RS 53,55 Eng
Contents
1. Two 4 digit Liquid Crystal Displays LCD with a maximum reading of 9999 Polarity Indication Automatic positive implied negative indicated Overrange Indication OL or OL Low Battery Indication is displayed when the battery voltage drops below operating voltage Reading Rate 1 sec reading nominal 53 only T1 or T2 mode 1 sec reading nominal 55 only T1 T2 mode 2 sec reading nominal 55 only 2 2 Environmental Conditions Operating Temperature 0 C to 50 C 0 to 7596 R H Storage Temperature 20 C to 60 C 0 to 80 R H with battery removed from meter Temperature Coefficient 0 1 x Specified accuracy C 18 C or gt 28 C Power Requirements 9V Alkaline battery Battery Life Alkaline 90 hours Dimensions H x W x D 160mm x 64mm x 26mm without holster 170mm x 74mm x 39mm with holster Weight including battery 300gms without holster 430 gms with holster Accessories 2 K type bead thermocouples 55 1 K type bead thermocouple 53 battery installed operator s manual and protective holster 2 3 Electrical Specifications Accuracy is 96 reading number of digits at 23 C 5 C less than 75 R H for thermometer 1 K type Measurement Range Resolution Accuracy Input Protection 200 C 100 C 0 1 C 0 3 reading 1 C 828 F 148 F 0 2 F 0 3 reading 2 F 99 9 C 999 9 C 0 1 C 0 196 reading 0 7 C 60V d c or 24 Vr2. person To maintain the thermocouple in good condition observe the following precautions Avoid excess bending Do not overheat the thermocouple Avoid chemical reactions that can damage the thermocouple BATTERY REPLACEMENT The meter is powered by a single 9V battery Refer to Figure 2 and use the following procedure to replace the battery Turn the meter off Remove the thermocouple connector Remove the holster Position the meter face down Remove the screw from the battery cover Remove the battery cover Lift the battery from case top and carefully disconnect the battery from battery connector leads Install a new battery Replace the battery cover Reinstall the screw and replace the holster 060 02 14 BATTERY REPLACEMENT Screw 9V battery Battery cover Battery connector Figure 2 15 HOW TO USE THE TILT STAND AND HOLSTER Swing the stand out for easier meter reading Hang on a nail at the workbench United Kingdom RS Components UK PO Box 99 Corby Northants NN17 9RS Tel 01536 201234 Fax 01536 405678 France Radiospares Composants Rur Norman King BP 453 60031 Beauvais Cedex Tel 33 3 44 10 15 15 Fax 33 3 44 10 16 00 Italy RS Components S p A Via Cadorna 66 20090 Vimodrone Milano Tel 39 2 27 425 1 Fax 39 2 27 425 207 Germany RS Components GmbH Hessenring 13b 64545 Morfelden Walldorf Tel 49 6105 401
3. 234 Fax 49 6105 401 100
4. DIGITAL THERMOMETER CE OPERATOR S MANUAL R5 53 206 3744 RS 55 206 3750 DIGITAL THERMOMETER OPERATOR S MANUAL RS53 206 3744 RS55 206 3750 INTRODUCTION 1 1 Unpacking and Inspection Upon removing your new Digital Thermometer from its packing you should have the following items 1 Digital Thermometer 2 K type Bead Thermocouple 3 Operator s Manual 4 Protective Holster 5 Belt Clip 1 2 Front Panel Refer to Figure 1 and the following numbered steps to familiarize yourself with the meter s front panel controls and connectors 1 Digital Display Window The digital display window has two 4 digit LCD readout maximum reading 9999 display The upper display is for displaying the Stop Watch and MAX MIN reading and has symbols for auto polarity REC MAX MIN C and F The lower display is for displaying the reading measured and has symbols for auto polarity HOLD J K C F TI T2 and T1 T2 for 55 only 2 Thermocouple Connectors Allows connections of miniature thermocouple plugs 2 for Model 55 3 Hold Switch Used to hold the numeric reading on main display When pressed the HOLD annunciator is displayed Conversions are made but the reading is not updated 4 Power ON OFF Switch Turns the thermometer on or off 5 Key This key is used to control the timer The timer is only enabled while the minor display is blanked The maximum reading is 99 99 When the first p
