This document discusses various probes that can be used with the testo 400 measuring device. It provides details on 12 different probe types, including hot wire probes, vane probes, temperature-humidity probes, and a lux probe. Each probe is described in 1-2 paragraphs covering its measurement capabilities, technical specifications, and price. The document is aimed at providing information on the various probe options available for different measurement applications like air velocity, volume flow, temperature, humidity, and light intensity.

1. testo 400
22.05.2019 EMP

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Testo SE & Co. KGaA, testo 400
Target Groups

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Target Groups
Target Groups
FM Service organizations
Mechanical Contractors
FM internal
Contractors
Big service companies managing
buildings and technical appliances for
their customers.
Internal Service organizations in
hospitals, universities, industrial
sites…
Big Organizations focusing on technical
installations in construction
Small contracting companies taking
care of residential buildings or
subcontracting for big mechanical
contractors

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APPLICATIONS

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Application
Measuring assistant (after standard EN 12599 / ASHRAE 111)
- Including calculated accuracy
- Overview with all measuring points
Bluetooth instead of cable handle
Complete measurement with one button click
Strong magnets on t400 device to fix on the duct
Measuring points and customer data management always available
Probe extension
Volume flow in the duct

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Application
Measuring assistant (after standard EN 12599 / ASHRAE 111)
Bluetooth instead of cable handle
Complete measurement with one button click
Measuring points and customer data management always
available
Probe extension + 90° ankle -> measuring without ladder
Available testovent 417 ( 200mm round / 300 x 300 mm)
Volume flow at Outlets

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Testo SE & Co. KGaA, testo 400
Application
Measuring assistant (after standard EN 12599 / ASHRAE 111)
IAQ Data logger for measuring discomfort simultaneously in
three heights with turbulence probe
New tripod with new bag (also for globe thermometer)
Measuring points and customer data management always
available
After ONE measurement -> recalculating PMV/PPD values
due to changing the clo / met factors
Measuring with stand-alone solution IAQ data logger -> use
t400 at any other location for other measurements
IAQ

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Application
Measuring assistant for differential pressure
High accuracy up to ±0.3 Pa + 1% of m.v. (0 to +25 hPa) and
a resolution of 0.001 hPa
Easy to zero the differential pressure before measuring
High precision pressure

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Testo SE & Co. KGaA, testo 400
Application
Measuring assistant (after standard EN 12599 / ASHRAE 111)
Measuring points and customer data management always
available
Graphic with all measured values to see the course
Volume flow measurement with integrated differential
pressure module and pitot tube
Process air

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Testo SE & Co. KGaA, testo 400
Application
Measuring assistant for differential temperature
5 new Pt 100 probes
Measuring points and customer data management always
available
High precision temperature

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WOW- FEATURES

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Wow- Features
• Fast Support for configuration
• Intuitive application menus
• Volume flow after standard EN
12599 / ASHRAE 111
• PMV/PPD after EN ISO 7730 /
ASHRAE 55
• Turbulence degree after EN
ISO 7730

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• Simplest Handling
• Intuitive usability
• Large Touch Display
• High efficiency with new probe
concept
• Long-term measurements with
stand-alone IAQ data logger
Wow- Features

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• Create reports and CSV files
• Send documentation with email
& Bluetooth
• Customer data including
measuring points and
measuring data
• New Software testo Data
Control
• Using the camera for
documentation
Wow- Features

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Probe Overview

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Application Overview Probes
Volume flow
in the duct
Volume flow
at Outlets
IAQ High
precision
pressure
Process air High
precision
temperature
0635 1032
0635 1570 (head) x
0635 1571 x
0635 1572 x
0635 9532 x
0635 9570 (head) x
0635 9571 x
0635 9572 x
0635 9370 (head) x x
0635 9371 x x
0635 9372 x x
0635 9430 (head) x x
0635 9431 x x
0635 9432 x x
0636 9770 (head) x
0636 9771 x
0636 9772 x
0636 9730 (head) x
0636 9731 x
0636 9732 x
0636 9775 x
0635 0551 x
0628 0152 x

