RS PRO RS-1161 User manual

Instruction Manual
RS-1161
127-8297
Datalogger Thermo-Hygro-Barometer
FR
EN
IT
DE
ES

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00
CONTENTS
Title Page
1. INSTRUCTION ..................................................................................................1
2. FEATURES AND APPLICATIONS....................................................................2
3. SPECIFICATIONS.............................................................................................3
4. PARTS & CONTROLS......................................................................................4
4-1 Description of Parts & Control keys .......................................................4
4-2 Description of Display.............................................................................6
5. OPERATING INSTRUCTIONS........................................................................10
5-1 Selecting Measurement units...............................................................10
5-2 Setting the Real-Time...........................................................................10
5-3 Taking Measurements..........................................................................11
5-4 Taking Maximum (MX) & Minimum (MN) Recorder Measurements ...12
5-5 Setting the Display Refresh Mode........................................................13
5-6 Taking Alarm Operation .......................................................................13
5-7 Taking Data Filtering Measurements...................................................16
5-8 Setting the Auto Power off Time ..........................................................17
5-9 Manual data Memory and Read Mode.................................................17
5-10 Auto Datalogging................................................................................18
5-11 Auto-Cycle Timer Datalogging ...........................................................19
5-12 No-Cycle Timer Datalogging..............................................................19
5-13 User Friendly Calibration Procedure..................................................20
6. MAINTENANCE...............................................................................................21
7. SOFTWARE INSTALLATION AND OPERATION ..........................................21

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 1
1. INSTRUCTION
The meter is designed for measurement of temperature, relative humidity,
atmospheric pressure and pressure tendency. Measured values can be stored in
programmable interval into internal microSD CARD 4GB and transferred anytime
to a PC.
Measured values are displayed on a three line LCD display. The meter
compares all measured values (temperature, humidity, air pressure and dew
point temperature) with two adjustable levels for each measured quantity.
Breaking the level is indicated bythe correct values flashing on the display and
by audio indication (switchable). Meter is equipped with maximum and
minimum with time stamp memory function.
※Protected by: Taiwan: D170349
U.S.A. : US D741,733
China : ZL 2014 3 0449747.6

Datalogger Thermo-Hygro-Barometer / EN
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2. FEATURES AND APPLICATIONS
Features:
Triple LCD displays Barometric pressure, Temperature, and Relative humidity.
Dew point and Wet bulb temperature reading.
Absolute humidity, Mixing ratio and Enthalpy reading.
Water vapor pressure and Water saturation pressure reading.
Pressure trend and tendency (P3h) reading.
Heat Index and Humidex reading.
MAX/MIN with Time Stamp.
Comparator function.
Alarm output function.
Auto power off function.
Data Hold function.
Manual data memory and read function.
Auto data logger function.
USB Interface.
Applications:
Mobile weather station.
Clean rooms, computer rooms, HVAC systems.
Pharmaceutical and food processing and storage.
Hospitals, laboratories, semiconductor fabs, electronic assembly.
Warehousing, museums, gallery, churches.
Manufacturing, green-houses, farm animal shelters.
Cooling and climate technology.
Construction, building physics, loss assessment.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 3
3. SPECIFICATIONS
Measurement range:
Humidity: 0% to 100%RH
Temperature: -40℃to +100℃(-40℉to +212℉)
Atmospheric pressure: 300 to 1200hPa
Resolution: 0.1% RH, 0.1℃, 0.1℉, 0.1hPa
Accuracy:
Temperature: ±0.4℃(at +5℃to +60℃)
±0.8℃(at -20℃to 5℃and +60℃to +80℃)
±1.2℃(at -40℃to -20℃and +80℃to +100℃)
±0.8℉(at +41℉to +140℉)
±1.6℉(at -4℉to 41℉and +140℉to +176℉)
±2.4℉(at -40℉to -4℉and +176℉to +212℉)
Humidity: ±3%RH (at 25℃, 20 to 80% RH)
±4%RH (at 25℃, 10 to 20% RH and 80 to 90% RH).
±5%RH (at 25℃, 0 to 10% RH and 90 to 100% RH).
Atmospheric pressure: ±2hPa at 25℃, ±4hPa at -20 to 85℃
Response time (at 1m/s air flow):
Humidity: 63% < 10s (from 33 to 75% RH)
Temperature: 63% < 10s (from 15℃to 45℃)
Display refresh rate: 1s in FAST mode, 1s to 5s in dynamic mode
Data memory capacity:99 sets. (Direct reading from LCD display)
Data logger capacity: microSD CARD 4GB (Maximum 99 blocks)
Alarm output:
Open-collect output. Input impedance:490
Maximum applied Voltage: 24V DC
Maximum drive current:50mA DC
Operating temperature and humidity: 0℃to 60℃, below 95% RH
Storage temperature and humidity: -10℃to 60℃, below 70% RH
Power supply: 006P 9V or IEC6F22, NEDA 1604 battery
Battery life:Approx. 2 months
Dimensions / Weight: 249×64×26mm (9.8”×2.52”×1.02”) / Approx. 178g (6.3oz)
Accessories: Instruction manual, Battery, Carrying case, CD software,
Micro-USB cable
Optional accessory: AC adaptor DC 9V

