Digi-Sense 20250-22 Instruction Manual

User Manual

Data Logging Anemometer

with NIST-Traceable Calibration

Model 20250-22

THE STANDARD IN PRECISION MEASUREMENT

Introduction

The Digi-Sense Data Logging Anemometer
(Model 20250-22) measures air velocity within a range of

1.1 to 20.0 m/s and records up to 32,000 readings. Sam­pling rate, high/low alarm levels, and start mode can be
defined by the user with the Windows

®

98, 2000, XP, Vista
and Win 7 compatible software provided. Logged data is
downloaded to a computer via the integrated USB interface
for analysis, graphing, and print out. The instrument is fully
tested and calibrated to NIST-traceable standards. Careful
use of this meter will provide years of reliable service.

Unpacking

Check individual parts against the list of items below. If
anything is missing or damaged, please contact your
instrument supplier immediately.

1. Data logging anemometer

2. Cover

3. Fan sensor

4. Metal mounting stand

5. Software CD

6. Battery

7. User manual

8. NIST-traceable calibration report with data

2

Meter Description

1. Cover

2. USB interface

3. Start button

4. Indicator lights (record and alarm)

5. Fan sensor

6. Metal stand

6

3

Key Features

• Memory for 32,000 readings

• Analyze and graph data with included software

• Selectable sampling interval

• Operating status indicated by red, yellow, or

green LED light

• User-defined high/low alarm set points

• Two modes (manual and automatic) to start data logging

• Low-battery alarm

• Mounting stand for in-place monitoring

Setup and Operation

Install the supplied data logging software as follows:

1. Insert the CD into the PC.

2. Double-click the set up.exe file to launch the software

installation program

3. Follow the installation wizard to complete the

installation.

4. Upon successful installation of the software the

“AnemometerDL” software icon shortcut will be
automatically placed on your PC desktop.

To initiate the software, double click on the
“AnemometerDL” software icon. An easy-to-follow user
interface will display. A complete software user guide can
be produced by selecting the “Help” option followed by
“contents” from the user interface.

4

LED Status Guide

LEDs Indication

No LED light flash

REC ALM

One green flash every 10 seconds (20 s or 30 s)

REC ALM

One red flash every 10 seconds (20 s or 30 s)

REC ALM

Yellow double flash every 10 seconds

REC ALM

Note: 10s (20s or 30s) can be set up by PC software. When
replacing the battery, you need to disconnect the sensor
fan first to allow access to the battery compartment.

– logging not active
– wrong installment of battery

– logging, no alarm

Green double flash every 10 seconds (20 s or 30 s) when
in manual mode standby

– to start logging (press yellow button until 3 green

flashes and 1 red flash, it is now logging)

– logging, low alarm for measurement value

Red double flash every 10 seconds (20 s or 30 s)

– logging, high alarm for measurement value

– low-battery alarm

Yellow single flash every 1 second (5s,10s or 15s)

– logging finished

5

Specifications

Air velocity

M/S
(meters per second)

KPH
(kilometers per hour)

FPM (feet per minute) 80 to 3937 ft/min 1 ft/min ±(3% + 40 ft/m)

MPH (miles per hour) 0.9 to 44.8 mph 0.1 mph ±(3% + 0.4 MPH)

KNT (nautical MPH) 0.8 to 38.8 knots 0.1 knots ±(3% + 0.4 knot)

Memory: 32,000 readings

Selectable sampling interval: 2 s, 5 s, 10 s, 30 s, 1 m, 5 m, 10 m, 30 m,
1 hr, 2 hr, 3 hr, 6 hr, 12 hr, 24 hr

Operating temperature: 32 to 122°F (0 to 50°C)

Operating humidity: <80% RH

Weight: 1.8 oz (49 g)

Dimensions: 5

3

⁄4" x 13⁄8" x 11⁄8" (14.5 x 3.5 x 3 cm)

Range Resolution Accuracy

1.1 to 20.00 m/s 0.01 m/s ±(3% + 0.20 m/s)

0.8 to 72.0 km/h 0.1 km/h ±(3% + 1.0 km/hr)

6

7

Maintenance, Recalibration, and Repair

It is recommended that Digi-Sense products are calibrated
annually to ensure proper function and accurate measure-

ments; however, your quality system or regulatory body
may require more frequent calibrations. To schedule your
recalibration, please contact InnoCal, an ISO 17025 calibra­tion laboratory accredited by A2LA.

Phone: 1-866-INNOCAL (1-866-466-6225)
Fax: [phone]
E-mail: [e-mail]
Web: InnoCalSolutions.com

For Product and Ordering Information, Contact:

Toll-Free: 1-800-323-4340
Phone: [phone]
Fax: [phone]
ColeParmer.com/Digi-Sense

1065DGMAN_20250-22 Rev.1

Toll-Free: 1-800-358-5525
Phone: [phone]
Fax: [phone]
Davis.com/Digi-Sense

Manual Part No. 00100-79