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Application Overview Probes
Volume flow
in the duct
Volume flow
at Outlets
IAQ High
precision
pressure
Process air High
precision
temperature
0632 1550 (head) x
0632 1551 x
0632 1552 x
0632 1270 (head) x
0632 1271 x
0632 1272 x
0635 1052 x
0618 0275 x
0618 0073 x
0618 7072 x
0618 0072 x
0618 0071 x

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PROBES

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Cable Probe (0635 1032)
RLP: 210 EUR
Hot wire probe incl. temperature sensor (0635 1032)
Features & Benefits:
 Measures air velocity, volume flow and temperature
 Extendable telescopic probe up to 850 mm
 Easy set up for volume flow measurement with special application menu at
testo 440
 Save measuring results at testo 440
 Affordable entry-level model
Technical Data:
 Range: 0 … 30 m/s / -20 … 70 °C
 Accuracy: ±(0.03 m/s + 4 % of mv) (0 … 20 m/s)
±(0,5 m/s + 5 % of mv) (20,01 … 30 m/s)
±0,5°C
 Resolution: 0.01 m/s / 0.1 °C

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Testo SE & Co. KGaA, testo 400
Hot wire probe incl. temperature and humidity sensor (0635 1570, 0635 1571, 0635 1572)
Features & Benefits:
 Measures air velocity, volume flow, temperature and humidity
 Extendable telescopic probe up to 1.000 mm
 Pluggable extension rods up to 2.000 mm total length
 Saving measurement value with button on handle
 Absolute pressure compensated
Technical Data:
 Range: 0 … 50 m/s / -20 … 70 °C / 5 … 95 %rF
 Accuracy: ±(0.03 m/s + 4 % of mv (0 …+20 m/s)
±(0.5 m/s + 5 % of mv) (20.01 … 30 m/s)
±0.5 °C (0 … +70 °C)
±0.8 °C (-20 … 0 °C)
±2,0 %rF (35 %rF ... 65 %rF)
 Resolution: 0.01 m/s / 0.1 °C / 0.1 %F
BT Probe (0635 1571)
RLP: 650 EUR
Cable Probe (0635 1572)
RLP: 630 EUR
Probe head (0635 1570)
RLP: 450 EUR

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Vane probe (Ø 16 mm) (0635 9532)
Features & Benefits:
 Measures air velocity and volume flow
 Extendable telescopic probe up to 850 mm
 Easy set up for volume flow measurement with special application menu at
testo 440
 Save measuring results at testo 440
 Affordable entry-level model
Technical Data:
 Range: 0.6 … 50 m/s
 Accuracy: ±(0.2 m/s + 1% of mv) (0.6 …40 m/s)
±(0.2 m/s + 2% of mv) (40.1 … 50 m/s)
 Resolution: 0.1 m/s
Cable Probe (0635 9532)
RLP: 260 EUR

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Vane probe (Ø 16 mm) incl. temperature sensor (0635 9570, 0635 9571, 0635 9572)
Features & Benefits:
 Measures air velocity, volume flow and temperature
 Extendable telescopic probe up to 1.000 mm
 Pluggable extension rods up to 2.000 mm total length
 Saving measurement value with button on handle
 Small diameter of vane probe (16 mm) for easy penetration of the duct
Technical Data:
 Range: 0.6 … 50 m/s / -10 …70 °C
 Accuracy: ±(0.2 m/s + 1 % of mv) (0.6 …+40 m/s)
±(0.2 m/s + 2 % of mv) (40,1 … 50 m/s)
±1.8°C
 Resolution: 0.1 m/s / 0.1 °C
Probe head (0635 9570)
RLP: 480 EUR
BT Probe (0635 9571)
RLP: 680 EUR
Cable Probe (0635 9572)
RLP: 660 EUR

