Fluke 561R Thermometer Display, Specifications, Distance and Spot Size, Switching between C and F

Thermometer Display Locating a Hot and Cold Spot

Specifications

1 2

8

7

1Laser “On” symbol

2SCAN or HOLD

3ºC/ºF symbol (Celsius/Fahrenheit)

4Primary temperature display

5Secondary temperature display

6Emissivity LO, MED, HI

7Temperature values for the MIN, MAX, DIF, KTC. KTC indicates the thermocouple temperature.

3

4

5

6

Distance and Spot Size

	132 mm @
75 mm @	1500 mm	S
900 mm

38 mm @

300 mm

5.3 " @

3 " @ 60 "

1.5 " @ 36 "

12 "

D

D:S=12:1

Infrared

Measurement Range	-40 °C to 550 °C (-40 °F to 1022 °F)
Spectral Range	8 to 14 microns
Accuracy	±1 % or ±1 °C (2 °F); < 0 °C (32 °F),
	±1 °C (2 °F) ±0.1°/1°
	(Assumes ambient operating temperature of
	23 to 25 °C (73 to 77 °F))
Repeatability	±0.5 % of reading or ±1°C (2 °F)
Display Resolution	0.1 °C (0.1 °F)
Secondary Display Information	Maximum, Minimum, Differential, KTC
Response Time (95 %)	500 ms
Distance to Spot (D:S)	12:1
Emissivity Adjustment	Three settings: low (0.3), medium (0.7),
	high (0.95)

Contact Probe Input

Input Temperature Range	-40 °C to 550 °C (-40 °F to 1022 °F)
Input Accuracy	Input accuracy +/- 1.1 °C (+/- 2 °F)
Display Resolution	1 °C (1 °F)

Laser

Sighting	Single point laser
Power	Class 2 (II) operation; Output <1 mW,
	wavelength 630 to 670 nm

Bead Thermocouple Probe

Type	Type K with miniconnector
Measurment Range	-40 °C to 260 °C (-40 °F to 500 °F)
Accuracy	±1.1 °C (2.0 °F) from 0 °C to 260 °C (32 °F to
	500 °F). Typically within 1.1 °C
	(2.0 °F) from -40 °C to 0 °C
	(-40 °F to 32 °F)

8 Low Battery symbol. Appears when the battery charge	Field of View
is < 25%

Connecting the Temperature Probe

YesNo

Switching between °C and °F

Switch

Cable Length	1 m (40 in) terminated with Type K
	thermocouple beads

Electrical

Power Supply	2 AA Batteries (alkaline or NiCD)
Power Consumption	At least 12 hours battery life
Physical
Weight	0.322 kg (0.7099 lb)
Size	17.69 cm (6.965 in) x 16.36 cm (6.441 in) x
	5.18 cm (2.039 in)

Environmental

Operating Temperature Range	0 °C to 50 °C (32 °F to 120 °F)
Relative Humidity	0 to 90 %, noncondensing up to 30 °C (86 °F)
Storage Temperature	- 20 °C to 65 °C (-4 °F to 150 °F)
Optional Accessories	Soft Case

With probe inserted, the 561 stays on for 10 minutes (with laser off) after trigger is released.