NEW!

Made to make it easy.
Our compact HVAC measuring instruments deliver
precise results wherever you need them –fast, flexible, user-friendly and connected toyour smartphone. Measuring couldn’t be easier.

www.testo.com

The new ones
from Testo:11	measuring
instruments.
9 	measurement
parameters.
1 App.
Endless
possibilities.
Switch on, measure and know more immediately: Our new

But we also know that good measurement technology must

digital HVAC measuring instruments give you precise read-also be smart - which is why our compact newcomers andings - easily and quickly. That is our promise to you.

your smartphone are true partners thanks to the testo SmartApp.

Because we know that things have to move fast in your job
and that you need reliable measurement results immediately
in order to be able to carry on.

2What are you waiting for? Make it easy for yourself.

Air conditioning and ventilation systems
Page 6

Comfort level

Page 8Vane
anemometer

Vane
anemometer

Hot wire
anemometer

CO2 measuring
instrument

Lux meter

Digitalthermohygrometertesto 417

testo 416

testo 425

testo 535

testo 545

testo 625

m/s, m³/h, °C

m/s, m³/h

m/s, m³/h, °C

CO2

Lux

°C, %RH, °Cwb, °Ctp

Pressure measurement

Temperature

Page 10

Page 11Differential pressure
measuring instrument

Differential pressure
measuring instrument

Differential
temperature
measuring instrument

Temperature
measuring
instrument

NTC+ PT100
Temperature measuring
instrument

testo 512-1

testo 512-2

testo 922

testo 925

testo 110hPa/mbar, m/s, m³/h

hPa/mbar

°C

°C

°C
3

Compact precision for your jobs.
Testo's new digital HVAC measuring instruments are always there
when you need accurate readings fast.

Little time, endless to-do lists and complex tasks: These are

And with the testo Smart App, you not only have thethe moments when the new compact measuring instruments

most important measurement menus with you at all times -from Testo are reliably at your side.

documentation and measured value storage are possible atany time with your smart assistant (see App info from p. 12).

The right instrument for every relevant measurement
parameter: Simply turn it on and right away you haveexactly the reading you need to make the right decisions. In
all important applications - fast, simple and precise.

Easy•	Compact design: Quickly to hand, quickly stowed away.
•	Robust workmanship: When the going gets tough.
•	Intuitive operation: High-tech reduced to the essentials.
•	Print reports on site: Everything in black on white.
•	testo Smart App: Configure, save, document measurements
and much more (see p. 12).

4

Each instrument comes in apractical, compact and robust
testo Smart Case

Fast•	Measurement results immediately: With one look,everything is clear.
• 	Configuration with the testo Smart App: Make
settings with just a few clicks.
• 	Automatic volume flow calculation:
The duct diameter is enough.
• 	Two displays show more than one: Show yourcustomers measurement curves on a smartphone.
In real time.

Precise• 	Digital probes proven in practice: For long-term stable,
reproducible and accurate measurement results.
• Helpful measurement menus: Single-point and time
curve measurement in every instrument.
• Complex measurements, compactly simplified:
For example, very easy measurement, adjustment anddocumentation of living space ventilation.
• 	Documentation with the testo Smart App:
Completely without paperwork.

5Air conditioning and ventilation systems

Air conditioning and ventilation systems
easily under control.
Compact flow velocity and volume flow measurement.
To ensure that people enjoy spending time indoors, airconditioning and ventilation systems are a crucial factor for
modern buildings.
Accordingly, it is important to ensure with the appropriate
measurement technology that sufficient fresh air is supplied
to the rooms and that stale air is discharged. And this withthe best possible efficiency, for all VAC units.
With the new flow velocity measuring instruments from
Testo, you can perform these tasks quickly, easily,
precisely and with smart App support: In the duct, at theoutlet and when adjusting the balanced residential
ventilation.