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High-precision vane probe (Ø 100 mm) including temperature sensor (0635 9370, 0635 9371, 0635 9372)
Features & Benefits:
 Measures air velocity, volume flow & temperature
 Recognize direction of velocity
 Starts at 0.1 m/s especially for laminar flow measurements
 Vane probe with 100 mm enables integration of large area
 Connectable to testovent 417
 Connectable to telescope
Technical Data:
 Range: 0.1 …15 m/s / -20 … 70 °C
 Accuracy: ± (0.1 m/s + 1.5% of mv) (0.1 … 15 m/s)
± 0.5°C
 Resolution: 0.01 m/s / 0.1 °C
Probe head (0635 9370)
RLP: 600 EUR
BT Probe (0635 9371)
RLP: 720 EUR
Cable Probe (0635 9372)
RLP: 690 EUR

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Testo SE & Co. KGaA, testo 400
Vane probe (Ø 100 mm) incl. temperature sensor (0635 9430, 0635 9431, 0635 9432)
Features & Benefits:
 Measures air velocity, volume flow & temp.
 Recognize direction of velocity
 Vane probe with 100mm enables integration of large area
 Connectable to telescope
Technical Data:
 Range: 0.3 …35 m/s / -20 …70 °C
 Accuracy: ± (0,1 m/s + 1,5% of mv) (0…20 m/s)
± (0,2 m/s + 1,5% of mv) (20.1 … 35
m/s)
± 0.5°C
 Resolution: 0.01 m/s / 0.1 °C
Probe head (0635 9430)
RLP: 270 EUR
BT Probe (0635 9431)
RLP: 390 EUR
Cable Probe (0635 9432)
RLP: 360 EUR

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High-precision temperature-humidity probe (0636 9770, 0636 9771, 0636 9772)
Features & Benefits:
 High accurate measurements especially for clean room applications
 Check ambient air temperature / relative humidity
 Automatic calculation of wet bulb, dew point and absolute humidity
 Determination of Heating/cooling power in testo 440
 Suitable for existing filter caps
 Humidity adjustment with testo saline pots (0554 0660) possible
Technical Data:
 Range: -20 … 70 °C / 0 …100 %rF
 Accuracy: ±(0.6 %rF + 0.7 % of mv) (0 … 90 %rF)
±(1.0 %rF + 0.7 % of mv) (90 … 100 %rF)
± 0.3°C (15 …30°C)
± 0.5°C (remaining range)
 Resolution: 0.01 %rF / 0.1 °C
Probe head (0636 9770)
RLP: 330 EUR
BT Probe (0636 9771)
RLP: 410 EUR
Cable Probe (0636 9772)
RLP: 380 EUR

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Temperature-humidity probe (0636 9730, 0636 9731, 0636 9732)
Features & Benefits:
 Check ambient air temperature / relative humidity
 Measure enthalpy at air handler to determine BTU
 Automatic calculation of wet bulb, dew point and absolute humidity
 Determination of Heating/cooling power in testo 440
 Suitable for existing filter caps
 Humidity adjustment with testo saline pots (0554 0660) possible
Technical Data:
 Range: -20 …70 °C / 0 …100 %rF
 Accuracy: ±2 %rF (5 … 90 %rF)
±0.5°C
 Resolution: 0.1 %rF / 0.1 °C
Probe head (0636 9730)
RLP: 80 EUR
BT Probe (0636 9731)
RLP: 160 EUR
Cable Probe (0636 9732)
RLP: 130 EUR

