Testo 425 Data sheet

Compact Thermal Anemometer

Compact velocity and volume (cfm) flow with thermal probe

testo 425

NEW!

°F

fpm

cfm

testo 425

Compact Thermal Anemometer

The compact testo 425 is an easy
to use anemometer with attached
thermal probe on a telescopic
handle. Just enter the duct
measurements directly into the
testo 425 and volume flow
measurements (cfm) are shown
on the clear display. You can
switch between flow and
temperature readings easily.
Timed and multi-point mean flow
calculations allow easy flow
analysis, volume acumulation
estimates, and temperature
variation monitoring. Min-Max
values are one button simple,
while the "Hold" function freezes
the current readings in the display
for easy data recording.

testo 425 thermal anemometer with
probe, incl. telescopic handle (max.
33 inches), battery and calibration
document

Flow, volume flow (cfm) and
temperature measurements

Multi-point and timed mean
calculations

Max-Min values make
comparisons fast and easy

"Hold" button freezes readings

Clear backlit display

Auto Off

t425 monitoring the volume flow of exhaust air

Part no.

0560 4251

Accessories

Zubehör

Case for instrument and probes 0516 0210

TopSafe, protection from impact and dirt 0516 0221

Recharger for 9 V rechargeable battery
For external recharging of 0515 0025 battery

9V rechargeable battery for instrument 0515 0025

Part no.

0554 0025

t425, for adjusting intake air

Technical data

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Meas. range
Accuracy
±1 digit
Resolution

Oper. temp. -4 to +122 °F
Storage temp. -40 to +185 °F
Battery type 9V battery
Battery life

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0 to +4000 fpm
±(6 fpm +5% of rdg.)

2 fpm

20 hr

NNTTCC

-4 to +160 °F
±0.9 °F (32 to +140 °F)

±1.3 °F (remaining range)

0.1 °F

Dimensions
Weight 10 oz
Material/Housing
Warranty 2 years

7 x 2.5 x 1.6 in

ABS

Information subject to change without notice.

testo

Inc
35 Ironia Rd.
Flanders, NJ 07836
Tel.: [phone]
Fax: [phone]
E-Mail: [e-mail]
Internet: www.testo.com