testo 435
Multifunction HVAC and IAQ Meter
NEW!
The newest technology for temperature, humidity, air flow and more!
cfm
fpm
∆P
CO2
%RH
°F
Lux
All the right parameters for HVAC and IAQ
The testo 435 is perfect for monitoring,
analyzing and diagnosing indoor air quality
problems in the office, in the warehouse, or on
the production floor, in restaurants or schools...
anywhere you need to take important IAQ
measurements.
You can easily pinpoint and troubleshoot
problems with HVAC systems and see the
results of corrections immediately.
Commissioning, validating, benchmarking, or
simpy adjusting HVAC systems are all easy with
the testo 435.
A new IAQ probe measures CO2, relative
humidity, room air temperature and absolute
pressure for evaluating indoor air quality.
In addition the 435 can calculate absolute
pressure, draft, lux and surface temperature.
Determining volume flow, is easy with a wide
selection of thermal probes, vane probes and
Pitot tubes.
The right probe for every application
The testo 435 is designed to accept a variety of
probes depending upon your applicaton. The
extraordinatory selection makes it possible to
measure everything from IAQ to velocity.
For basic HVAC checks, temperature and
humidity measuremenst have been integrated in
the new thermal probe, for measurements in
ducts. Flow speed, volume flow, air humidity and
air temperature can easily be measured in one
sequence.
The vane probe with a diameter of 2.4 in. is
suited for integrated measurements at registers.
For duct measurements, a 0.6 in. vane probe
with a broad range, 118 to 8000 fpm is
available. The Pitot tube is ideal for higher air
velocities. A 10”H20 differential pressure probe is
integrated into the testo 435-3 and testo 435-4
for this purpose.
For important IAQ measurements the unique IAQ
probe measures CO2, relative humidity and room
air temperature in order to evaluate room air
quality plus absolute pressure.
The degree of air velocty or draftiness in any
room can easily be determined with the
turbulence probe. Determine the true
illumination (lux) of those low-lit areas that affect
working conditions daily.
Surface temperature measurements of motors,
cooling coils, heat exchangers, etc. are easily
performed with the cross-band probe. Its unique
design reaches the actual surface temperature in
just a few seconds.
Wireless probes for temperature and humidity
Wireless probes offer many advantages over
traditional cable or integrated probes.
Measurements up to 65 ft. from the meter are
possible. There is no risk of damaging or
tangling wires or cables. With the teso 435 up to
three wireless probes can be read and displayed
at once for temperature and humidity
measurements. The optional wireless module
can be installed by the user at any time.
Designed for the way you work
The test 435 was designed from the ground up
to provide easy-to-follow ,menus and a large,
clear display. For measurements at different
locations, the 435-2 and 435-4 can assign
measured values to user-defined and named
locations in the memory.
function buttons.
Long-term IAQ measurements of indoor air
parametes are simple via the function buttons.
Different measurement programs can be
pre-set in memory and called up as needed.
Programmed functions
Important measuremetns such as mean
calucations (both “timed” and multi-point”), and
area inputs for volume flow calculations, are
directly accesed by the three function buttons.
Any area input (circle or rectangle) can be stored
in memory or modified at point of use. Five
pre-determined shapes are accessible via the
Precision instrument, rugged design
You want your instrument to be accurate
and dependable. The testo 435 was
designed and built as a precise and rugged
instrument with an IP54 protection rating.
The rubberized case material provides
shock and impact protection. The large,
back-lit display is recessed to provide
added protection. An integrated loop on
the top is available for a carry strap. Plus,
integrated magnets on the instrument back
provide secure hands-free operation. The
testo 435 delivers laboratory-level accuracy,
with toolboox toughness and versatility.
Superior data communcation and documentation
The testo 435 offers several options for viewing,
managing, printing and analyzing data.
The simplest option is to print out data with date
and time for convenient and fast documenation
on-site with the optional testo infrared printer.
With the 435-2 and 435-4 measure and store
up to 10,000 readings then analyze them via
Testo’s ComSoft3 Compact Software (included).
Easily display your data in graphs or tables, or
export the data to a spreadsheet for further
analyses.
In addition the testo 435 can perform timed
interval printing from 1 minute to 24 hours using
its user-specified “Cycle printing” function for
longterm monitoring.