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Testo SE & Co. KGaA, testo 400
Robust temperature-humidity probe for temperatures up to +180 °C (0636 9775)
Features & Benefits:
 Check air temperature / relative humidity in of ducts
 Check relative humidity in production processes up to 180 °C
 Automatic calculation of wet bulb, dew point and absolute humidity
 Robust sensor housing for rough conditions
 Suitable for existing filter caps
 Humidity adjustment with testo saline pots (0554 0660) possible
Technical Data:
 Range: -20 …180 °C / 0 …100 %rF
 Accuracy: ±3 %rF (0 … 2 %rF)
±2 %rF (2.1 … 98 %rF)
±3 %rF (98.1 … 100 %rF)
±0.5 °C (-20 … 0 °C)
±0.4 °C (0.1 … +50 °C)
 Resolution: 0.1 %rF / 0.1 °C
Cable Probe (0636 9775)
RLP: 430 EUR

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Testo SE & Co. KGaA, testo 400
Lux probe (0635 0551)
Features & Benefits:
 Check brightness at working places and in production
 Assessment according to the V-lambda curve, making it suitable for all
common lamps and light sources
 Accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
 White or warm light LEDs (K< 5,000) can be measured without any problem
Technical Data:
 Range: 0 …100,000 lx
 Accuracy: DIN EN 13032-1 appendix B;
class C according to DIN 5032-7
 Resolution: 0.1 lux < 10000 lux
1 lux ≥ 10000 lux
Cable Probe (0635 0551)
RLP: 290 EUR

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Testo SE & Co. KGaA, testo 400
Turbulence probe (0628 0152)
Features & Benefits:
 Check air movement in rooms
 Check thermal comfort according DIN EN 7730 and ASHRAE 55
 Measures air velocity and temperature
 Calculates turbulence degree and draught rate
 Correct measurements due to absolute pressure compensation
 Quick response time due to loss mass sensor
Technical Data:
 Range: 0 …+5 m/s / 0 …+50 °C
 Accuracy: ±(0.03 m/s + 4 % of mv) (0 …+5 m/s)
±0.5 °C
 Resolution: 0.01 m/s / 0.1 °C
Cable Probe (0628 0152)
RLP: 800 EUR

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Testo SE & Co. KGaA, testo 400
CO2 probe incl. temperature and humidity sensor (0632 1550, 0632 1551, 0632 1552)
Features & Benefits:
 Measures CO2, temperature and humidity
 Rapid checking of the indoor climate
 Prevention of poor air quality in indoor rooms via CO2 measurement
Probe head (0632 1550)
RLP: 360 EUR
BT Probe (0632 1551)
RLP: 450 EUR
Cable Probe (0632 1552)
RLP: 420 EUR
Technical Data:
 Range: 0 …10.000 ppm CO2 / 0 …50 °C / 5 …95 %rF
 Accuracy: ±(50 ppm + 3% of mv) (0 …5000 ppm)
±(100 ppm + 5% of mv) (5001 …10.000 ppm)
±0.5°C
±3 %rF (10 ... 35 %rF)
±2 %rF (35 ... 65 %rF)
±3 %rF (65 %rF ... 90 %rF)
• Resolution: 1 ppm / 0.1 °C/ 0.1 %rF

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CO probe (0632 1270, 0632 1271, 0632 1272)
Features & Benefits:
 Check ambient air quality (CO level)
 High-precision electrochemical CO sensor
Technical Data:
 Range: 0 …500 ppm
 Accuracy: ±3 ppm (0 … 30 ppm)
±10% of mv (30.1 … 500 ppm)
 Resolution: 0.1 ppm
Probe head (0632 1270)
RLP: 240 EUR
BT Probe (0632 1271)
RLP: 330 EUR
Cable Probe (0632 1272)
RLP: 300 EUR

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Fume cupboard probe (0635 1052)
Features & Benefits:
 Maximum precision for measuring flow in laboratory fume cupboards
according to DIN EN 14175-3/-4
 Quick response time due to hot wire probe
 Correct measurements due to absolute pressure compensation
Technical Data:
 Range: 0 …+5 m/s / 0 …+50°C
 Accuracy: ±(0.02 m/s + 5 % of mv) (0 ... 5 m/s)
±0.5°C
 Resolution: 0.01 m/s / 0.1 °C
Cable Probe (0635 1052)
RLP: 630 EUR

