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HD550-EU-EN V1.1   07/13 

Range Specifications 

Function Range 

Resolution 

Accuracy 

-148°F to -20°F 

(3.0% r 4°F) 

-20°F to 2501°F 

(3.0% r 2°F) 

-100°C to -30°C 

(3.0% r 2°C) 

Temp  
(type-K) 

-30°C to 1372°C 

1000 

0.1°<1000 

(3.0% r 1°C) 

-58 to -4°F 
-50 to -20°C 

0.1°F/°C ±9.0°F 

5.0°C 

IR Temp 

-4 to 932°F 
-20 to 500°C 

0.1°F/°C 

±2% reading or 
±4°F/2°C 

Air Temp. 

-4 to 140°F 
-20 to 60°C 

0.1°F/°C 

±(2% r 
2°F/1°C) 

10% to 90% 

0.1%RH 

±2% RH 

%RH 

<10% and >90% 

0.1%RH 

±3% RH 

Wet Bulb 

-6.88 to 140°F 
-21.6 to 60°C 

0.1°F/°C 

Dew Point 

-90.4 to 140°F 
-68 to 60°C 

0.1°F/°C 

GPP 

0 to 999 GPP 

0.1 GPP <100 GPP 
1 GPP >100 GPP 

g/kg 

0 to 160 g/kg 

0.1 g/kg<100 g/kg 
1 g/kg>100 g/kg 

Calculated from RH  
and air temperature 
measurements 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Copyright

 

©

 

2013

 

FLIR

 

Systems,

 

Inc.

 

All

 

rights

 

reserved

 

including

 

the

 

right

 

of

 

reproduction

 

in

 

whole

 

or

 

in

 

part

 

in

 

any

 

form

 

ISO

9001

 

Certified

 

www.extech.com

 

Summary of Contents for HD550

Page 1: ...User Guide Heavy Duty Psychrometer IR Thermometer Model HD550...

Page 2: ...reliable service Features Triple digital LCD display Fast response all data is calculated four times per second Standard type K NiCr NiAl Thermocouple input jack suitable for any style of type K probe...

Page 3: ...y record Max Min button 10 IR Measurement button 11 F C units button 12 Lower display HOLD button 13 Lower display record Max Min button 14 Backlight button 15 Power button NOTE Battery Compartment Ti...

Page 4: ...es The Laser pointer allows the user to aim accurately when taking non contact measurements 1 Turn ON the meter using the button 2 The IR sensor and laser pointer are located at the top of the meter 3...

Page 5: ...The meter will automatically turn off after 15 minutes of operation if no buttons are pressed during this period Auto power off can be disabled by Holding the IRT button and then pressing the button t...

Page 6: ...R Theory IR thermometers measure the surface temperature of an object The meter s optics sense emitted reflected transmitted energy that is collected and focused onto the meter s detector The meter s...

Page 7: ...Specifications Display Dual Display Multi function LCD with 9999 counts Data Hold Freezes displayed reading Sampling rate 1 reading per second Sensors Relative Humidity Capacitance type Air Temp Ther...

Page 8: ...eading or 4 F 2 C Air Temp 4 to 140 F 20 to 60 C 0 1 F C 2 reading 2 F 1 C 10 to 90 0 1 RH 2 RH RH 10 and 90 0 1 RH 3 RH Wet Bulb 6 88 to 140 F 21 6 to 60 C 0 1 F C Dew Point 90 4 to 140 F 68 to 60 C...

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