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The introduction has a diagram and explanation of the display and controls of the MC-83. It also contains a full listing of all of the items that you should have received with your MC-83. Please take the time to read this section, as it explains some of items that are mentioned in subsequent sections.
Page 3 Contents Introduction..................4 MC-83 Display and Controls ............4 Unpacking Information ..............6 Specifications ................6 Relative Humidity and Temperature Measurement ......7 Freezing the Reading on the Display ..........7 Data Record and Recall Functions...........8 Battery Replacement................9 Display Mode Indicators ..............9 Humidity Calibration ................10 Calibration Procedure ..............11...
Page 4 1. Introduction 1.1 MC-83 Display and Controls...
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Temperature simultaneously. Indicators show the current mode. On / Off Switch ( Press to switch the MC-83 on. Press a second time to switch the unit back off. Alternatively, the MC-83 will switch itself off if no button has been pressed for 10 minutes.
Page 6 1.2 Unpacking Information Before using your new MC-83, please check that the following accessories have been included: Part No 1. MC-83 Relative Humidity-Temperature Meter......126106 2. Hard Plastic Carry Case ............MC83CASE 3. 9V Battery..................130026 4. MC-83 Handbook................130050 Options that may have been ordered with your MC-83: 1.
2. Press the green Power switch ( ) to switch the MC-83 on. 3. The Relative Humidity reading is the larger reading in the top half of the display. Note the “% RH” indicator on the display.
Relative Humidity and Temperature data. This function operates as follows… 1. Press the “RECORD“ button. Note the “REC” indicator on the display whilst the MC-83 is in data record mode. The unit is now recording Maximum, Minimum and Average Relative Humidity and Temperature values.
When this occurs the battery must be replaced as soon as possible, otherwise readings will become inaccurate. 2. Remove the battery cover screw on the rear of the MC-83 and slide out the battery cover. 3. Remove the battery and replace it with a new 9V battery. Alkaline batteries are preferred.
The MC-83 is supplied pre-calibrated. Re-calibration will be required periodically (approx annually), depending on application, environment etc. 75% and 12% Relative humidity standards are available from TPS. Table 1 shows the Relative Humidity characteristics of these two standards. When making up your own standards…...
Page 11 7.1 Calibration Procedure 1. Fit the sensor head into a bottle of 12% humidity standard (part no 130091). The sensor head must be above the level of the standard, as per the diagram below. DO NOT IMMERSE THE SENSOR. Leave for 3 hours to allow the Relative Humidity in the bottle to stabilise.
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Page 12 3. Remove the battery cover screw on the rear of the MC-83 and slide the battery cover away. Adjust VR3 (see diagram below) until the display shows the appropriate Relative Humidity value for the current temperature, as detailed in Table 1.
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Page 13 5. Switch the meter on. Wait for the displayed Relative Humidity reading to stabilise (up to 3 minutes). Note the reading obtained, and record it as “A”. Make the following calculation to obtain value “B” B = A x (Z – Y) / (A – Y) Where…...
A guarantee card is packed with the instrument or sensor. This card must be completed at the time of purchase and the registration section returned to TPS Pty. Ltd. within 7 days. No claims will be recognised without the original guarantee card or other proof of purchase. This warranty becomes invalid if modifications or repairs are attempted by unauthorised persons, or the serial number is missing.
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Page 16 To obtain this service, please follow this procedure Return the instrument AND ALL SENSORS to TPS freight pre-paid and insured in its original packing or suitable equivalent. INSIST on a proof of delivery receipt from the carrier for your protection in the case of shipping claims for transit loss or damage.
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