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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… 

Y

  is the value of the 12% humidity standard at the current 

temperature, as calibrated in step 3 above 

Z

 is the value of the 75% humidity standard at the current 

temperature, as per Table 1. 

For example… 

If  A = 70.0 

Y = 11.3 (assuming the current temperature is 25 

O

C) 

Z = 75.3 (assuming the current temperature is 25 

O

C) 

Then B = 70.0 x (75.3 – 11.3) / (70.0 – 11.3) 

B = 70.0 x 64.0 / 58.7 

B = 76.3 

6. Adjust VR4 (see diagram in Step 3 above) until the display shows the 

value of B calculated above. 

7. Adjust VR3 (see diagram in Step 3 above) until the display shows the 

value of Z above. 

8. Replace the battery cover and re-tighten the screw. 

Notes 

1. VR6 & VR7 are Temperature Zero and Gain adjustments respectively, 

and should 

NOT

 be adjusted in the field. They are factory set 

adjustments only. 

Содержание MC-83

Страница 1: ...1 Table of Contents Each major section of the handbook is clearly listed Sub sections have also been included to enable you to find the information you need at a glance 2 Introduction 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 t...

Страница 2: ...ty Ltd ABN 30 009 773 371 4 Jamberoo Street Springwood Brisbane Australia 4127 Phone 07 32 900 400 International 61 7 32 900 400 Fax 07 3808 4871 International 61 7 3808 4871 Email tps tps com au Web www tps com au ...

Страница 3: ... 6 1 3 Specifications 6 2 Relative Humidity and Temperature Measurement 7 3 Freezing the Reading on the Display 7 4 Data Record and Recall Functions 8 5 Battery Replacement 9 6 Display Mode Indicators 9 7 Humidity Calibration 10 7 1 Calibration Procedure 11 8 Troubleshooting 14 9 Warranty 15 ...

Страница 4: ...Page 4 1 Introduction 1 1 MC 83 Display and Controls ...

Страница 5: ...ingly See section 2 RECORD Press to start recording Maximum Minimum and Average values Press a second time to stop recording these values See section 4 for a full description of this function RECALL Press to sequentially recall Maximum Minimum and Average values recorded using the Record function See section 4 for a full description of this function Relative Humidity Temperature Probe The Relative...

Страница 6: ...andard 100mL 130091 1 3 Specifications Range Resolution Accuracy Humidity 10 to 95 RH 0 1 RH 3 RH Temperature O C 0 to 50 O C 0 1 O C 0 8 O C Temperature O F 32 to 122 O F 0 1 O F 1 5 O F Display Custom Liquid Crystal Display shows Relative Humidity and Temperature simultaneously Sensor Type Humidity Thin film capacitance sensor Temperature Thermistor Power 9V Alkaline Battery for 60 hours operati...

Страница 7: ...g in the bottom half of the display Note the O C or O F indicator on the display Press the O C O F button to change between O C or O F readout 3 Freezing the Reading on the Display When taking measurements in a rapidly changing environment or in a difficult to reach areas the operator is able to freeze the display This allows readings to be correctly noted 1 To freeze the display press the HOLD bu...

Страница 8: ...data record mode press the RECALL button The Maximum values will now be displayed Note the Max indicator on the display Press the RECALL button a second time The Minimum values will now be displayed Note the Min indicator on the display Press the RECALL button a third time The Average values will now be displayed Note the AVG indicator on the display Press the RECALL button a fourth time to return...

Страница 9: ...elow is a summary of the mode indicators that appear on the MC 83 display Indicator Meaning RH Indicates that the top reading is Relative Humidity O C Indicates that the bottom reading is Temperature in O C O F Indicates that the bottom reading is Temperature in O F D H Indicates that the MC 83 is in Data Hold mode see section 3 REC Indicates that the Record Data mode is currently active see secti...

Страница 10: ...ble 1 shows the Relative Humidity characteristics of these two standards When making up your own standards The solution must be saturated with the salt i e no further solids will dissolve Use distilled water Use a plastic bottle that allows the sensor tip to fit snugly into the top of the bottle making a good seal Allow 24 hours after mixing for the temperature to stabilise Standards can be stored...

Страница 11: ...art 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 2 Switch the meter on Wait for the displayed Relative Humidity reading to stabilise up to 3 minutes ...

Страница 12: ...hows the appropriate Relative Humidity value for the current temperature as detailed in Table 1 4 Fit the sensor head into a bottle of 75 humidity standard part no 130090 The sensor head must be above the level of the as per the diagram in Step 1 DO NOT IMMERSE THE SENSOR Leave for 3 hours to allow the Relative Humidity in the bottle to stabilise ...

Страница 13: ...ature as per Table 1 For example If A 70 0 Y 11 3 assuming the current temperature is 25 O C Z 75 3 assuming the current temperature is 25 O C Then B 70 0 x 75 3 11 3 70 0 11 3 B 70 0 x 64 0 58 7 B 76 3 6 Adjust VR4 see diagram in Step 3 above until the display shows the value of B calculated above 7 Adjust VR3 see diagram in Step 3 above until the display shows the value of Z above 8 Replace the ...

Страница 14: ...s Remedy Unstable readings 1 Battery is low 2 Requires re calibration 3 Sensor is faulty Replace battery Re calibrate meter Return to factory for repair Display shows just 1 Meter has over ranged 2 Instrument or sensor is faulty Check that the R H or temperature are within the specified ranges section 1 3 Return to factory for repair Meter will not turn on Battery is exhausted Replace the battery ...

Страница 15: ...the equipment Shipping damage is not covered by this warranty Please note 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 ...

Страница 16: ...ime phone number Your company name ORDER number and return street address A description of the fault Please be specific Note Please Repair does NOT describe a fault Your equipment will be repaired and returned to you by air express where possible For out of warranty units a repair cost will be calculated from parts and labour costs If payment is not received for the additional charges within 30 da...

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