Physitemp Instruments TH8 - Manual (Page 7)

8.0 SPECIFICATIONS
Temperature Range -10 to 60 °C
0 to 140 °F
Degrees F or degrees C user selected
Resolution 0.1°, Fahrenheit or Centigrade
Repeatability 0.1°
Calibration Conforms to National Institute of Standards
and Technology tables (Monograph 125).
Instrument Accuracy 0.1°C (+0.2 degrees) ±1 digit at 25°C ambient
Sensors Any Physitemp type T thermocouple probe.
Ambient Operating Range 15°C - 40°C
Storage 0 to 55° C (32 to 132° F)
Readout 3 1/2 digits, LCD 0.5” high
Display check Automatic “1888” displayed after switch-on tests all segments.
Batteries 4 “C” cells. Alkaline or Mercury may be used.
Carbon-Zinc cells are not recommended.
Battery Life Expectancy 2000 hours continuous (alkaline)
Battery Warning Automatic. LO-BAT appears on display when battery voltage is
low, but several hours of life remain.
Input Check Automatic. INPUT appears on display when input circuit
problem (open sensors) occur.
Auxiliary connection Interface for alarm unit.
Size 3-1/2” H x 6” W x 6 1/4” D
Weight Approximately 3 lbs. with batteries ( 1.4 kg.)
Leakage Current Instrument is isolated from ground and from mounting supports to
5000 volts DC. Low capacitance design minimizes risk caused by
faulty patient grounding during electrosurgery. Leakage is less than
l0
µA at 60Hz.
Safety Features Conforms to NFPA 99 Inhalation Anesthetics 1984 (operating
voltage less than l0V), battery operated, suitable for use with flam-
mable anesthetics. ANSI/AAMI Safe Current Limits for Electronic
Apparatus, 1978
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