Also Measures and Logs Temperature, Self-Powered, 2-Channel, Compact

Monitor and Record low differential pressures and temperature with the Model DL7 Differential Pressure Data Logger. Unit includes an on-board thermistor for ambient temperature measurement. Sampling rates are user selectable from 0.04 seconds to 8 hours with First-in first-out or Fill-then-stop sampling options. Loggers can store up to 21,500 readings and operate totally independently from any external power supply with built-in lithium battery. Use Model DL200 Windows® software (sold separately) to quickly program the logger or upload data to a computer. The Series DL7 logger is ideal for monitoring air duct velocity, testing and balancing HVAC systems, or verifying room pressure.

No. of Channels: Two; internal thermistor, and a differential pressure sensor.
Internal Thermistor Range: -40 to 158°F (-40 to 70°C).
Compensated Temp Range: 32 to 158°F (0 to 70°C).
Memory Size: 21,500 readings.
Accuracy: ±0.05 w.c.
Thermal Accuracy: ±0.5% FS.
Clock Accuracy: ±2 sec/day plus one sampling interval.
Resolution: ±0.01? w.c.
Internal Thermistor Resolution: 0.7°F (0.4°C), R25 value equal to 10,000 [10k @ 25°C (77°F)].
Resolution: 12 bits (1 in 4096).
Nonlinearity: ±0.05% FS (BFSL).
Hysteresis and Repeatability: ±0.05% FS.
Drift: ±0.5% FS/yr.
Sampling Methods: Continuous (firstin, first-out: not available from 40 ms to 8 sec.), stop when full (fill-then-stop), or delayed start.
Sampling Rates: Selectable from 0.04 seconds to 8 hours.
Ambient Operating Temperature/RH: -40 to 158°F (-40 to 70°C), 0 to 95% RH, non-condensing.
Connection: Two 1/8? I.D. permanent protective tubing.
Computer Requirements: IBM compatible 386 or above and Windows® 3.1 or later with 2 MB RAM and 2 MB hard drive disk space, one serial port.
Service: Dry air and noncorrosive gases.
Max. Pressure Rating: 5X rated pressure.
Power Requirements: Built-in 3.6V Lithium battery.
Power Consumption: 5-10 µA.
Housing Material: Polyphenylene Ether and Polystyrene PPE & PS.
Weight: 4 oz (110 g).
Agency Approvals: CE.