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The HD2304.0 is a portable instrument with a large LCD display. It performs measurements of absolute, relative and differential pressure, and temperature. The PP471 electronic module is used to measure the pressure. The PP471 electronic module works as an interface between the instrument and the TP704 and TP705 series Delta Ohm probes. The temperature is detected with immersion, penetration, contact or air Pt100 probes with SICRAM module or 4 wire direct Pt100 probes. The temperature probes are fitted with SICRAM module and the factory calibration settings are already memorized inside. Upon turning on the instrument automatically detects them. The Max, Min and Avg function calculate the maximum, minimum or average values. Other functions include: the relative measurement REL, the HOLD function, and the automatic turning off that can also be disabled. The instruments have IP67 protection degree. INSTRUMENT TECHNICAL CHARACTERISTICS Instrument Dimensions ( Length x Width x Height) 140x88x38mm Weight 160g ( complete with batteries) Materials ABS Display 2x41D2 characters plus symbols Visible area: 52x42mm Operating conditions Operating temperature -5… 50° C Stocking temperature -25… 65° C Working relative humidity 0… 90% RH without condensation Protection degree IP67 Power Batteries 3 1.5V type AA batteries Autonomy 200 hours with 1800mAh alkaline batteries Power absorbed with instrument off 20¼ A Measuring unit ° C - ° F - Pa - hPa - mbar - bar - atm - mmHg mmH2O - kgf/ cm2 - PSI - inchHg Connections Input module for the probes 8-pole male DIN45326 connector Measurement of temperature by Instrument Pt100 measurement range -200… + 650° C Resolution 0.1° C Instrument accuracy ± 0.1° C Drift after 1 year 0.1° C/ year