This is how the testo Smart App
supports you- Configure your measuring instrument- Display graphical measured value curve- Save measurement data
- Customer and measuring location management- Documentation of your work
- E-mail dispatch of the report6Air conditioning and ventilation systems

Digital 100 mm vane anemometer testo 417• Simple, fast and precise measurement of flow, volume flow andtemperature at air inlets and outlets• Efficient regulation of balanced residential ventilation and fast
documentation with the testo Smart App• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•T imed and multi-point mean calculation• Durability through compact design with robust housing
Order no. 0563 0417
testo 417 kit 1
Incl. funnel kit for plate outlets
and ventilation grilles.
Order no. 0563 1417
testo 417 kit 2
As kit 1, plus flow straightenerfor swirl vents.
Order no. 0563 2417

Digital 16 mm vane anemometer testo 416• Simple, fast and precise flow measurement & volume flow
calculation in the ventilation duct
• More flexibility for duct measurements with the cable-connected
telescopic probe (maximum length 850 mm)• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App• Timed and multi-point mean calculation• Durability through compact design with robust housing
Order no. 0563 0416

Digital hot wire anemometer testo 425• Simple, fast and precise flow and temperature measurement
plus volume flow calculation in the ventilation duct
• More flexibility for duct measurements with the cableconnected telescopic probe (maximum length 820 mm)• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•T imed and multi-point mean calculation•D urability through compact design with robust housing
Order no. 0563 0425
7

Comfort level

Comfort easily under control.
For a more comfortable indoor climate.

Living, working or leisure: We spend almost 90% of ourWith the new compact measuring instruments from Testo,

time indoors every day!

you have CO2, illuminance, temperature and air humidity

The topics of indoor air quality and comfort could

quickly, easily and precisely in view - and thus ensure

therefore hardly be more important for well-being andcomfort and a healthy climate indoors.

health.

Digital CO2 measuring instrument testo 535• Simple, fast and precise measurement of CO2 concentration• Audible alarm sounds if a limit value is exceeded• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App• High reproducibility of measurement results due to long-term
stable infrared sensor technology• Timed and multi-point mean calculation
Order no. 0563 0535

8

Comfort level

This is how the testo Smart App
supports you- Configure your measuring instrument- Display graphical measured value curve- Save measurement data
- Customer and measuring location management- Documentation of your work
- E-mail dispatch of the report

Digital lux meter testo 545• Simple, fast and precise measurement of illuminance (lux)according to the V-lambda curve for all common lightsources• Wide range of applications due to LED compatibility (except
single-colour blue LED)• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•A udible alarm sounds if a limit value is exceeded•T imed and multi-point mean calculation
Order no. 0563 1545

Digital thermohygrometer testo 625• Simple, fast and precise measurement of air temperature andrelative humidity• Calculation of dewpoint and wet bulb temperature• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•A udible alarm sounds if a limit value is exceeded•T imed and multi-point mean calculation
Order no. 0563 1625

9

Pressure measurement

Pressure measurement easily under control.
Compact pressure measurement.

The new compact measuring instruments from Testo are

testo 512 is also your reliable partner for general pressure

also reliably at your side for two of the most importantmeasurement, checking filters and Pitot tube meas-

measurements on heating systems. For fast measurement

urement .

results when it counts.
And with the differential temperature measuring instrument
With the differential pressure measuring instrument testo

testo 922, (p. 11), you have the supply/return temperature

512, you can check the gas pressure on burners quickly

on heating circuit distributors under control.

and precisely by measuring gas flow pressure and static
gas pressure - indispensable for maintenance work onheating systems.

Digital differential pressure measuring instrument testo 512-1•S imple, fast and precise differential pressure measurement (0 to 200 hPa)for checking filters and for Pitot tube measurement in the air duct•R eliable measurement results due to position-independent differential
pressure sensor with high accuracy•F ast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•V olume flow calculation in measuring instrument and App•A udible alarm sounds if a limit value is exceeded
Pro tip:
Ideal for measuring
gas flow/static gas
pressure.

