Справочник Пользователя для Fluke 561 Infrared Thermometer Optics 12/1 -40 to +550 °C 2558118

12 

1.

 

Press 

D

 to select emissivity. Press 

A

 to select LO for bright contacts, or MED for darkened 

contacts. 

2.

 

Press 

C

and the press 

A

 to select MAX. 

3.

 

Measure line and load side of one pole without releasing trigger. 

4.

 

A temperature difference between the line and load sides of a pole indicate increased resistance of 
one point and a contactor may be failing. 

1.

 

Press 

D

 and then press 

A

 to set emissivity to LO for uninsulated connectors or HI for plastic 

encased relays or for bakelite enclosed relays or insulated connectors. 

2.

 

Press 

C

 and then press

 

A

 to select MAX. 

3.

 

Start the scan. 

4.

 

Measure the relay casing, looking for hot spots. 

5.

 

Measure electrical connections on relay terminals looking for hot spots. 

1.

 

Press 

D

 and then press 

A

 to set emissivity to HI for paper covered fuse body or insulated 

connections. 

2.

 

Press 

C

 and then press 

A

 to select MAX. 

3.

 

Scan the paper covered length of fuse. 

4.

 

Without releasing the trigger, scan each fuse. Unequal temperatures between fuses may indicate 
voltage or amperage imbalance. 

5.

 

Press 

D

 and then press 

A

 to select LO, for metal fuses end caps and uninsulated buss 

connections. 

6.

 

Press 

C

 and then press 

A

 to select MAX. 

7.

 

Scan each end cap on each fuse. 

1.

 

Press 

D

 and then press 

A

 to select LO emissivity for uninsulated connectors or buss 

connections or HI for insulated connections. 

2.

 

Scan the conductor, moving toward direction of electrical connector (quick connect, wire nut, buss 
connection, or lug).