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High-precision immersion Pt100 probe (digital) (0618 0275)
Features & Advantages:
 Outstanding accuracy – the high-precision Pt100 immersion / penetration
probe achieves a system accuracy of up to ± 0.05 °C with a resolution of
0.001 °C.
 Ideal for measurements in laboratories, in industry and also in food quality
control.
 Is impressive in applications where every decimal place is relevant.
 Ideal for use as a working standard in calibration processes.
Technical Data:
 Range: -80 …+300°C
 Accuracy: ± 0.3 °C (-80 ... -40.001 °C)
± (0.1 °C + 0.05 % of mv) (-40 ... -0.001 °C)
± 0.05 °C (0 ... +100 °C)
± (0.05 °C + 0.05 % of mv) (+100.001 ... +300 °C)
 Resolution: 0.001 °C
Cable Probe (0618 0275)
RLP: 400 EUR

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Testo SE & Co. KGaA, testo 400
Immersion / Penetration Pt100 probe (digital) (0618 0073)
Features & Advantages:
 Digital and high-precision: Pt100 immersion / penetration probe for carrying
out measurements in liquids and pastes.
 Ideal for measurements in laboratories, in industry and also in food quality
control.
Technical Data:
 Range: -100 …+400°C
 Accuracy: ± (0.15 °C + 0.2 % of mv) (-100 ... -0.01 °C)
± (0.15 °C + 0.05 % of mv) (0 ... +100 °C)
± (0.15 °C + 0.2 % of mv) (+100.01 ... +350 °C)
± (0.5 °C + 0.5 % of mv) (+350.01 ... +400 °C)
 Resolution: 0.01 °C
Cable Probe (0618 0073)
RLP: 200 EUR

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Laboratory Pt100 probe, glass-coated (digital) (0618 7072)
Features & Advantages:
 Exceptionally resistant: The glass-coated Pt100 laboratory probe is resistant
to aggressive media.
 The glass-coated laboratory probe is equipped with a replaceable glass
sheathing (Duran 50)
 Ideal for measurements in laboratories and in industry.
Technical Data:
 Range: -50 …+400°C
 Accuracy: ± (0.3 °C + 0.3 % of mv) (-50 ... +300 °C)
± (0.4 °C + 0.6 % of mv) (+300.01 ... +400 °C)
 Resolution: 0.01 °C
Cable Probe (0618 7072)
RLP: 200 EUR

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Air temperature Pt100 probe (air) (0618 0072)
Features & Advantages:
 Robust air probe for precise measurement of the air temperature.
 The exposed sensor makes it possible to carry out temperature
measurements with a short response time.
 Ideal for measurements in laboratories, in industry and also in food quality
control.
Technical Data:
 Range: -100 … +400 °C
 Accuracy: ± (0.15 °C + 0.2 % of mv) (-100 ... -0.01 °C)
± (0.15 °C + 0.05 % of mv) (0 ... +100 °C)
± (0.15 °C + 0.2 % of mv) (+100.01 ... +350 °C)
± (0.5 °C + 0.5 % of mv) (+350.01 ... +400 °C)
 Resolution: 0.01 °C
Cable Probe (0618 0072)
RLP: 200 EUR

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Testo SE & Co. KGaA, testo 400
Flexible Pt100 immersion and penetration probe (digital) (0618 0071)
Features & Advantages:
 The digital temperature probe with flexible probe shaft is ideal for carrying out
measurements in locations that are difficult to access and in liquids.
 Ideal for measurements in laboratories and in industry.
Technical Data:
 Range: -100 …+265 °C
 Accuracy: ± (0.3 °C + 0.3 % of mv)
 Resolution: 0.01 °C
Cable Probe (0618 0071)
RLP: 420 EUR