Every testo 435 offers:
PLUS ADVANCED FEATURES:
· WIDE SELECTION OF PROBES:
· INTERGRATED DIFFERENTIAL PRESSURE MEASUREMENT
(435-3/-4)
- Four funtion IAQ probe ( temp. RH, CO2, and absolute pressure)
- Thermal probe with integrated temperature and humidity
measurement
- Wireless temperature probes
- for flow measurement
- for monitoring HVAC filters, etc.
· ADDITIONAL FUNCTIONS (435-2/-4)
- Flow measurements wtih both vane and thermal probes
- Data recording for up to 10,000 readings
- IP54 protection class
- PC software for analyzing, archiving and documenting data
· TIME SAVING PROGRAMMED FUNCTIONS
- Wireless or cable humidity probes
· PRINTING TO THE TEST IR PRINTER
- Light (Lux) probe (optional)
- Comfort level probe (optional)
testo 435-1
testo 435-2
testo 435-3
testo 435-4
STANDARD
STANDARD WITH
STANDARD WITH
STANDARD WITH
EXTRA FUNCTIONS
DIFFERENTIAL PRESSURE
EXTRA FUNCTIONS
DIFFERENTIAL PRESSURE
testo 435-1, multifunction meter for
A/C, ventilation and IAQ, with battery
and calibration document
testo 435-2, multifunction meter for
A/C, ventilation and IAQ with
memory, PC software and USB
cable, incl. battery and calibration
document
testo 435-3, multifunction meter with
built-in differential pressure
measurement for A/C, ventilation and
IAQ, with battery and calibration
document
testo 435-4, multifunction meter with
built-in differential pressure
measurement for A/C, ventilation and
IAQ with memory, PC software and
USB cable, with battery and
calibration document
Part no. 0560 4351
Part no. 0563 4352
Part no. 0560 4353
Part no. 0563 4354
Probes
435-1/-2/-3/-4
Multifunction probes
Meas. range
Accuracy
IAQ probe (CO2, humidity, temperature and
barometric)
32 to +122 °F
0 to +100 %RH
0 to +10000 ppm CO2
+240 to +460 “H20
±0.5 °F
0632
±2 %RH (+2 to +98 %RH)
±(50 ppm CO2 ±2% of mv) (0 to +5000 ppm CO2)
±(100 ppm CO2 ±3% of mv) (+5001 to +10000 ppm CO2)
±2”H20
Thermal velocity probe with built-in
temperature and humidity measurement, dia.
0.5in, with telescopic handle (max. 29in.)
-4 to +158 °F
±0.5 °F
0 to +100 %RH ±2 %RH (+2 to +98 %RH)
0 to +4000 fpm ±(6 fpm +4% of rdg.)
0635 1535
Meas. range
Accuracy
Part no.
+118 to
+8000
±(40 fpm +1.5% of rdg)
0635 9535
+50 to +4000
fpm
±(20 fpm +1.5% of rdg.)
0635 9335
0 to +4000
fpm
±(6 fpm +5% of rdg.)
0635 1025
Meas. range
Accuracy
Part no.
0 to +800”H20
±2”H20
0638 1835
Flow probe
Illustration
Illustration
Vane measurement probe, 0.6in. diameter,
with telescopic handle max. 35 in.
Vane measurement probe, 2.4 in. diameter,
with telescopic handle (max. 36 in.)
Hot wire probe for fpm and °F, probe head
dia. .30 in., with telescopic handle (32 in.)
Absolute pressure probes
Illustration
Absolute pressure probe 800”H20
Air probes
Illustration
4.5 in.
Efficient, rugged NTC air probe
Surface probes
2 in.
1535
Meas. range
Accuracy
Sec Part no.
-58 to +302 °F
±0.5% of rdg (+212 to +302 °F)
±0.4 °F (-13 to +167 °F)
±0.7 °F (remaining range)
60 s 0613 1712
Ø 0.20 in. Ø .16 in.
Illustration
Part no.
Meas. range
Accuracy
Sec Part no.
-76 to +572 °F
Class 2
3s
0602 0393
Pipe wrap probe for pipe diameter 0.20 to 2.6
in. with replaceable measuring head, shortterm range to +536°F, T/C Type K
-76 to +270 °F
Class 2
5s
0602 4592
Clamp probe for measurements on pipes,
pipe diameter 0.6 to 1"), short-term range up
to +266°F
-58 to +212 °F
Class 2
5s
0602 4692
Fast-action surface probe with spring
thermocouple, for uneven surfaces, shortterm range to +932°F, T/C Type K
Immers./penetr. probes
4.5 in.