Order no. 0563 1512

Digital differential pressure measuring instrument testo 512-2•S imple, fast and precise differential pressure measurement (0 to 2,000 hPa)•F ast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•A udible alarm sounds if a limit value is exceeded•T imed and multi-point mean calculation•D urability through compact design with robust housing
Order no. 0563 2512

Pro tip:
Ideal for measuringhigh pressures.

This is how the testo Smart App
supports you- Configure your measuring instrument- Display graphical measured value curve- Save measurement data
- Customer and measuring location management

10- Documentation of your work
- E-mail dispatch of the reportTemperature

Temperatures easily under control.
Measure the most important measurement value compactly.
Digital differential temperature measuring instrument testo 922• Easy, fast and precise differential temperature measurement with dual
thermocouple Type K probe (2 TC Type K probes included)• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App•W ide range of applications due to large measuring range from -50 °C to 1000 °C•L arge sensor selection optional and compatible with commercially available TC
Type K sensors
Pro tip:
Ideal for measuring flow/
return temperature.

•A udible alarm sounds if a limit value is exceeded
Order no. 0563 0922

Digital temperature measuring instrument testo 925- Easy, fast and precise temperature measurement with thermocouple Type Kprobe (1 TC Type K probe included)• Fast in-app configuration, graph history, second screen and measurement
data memory in the testo Smart App• Wide range of applications due to large measuring range
from -50 °C to 1000 °C• Large sensor selection optional and compatible with commercially available
TC Type K sensors• Audible alarm sounds if a limit value is exceeded
Order no. 0563 0925

Temperature measurement in laboratory and food environment

Temperatures in the laboratory and foodenvironment easily under control.
Particularly precise, even at low temperatures.
Digital temperature measuring instrument testo 110• Simple, fast and particularly precise temperature measurement with NTC
or Pt100 sensor (optionally available)• Fast in-app configuration, graph history, second screen
and measurement data memory in the testo Smart App• HACCP-compliant, certified according to EN 13485 for use in the foodsector• High-precision measurement results and high system accuracy withdigital Pt100 sensors (calibration without measuring instrument)• Audible alarm sounds if a limit value is exceeded
Order no. 0563 0110

11

One App for everything: That’s smart!
The testo Smart App will become your indispensable companion.

What’s special about the new ones from Testo: You can

Easy to use - with the testo Smart App. Get the most out

configure and use them according to your needs. Justof your new measuring instrument with the free App. And

measure and nothing more? Not an issue at all. But youof course, the App and the measuring instrument simply

have other settings in mind, you would like to save theconnect automatically.

measured values, and documentation is also important?

Easy•	Intuitive measurement menus•	Quick configuration•	Uncomplicated documentation

Fast•	To the measurement in just a few clicks•	All measurement values at a glance•	Graphic or tabular curve display

12

Efficient•	Storage of measurement and customer data•	Easy report generation and dispatch by e-mail• Second display

Clever•	Data exchange with PC software
testo DataControl•	Continuous updates and extensions•	Free download, free use

13Do you want to be absolutely sure? Good.
All technical data at a glance.

Airconditioning
andventilation
systems

Product

Description

testo 416

testo 417

16 mm vane anemometer with App
connection, fixed
telescope (max. 850mm), incl. transport
bag and calibration
protocol100 mm vane
anemometer withApp connection,incl. transport bag
and calibration
protocoltesto 417 kit 1

testo 417 kit 2

testo 425

100 mm vane anemom- 100 mm vane anemome- Thermal hot wire aneter with App connecter with App connection
emometer with Apption, incl. measuringincl. measuring funnel
connection, fixed telefunnel for plate outlets, for plate outlets, measur- scope (max. 820 mm),measuring funnel foring funnel for ventilation incl. transport bag andventilation grilles, trans- grilles, flow straightener,
calibration protocol
port bag and calibration transport bag and caliprotocol
bration protocol

