Omega Engineering HH64A User's Manual
Contents
1. CE OMEGA HH64A THERMOMETER OPERATING INSTRUCTIONS CONTENTS PAGE 1 HH64A THERMOMETER OPERATING INSTRUCTIONS ssssssscssssccscsccssecescssesceseseossncesseseesncessavonsessesees 2 2 TROUBLESHOOTING PEE IHRER 5 3 SPECIFICATION cceccsovecesessescsscesesesceecnsssensessescnsscenssensesees 7 LAN KEEN 4 L HH64A THERMOMETER OPERATING INSTRUCTIONS SWITCH ON Press to turn ON Keep pressed if you want to see all the display symbols Note The instrument performs a self test for up to 4 seconds when switched on Press this button again to turn the instrument OFF Note A probe must be inserted before you can operate all the functions If a probe is not inserted the display appears as follows INPUT m DP This is the normal indication for an open circuit or broken probe and out of range indication A cmt ro NBN A TU P 4 nnn SCALE Selects C F or A The chosen setting is shown on display Press this button to scroll around the options MATERIAL Selects thermocouple material Options are K N T J R or S Press this button to scroll around the options Note Take care to ensure that the instrument is set for the correct thermocouple material otherwise measurement errors will result Call Customer Support Department if you need advice in choosing the best material for your application Freezes the display with the last measured value HOLD is shown on t2. N C TE F TYPE A IAN o O O BA P Astra nr ne a Q TROUBLESHOOTING Nothing happens when the thermometer is switched on a Check if the battery is low or discharged Fit a new battery If the instrument still does not function contact our Technical Services Department The thermometer works but will not measure temperature correctly a Incorrect orientation of the connector when fitted to the input socket will show as temperature movements in the wrong direction b The probe or plug connection may be damaged Check by using a spare probe c The probe may not be suitable for the job For example frozen foods refrigerated cabinets between pack measurements of chilled foods surface temperatures of rolled steel internal temperatures of concrete or tarmac and other applications all require different probes EN CARE OF THE INSTRUMENT The HH64A thermometer is dust and waterproof to IP67 and will withstand harah environments Use a damp cloth or warm soapy water to prevent deposits hardening or becoming sticky Do not use solvent based cleaners or methylated spirit ete If you need to store your instrument for an extended period for example your spare unit remove battery to eliminate risk of leakage CHANGING THE BATTERY The symbol BAT appears on the display once the battery voltage reaches a preset level on load Please replace your battery as soon as possibl
3. e after seeing this symbol To replace the battery unscrew the screw retaining the battery cover on the rear of the instrument Insert the battery ensuring the polarity is correct Take care not to over tighten the screw when re fitting the cover at RE N ge SEL NM a A e MO L 3 HH64A INSTRUMENT SPECIFICATION Thermocouple types K N T J R S Measurement Range Calibration to BS EN 60584 thermocouples ITS90 Scales C F A Kelvin Resolution 0 1 below 1000 1 above 1000 autoranging Accuracy at 23 C Better than 0 1 of reading 0 2 C Temperature Less than 0 01 of reading per C Coefficient change from 23 C Cold Junction Stability Ambient 25 C to 50 C normal working Temperatur Rang Input Resistance Response time Battery Battery Life continuous Dimensions Weight Protection EMC Emission EN 50081 1 No emissions above EN 55 022 Class B limits Immunity EN 50082 1 Performance to Criterion B Due to our policy of continual product improvement specifications are subject to change without prior notice n Reo ear ci E tee ate e Stock No M 3633 0900 Not se PISA BAG TINTI ALI A
4. he display Press button again to release this function Note Having selected HOLD it is still possible to scroll the held values of MAX MIN and ACTUAL temperatures and to redisplay the temperature scale for any of these This button scrolls the display of MAXIMUM MINIMUM and ACTUAL temperatures RESET of Maximum and Minimum to Actual value This function occurs automatically at switch on At the instant of RESET the horizontal bar above the temperature scale symbol becomes visible for one second RESET copies the actual value into the Maximum and Minimum stores it does not alter the selection for display AUTO SWITCH OFF The HH64A can be configured to either automatically switch off three minutes after the last button operation or to remain permanently on until manually switched off This mode is indicated on the display by the horizontal bar above the least significant right side digit When the bar is visible the instrument will auto power down To change from one mode option to the other switch the instrument OFF then with the HOLD button depressed switch the instrument ON again Slt Mn eh A A AOE A RANE SALAM NUM A a es nn DISPLAY See Figure 1 below Maximum amp Minimum Display held Input open circuit or over range Auto switch off enabled Max Min reset indicator Celsius Fahrenheit Absolute Low battery warning Thermocouple Type 6 89 e Minus sign 1 T 1 T 12 L id MI
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