FLUS ET-951 User manual

User's Manual
Professional Humidity & Temperature Meter
Please read this user's manual thoroughly before using
this unit and keep it properly for your future reference.

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Contents
1. Safety....................................................... 2
2. Introduction ............................................... 3
3. Features ................................................... 3
4. Specifications ............................................ 4
5. Meter Description ....................................... 5
6. LCD Display Description .............................. 8
7. Operation Instruction................................... 9
8. Notes ..................................................... 13
9. Accessories............................................. 13

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1. Safety
Read the following safety information carefully before
attempting to operate or service the meter.
Use the meter only as specified in this manual; otherwise,
the protection provided by the meter may be impaired.
▲ Environment conditions:
nRH≤90％（Non-Condensation）
nOperating Temperature: -30℃～60℃
▲ Maintenance
nRepairs or servicing not covered in this
manual should only be performed by qualified
personnel.
nWipe the unit with a dry soft cloth. Do not use
abrasives or solvents on this instrument.
▲ Safety Symbol
Comply with EMC

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2. Introduction
The Humidity & Temperature Meter is designed with a high
accuracy temperature & humidity sensor, providing high
accuracy, fast response and stable readings. It is widely used
for monitoring and collecting data of environment temperature
and humidity.
This meter is widely used for measurement of temperature
and humidity of room, metro, library,commercial center,
communication center room, etc.
3. Features
Temperature units: /▲℃℉
MAX record▲
MIN record▲
Data hold▲
Dew Point Temperature▲
Backlight▲
Resolution 0.1%RH, 0.1▲℃
Calibration function▲

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4. Specifications
Measuring
range Accuracy
0～20%RH, 80%～100%RH: ±4.0%
20%～40%RH，60%～80%RH: ±3.0%
Humidity
0～100%RH
40%～60%RH: ±2.0%
-35℃～-10℃, 70℃～100℃: ±1.0℃
-10℃～70℃: ±0.5℃
-31℉～+14℉,158℉～212 )℉: ±1.8℉
Temp. -35℃～100℃
14℉～158℉: ±0.9℉
Dew Point
Temp.
-35～100℃
-31℉～212℉25 ,40%
℃～100%RH : ±1.0 (±1.8 )℃℉
Dimension
(L*W*H) 185*66*33(mm)
Weight 237g

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5. Meter Description

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(1) Temperature & Humidity sensor
(2) Metal bar
(3) LCDdisplay
(4) Backlight ON/OFF key
(5) SET key
(6) Data hold key
(7) MIN/DOWN key
(8) Power ON/OFF key
(9) Dew point temperature key
(10) MAX/UP key
(11) / temperature units℃℉ key
(12) Tripod nut
(13) Battery compartment

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6. LCD Display Description
①Humidity unit icon
②Humidity record
③Temperature record
④Temperature units icon
⑤Dew point temperature units icon
⑥Autopowerofficon
⑦Batteryicon
⑧MAX/MINicon
⑨Dataholdicon

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7. Operation Instruction
(1) Open battery cover and install a 9-volt battery in the
battery compartment.
(2) Power ON: Turn the meter on by pressing " " button for
1 second until the LCD is lighted, then loose the button.
(3) Power OFF: Turn the meter off by pressing and holding
"" button for approx. 3 seconds until the LCD is
switched off, then loose the button.
(4) MAX record: press " " button once, MAX icon will
appear on the LCD, which indicates the current maximum
reading, press this button again to exit MAX record
display.
(5) MIN record: press " " button once, MIN icon will
appear on the LCD, which indicates the current maximum
reading, press this button again to exit MIN record display.

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(6) In the measuring mode, press " " button to convert the
temperature units / .℃℉
(7) Auto power off icon, the meter will automatically
turn off after approx. 15 minutes of inactivity.
(8) Dew Point Temperature: press " " button once, UNITS
icon will appear on the LCD, which indicates the dew point
temperature measurement is conducting, press this button
again to exit this function.
(9) Hold: press " " button once, "HOLD" icon will appear
on the LCD, which indicates the data is freezed. To
release the held reading, press the button again.
(10) Humidity Calibration
In the Power OFF mode, keep pressing " " button then
power the meter on, after the LCD displays, release all
the buttons, the LCD will display as follows:

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The upper reading is the real humidity value, the middle
reading is the calibration value and the lower one is the MAX
icon, which indicates the calibration value is above 75%RH.
Press “▲” or “▼” button to increase or decrease the value, after
finished calibration, press "HOLD" button to exit the Humidity
Calibration Mode and the calibrated value will be kept
automatically.
If not exit the mode, press SET button once, the MIN icon

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will appear on the lower part of LCD, which indicates the
calibration value is below 35%RH, Press “▲” or “▼” button to
increase or decrease the value, after finished calibration, press
"HOLD" button to exit it and the calibrated value will be kept
automatically, LCD display will as below:
11) Backlight ON/OFF；In the Power ON mode, press " "
button once, the backlight will be on, press this button
again to turn off it.

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8. Notes
① This meter has already been calibrated before delivery.
Do not revise the calibration parameters without professional
personnel and device. The recommended calibration period is
one year.
② Repairs or servicing not covered in this manual should
only be performed by qualified personnel.
③ Wipe the unit with a dry soft cloth. Do not use
abrasives or solvents on this instrument.
④ Remove the battery when the meter is to be stored for
long periods of time to avoid battery leakage.
⑤ Replace new batteries when the low battery icon "
" appears.
9. Accessories
① User's manual
② 9V battery
③ Tripod(Optional)

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