Datalogger Thermo-Hygro-Barometer / EN
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4. PARTS & CONTROLS
4-1 Description of Parts & Control keys:
(1) Humidity, Temperature and Pressure Sensor tube.
(2) Display
(3) Power key : Press Power keyto turn the meter on or off.
(4) SET key: Press SET key to enter the setting mode. Press key to exit this
mode or press SET key for 3 seconds to exit setting mode.
SET 01: Measurement units setting mode.
SET 02: Display refresh rate setting mode.
SET 03: Real time setting mode.
SET 04: Alarm limit values setting mode.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 5
SET 05: Alarm sound on/off setting mode.
SET 06: Auto power off time setting mode.
SET 07: Auto datalogging interval time setting mode.
SET 08: No-cycle timer datalogging setting mode.
SET 09: Auto-cycle timer datalogging setting mode.
SET 10: Clear the manual memorized data mode.
SET 11: Clear the auto memorized data mode.
SET 12: Data averaging time setting mode.
SET 13: User calibration setting mode.
(5) MODE key:
Press this key to circulate the reading of (℃, %RH, hPa), (Td, P3h, hPa),
(Td/f, x, H2O ppmv), (T, Pw, H2O ppmw), (Tw, Pws, hPa), (a, %RH,
hPa), (h, %RH, hPa), (HI, %RH, hPa), (Humdx, %RH, hPa) and (YIM, d-h,
m:s).
Press this key for 3 seconds to exit the circulate reading.
(6) MEM/LOG/key :
MEM key: Press this key one time to store a measuring data.
LOG key: Press this key for 3 seconds to enter or exit the datalogging
mode.
key: In the setting mode, press this key to move cursor to the desired
position.
(7) HOLD/MX/MN/key :
HOLD key: Press this keymomentarily to freeze or unfreeze the displayed
reading.
MX/MN key: Press this key for 3 seconds to enter the MX (maximum) / MN
(minimum) reading mode.
Press this keyagain to circulate the MX and MN reading.
Press this key for 3 seconds to exit this mode and store one set
recorded data to memory.
key: In the setting mode, press this keyto store the setting data and exit.
(8) READ/ALARM/key:
READ key: Press this key to enter the READ mode, then press this key
again to select the desired stored number of data to read.
Press key to exit.
ALARM key: Press this key for 3 seconds to turn on or off the alarm
function.
key: In the setting mode, press this key to change the parameter.