Ø 0.20 in.
Ø 0.5 in.
Illustration
Waterproof immerstion/penetration probe,
T/C Type K
4.5 in.
2 in.
Ø 0.2 in.
Ø 0.15 in.
Meas. range
Accuracy
Sec Part no.
-76 to +750 °F
Class 2
7s
0602 1293
435-2/-4
IAQ probes
Illustration
Comfort level probe for turbulence
measurement with telescopic handle (max. 32
in) and stand, meets DIN 1946 Part 2
requirements
Meas. range
Accuracy
Part no.
0 to +120 °F
0 to +1000
fpm
±0.5 °F
±(6 fpm +4% of rdg)
0628 0109
Accuracy to DIN 5032, Part 6:
f1 = 6% = V(Lambda) adjustment
f2 = 5% = cos-like weighting
0635 0545
Meas. range
Accuracy
Part no.
-4 to +160 °F
0 to +100
%RH
±0.5 °F
±2 %RH (+2 to +98 %RH)
0636 9735
Lux probe, for measuring light intensity
Humidity probes
Illustration
Humidity/temperature probe
Ø 0.5 in.
435-3/-4
Prandtl's Stainless Steel Pitot tubes
Pitot tube, 14 in. long
Pitot tube, 20 in. long,
Pitot tube, 40 in. long, measures velocity
together with pressure probes 0638 1347
Illustration
14 in.
20 in.
1000 mm
Oper. temp.
Part no.
32 to +1112 °F
0635 2145
32 to +1112 °F
0635 2045
32 to +1112 °F
0635 2345
Ø 0.3 in.
Ø 0.3 in.
Ø 0.3 in.
Option: Wireless
435-1/-2/-3/-4
Wireless module (optional)
Country version
Radio freq.
Part no.
Wireless module for instrument, 915.00 MHz FSK, approved for USA and Canada
915.00 MHz FSK
0554 0190
Pre-assembled: Wireless handles with probe head
Wireless handles with probe head for surface measurement
Wireless handle for plug-in probe heads
with T/C probe head for surface
measurement
5 in.
Ø 0.2 in.
1.6
in.
Meas. range
Accuracy
Resolution
-58 to +660 °F
Short-term to +932 °F
Wireless handle:
±(0.9 °F +0.3% of rdg) (-40 to +932 °F)
±(1.3 °F +0.5% of rdg) (remaining range)
T/C probe head: Class 2
0.1 °F (-58 to
5s
+390 °F)
1.0 °F (remaining
range)
Ø 0.5
in.
Country version
Wireless freq.
Part no.
Wireless handle for plug-in probe heads, incl. T/C adapter, approved for USA and Canada
915.00 MHz FSK
0554 0191
T/C probe head for surface measurement, attachable to radio handle, T/C Type K
sec
0602 0394
435-2/-4
Wireless probes incl. humidity probe head
Wireless handle for plug-in probe heads
with humidity probe head
Meas. range
Accuracy
Resolution
0 to +100 %RH
-4 to +160 °F
±2 %RH (+2 to +98 %RH)
±0.9 °F
0.1 %RH
0.1 °F
Country version
Radio freq.
Part no.
Wireless handle for plug-in probe heads, incl. T/C adapter, approved for USA and Canada
Humidity probe head, attachable to wireless handle
915.00 MHz FSK
0554 0191
0636 9736
Wireless probes: General technical data
Wireless handle
Battery type
Battery life
Measuring rate
0.5 s or 10 s,
adjustable on handle
Radio coverage
Up to 65 ft. (without
obstructions)
2 AAA batteries
215 h (meas. rate 0.5 s)
6 months (meas. rate 10 s)
Transmission
RF direct
Oper. temp.
Storage temp.
-4 to +122 °F
-40 to + 160°F
Technical data
435-1/-2/-3/-4
435-3/-4
Probe type
NTC
Type K
Testo humid.
sensor, cap.
