TM360A AUTOMOTIVE TEMP-SEEKER
®
Precision Thermo-Psychrometer
Multi-Channel Air Conditioning Humidity and Temperature Drop Tester
OWNER’S MANUAL
(English)
cpsproducts.com
Страница 1: ...TM360A AUTOMOTIVE TEMP SEEKER Precision Thermo Psychrometer Multi Channel Air Conditioning Humidity and Temperature Drop Tester OWNER S MANUAL English cpsproducts com ...
Страница 2: ...A generous probe storage area is provided to keep all your job specific probes neatly housed Note Probes can remain plugged in during storage reducing life shortening stress on both the connection ports and the probe connector ends TABLE OF CONTENTS OVERVIEW Overview 2 Specifications 3 Safety Precautions 3 Operation 4 6 TMX3RH Method 7 Wet Sock Method 7 Psychrometric Chart 8 Automotive Overview 9 ...
Страница 3: ...ONS SAFETY PRECAUTIONS Safety Note Test conditions place the AC system and vehicle sub systems engine cooling system including both mechanical and electrical cooling fans charging and fuel control systems under severe operating conditions when the cabin and ambient air temperatures exceed 80 F 27 C Any abnormalities should become quite evident and safety must be held most important with regard to ...
Страница 4: ... Display 4 Temperature Ports Relative Humidity Port Indoor Air Quality Battery Compartment Battery Eliminator Jack TMX3PS Optional Power Supply Default Wet Bulb Ports A B See Also Wet Sock Method on pg 8 OPERATION ...
Страница 5: ...lgebraic difference between the two selected channels SCAN Press to display the measurements of each temperature channel in 3 second intervals I M Press to select Metric or Imperial units of measurement Press to turn on the LCD backlight for 15 seconds The display defaults to Channel A when initially turned ON Channel AUX Designated for use with the TMX3RH accessory probe to provide direct RH DB W...
Страница 6: ...ntial The instrument can display the temperature difference between any two of the four available temperature channels This is done by pressing the DIFF key followed by the keys representing the two channels for which the temperature difference is desired For instance the sequence DIFF A C displays the algebraic difference between the temperature values at channel A and C Display Units At any time...
Страница 7: ... probe to Channel A and another to Channel B Step 2 Press the RH key and then the MIN key to display the minimum value of the RH Step 3 Slip a supplied 2 cotton sock over the end of the TMX2G probe connected to Channel B and wet it with distilled water Step 4 Option 1 Grip both probes approximately 18 from the ends in one hand Proceed to swing the probes in a circular motion through the air until ...
Страница 8: ... a building wall or pitcher of ice water that is at or below the dew point temperature of the air Above this temperature the moisture will stay in the air The dew point temperature scale is located along the same curved portion of the chart as the wet bulb temperature scale However horizontal lines indicate equal dew point temperatures If the dew point temperature is close to the air temperature t...
Страница 9: ...ance The Appendix of this manual provides DIAGNOSTIC TESTING REPAIR VERIFICATION WORKSHEETS DTRVWs These worksheets will make your AC service repair tasks easier and will go a long way toward assuring maximum customer satisfaction when used as a supporting tool for review of both repairs needed and repairs completed They also support protecting your shop s interests through building very detailed ...
Страница 10: ... decades past For example an OEM spec chart for a current R 134a system with ambient temps between 96 105 F and a humidity level above 40 shows duct temperature in a properly functioning system will be no lower than 72 F Placing a temperature probe in a vent and condemning a system that is not reaching 38 F is NOT the proper way to test a system Referring to the vehicle s dedicated specification c...
Страница 11: ...s much as 30 F 1 C Limited contact area can be a problem if the temperature probe tip is too large Some vehicles use a very short evaporator outlet pipe between the evaporator case and the accumulator nut In some cases only 3 16 of an inch is available for the probe to make contact Taking readings on flange nuts will skew the actual temperature by over 20 F 6 C Gaining access to the outlet side of...
