background image

3

Warning: Remove batteries when not use to prevent battery leakage (Out of warranty) and 
power consumption. 

OPERATION: 

1.

For each operation, make sure you are using fresh batteries, same brand, same power of
batteries is required, and otherwise meter shows erratic readings or leakage. Warranty is void if
not follow the notices. (Note

remove batteries when not use

)

2. You may use an optional AC/DC adaptor to operate supply power to operate the meter.
3.

Make sure sensor probe and meter are well connected, 

meter shows “00000” (O

2

 sensor is warming

up) on each display.

4.

Don’t attempt to detach sensor probe from meter while in operation or during datalogging. 

Meter

shows erratic readings and might damage sensor or working fan.

PROBE LED INDICATION: 

Color 

Description 

Cable connected to meter and meter is powered on. 
Fan is in working conditon. When the fan is inactivated, red light is always on. 
When the fan is activated, red light is flashing. 

POWER:   

NOTE:

 Make sure you have connected the probe to the meter before power on. 

Momentarily press 

PWR

 button to turn on the meter, press and hold 

PWR

 button to turn off meter. 

There are two ways to provide power: (a) AAA batteries x 6pcs, or (b) AC/DC adaptor 9V. 
(a) Battery icon shows up when power is weak, replace with new batteries immediately as the

readings now on LCD are incorrect due to weak power.

(b) For short time measurement, you may power on by batteries. For datalogging or long time using, you

must connect with an AC/DC adaptor.

AUTO POWER OFF: 

Meter will turn off automatically in 15 minutes when no use, to disable 

Auto   

Power Off

 function by press 

HOLD

 and 

PWR 

button when meter is OFF, LCD 

shows “

n

”, then turns to normal measurement mode. When the power is weak, 

battery icon 

  displays on screen and O

2

 reading might not correct, strongly 

recommend replacing with new batteries, 

DO NOT

 try to use used batteries to 

operate.

MEASUREMENT:

Press 

PWR

 button, meter shows full screen (icons) in one second, and after warming up for few minutes, 

meter goes to normal measurement mode, green LED turns on and electric fan in probe is working, now you 
get current O

2

, Temperature and RH% readings. 

4

The electric fan is always on to make sure meter is in measurement status until you turn off the meter. 
If you think ambient is stable enough or you don’t operation in few minutes, you may turn off the fan by short 
pressing 

SET 

button. 

MAX/MIN: 

Press the button to review maximum or minimum readings since powered on. To clear maximum 

and minimum readings, long press

MAX/MIN

button, “

Clr

” shows at the button of LCD. Once temperature,   

humidity or concentration of gas exceeds current min or max values, readings will be updated. 

UNIT: 

Press button to switch units °C or °F of Temp., DP and WB.   

TEMPERATURE & HUMIDITY:

 Press

 MODE 

button momentarily to toggle Temperature, Humidity, Dew 

Point (DP), Wet Bulb (WB) temperature. 

O

2

 ALARM SETTING (Low alarm): 

Long press 

SET 

button more than 2 seconds to enter O

2

 alarm setting mode. The default of O

2

 is 15.0%, the 

setting range of O

2

 is from 5.0% to 30.0%. Press 

SET

 again to save the changes. 

HOLD:

increase value

BKLT:

 decrease value

MODE:

 move to left digit

MAX/MIN: 

move to right digit

When meter enter setting mode, the 

electric fan

 will

 turn off 

automatically, when you leave setting mode,

the electric fan will turn on automatically again.  

SELF-CALIBRATION O

2

:   

Power on the meter, long press 

MODE 

buttons for 6 seconds to enter calibration mode, the first layer of LCD 

shows “21.0”, which means O

2

 should be calibrated to 21.0%; the second layer of LCD shows “17.0”, which 

means current input (

Do not adjust current value, or it will be inaccurate

);

 “CAL”

 is flashing and shows

at the bottom of the screen around 30 seconds, when calibration finished, it will show 

“End”

to let user know 

the calibration has done. 

NOTE: Oxygen makes up 21.0% of the air; user can do calibration under normal environment. 

Temperature, Humidity Offset: 

The meter is designed with precision and free maintenance capacitor humidity sensor and thermistor 
temperature sensor. For long time usage, or special accurate purpose, user may do the offset function to 
adjust Temperature and Humidity per standard value.

WARNING: DO NOT USE THIS FUNCTION WITHOUT STANDARD INSTRUMENT. 

NOTE:

 Under power off condition. press and hold 

MODE+BKLT

 buttons by left fingers, press and hold 

MAX+PWR

 button by right fingers, LCD shows 0.0C and SET, now release all fingers, to add the value by 

pressing 

HOLD

 button, to reduce value by pressing 

BKLT

 button. If you want to escape temperature 

adjustment to RH%, short press 

SET

 button, and follow the same steps. Long press 

SET 

button to save the 

adjustment value, LCD shows SAVE in 2 seconds, then power off the meter, the offset function is completed 
and values are adjusted. 

Summary of Contents for HHAQ-104

Page 1: ...cifications without notice WARNING These products are not designed for use in and should not be used for human applications Servicing North America U S A Omega Engineering Inc One Omega Drive P O Box...

Page 2: ...ifications without notice WARNING These products are not designed for use in and should not be used for human applications Servicing North America U S A Omega Engineering Inc One Omega Drive P O Box 4...

Page 3: ...32 T mm Probe size 145 H x 33 W x 33 T mm PU cable 657mm 20mm Length Cable Tube Approx 1Meter coil cable 30cm soft tube Power AAA batteries x 6 pcs or AC DC adaptor 2 ATTENTION Do not attempt to open...

Page 4: ...T mm Probe size 145 H x 33 W x 33 T mm PU cable 657mm 20mm Length Cable Tube Approx 1Meter coil cable 30cm so tube Power AAA ba eries x 6 pcs or AC DC adaptor 2 ATTENTION Do not attempt to open the m...

Page 5: ...t is stable enough or you don t operation in few minutes you may turn off the fan by short pressing SET button MAX MIN Press the button to review maximum or minimum readings since powered on To clear...

Page 6: ...t is stable enough or you don t operation in few minutes you may turn off the fan by short pressing SET button MAX MIN Press the button to review maximum or minimum readings since powered on To clear...

Page 7: ...lover or Key start mode to record data you don t have to reset up each parameter or setting from PC after downloading i e After download stored data to PC meter may long press BKLT button to repeat re...

Page 8: ...lover or Key start mode to record data you don t have to reset up each parameter or setting from PC after downloading i e After download stored data to PC meter may long press BKLT button to repeat re...

Page 9: ...ple basis within total memory points 2 Set sample rate start mode to record Select hour 1 6 minute 0 59 second 0 59 time interval Select 5 start modes from l Immediately l Schedule l Real time PC is a...

Page 10: ...ple basis within total memory points 2 Set sample rate start mode to record Select hour 1 6 minute 0 59 second 0 59 time interval Select 5 start modes from l Immediately l Schedule l Real time PC is a...

Page 11: ...AAA x 6 pcs or AC DC adaptor and check again Or sensor is damaged Normally LED on probe turns red Q2 Readings are freeze A2 Make sure you are using HOLD function otherwise make sure the cable is well...

Page 12: ...AAA x 6 pcs or AC DC adaptor and check again Or sensor is damaged Normally LED on probe turns red Q2 Readings are freeze A2 Make sure you are using HOLD function otherwise make sure the cable is well...

Page 13: ...OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR P...

Page 14: ...OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR P...

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