Vane
Hot wire
CO2 (IAQ
probe)
Meas. range
-40 to +300 °F
-328 to
+2498 °F
0 to +100
%RH
0 to +12000
fpm
0 to +4000
fpm
0 to +10000 0 to
ppm CO2
+800”H20
Accuracy
±1 digit
±0.4 °F (-13 to +170
°F)
±0.7 °F (-40 to -13
°F)
±0.7 °F (+160 to
+212 °F)
±0.5% of rdg
(remaining range)
±0.5 °F (-76 to
+140 °F)
±0.5% of rdg
(remaining range)
Resolution
0.1 °F
0.1 °F
(Air, humidity, multipurpose probe)
Differential
Absolute
pressure probe pressure
probe, internal
0 to +10”H20
435-2/-4
Lux
0 to +100000
Lux
±0.008”H20 (0 to
+0.8”H20)
1% of rdg
(remaining range)
0.1 %RH
2 fpm (60 vane)
20 fpm (16 vane)
4 fpm
1 ppm CO2
0.04 “H20
2”H20
Oper. temp.
-4 to +122 °F
Battery life
200 h (typical vane measurement)
Storage temp.
-22 to +160 °F
Dimensions
8.9” x 3” x 1.8”
1 Lux
Ordering Information
Measuring Instrument
Part no.
Accessories
Part no.
testo 435-1, multifunction meter, for A/C, ventilation and IAQ,
with battery and calibration document
0560 4351
testovent 410, volume flow funnel, Ø 13in./13 x 13 in., incl.
case
0554 0410
testo 435-2, multifunction meter for A/C, ventilation and IAQ
with memory, PC software and USB cable, incl. battery and
calibration document
testovent 415, volume flow funnel, Ø 8in/7.5x17.5in., incl. case
0563 4352
0554 0415
Connection hose, silicone, 16 ft. long, Max. load 280 “H20
0554 0440
testo 435-3, multifunction meter with built-in differential
pressure measurement for A/C, ventilation and IAQ, with
battery and calibration document
0560 4353
testo 435-4, multifunction meter with built-in differential
pressure for A/C, ventilation and IAQ with memory, PC software
and USB cable, plus battery and calibration document
0563 4354
Accessories
Part no.
External recharger incl. 4 Ni-MH rechargeable batteries with
built-in, international power supply - 100-240 V, 300 mA, 50/60
Hz, 12 VA/instrument
0554 0610
Plug-in power supply for testo 735, testo 635, testo 435, 5
VDC 500 mA with European adapter
0554 0447
System case
Part no.
Service case for meter and probes, (16 x 12 x 4 inches)
Handle for plug-in humidity probe head for connection to testo
635 and testo 435, probe cable included, measures/calibrates
humidity probe head
Control and humidity adjustment set 11.3%RH/75.3%RH incl.
adapter for humidity probes, Quick checks or calibration of
humidity probe
0430 9735
0554 0660
Teflon sintered filter, (dia. 0.5in.), high velocities
0554 0756
Stainless steel sintered cap, (dia. 0.5in)., is screwed onto
humidity probe, for high velocity speeds or in dirty air
0554 0647
Calibration Documents
Part no.
ISO calibration document/meter with surface probe; calibration
points +140°F; +250°F; +360°F
0520 0071
0516 0035
ISO calibration document/Humidity, Electronic hygrometers;
calibration points 11.3%RH and 75.3%RH at +77°F
0520 0006
Service case for meter, probes and accessories,
(19 x 17 x 4.3 inches)
0516 0135
ISO calibration document/Pressure, Differential pressure,
accuracy 0.1 to 0.6 (% of fsv)
0520 0025
Printer and Accessories
Part no.
ISO calibration document/Velocity, Hot wire, vane anemometer;
calibration points 100; 158; 200; 300 fpm
0520 0024
Testo Infrared printer and infrared interface, 1 roll of thermal
paper and 4 round cell batteries
0554 0547
ISO calibration document/Velocity, Hot wire, vane anemometer,
Pitot tube; calibration points 200; 400; 1000; 2000 fpm
0520 0004
Extra thermal printer paper (6 rolls), legible up to 10 years
0554 0568
ISO calibration document/Velocity, Hot wire, vane anemometer,
Pitot tube; calibration points 1000; 2000; 3000; 4000 fpm
0520 0034
Extra thermal printer paper (6 rolls)
0554 0569
ISO calibration document/Light, Lux probes; calibration points
500; 1000; 2000 Lux
0520 0010
ISO calibration document/CO2, CO2 probes; calibration points
0; 1000; 5000 ppm
0520 0033
probes and Pitot tubes.
0986 9514/msp/si/A/07.2005
Easily determine volume flow, with a choice of thermal probes, vane
Subject to change without notice.
Monitoring HVAC Air Flows
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