Sper Scientific 850076 Infrared IR Temperature Probe - Manual (Page 3)

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III. MEASUREMENT PROCEDURES
• Plug probe into the PROBE INPUT SOCKET.
• Make sure the PROBE LOCK is in the lock position
• Turn on the instrument by pressing the POWER button.
• Point the probe toward the source to be measured. The distance-to-
spot (D/S) ratio is approximately 7 to 1. Press the °C/°F (A) button to
select Centigrade or Fahrenheit. The temperature is displayed on the
LCD.
Refer to the Environmental Quality Meter 850071 Instruction Manual for
complete instructions about Hold, Max./Min, RS232, Auto Shut Off, and
other functions.
Temperature Adjustment
Environmental conditions such as low temperatures and rapid temperature
changes may cause the reading to drift by 1 to 3 degrees. If a deviation
occurs, slightly turn the temperature adjustment until a correct reading is
obtained.
Field Distance/Spot (D/S)
The distance-to-spot factor is approximately 7-to-1. The object must be
larger than the spot size as calculated by the Distance/Spot ratio. For an
accurate measurement, a 1.5 times distance/spot size is recommended.
Emissivity
The probe has an emissivity value of 0.95, which will cover 90% of the
typical applications. If the emissivity value of the object is not 0.95 or if it's
surface is highly reflective, apply masking tape or a paint with a 0.95 emis-
sivity value. Clean the surface if it is covered with frost or other matter
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IV. SPECIFICATIONS
Unit of Probe Resolution Accuracy
ºC -10 ~ 300
1°
ºF 14 ~ 572
The greater of the two:
±3°C, or ±3% of the reading.
Operating Temperature (meter) 0°C to 50°C (32°F to 122°F).
Operating Humidity Max. 80% RH.
IR Sensor Thermocouple pie.