Sper-scientific 850076 Infrared IR Temperature Probe Manuel d'utilisateur télécharger pdf (Page 3)

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III. MEASUREMENT PROCEDURES

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Plug probe into the PROBE INPUT SOCKET.

•

Make sure the PROBE LOCK is in the lock position

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Turn on the instrument by pressing the POWER button.

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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

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.

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Sper-scientific 850076 Infrared IR Temperature Probe Manuel d'utilisateur Page 3