Datalogger Thermo-Hygro-Barometer / EN
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(9) Micro-USB
(10) Alarm output jack: Allow output of a alarm signal is available from this jack.
(11) AC adaptor power input jack (DC 9V).
(12) Battery cover.
(13) microSD CARD 4GB.
(14) Tripod mounting: 1/4”-20 unc-female thread.
4-2 Description of Display:
ALM
SET HOLD
A: Datalogging mode indication.
M: Appears once data is stored into the memory.
M: Manual memory address number indication.
R: Read mode indication.
R: Recall manual memory address number indication.
MXt: Temperature maximum value indication.
MNt: Temperature minimum value indication.
YlM d-h m:s : Real-time or MX/MN recorded stamp time indication.
Td: Dew point temperature indication.
If air is cooled and gaseous water vapor begins to condense in the liquid
phase, the temperature at which condensation occurs is defined as the
dew point temperature.
Td/f: Dewpoint / Frostpoint Temperature indication.
When the dew point falls below freezing it is called the frost point
temperature. Where air is cooled enough to become saturated, but
forms ice instead of dew.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 7
T: Difference of T and Td/f (T=T-Td/f) indication.
Tw: Wetbulb temperature indication.
Traditionally, the wet bulb temperature is the temperature indicated by a
thermometer wrapped in a wet cotton sheath.
а: Absolute humidity indication.
Absolute humidity refers to the mass of water in a unit volume of moist air
at a given temperature and pressure.
h: Enthalpy indication.
Enthalpy is the amount of energy required to bring air to its current state
from a dry air at 0℃.
HI: Heat Index indication.
The Heat Index is determined by using the dry bulb temperature and relative
humidity.
It is based upon charts available from the U.S. National Weather Service.
The Heat Index represents how an average person feels relative to climate
conditions. For a given temperature, the higher the humidity, the higher the
heat index.
The Heat Index is defined over a temperature range of 70℉to 120℉(21℃
to 49℃) and a relative humidity range of 30% to 99%. Outside of this range,
the meter will show dashes in the display for the Heat Index.
Humdx: Humidex indication.
The Humidex, used primarily in Canada, works on the same concept as
the Heat Index. The values are slightly different. The Humidex is
defined over a temperature range of 70℉to 109℉(21℃to 43℃) and a
relativehumidityrange of 20% to99%. Outside of this range, the meter
will show dashes in the display for the Humidex.
g/m³, gr/ft³: Absolute humidity units.
kJ/kg, Btu/lb: Enthalpy units.
℃, ℉: Temperature units.
P3h: Pressure tendency indication.
Pressure tendency is the difference between actual pressure and pressure
3 hours before. If the meter is not turned ON for at least 3 hours, the meter
will show dashes in the display for the P3h. Interval of refresh of pressure
tendency display is 5 minutes.
X: Mixing ratio indication.
Mixing ratio is the ratio of water vapor mass to the mass of dry gas.

Datalogger Thermo-Hygro-Barometer / EN
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Pw: Water vapor pressure indication.
Water vapor pressure is the pressure exerted by the water vapor present in
air.
Pws: Saturation vapor pressure indication.
Saturation vapor pressure temperature dictates the maximum partial
pressure of water vapor.
g/kg, gr/lb: Mixing ratio units.
hPa, lb/in²: Water vapor pressure units.
%RH: Relative humidity units.
Relative humidity (RH) is defined as the ratio of the partial water vapor
pressure (Pw) to the water vapor saturation pressure (Pws) at a particular
temperature: %RH=100%xPw/Pws
hPa, inHg, mmHg: Air pressure units.
H2O ppmv: It is defined as the ratio of water vapor to total (moist) gas, and is
expressed by volume.
H2O ppmw: It is defined as the ratio of water vapor to total (moist) gas, and is
expressed by weight/weight.
MXp: Pressure maximum value indication.
MNp: Pressure minimum value indication.
MXh: Humidity maximum value indication.
MNh: Humidity minimum value indication.
HOLD : Data hold mode indication.
START: Timer datalogging start-time setting mode indication.
STOP: Timer datalogging stop-time setting mode indication.
SET : Setting mode indication.
: No-cycle timer datalogging mode indication.
: Auto-cycle time datalogging mode indication.
: No-cycle timer datalogging stop indication.
: Battery capacity indication.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 9
: Auto power off indication.
ALM: Enable the alarm function indication.
: Setting the high limit value indication.
: Setting the low limit value indication.
ALM
: Setting the hysteresis value indication.

