78
Users Manual
46
Specifications
Accuracy is specified for a period of one year after calibration, at 18°C to 28°C (64°F to 82°F) with relative humidity to 90%.
AC conversions are ac-coupled, average responding, and calibrated to the rms value of a sine wave input. Accuracy speci-
fications are given as:
±([% of reading] + [number of least significant digits])
Maximum Voltage Between any Terminal and Earth Ground
300 V
Fuse Protection 15 A 600 V FAST Fuse
Display Digital: 4000 counts, updates 4/s
Bar Graph: 64 segments, update rate 40/s
Frequency: 9,999 counts, updates 3/s
Operating Tempera-
ture
0°C to 55°C (32°F to 131°F)
Storage Temperature -40°C to 60°C (-40°F to 140°F)
Temperature Coeffi-
cient
0.1 x (specified accuracy) per °C ambient (<18°C or
>28°C). When measuring temperature, 0.04% + 0.1°C
per °C
Relative Humidity 0% to 95%, to 30°C (86°F)
0% to 75%, to 40°C (104°F)
0% to 45%, to 55°C (131°F)
Electromagnetic
Compatibility
In an RF field of 1 V/m on all ranges and functions:
Total Accuracy = Specified Accuracy +0.7% of range.
Performance above 1 V/m is not specified.
Battery Type 9 V, NEDA 1604 or 6F22 or 006P
Battery Life Alkaline: 500 hrs (typical) Carbon-zinc:300 hrs (typical)
Continuity Beeper 4096 Hz
Shock, Vibration Per MIL-T-28800 for a Style D, Class 3 Instrument
Altitude 2000 meters (6562 feet)
Size (HxWxL) 1.12 in x 2.95 in x 6.55 in (2.8 cm x 7.5 cm x 16.6 cm)
Weight 12 oz (340g)
Safety Complies with ANSI/ISA S82.01-1994, CAN/CSA 22.2
No. 1010.1:1992 to 300 V Overvoltage Category II. UL
license pending to UL3111-1. TUV License to
EN61010-1.
Safety Approvals CSA Certified, TUV Product Service licensed, UL
EMI Regulation Complies with FCC Part 15, Class B, VDE 0871B,
Vfg. 243-1991
This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,
and (2) this device must accept any interference re-
ceived, including interference that may cause unde-
sired operation.
Inductive Pickup Input: Magnetic field from sparkplug
Output: Pulse to trigger Fluke 78
Thermocouple Type: K (Chromel vs. Alumel)
Not suitable for immersion in liquid
Accuracy: +/-1.1°C (2°F) between 0°C to 260°C
(32°F-500°F).
Typically within 1.1°C (2°F) of NBS tables for tem-
peratures between -40°C (-40°F) to 0°C (32°F).
Temperature Range: -40°C to 260°C.
(-40°F to 500°F). Above 260°C (500°F), toxic gas
might be emitted
NOTE: The temperature range is primarily a function
of the thermal limitations of the thermocouple's insula-
tion
Cable Insulation: Teflon
MIN MAX Recording Accuracy: Specified accuracy of measurement func-
tion +/-16 digits for changes > 200 ms in duration (+/-
52 digits in 400
J
)
Nominal Response time (5 to 100% of Range) 100 ms
to 80%
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