OPERATING MANUAL THERMALERT MONITORING THERMOMETER TH-8 CONTENTS Section 1.0 INTRODUCTION 2.0 INITIAL INSTALLATION 3.0 PRECAUTIONS 4.0 DIRECTIONS FOR USE 5.0 REPLACING BATTERIES 6.0 CHECKING CALIBRATION 7.0 AUXILIARY OUTPUT 8.0 SPECIFICATIONS 9.0 TEMPERATURE MEASUREMENT WITH THERMOCOUPLES 10.
OPERATING INSTRUCTIONS THERMALERT MONITORING THERMOMETER, TH-8 1.0 The Physitemp Thermalert series Clinical Monitoring Thermometers are compact, digital instruments for continuous temperature monitoring. They are all battery operated. Model TH-8 has 3 probe inputs for monitoring of up to 3 sites, and provides a choice of reading in degrees C or degrees F. 2.0 INITIAL INSTALLATION 2.1 The TH-8 thermometer is designed to mount as follows: (a) Flat, on rubber feet provided.
.0 DIRECTIONS FOR USE 4.1 Connect temperature sensor(s) and cable(s). One, two or three of the numbered INPUTS may be used. 4.2 Depress the ON-OFF pushbutton. In the ON position an orange indicator will be displayed within the pushbutton. For several seconds the display should read “1888” as a segment check. Do not use thermometer if any display numeral is incomplete. 4.3 Depress the numbered INPUT SELECT pushbutton which corresponds with the INPUTS connection of the sensor to be monitored.
6.0 CHECKING CALIBRATION 6.1 The Thermalert TH-8 thermometer incorporates an automatic zeroing amplifier which produces near-perfect stability of calibration. A calibration check is not necessary before each use. Under normal circumstances, the instrument will provide years of service without requiring recalibration. 6.
mometer calibration data, and convert from Centigrade to Fahrenheit if necessary by mutiplying by 9/5 and adding 32. Compare this reading with that of the Model TH-8. Note both Fahrenheit readings and any differences on a record sheet. (c) Move the slide switch to the degrees C position. Stir the water bath another time, and again compare the standard thermometer reading with that of the instrument. Record both Centigrade readings and any difference. 6.
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.
9.0 TEMPERATURE MEASUREMENT WITH THERMOCOUPLE SENSORS 9.1 The thermocouple is a simple and widely accepted device for measuring temperature. It comprises two wires of dissimilar metals fused together to form a junction which produces an electrical output proportional to temperature.
Here is a useful rough rule: Heat leakage effects are substantially reduced when an amount of probe equal to 10 or more sheath diameters is immersed or laid on the suface. For example, with a probe of 1/16” diameter, 10 x 1/16” = 10/16 = .625 = the minimum immersion depth. 9.7 Errors between thermocouple probes. All Physitemp probes and sensors are made with thermocouple wire that has been specially tested to meet our own stringent standards. Our probes are guaranteed accurate to within 0.
.0 REPAIRS AND RECALIBRATION 10.1 In the event that a Thermalert Monitoring Thermometer is to be returned for repair and recalibration, please pack it with care and send it prepaid to: Physitemp Instruments, Inc Service Departement 154 Huron Avenue Clifton, NJ 07013 USA Please include with the instrument: (1) (2) (3) A note describing any problems encountered. The name and telephone of the user or other person we can contact. The complete return address for shipping. 10.
PHYSITEMP INSTRUMENTS INC 154 Huron Avenue Clifton, NJ 07013 U.S.A. Tel: 973-779-5577 Fax: 973-779-5954 e-mail: physitemp@aol.