Datalogger Thermo-Hygro-Barometer / EN
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5. OPERATING INSTRUCTIONS
5-1 Selecting Measurement units
1. Press key to turn on the meter.
2. Press SET keyone time to enter the units setting mode, the “SET ”
mark is displayed.
3. Press key to select “℃”or “℉”this will now flash on the display.
If “℃”is selected, the quantities measured and calculated will use a metric
unit, if “℉”is selected, it will use non-metric unit.
Quantity
Abbreviation
Metric Unit
Non-Metric Unit
Dewpoint/Frostpoint Temperature
Td/f
℃
℉
Dewpoint temperature
Td
℃
℉
Absolute humidity
a
g/m³
gr/ft³
Mixing ratio
x
g/kg
gr/lb
Wetbulb temperature
Tw
℃
℉
Humidity air volume/moist air
volume (by volume or by weight)
H2O
ppmv/ppmw
ppmv/ppmw
Water vapor pressure
Pw
hPa
lb/in²
Water vapor saturation pressure
Pws
hPa
lb/in²
Enthalpy
h
kJ/kg
Btu/lb
Difference of T and Td/f
T
℃
℉
4. Press key to store the desired unit and to enter the air pressure unit setting
mode.
5. Press key to select “hPa”, “inHg”or “mmHg”.
6. Press key to store the desired unit and exit this mode.
5-2 Setting the Real-Time
The meters internal clock is used in the display and for time-stamping
recorded measurements.
1. Press key to turn on the meter.
2. Press SET key 3 times to enter the real-time setting mode, the “SET
YIM d-h m:s ”mark is displayed.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 11
3. Using key to position the cursor on the date or time element to adjust.
4. Using key to change the selected date or time element value.
5. Press key to complete the action and exit this mode.
5-3 Taking Measurements
1. Press key to turn on the meter.
2. The display will shows the quantities measured air temperature, relative
humidity and pressure reading.
3. Press MODE key to switch display to the following quantities calculated
reading.
Press MODE key for 3 seconds to exit the calculated reading.
4. Press HOLD key, if the displayed value needs to be held. In HOLD mode,
press MODE key to switch the display to the other calculated values and to
display the held date and time. Press HOLD key again to exit the data hold
mode, the “HOLD”mark disappears.

