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   4. Operation Instructions 

 

 

To  measure  a  temperature,  point  the  unit  at  the  target 
pull

 

the  trigger  and  hold.  Be  sure  to  consider  the  target 

area  inside  the  angle  of  vision  of  this  instrument.  The 
laser spot is used for aiming only.

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

4.3 Displays and Controls 

 

4-3.1

  Displays  –  In  SCAN  mode,  the  instrument  displays 

the current temperature, in Celsius or Fahrenheit, on the 
Main Temperature Display. Selected Advanced Function 
Data is displayed on the Secondary display. The unit will 
HOLD the last reading for 6 seconds after the trigger is 
released. 

4-3.2

  Lock  –  Push  the             button  to  continuously  measure 

and display the temperature without pulling the measuring 
trigger. 

4-3.3

  °C/°F  Switch  –  the  °C/°F  switch  is  located  in  the 

battery compartment and is accessed by following steps 1 
and 2 on pg 6. 

 

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

4-3.4

           Laser  On/Off  Switch  –  the  Laser On/Off  Switch  is 

located  in  the  battery  compartment  and  is  accessed  by 
following steps 1 and 2 below. 

4-3.5

 Battery – Battery is located in the battery compartment 

and  is  accessed  by  following  steps  1  and  2  below. 
Replace battery when indicated by Low Battery symbol.

 

 
 
 
 
 
 
 
 
 
 
 
 

 

 

Содержание DHS235XEL

Страница 1: ...DHS235XEL WD1048 Rev A 04 10 10 High Performance Infrared Thermometer with High D S Ratio Adjustable Emissivity and Built in Laser Sighting ...

Страница 2: ...5 4 1 Quick Start 5 4 2 Unit Diagram 5 4 3 Displays and Controls 5 4 3 1 Displays 5 4 3 2 Lock 5 4 3 3 C F Switch 5 4 3 4 Laser 6 4 3 5 Battery 6 4 4 Advanced Functions 7 4 5 Memory 8 4 5 1 Memory Read 8 4 5 2 Memory Ease 8 4 5 3 memory Record 8 5 Technical Information 9 5 1 Distance to Spot Ratio 9 5 2 Emissivity 9 Emissivity Table 10 6 Maintenance 11 6 1 Lens 11 6 2 Housing 11 ...

Страница 3: ...afety and processing Perform HVAC energy audits 1 Read the following safety information carefully before attempting to operate or service the instrument Only qualified personnel should perform repairs or service not covered in this manual 2 1 Warning DO NOT submerge the instrument in water This product is not designed for use in medical evaluations This product is intended for use in industrial sc...

Страница 4: ...re of 25 C 77 F 5 4 F 3 C From 58 to 4 F 50 to 20 C 3 F 2 C From 4 to 212 F 20 to 100 C 2 From 212 to 2732 F 100 to 1500 C Spectral Range 8 to14µm Repeatability 2 F 1 C Resolution 0 1 F or C Response Time 500 mS Operation Temp 32 to 122 F 0 to 50 C 10 to 90 RH Auto Power Off Automatically after approx 6 seconds Emissivity Adjustable 0 10 to 1 00 F C Switchable YES Backlight YES Laser Sight Switcha...

Страница 5: ...Secondary display The unit will HOLD the last reading for 6 seconds after the trigger is released 4 3 2 Lock Push the button to continuously measure and display the temperature without pulling the measuring trigger 4 3 3 C F Switch the C F switch is located in the battery compartment and is accessed by following steps 1 and 2 on pg 6 5 4 3 4 Laser On Off Switch the Laser On Off Switch is located i...

Страница 6: ...g DATA0 See Memory Erase section below Pressing the or arrows will scroll the DATA location and display the corresponding data on the secondary display The specific parameter such as Actual Max Min Etc will also be displayed No parameter displayed indicates the data is the Actual measurement 4 5 2 Memory Erase when DATA0 is selected the secondary display will display CL This is only used for erasi...

Страница 7: ...inaccurate measurement due to the averaging of the target with the surrounding areas 5 2 Emissivity Emissivity is the relative ability of an object to emit energyby radiation Perfect emitters have an emissivity of 1 emitting 100 of incident energy An object with an emissivity of 0 8 will absorb 80 and reflect 20 of the incident energy Emissivity is defined as the ratio of the energy radiated by an...

Страница 8: ...Lens clean the lens by blowing off loose particles using clean compressed air Gently brush remaining debris away with a camel hair brush Use a cotton swab moistened with distilled water to carefully wipe the lens surface Note DO NOT use solvents to clean the lens 6 2 Housing Clean by wiping with a damp soft cloth Mild detergent may be used as needed 11 Wahl Instruments Inc 234 Old Weaverville Road...

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