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RS-232 serial standard,
IEEE-488 (GPIB) optional, Conforms to IEEE-488.1, Capability: AH1,
SH1, T6, L4, DC1
Operating Temperature
Range
Full accuracy: 13°C to 33°C
Absolute: 0°C to 55°C
AC Power
115 VAC (±10%), 50/60 Hz, 10 W, nominal 1 A maximum
230 VAC (±10%), 50/60 Hz, 10 W (optional)
Detachable power cord
DC Power (optional)
10–14 VDC (±10%), 1 A maximum
(220 mA typical, normal mode; 120 mA typical, power saver mode)
Size
5.6 in. (14.3 cm) wide x 7.1 in. (18.1 cm) deep x 2.4 in. (6.1 cm) high
Weight
2.2 lbs. (1.0 kg.)
Safety
OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC
1010-1
1
Accuracy specifications apply within the recommended operating temperature range. Accuracy limits are
increased by a factor of the temperature coefficient outside this range.
2
Short-term accuracy includes nonlinearity and noise uncertainties. It does not include drift or calibration
uncertainties.
3
The temperature range may be limited by the sensor.
4
Temperature accuracy is for the 1504 only. It does not include probe uncertainty or probe characteriza-
tion errors. Accuracies are typical with 10 k
Ω
NTC thermistors.
3.2 Environmental Conditions
Although the instrument has been designed for optimum durability and trou-
ble-free operation, it must be handled with care. The instrument should not be
operated in an excessively dusty or dirty environment. Maintenance and clean-
ing recommendations can be found in the Maintenance Section of this manual.
The instrument operates safely under the following conditions:
•
Operating temperature range: Absolute 0–55°C (32–131°F); [full accu
-
racy 16–30°C (61–86°F)]
•
Ambient relative humidity: maximum 80% for temperature < 31°C, de
-
creasing linearly to 50% at 40°C
•
Pressure: 75kPa–106kPa
•
Mains voltage within ±10% of nominal
•
Vibrations should be minimized
•
Altitude less than 2,000 meters
•
Indoor use only
1504 Thermometer Readout
User’s Guide
10