Measurement
parameterm/s, fpm, m³/h,
cfm, l/s

m/s, fpm, °C, °F, m³/h, cfm, l/s

Measuring range

0.6 to 40 m/s

0.3 to 20 m/s
0 to +50 °C

Accuracy±(0.2 m/s
+1% of reading)±(0.1 m/s +1.5% of m.v.)±0.5 °C

0.1 m/s

0.01 m/s
0.1 m³/h (0 to +99.9 m³/h)
1 °C /h (rem. measuring range)
0.1 °C

0.01 m/s
0.1 °CClassification

IP40 (probe: IP20)

IP40 (probe: IP20)

IP40 (probe: IP20)

Battery (incl.)

3 x AA

3 x AA

3 x AA

Battery life (h)

60

50

35

Solution

Connection testo
Smart App
Order no.

0563 0416

0563 0417

0563 1417

m/s, fpm, °C, °F, m³/h,
cfm, l/s
0 to 30 m/s-20 to +70 °C±(0.03 m/s + 4% ofm.v.) (0 to 20 m/s)±(0.5 m/s + 5% ofm.v.) (20.01 to 30 m/s)
±0.5 °C

0563 2417

0563 0425

Pressuremeasurement

Product
Description
Measurement parameter
Measuring range

14

testo 512-1

testo 512-2

Differential pressure measuring instrument with App connection, measuring range 0 to 200 hPa, audible alarm, incl. transport bag, silicone connection hose and calibration protocol

Differential pressure measuring instrument with App
connection, measuring range 0 to 2,000 hPa, audible alarm, incl. transport bag, silicone connection
hose and calibration protocol
Pa, hPa/mbar, kPa, psi, in²Hg, in²H2O, mm²H₂O, mm²Hg, m/s,
Pa, hPa/mbar, kPa, psi, in²Hg, in²H₂O, mm²H₂O,
fpm, m³/h, cfm, l/s
mm²Hg
0 to +200 hPa

0 to +2,000 hPa

Accuracy±(0.3 Pa + 1% of m.v.) ±1 digit (0 to 25 hPa)±(0.1 hPa + 1.5% of m.v.) ±1 digit (25.001 to 200 hPa)

0.5 %fs

Solution

0.001 hPa

1 hPa

Overload±500 hPa±2500 hPaClassification

IP 40

IP40

Battery (incl.)

3 x AA

3 x AA

Battery life (h)Connection testo
Smart App
Order no.

120

120

0563 1512

0563 2512

Comfort
level

Product

testo 545

testo 625

CO₂ measuring instrument with App
connection, audible alarm, incl. transport bag and calibration protocol

Lux meter with App connection, audible alarm, incl. transport bag andcalibration protocol

Humidity and temperature measuring
instrument with App connection, audible alarm, incl. transport bag andcalibration protocol

Measurement parameter

ppm, %

lux, fc%RH, °C, °F, °C td, °C dp

Measuring range

0 to 10,000 ppm

0 to 100,000 lux

0 to 100 %RH-20 to +60 °C

Description

testo 535

IP40 (probe: IP20)
3 x AA
30

Class C, corresponding to DIN
5032-7 / EN 13032-1, Appendix B
f1 = 6% = V(Lambda) adjustment
f2 = 5% = cos-true evaluation
Total ≤15%
±3% of m.v. ±1 digit
0.1 lux (<10,000 lux)
1 lux (≥10,000 lux)
IP40 (probe: IP20)
3 x AA70

0563 0535

0563 1545

testo 922

testo 925

Accuracy±100 ppm +5 % of mv

Solution

1 ppm

Classification
Battery
Battery life
Connection testo
Smart App
Order no.

