shutoff
Battery
9 V, alkaline IEC 6252
approx. 100 hours operating time
Operating temperature
0 ... 50°C
Indicator component
Display
two-line LCD display 37 mm x 42 mm
Dimensions
181 x 71 x 38 mm (without plug)
Housing
ABS, black
Accessories
Battery, operating manual
Special accessories
Special sensor, pressure dew point
sensor, carrying case, calibration
sets, PC cable, software, battery set,
charger, power adapter
CE conformity
2014/30/EU
EMC emitted interference
EN 61000-6-3:2011
EMC interference immunity EN 61000-3-1:2007
Item
Item No.
HM309 portable measuring HM309-USB
device
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
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OPERATION MANUAL
HM309 portable measuring device
Description
Relative air humidity plays a crucial role in many industrial fields and in quality assurance. In an industrial environment, very high demands are
placed on a humidity measurement device when it comes to measurement precision, long-term stability and equipment. Often, sensors are needed
that are specially adapted to the application. The series HM 309 portable devices are developed for these criteria: These robust, high-quality devices are suitable for connection to capacitative humidity sensors and offer outstanding measurement precision of up to ±1% RH. The external sensor
is pluggable and replaceable. In addition to the standard sensor with measurement precision of ±2%, special sensors for many special applications
are available for the device. Examples include a pressure-resistant dew point sensor for pneumatics, various sensors for bulk goods, and stationary
built-in sensors. Customer-specific sensors can be created to cover almost any application.
View of the device
Key functions
The keys have the following basic functions:
Description
Function
Turning the device on and off
Value on the display remains stable
Switching between °C and °F
Display of dew point and absolute humidity
Display of minimum and maximum values determined
Reset the minimum and maximum values
Connections on the device
The top of the HM 309 Hygro thermometer has several connections:
USB port
Connection for sensor
External power supply
Technical changes reserved
0141 0316-127 20.04.2016
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
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OPERATION MANUAL
HM309 portable measuring device
Instructions for use
Starting the device for the first time
Caution! Connect the sensor when the device is shut off. First shut the device off if you intend to change the measurement sensor.
Plugging in during operation can damage the sensor or the device!
The device is delivered calibrated and ready to operate. To start the measuring device for the first time, first use a screwdriver to
open the battery compartment on the back of the device and insert the battery.
Then connect the sensor’s connection cable to the appropriate socket on the front of the device. The arrow shown on the plug or the
flat side of the plug must point downward.
Prevent static charges and do not touch the electrical contacts. Electrostatic charges can damage the device or the sensor!
Turn the device on with the ON button. The current humidity and temperature values are shown on the display.
Setting up the display
In normal mode, the two-line LCD display of the controls is for showing the currently measured temperature and humidity values.
Operation in normal mode
Display
Relative humidity as a percent
Temperature in °C
Operating the HM 309 portable measuring device
Key functions
The keys have the following basic functions:
Function
Turning the device on and off
Description
Value on the display remains stable
Switching between °C and °F
Display of dew point and absolute humidity
Display of minimum and maximum values determined
Reset the minimum and maximum values
Technical changes reserved
0141 0316-127 20.04.2016
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
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OPERATION MANUAL
HM309 portable measuring device
Display of minimum and maximum values measured
The device automatically determines the largest and smallest measured values. These “MIN/MAX” values can be displayed when needed.
Operation of keys
Feedback
Display
Device is in normal mode
Press MIN/MAX key
Display the minimum values measured
“MIN” appears on the display
Press MIN/MAX key again
Display the maximum values measured
“MAX” appears on the display
If necessary: The td/aH key can be used to show the dew point or absolute humidity
angezeigt werden.
Press the MIN/MAX key to choose the min./max/ value of the factor selected
gewählten Größe
Press the td/aH key and MIN/MAX key until the device is back in normal mode.
Normalbetrieb ist
The RST key can be pressed at any time
Technical changes reserved
0141 0316-127 20.04.2016
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
This resets the min./max. values
measured
werden dadurch zurückgesetzt
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OPERATION MANUAL
HM309 portable measuring device
Display the dew point and absolute humidity
The dew point temperature or the absolute humidity can be shown instead of the temperature value.
Operation of keys
Feedback
Display
Device is in normal mode
Press the [td/aH] key
Dew point shown; display shows
“td”
The absolute humidity displays
Press the [td/aH] key again
Absolute humidity is shown in g/m3
Press the [td/aH] key again
Normal mode display of
temperature and relative humidity
Switching the temperature scale
The temperature display can be switched between the physical units °C and °F
Operation of keys
Feedback
Display
Device is in normal mode
The temperature scale switches to °F.
Press the °C / °F key
Press the °C / °F key
The display shows the measurement value in “°F”
The temperature scale switches to °C.
The display shows the measurement value in “°C”
Note: The measurement scale chosen applies to all temperature factors, as well as for the dew point temperature
The output format on the serial port does not change. Output is always in °C.
Technical changes reserved
0141 0316-127 20.04.2016
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
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OPERATION MANUAL
HM309 portable measuring device
HOLD function
The device allows the measured values to be held on the display. For example, if the values are measured in a place where the light is bad, they
can be read at another location.
Operation of
Feedback
Display
keys
Device is in normal mode
Press the HOLD key
The current measurement value display is
retained
“HOLD” appears on the display
If necessary: With the td/aH key, the last measured dew point or absolute humidity can
be shown
Pressing the MIN/MAX key displays the minimum/maximum value of the desired factor.
Press the HOLD key again
The display shows the current measurement
values again
Repair and calibration service
Of course, we offer service. If the product malfunctions, just send it to us with a short description of the problem. Please don’t forget to include your
telephone number, in case we have questions.
We will tell you the cost of repairs before we start. The cost estimate is free of charge. Charges for return shipping and packaging are calculated
based on cost.
Our calibration laboratory can also calibrate your measuring and testing devices from other manufacturers based on national standards. Just contact us. We will be happy to make you a no-obligation offer.
Index of order numbers
Item
Measuring device HM309
Sensor for hop drying
Sensor for measurements in the air
Sensor with stainless-steel sensor tube for aggressive media
Calibration set 11.3% RH and 32.9% RH
Calibration set 11.3% RH, 32.9% RH, 75.4% RH
PC cable
PC cable incl. USB-RS232 adapter
Software
Power adapter
Technical changes reserved
0141 0316-127 20.04.2016
Item No.
HM309-USB
0636 0010
FF-HM309-LC
FF-HM309-HQ2
REFZ-12Z-SET1
REFZ-12Z-SET2
USB cable
0555 0236
PCLOG
NG-12V-670mA
Attention
Please avoid extreme mechanical and inappropriate
exposure.
The device/product is not suitable for potential explosive
areas and medical-technical applications.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Str. 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com
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