Monitor and Record low differential pressures and temperature with the model DL7 Differential Pressure Data Logger. Unit includes an onboard 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 independantly from any external power supply with built-in lithium battery. Use Model DL200 Windows™ software (sold separtely) 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.
PHYSICAL DATA
No. of Channels: Two; internal thermistor, and a differential pressure sensor.
Media: Dry air and noncorrosive gases
Max. Pressure Rating: 5 x pressure range
Accuracy: ± 0.05" w.c.
Resolution: ± 0.01" w.c.
Nonlinearity: ± 0.05% FS (BFSL)
Hysteresis and Repeatability: ± 0.05% FS
Internal Thermistor Range: -40 to 158° F (-40 to 70º C)
Internal Thermistor Resolution: 0.7° F(0.4° C), R25 value equal to 10,000 Ohm [10 KOhm @ 25° C (77° F)]
Compensated Temp Range: 32 to 158° F (0 to 70°C).
Thermal Accuracy: ± 0.5% FS.
Memory Size: 21,500 readings.
Resolution: 12 bits( 1 in 4096)
Stability: ± 0.5 % FS/yr
Sampling Methods: Continuous (First-in, 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
Power: Built-in 3.6 V Lithium Battery
Power Consumption: 5 - 10 micro Amps
Clock Accuracy:
±2 sec/day plus one sampling interval
Ambient Operating Temp: -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 2MB RAM and 2MB hard drive disk space, one serial port.
Housing: Noryl™
Weight: 4 oz (110 g).
Accessories
No. DL200, WindowsTM Software and Connecting Cable