2.5 %RH (5 to 95 %RH)
±0.5 °C

0.1 %RH
0.1 °C
IP40 (probe: IP20)
3 x AA
100

0563 1625

Temperature

Product
Description

2-channel temperature measuring in1-channel temperature measuring
strument TC Type K with App connec- instrument TC Type K with App contion, audible alarm, incl. transport bag, nection, audible alarm, incl. transport
2 x TC Type K probes and calibrationbag, 1 x TC Type K probes and caliprotocol
bration protocol

testo 1101-channel temperature measuring
instrument NTC / Pt100 with App
connection, TUC probe socket, audible alarm, incl. transport bag andcalibration protocol

Measurement parameter°C, °F°C, °F

Measuring range-50 to +1000°C-50 to +1000°C

Accuracy±(0.5 °C + 0.3% of m.v.)(-50 to +1000 °C)±(0.5 °C + 0.3% of m.v.)(-50 to +1000 °C)

Solution

0.1 °C (-50 to +499.9 °C)
1 °C (remaining measuring range)

0.1 °C (-50 to +499.9 °C)
1 °C (remaining measuring range)

IP40 (optional TopSafe IP65)
3 x AA
120

IP40 (optional TopSafe IP65)
3 x AA
150

NTC: -50 to +150°C
Pt100: -200 to +800 °C
NTC: ±0.2 °C (-20 to +80 °C)±0.3 °C (remaining meas. range)
Pt100: according to the probe accuracy
NTC: 0.1 °C
Pt100: according to the probe accuracy
IP40 (optional TopSafe IP65)
3 x AA
100

0563 0922

0563 0925

0563 0110

Classification
Battery
Battery life
Connection testo
Smart App
Order no.

°C, °F

15

Accessories & probes
Order no.

TopSafe protective silicone cover for testo 922/925/110 for IP65

0516 0224

Bluetoothincl. battery and mains unit

0554 0621

Spare thermal paper for printer (6 rolls), measurement data documentation can be read for up to 10 years

0554 0568®/IRDA printerProbe type
NTC/PT100 for testo 110

Probe shaft/probe shaft tip
dimensions

Pipe wrap probe (NTC) for pipe
diameters of 5 to 65 mm,
fixed cable 1.2 m
Waterproof NTC immersion/
penetration probe, fixed cable 1.2 m

High-precision digital
Pt100 penetration probe formeasurements in liquids and pastes
with an accuracy of up to ±0.05°C

Probe typeType K For testo 922/925

Ø 5 mm

Ø 4 mmØ4
mm

Dimensions
Probe shaft/probe shaft tip
115 mm

Accuracy

Response
time

Order no.

-50 to +120 °C±0.2 °C (-25 to +80 °C)–

0615 5605-50 to +150 °C±0.5% of m.v.
(+100 to +150 °C)±0.2 °C (-25 to +74.9 °C)±0.4 °C (remaining meas.
range)

10 s

0615 1212-80 to +300 °C±0.3 °C (-80 to-40.001 °C)±(0.1 °C + 0.05 % ofm.v.)(-40 to -0.001 °C)±0.05 °C (0 to +100 °C)±(0.05 °C + 0.05 %of m.v.) (+100.001 to+300 °C)

t₉₀ <45 sec

0618 0275

Measuringrange

Accuracy

Response
time

Order no.

-60 to +400 °C

Class 2 1)

200 sec

0602 1793-60 to +300 °C

Class 2 1)

3 sec

0602 0393-40 to +1000 °C

Class 1 1)

4 sec

0602 5693

Ø 4 mmVery fast-reaction surface probewith sprung thermocouple strip,
also suitable for uneven surfaces,
measuring range briefly up to+500°C, TC Type K, fixed cable

1)

50 mm

295 mmRobust air probe, TC Type K, fixed
cable

Immersion measuring tip, flexible,
for measurements in air/flue gases(not suitable for measurements in
smelters), TC Type K

115 mmMeasuringrange

115 mm
Ø 5 mm

Ø 3 mmØ 12 mm1000 mm

According to standard EN 60584-1, the accuracy of Class 2 refers to -40 to +1200 °C.

www.testo.com

Subject to change, including technical modifications.

Accessories

2981 1434/B&B/msp/dk/03.2024

More probes at www.testo.com