Micromanometers DP-CALC

Micromanometers DP-CALC
Models 8702 and 8705

dp_calc_micromanometers.jpg (8899 octets) TSI's DP-Calc™ Micromanometers allow you to easily make the HVAC pressure measurements. The DP-CALC measures static, total, and velocity pressures as well as pressure drops across filters, coils, fans, and diffusers. The microprocessor-based DP-CALC uses the latest electronic pressure transducer technology, eliminating sensitivity due to the orientation of the meter. Each model of the DP-CALC combines a lightweight and durable design with an easy to read display.

Model 8702/8705 Features and benefits

Measures and displays differential pressure readings from -1245 to 3735 Pa
Zeroing function quickly and easily resets instrument zero to ensure accurate measurement
Calculates and displays a velocity reading when using a Pitot tube
Variable time constant modes available for a steady display when measuring fluctuating flows
Sampling function takes a sample and stores the current reading
Average function computes the average of storage samples
Optional portable printer provides hard copy documentation of your measurements
NIST traceable calibration certificate

Additional features of Model 8705

Data logging ability allows user to log 1000 data points with a time and date stamp
Single point and continuous data logging modes to fit your applications
Data can be reviewed on-screen, printed, and downloaded to your computer spreadsheet program
TSI downloading software permits easy transfer of data to a computer
Statistics function can displays average, maximum and minimum values, and the number of recorded samples
Automatic conversion between actual and standard velocity readings
Flowrate feature allows for simple and quick calculations of volumetric flowrate by simply inputting the duct shape and size
K factor function provides flexibility for measuring flowrate in various applications

Specifications

Pressure
Range		-1245 to +3735 Pa (-9.3 to 28.0 mm Hg, -5 to +15 in. H₂O)
Accuracy		±1% of reading ±1 Pa (±1% of reading ±0.01 mm Hg) (±1% of reading ±0.005 in. H₂O)
Resolution
	Model 8702	1 Pa (0.01 mm Hg, 0.001 in. H₂O)
	Model 8705	0.1 Pa (0.001 mm Hg, 0.0005 in. H₂O)
Velocity
Range		250 ft/min - 15,500 ft/min (1.27m/s to 78.7m/s
Accuracy		±1.5% at 2,000 ft/min (10.16m/s)
Instrument temperature range
Operating range		32 to 158°F (0 to 70°C)
Storage range		-40 to 185°F (-40 to 85°C)
Averaging capacity (model 8702 only)
Range		Up to 255 values each of pressure and velocity
Flow rate (model 8705 only)
Displayed range		Up to 9,999,000 CFM, m³/h, l/s
K factor range		0.01 to 2
Logging capability (model 8705 only)
Range		Up to 1000 values
Intervals		2 sec, 5 sec, 10 sec, 15 sec, 20 sec, 30 sec, 60 sec, 2 min, 5 min, 15 min, 20 min, 30 min, 60 min
Time constant
Values		1, 5, 10, 15, or 20 seconds
Power requirements
Batteries		Four AA-size Alkaline or NiCd rechargeable
Approx. battery life		24 hour (Alkaline), 7 hour (NiCd)
AC adapter (optional)		7 VDC niminal, 300mA
Physical
External dimensions		3.9 in. x 6.6 in. x 1.5 in. (100mm x 168mm x 38mm)
Weight (with batteries)		0.76 lb. (0.35 kg)
Display:		4-digit LCD, 0.6 in. (15 mm) digit height
Printer interface
Type		serial
Baud rate		1200

Features	8702	8705
Differential pressure
Static pressure
Velocity
Volumetric flowrate
Calculate average
Determines min/max
Variable time constant
Density correction
K factor
Data logging
Data downloading software
Printer output
NIST calibration certificate