Страница 12: ...5 kPa 42 56 psi 1488 1853 kPa 216 269 psi 20 40 296 399 kPa 43 58 psi 1488 1853 kPa 216 269 psi Above 40 310 413 kPa 45 60 psi 1508 1853 kPa 219 269 psi 106 115 F 42 46 C Below 20 344 434 kPa 50 63 psi 1770 2080 kPa 257 302 psi Temperature HumidityPressureChart AmbientTempvs DischargeTemp Ambient Temp Humidity Front Center Left Rear 55 65 F 13 18 C 0 100 41 F 5 C 41 F 7 C 66 75 F 19 24 C Below 40 ...
Страница 13: ...ront of the condenser Hook up a second air probe from channel D to check vent air temperature in the vent closest to the evaporator Hook a RH Relative Humidity probe to the AUX port Vent temperatures will increase significantly as humidity levels rise so this will allow you to follow the OEM specifications for minimum vent temps based upon ambient air temp and RH level Figure D 1 VARIABLE DISPLACE...
Страница 14: ... 10 seconds Range 40 F to 221 F 40C TO 105 C Accessories TMX3PS Optional A C power supply 100 240V TMX3WB 6pk of 2 cotton socks for use with the Wet Sock Method pg 8 Models TM360 Includes TMX2A 1 TMX2G 1 TMX2S 1 TM360A Includes TMX3C 1 TMX2GA 1 TMX2FP 1 TM360C Includes TMX2A 1 TMX3C 1 TMX2S 1 TMX3C Clamp On Probe All probes have 15ft 4 5m leads Probe Type Surface Common Uses Surface temperatures o...
Страница 15: ... Air movement across condensers Response Time 12 seconds Range 40 F to 257 F 40 C TO 125 C TMX2P Puncture Probe All probes have 15ft 4 5m leads Probe Type Surface Liquids shaft only Common Uses Internal temperatures of frozen materials Air ducts Probe Shaft Length 6 in Response Time 6 seconds Range 40 F to 257 F 40 C TO 125 C TMX2S Velcro Strap Pipe Probe All probes have 15ft 4 5m leads Probe Type...
Страница 16: ...20 seconds in still air Temperature Range 40 F to 194 F 40 C TO 90 C Temperature Accuracy 1 0 F from 40 F to 200 F or 1 2 of reading 1 2 C from 40 C to 90 C or 0 5 of reading RH Range 0 to 100 RH RH Accuracy 1 8 RH from 10 to 90 RH 3 elsewhere in the range Wet bulb Accuracy 1 4 F from 32 F to 120 F 0 7 C from 0 C to 50 C Dew Point Accuracy 1 4 F from 32 F to 120 F 0 7 C from 0 C to 50 C ACCESSORY ...
Страница 17: ...fer to Chart B Check for low refrigerant charge Test refrigerant for contamination non condensable gases air Test condenser for internal restrictions No Debris Clean Retest Check fan clutch Check electronic cooling fan for proper operation Check condenser fan if equipped for proper operation Check fan shroud for damage Inspect gaskets between radiator and condenser Inspect air dams for damage Insp...
Страница 18: ...losing Heater valve not closing Fresh air door not closing CHECK EVAPORATOR CONDITION Evaporator fins dirty or restricted Evaporator interior coated with scale Air bypassing evaporator missing gaskets Inadequate airflow across evaporator i e clogged cabin air filter or rodent infestation can also damage compressor slugging failure CHECK REFRIGERANT AND OIL CHARGE SERVICE Was system evacuated Was s...
Страница 19: ...OT orifice tube for the application too small TXV Thermal Expansion Valve clogged Notes Many systems both OT Orifice Tube and TXV thermal expansion valve do not allow adequate access to the evaporator tubes for proper temperature drop testing As noted on page 11 Technician Operating Tips you may be able to gain access by cutting a small section of the evaporator case away with a hot knife or vibra...
Страница 20: ...t that is determined to be beyond economical repair 70 140 011918JA CPS PRODUCTS INC U S A Headquarters 1010 East 31st Street Hialeah Florida 33013 USA Tel 305 687 4121 1 800 277 3808 Fax 305 687 3743 E mail info cpsproducts com Website www cpsproducts com CPS PRODUCTS CANADA LTD 1324 Blundell Road Mississauga ON L4Y 1M5 Tel 905 615 8620 Fax 905 615 9745 E mail info cpsproducts com Website www cps...