Datalogger Thermo-Hygro-Barometer / EN
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5-4 Taking Maximum (MX) & Minimum (MN) Recorder Measurements
1. Press key to turn on the meter.
2. Press MX/MN key for 3 seconds to enter the previous recorded data mode,
the “”mark is displayed.
3. To read previously recorded data, press READ key to enter read mode, the
“R”mark is displayed, then press MX/MN key to cycle through the recorded
data, and press MX/MN key for 3 seconds to exit this mode. Otherwise
press MX/MN key again to enter the recorded mode and auto clear the
previous recorded data.
4. Press MX/MN key to cycle through the
a). Maximum reading for temperature (MXt), humidity (MXh) and pressure
(MXp).
b). Minimum reading for temperature (MNt), humidity (MNh) and pressure
(MNp).
c). Maximum reading for temperature (MXt) with its humidity and pressure
reading.
d). Maximum temperature (MXt) occurred date and time.
e). Minimum reading for temperature (MNt) with its humidity and pressure
reading.
f). Minimum temperature (MNt) occurred date and time.
g). Maximum reading for humidity (MXh) with its temperature and pressure
reading.
h). Maximum humidity (MXh) occurred date and time.
i). Minimum reading for humidity (MNh) with its temperature and pressure
reading.
j). Minimum humidity (MNh) occurred date and time.
k). Maximum reading for pressure (MXp) with its temperature and humidity
reading.
l). Maximum pressure (MXp) occurred date and time.
m). Minimum reading for pressure (MNp) with its temperature and humidity
reading.
n). Minimum pressure (MNp) occurred date and time.
Under c, e, g, i, k and m steps, user also can press MODE key to display the
calculated reading.
5. Press MX/MN key for 3 seconds to exit this mode and store the recorded
data to memory.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 13
5-5 Setting the Display Refresh Mode
Battery life depends on select display refresh mode.
In FAST mode, displayis refreshed in shortest possible interval with highest
current consumption.Indynamicmodedisplayisrefreshed inintervals upto5s in
case measured values remain stable. Refresh interval is shortened to 1s onlyif
measured values change. Current consumption in this mode in usual operation is
lower, battery life is up to 4 times longer. The FAST mode is recommend to use
onlyin cases when slower display response is not acceptable.
1. Press key to turn on the meter.
2. Press SET key 2 times to enter the display refresh setting mode, the “SET
”mark is displayed.
3. Press key to select “ ” or “ ” mode.
4. Press key to store the desired mode and exit.
5-6 Taking Alarm Operation
1. Quantity for alarm operation
Alarm setpoints:
A alarm monitors the quantity chosen for the alarm operation. When the
measured value is between the “high”and “low”limit values, the alarm is
OFF. When choosing low value as “high”value and higher value as “low”
value, the alarm is OFF when the measured value is not between the
setpoints. You can also set only one setpoint.
The figure for illustrative examples of the different measurement-based
alarm operation modes.
Hysteresis function is to prevent the alarm operation back and forth when the
measured value is near to the setpoint values. Hysteresis value should be
smaller than difference of the setpoints.
The following figure is for illustrative examples of the different
measurement-based alarm output modes.

Datalogger Thermo-Hygro-Barometer / EN
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Mode 1: Only “high”setpoint set. MODE 2: Only “low”setpoint set.
measured
value
A
A-h
measured
value
time
B+h
B
Alarm is ON when value is
above the setpoint.
Mode 3: Both setpoints set
“high”> “low”.
measured
value
time
A
A-h
B+h
B
measured
value
time
B
B-h
A+h
A
Alarm is ON when value is
outside the setpoints.
Legend
A: “high”setpoint value
Alarm is ON
B: “low”setpoint value
Alarm is ON
h: Hysteresis value
Alarm is OFF
2. Setting the alarm limit values
The air temperature, humidity, pressure and dewpoint quantities available
can be chosen.
a). Press key for 3 seconds to turn on the meter.
Alarm is ON when value is
below the setpoint.
Mode 4: Both setpoints set
“high”< “low”.
Alarm is OFF when value is
outside the setpoints.

Datalogger Thermo-Hygro-Barometer / EN
02/15/17 Version No. 00 15
b). Press SET key 4 times to enter the alarm limit values setting mode, the
“SET ALM ”mark appears for 2 seconds then to enter the
temperature limit value setting mode, the “SET ALM T ℃or ”
mark and the temperature previous limit values are displayed, press 
key to check the temperature, humidity, pressure and dewpoint of
previous limit setting values.
c). To change the temperature limit setting value, press key to select the
temperature limit value setting mode, the “SET ALM T ℃or ”is
displayed.
d). Press MODE key to select the desired alarm mode from mode 1 ( ) to
mode 4 ( ) then press key to confirm.
e). Use key to position the cursor on the limit value element to adjust.
Use keyto change the selected element value. Press keyto confirm.
“ ” mark indication setting the high limit value.
“
ALM
”mark indication setting the hysteresis value, the maximum setting
values is 10℃, 10%RH and 100 hPa.
“ ” mark indication setting the low limit value.
Press key to select the alarm ON ( ) or OFF ( ).
f). Press key to store the temperature setting data.
g). To change the humidity limit setting value, press key to select the
humidity limit value setting mode, the “SET ALM %RH or ”mark
and the humidity previous limit values are displayed.
h). Repeat step d and e above to complete the humidity limit values setting.
i). Press key to store the humidity setting data.
j). To change the pressure limit value, press key to select the pressure
limit value setting mode, the “SET ALM hPa or ”mark and the
pressure previous limit values are displayed.
k). Repeat step d and e above to complete the pressure limit values setting.
l).Press key to store the pressure setting data.
m). To change the dewpoint temperature limit value, press key to select
the dewpoint temperature limit value setting mode, the “SET ALM Td/f
℃or ”mark and the dewpoint previous limit values are
displayed.
n). Repeat step c and d above to complete the dewpoint limit values setting.

