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Dwyer DL70 Differential Pressure and Temperature Datalogger can store up to 21,500 readings and operate totally independently from any external power supply with a built-in lithium battery. Use Model DL200 Windows® software (sold separately) to quickly program the logger or upload data to a computer. This Differential Pressure and Temperature Datalogger is ideal for monitoring air duct velocity, testing and balancing HVAC systems, or verifying room pressure.
|Measuring Parameters||Compensated Temperature, Internal Thermistor|
|Internal Thermistor||-40 to 158°F (-40 to 70°C)|
|Resolution||0.7°F (0.4°C), R25 value equal to 10,000Ω [10kΩ @ 25°C (77°F)]|
|Compensated Temperature||32 to 158°F (0 to 70°C)|
|Memory Size||21,500 readings|
|Accuracy_1||±0.05" w.c. (up to 2" range), ±0.1" w.c. (5" and 10" range)|
|Thermal Accuracy||±0.5% FS|
|Clock Accuracy||±2 sec/day plus one sampling interval|
|Non Linearity||±0.05% FS (BFSL)|
|Hysteresis and Repeatability||±0.05% FS|
|Sample Method||Continuous (first-in, first-out: not available from 40 ms to 8 sec.), Stop when full (fill-then-stop), or delayed start|
|Sample Rate||Selectable from 0.04 seconds to 8 hours|
|Operating Temperature||-40 to 158°F (-40 to 70°C)|
|Operating Humidity||0% to 95% RH (Non- Condensing)|
|Connection||Two 1/8" I.D. permanent protective tubing|
|Service||Dry air and noncorrosive gases|
|Max. Pressure Rating||4X rated pressure|
|Power Requirements||3.6 V TL5134 lithium metal battery, internal, factory replaceable|
|Power Consumption||5-10 µA|
|Housing Material||PPE & PS (polyphenylene ether & polystyrene)|
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