Atec dc-1, dc-2 User Manual

BIOS International Corporation

10 Park Place, Butler, NJ 07405 USA
Phone: [phone] • Fax: [phone]
Toll Free: [phone]

www.biosint.com / [e-mail]

The DryCal®DC-1 and DC-2 primary
flow meters are the original low cost
primary air-flow calibration standards from
BIOS International, the world leader in dry
piston technology. The DryCal®brings the
advantages of high speed volumetric
calibrations and unsurpassed accuracy to
your organization in a small easy to use
instrument. Its simple push-button
operation has made DryCal®the preferred
primary flow meter of industrial hygienists,
environmental scientists and calibration
laboratories worldwide.

The DC-1 offers a two line LCD
display providing continuous readouts of
flow rate, flow average, and the number of
readings included in the average. In
addition, the DC-1 is equipped with a built­in parallel port that interfaces with most
standard IBM compatible printers to obtain
hard copy documentation of flow rate data.

The DC-2 offers all the features of the
DC-1, but adds several other important
features, including atmospheric pressure and
user definable temperature corrections
based on built-in precision sensors. These
corrections result in readings equivalent to
those at standard condition. This feature is
especially useful with mass flow devices.
The standardized readings are displayed
simultaneously with the volumetric readings
on a larger four line LCD display. The DC-2
also allows users to define the number of
readings in the flow average from 1 to 100
measurements and includes an RS-232
interface for direct download to a PC for
easy audit tracking.

Both the DC-1 and DC-2 share three
interchangeable flow measuring cells,
providing by far the broadest dynamic
range in the industry from 1 ml to 50,000
ml per minute. All DryCal®flow cells use
the same near-frictionless piston and photo­optic sensing technology to obtain
volumetric flow readings quickly and
accurately.

U.S. Patents: 5,456,107 & 5,440,925

DryCal® DC-1/DC-2

The Original Dry Piston Calibrators
for Volumetric Gas Flow Verification

The DryCal® DC-1
& DC-2 can be used
to accurately
calibrate most
commercially
available IH and
environmental
samplers.

DryCal®DC-1 / DC-2
Primary Flow Calibrators

• Fast

• Simple Push-button Operation

• Hands-Free Auto-Mode

• 3 Interchangeable Flow Cells

• NIST Traceable

• Dry Piston Technology

• Optional Standardized Temperature
and Pressure Correction (DC-2)

DryCal®DC-1 / DC-2
Primary Flow Calibrators

FEATURES:

Simple Operation—

Provides the user with accurate volumetric flow
readings with the push of a button.

Fast—

Saves valuable time.

Hands-free Auto-Mode—

Flow readings can be taken continuously in the
auto mode, providing hands-free calibration.

Three Interchangeable Flow Cells—

Three flow cells cover a broad range:
1 ml/min. to 50 Lpm.

Nist Traceable Certification—

Dimensional and timing accuracy traceable to
NIST standards.

Patented Graphite Composite Piston Assembly—

Eliminates the inherent inaccuracies and mess
associated with bubble soap.

Sealed Lead Acid Battery—

Can be charged indefinitely. The DC-1 and DC-2
DryCal can be used while charging.

Alphanumeric Display (LCD)—

Indicates the volumetric flow rate and the average
flow rate, battery charge level, and the number of
samples so far in a running average. The DC-2
also indicates the atmospheric pressure, the flow
rate corrected for standardized temperature, and
the average corrected flow rate.

Built-in Parallel Port—

Interfaces with most IBM

®

compatible printers.

RS-232 PC Data Logging Interface (DC-2M only)—

Downloads data directly to a PC.

Automatic Sampling—

DC-1: 10-reading averages with display of
running average
DC-2: 1 to 100-readings as running average (user
selected, 10 is default), repetition rate can be set as
instantaneous or 1 to 255 minutes (user selected)

Built-In Leak Test—

Quality assurance self-test allows user to
periodically verify flow cell integrity.

Tested by National Standards Labs—

· NIST

· The Japanese National Laboratory of Metrology

· The Netherlands Metrological Institute.

CE Approved

SPECIFICATIONS:

Size: (DC-1) 5” x 5” x 2.75” / 127 mm x 127 mm x 70 mm

Weight: (DC-1) 35 oz. / 1310 g

Size: (DC-2) 7.75" x 4" x 7.75" / 197 mm x 102 mm x 219 mm

Weight: (DC-2) 51 oz. / 140 g

Flow Ranges/ Air Flow Accuracy:

Model Optimum Flow Range (1%) Extended Flow Range*

DC-LC 15 ml/min.-300 ml/mi 1 ml/min - 500 ml/min
DC-MC 100 ml/min.-7 L/min. 10 ml/min - 10 L/min
DC-HC 500 ml/min. - 30 L/min. 50 ml/min - 50 L/min

Specifications based on averaged readings: lower limit is based on self-tested max. leakage.
*Contact BIOS for application assistance.

Note: All flow cells are interchangeable between DC-1 and DC-2 units.

Standardized (corrected) Accuracy (DC-2 only):

This represents the accuracy of the DryCal

®

DC-2 in the DC-2's optimum (±1%
volumetric) flow range when reading standardized flow (SLPM). These values were
calculated from the above temperature and pressure inaccuracies and the best-case error
of the DC-2 using the root-sum-square method.

Typical Maximum

293 - 303 °K (20 - 30 °C) ± 1.1% ± 1.4 %
273 - 323 °K (0 - 50 °C) ± 1.3% ± 2.1 %

Battery System: 6V rechargeable, sealed lead acid, 6-8 hours typical operation.

AC Battery Charger/ Power Adapter: Wall-mounted, single station charger. Input: 100

to 120 VAC, 60Hz., Output: 12 VDC. (Optional: Input: 200 to 240 VAC, 50 Hz., Output:
12 VDC.)

Operating Modes: Single cycle, 10-readings, or auto-mode.

Temperature Operating Range: 0-55º C

Printer Port: Standard parallel (IBM Centronics, compatible with most printers.)

Serial Port: (DC-2 models only) Standard NZR data format, 9600-baud rate, 8 bit data,

1 start, 1 stop, no parity

Note: Not compatible with printers that require Microsoft®WindowsTM.

Warranty: 2 year

Note: The recertification program offered by BIOS is elective and is not included as a
warranty item.

All specifications are subject to change. Please contact BIOS or visit our web

site at: www.biosint.com, for the most current information.

DryCal® DC-1/DC-2

GROUP ELECTRONICS PTY LIMITED
47-49 Southern Road (PO Box 55) MENTONE Victoria 3194
(PH) [phone] (FAX) [phone]
(email) [e-mail] (WEB) www.wtcorp.com.au