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o). Press key to store the dewpoint setting data.
p). Press key again to exit the alarm limit values setting mode.
3. Setting the alarm sound ON/OFF
a). Press keyto turn on the meter.
b). Press SET key 5 times to enter the setting mode, the “SET ”
mark is displayed.
c). Press key to select “ ” or “ ”.
d). Press key to exit.
4. To turn-on or turn-off alarm function
a). Press ALARM key for 3 seconds to turn on the alarm function, the “ALM”
mark is displayed.
b). Press ALARM key for 3 seconds to turn off the alarm function, the “ALM”
mark disappears.
5-7 Taking Data Filtering Measurements
Data filtering for pressure:
Set the averaging time during which the individual pressure measurement
samples are integrated to get an average reading. A minimum of 1s default
averaging time is recommended, the averaging time 60s is WMO averaging
time for barometric pressure measurement.
Data filtering for humidity & temperature: There are three levels of filtering
available. The lowest measurement noise is achieved with the factor filtering.
Setting
Filtering Level
OFF
No filtering (default setting)
STANDARD
Standard filtering. Apporximately 13s moving average.
FACTOR
Weighted average filtering. Approximately 1 minute
average by default (0.030), but configurable by changing
the factor (0.001 ~ 1.000)
1.Press key to turn on the meter.
2. Press SET key 12 times to enter the pressure data filter setting mode, the
“SET hPa”mark is displayed.
3. Press key to set the desired average time from 1s to 1 minute.
4. Presskey to store the average time and to enter the humidityand temperature
data filter setting mode, the “SET ℃%RH ”mark is displayed.

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5. Press key to select the desired filter mode “ ”, “ ” (Standard), or
“ ” (Weighted average).
6. Press key to exit.
If “ ” is selected, press key to position the cursor on the factor value
element to adjust and press key to change the selected element value.
Press key to complete the action and exit.
5-8 Setting the Auto Power off Time
1. Press SET key 6 times to enter the auto power off setting mode, the “SET
”mark is displayed.
2. Press key to select “ ” or “ ” then press key to confirm.
3. If “ ” is selected, press key to position the cursor on the time (m:s)
element to adjust and press key to change the selected time element
value from 30s to 59m59s. Press key to store the auto power off time and
exit, the auto power off mark “”is displayed.
In the maximum/minimum recorder mode, alarm mode, datalogging mode and
auto-cycle timer datalogging the auto power off function is disabled, the auto
power off mark disappears.
5-9 Manual data Memory and Read Mode
1. To clear the manual memorized data
a). Press SET key 10 times to enter this mode, the “SET ”mark
is displayed.
b). Press key to select “ ” or “ ”, then press key to exit.
If “ ” is selected, then memorized data will be cleared.
2. To memorized the reading
a). By pressing MEM key each time, it will store one set of the measured
value into the memory. At this moment the LCD will show the memory
address number and the “M”mark will disappear one time. Total
memory size is 99 sets.
b). When the memory is full, the LCD will show “M ”mark.
3. To recall the memorized data.
a). Press READ key to enter the READ mode, the LCD will show “R”mark
and the memory address number.
b). Press READ key to select the desired memory address number data for
display.