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Maintenance
Replacing the Batteries
Refer to the safety information in Table 1 before replacing the batteries.
1. Turn off the thermometer if necessary.
2. Loosen the screw and remove the battery door.
3. Replace the three AA batteries.
4. Replace the battery door and tighten the screw.
Cleaning the Case and Holster
Use soap and water or a mild commercial cleaner.
Wipe with a damp sponge or soft rag.
51 & 52 Series II
Maintenance
Calibration
To ensure that the thermometer performs to its accuracy specifications, Fluke recommends that you calibrate the thermometer annually, starting one year after purchase.
To calibrate the thermometer, contact Fluke for the
Service Center nearest you or follow the calibration procedure in the service manual listed in "Replacement
Parts and Accessories."
Specifications
Environmental
Operating
Temperature
−
10 o
C to 50
o
C
(14
o
F to 122
o
F)
Storage
Temperature
Humidity
−
40
o
C to
+
60
o
C
(
−
40
o
F to
+
140
o
F)
Non condensing <10
o
C (<50
o
F)
95% RH: 10
o
C to 30
o
C (50
o
F to 86
o
F)
75% RH: 30
o
C to 40
o
C (86
o
F to 104
o
F)
45% RH: 40
o
C to 50
o
C (104
o
F to 122
o
F)
13
51 & 52 Series II
Users Manual
General
Weight
Dimensions
(without holster)
Battery
280 g (10 oz)
2.8 cm
×
7.8 cm
×
16.2 cm
(1.1 in
×
3 in
×
6.4 in)
Certification
Safety
3 AA batteries
P
,
) s
CSA C22.2 No. 1010.1 1992
EN 61010 Amendments 1, 2
CAT I
OVERVOLTAGE (Installation)
CATEGORY I, Pollution Degree 2 per IEC1010-1*
*
Refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient over voltages to an appropriate low level. Example include protect electronic circuits.
80 PK-1 Thermocouple (supplied with thermometer)
Type
Temperature
Range
Accuracy
Type K, Chromel Alumel, bead style
−
40 o
C to
+
260 o
C
(
−
40 o
F to
+
500 o
F)
±
1.1 o
C (
±
2.0 o
F)
Electrical
Measurement
Range
Display
Resolution
J-type:
−
210
(
−
346 o
C to
+
1200 o
F to
+
2192 o
F) o
C
K-type:
−
200 o
C to
+
1372 o
C
(
−
328 o
F to
+
2501 o
F)
T-type:
−
250 o
C to
+
400 o
C
(
−
418 o
F to
+
752 o
F)
E-type:
−
150 o
C to
+
1000 o
(
−
238 o
F to
+
1832 o
F)
C
0.1 o
C / o
1.0 o
C / o
F / K
<
1000 o
F / K
≥
1000 o
14
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