5. ICAL SHOCK DO NOT USE THIS INSTRUMENT WHEN VOLTAGES AT THE MEASUREMENT SURFACE EXCEED 24V r m s AC OR 60V DC TO AVOID DAMAGE OR BURNS DO NOT MAKE TEMPERATURE MEASUREMENTS IN MICROWAVE OVENS 3 1 Preparation and Caution before Measurement 1 Before measurement warm up for at least 30 seconds after connecting the thermocouple to the thermometer 2 If the instrument is used near noise generating equipment be aware that the display may become unstable or indicate large errors 12 3 2 Temperature Measurements 1 Connect the plug of the thermocouple to the connector of the thermometer 2 Select the desired input mode and C F 3 Use the sensing point of thermocouple to measure the surface to be measured 4 Read the stable reading 5 Warning Do not measure the surface if the potential exceeds 60Vd c or 24Vr m s 3 3 How to change to J type mode 1 Set the thermometer to OFF condition 2 Press the ON OFF key and HOLD key at the same time 3 Unpress the ON OFF key but keep the HOLD key depressed for at least 2 seconds and then release it the thermometer goes to the J type mode 4 n this mode the J symbol is displayed and the K symbol is blanked 5 To revert back to K type mode switch the instrument OFF and ON again 13 MAINTENANCE To keep the instrument clean wipe the case with a damp cloth and detergent do not use abrasives or solvents Any adjustment maintenance and repair shall be made by a skilled
6. m s 147 8 F 999 9 F 0 2 F 0 1 reading 1 4 F 1000 C 1370 C 1 0 3 reading 1 C 1000F 2498 F 2 F 0 3 reading 2 F 2 J type Measurement Range Resolution Accuracy Input Protection 200 C 100 C 0 1 C 0 3 reading 1 1 C 328 F 148 F 0 2 F t 0 3 reading 2 2 F 99 9 C 760 C 0 1 C 0 1 reading 0 8 C 60V d c or 24 Vr m s 147 8 F 999 9 F 0 2 F 0 1 reading 1 6 F 1000 F 1400 F 2 F 0 396 reading 2 F 3 T1 T2 K J type 55 only 0 396 of T1 T2 reading 2 0 C 0 396 of T1 T2 reading 4 0 F 10 4 THERMOCOUPLE CHARACTERISTICS A 50BK bead thermocouple 1 Temperature Range 40 C to 204 C 40 F to 399 2 F 2 Tolerances 2 2 C or 0 75 from 0 C to 204 C 2 2 C or 2 0 from 0 to 40 C 3 Wire Length 1m with miniature plug Teflon tape insulated B 50BJ bead thermocouple 1 Temperature Range 40 C to 204 C 40 F to 399 2 F 2 Tolerances 2 2 C or 0 75 3 Wire Length 1m with miniature plug Teflon tape insulated 11 OPERATION This instrument is designed to use external K type or J type thermocouple as temperature sensor Temperature indication follows National Bureau of Standards and IEC 584 temperature voltage tables for K type or J type thermocouple are supplied with the thermometer WARNING TO AVOID ELECTR
7. ress is made the is displayed and the timer starts from 00 00 and counts in one second intervals Following presses toggle between stop and recounting Press and hold this key for more than 2 seconds will disable the timer 4 6 C F Selector This key switches between C and F 7 MAX MIN Key Pressing this key enables the RECORD mode while the minor display is blacked When first pressed the REC symbol will be displayed and the thermometer will continually record and update the maximum and minimum readings To view the stored maximum reading press this key once the MAX symbol will appear To view the stored minimum reading press this key again the MIN symbol will appear Additional presses of this key toggle between MAX and MIN Press and hold this key for more than two seconds will disable this mode 8 T1 T2 Switch Selects the T1 T2 mode for measuring 55 only 9 T2 Switch Selects the T2 mode for measuring 55 only 10 T1 Switch Selects the T1 mode for measuring 55 only ON t IL N esi 9 LES N i E lla Te 1 9 gt Figure 1 6 ee l LIH SPECIFICATIONS 2 1 General Specifications This thermometer conforms to the temperature voltage tables of the National Bureau of Standards and to the IEC 584 Standards for K type Display
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