Precision digital microprocessor controlled
air flow calibrator utilizing a laminar flow ele-
ment flow sensor. Air flow range is 0.1 to 1
CFM, 9 to 29 LPM @ STP. UL, CSA

DL1

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MODEL DL1 DIGITAL LAMINAR FLOW ELEMENT CALIBRATOR

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Certifications
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- UL 3111-1 Standards for Electrical Measuring and Test Equipment 1st Ed.

- CSA-C22.2 No. 1010-1-92 Safety Requirements for Electrical Equipment for
Measurement
Control and Laboratory Use Part 1.

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Notable Features
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- Manufactured under an ISO 9001 quality assurance program.
- Laminar flow element measuring device.
- Display of flow in CFM, LPM or cubic meters per minute by operator selection.
- Flow corrected to standard temperature and pressure (STP).
- Display of barometric pressure in metric or English units.
- Display of temperature in metric or English units.
- Portable battery operated unit is available.
- Standard accuracy: +/- 1.0% of full scale.

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Specifications - Measurement Principles
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Flow Sensor Laminar flow element.

Standardization Correction for standard temperature and
barometric
pressure.

Curve Linearization Individually calibrated and software corrected.


Measurement Accuracy Air Flow: +/- 1.0% of full scale
Temperature: +/- 0.9 degree F (0.5
degree C)
Barometric pressure: +/- 1% over
measurement range

Displayed Parameters and Resolution:

Display is 4 digit LCD 0.7" high.

Parameter Engineering Unit
Resolution
CFM cubic feet per minute 0.01
CFM
LPM liter per minute 1 LPM
M^3/min cubic meter per minute 0.01
m^3/min
degree F degree Fahrenheit 0.1
degree F
degree C degree Celsius 0.1
degree C
In-Hg inches of Mercury 0.01 In
-Hg
mm-Hg millimeters of Mercury 1 mm-
Hg


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Specifications - General
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Air Flow Range 0.1 to 1 CFM, 9 to 29 LPM.

Power Requirements 100-120 VAC; 50/60 Hz.

Operating Temperature 32-104 degree F; (0-40 degree C).

Storage Temperature 32-158 degrees F; (0-70 degree C).

Dimensions 9 3/4" L x 8 1/4" W x 10 3/4" H.
(250 mm x 212 mm x 275 mm).

Weight 8 pounds 6 ounces; (3.75 kg).

Calibration Factory calibration is recommended once per
year.

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Options
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RS232 interface, including cable.
All measured and calculated parameters are accessible through RS232 port to a
computer.

Data acquisition and processing software is available upon request.

Portable battery option. Refer to Model DL1B.
- The battery pack is inside the instrument case.
- The unit will operate on AC power if it is available. It also charges the battery.
The
calibrator operates from the internal battery source when AC power is not
available.
- The battery pack consists of 7.2 V, 2.2 Ah size batteries, 6 each of C size
batteries (1.2v)
in series. Battery type, NiCad.
- A separate battery supervisor circuit is responsible for charging the battery,
switching over
from AC to battery, the full charge indicator and the low battery detector.
- The operating time on the battery is greater than 6 hours.
- The recharge time is 8 hours.
- The battery life is 2 years.

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Laminar Flow Element
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Correction for standard temperature and barometric pressure. Individually
calibrated and
software corrected.

Air Flow Range
CFM LPM
0.1 to 1 9 to 29


32 to 104 degree F (0 to 40 degree C)
30 to 24 inches Hg (760 to 609 mm Hg)
Approximate sea level to 6000 foot elevation above sea level.

PO Box 2888

Ocala, FL 34478-2888

404 Cypress Road

Ocala, FL 34472

Telephone: (352) 680-1177

Fax: (352) 680-1454

E-Mail: fandj@fjspecialty.com