Datasheet

ManualsBrandsTesto ManualsEnvironmental Test InstrumentsHygrometer -200 ... 1370 °C 0...100 % 0...2000 hPa

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testo 635

www.testo.com

Data sheet

Humidity/temperature

measuring instrument

testo 635 – Measurement

technology for humidity

measurement

°C

%RH

hPa

The testo 635 offers the possibility of testing and analyzing

air humidity, material moisture, U-value and the dewpoint in

compressed air systems.

In addition to measurement with classical probes, a wireless

measurement over up to 20 m distance is also possible

with the testo 635. This eliminates damage to the cable or

difficulties in handling.The wireless probes are available for

the measurement parameters temperature and humidity,

up to three wireless probes can be recorded and displayed

by the testo 635. The optional plug-in radio module can be

retrofitted at any time.

The testo 635 stands out thanks to its intuitive operation

and clear menu structure. For example, for measurements

at different measurement sites, the testo 635-2 provides

the advantage that the measurement values can be

allocated to the respective measurement site. For long-term

measurements and material moisture measurements, the

instrument can be switched between different user profiles.

The testo 635 is available in two versions. The version

testo 635-2 has extended instument functions such as an

instrument store, PC software, direct display of material

humidity and the possibility of connecting a U-value probe

Connection of 2 plug-in probes and 3 wireless probes

Measurement of temperature, air humidity, material

equilibrium moisture, pressure dewpoint, absolute pressure

and U-value

Display of dewpoint distance, min., max. and mean values

Illuminated display

Protection class IP 54

Instrument store for 10000 measurement values

(testo 635-2 only)

PC software for archiving and documenting measurement

data (testo 635-2)

Summary of content (8 pages)

PAGE 1
Data sheet testo 635 Humidity/temperature measuring instrument testo 635 – Measurement technology for humidity measurement Connection of 2 plug-in probes and 3 wireless probes Measurement of temperature, air humidity, material °C equilibrium moisture, pressure dewpoint, absolute pressure and U-value %RH Display of dewpoint distance, min., max.
PAGE 2
testo 635 Technical data Common advantages testo 635-1 · Connection of 3 radio probes · Measurement of air humidity, material equilibrium testo 635-1 thermohygrometer incl. battery and calibration protocol moisture and pressure dew point in compressed air systems · Display of dew point difference, min, max and mean values Part no.
PAGE 3
testo 635 Accessories Transport and Protection Service case for measuring instrument, probe and accessories, dimensions 454 x 319 x 135 mm Part no. 0516 1035 Additional accessories and spare parts Control and adjustment set for Testo humidity probes, salt solution with 11.3% RH and 75.3% RH, incl. adapter for Testo humidity probes 0554 0660 Sintered PTFE filter, Ø 12 mm, for corrosive media High humidity range (long-term measurements), high flow velocities.
PAGE 4
testo 635 Probes Probe type Dimensions Probe shaft/probe shaft tip Measuring range Accuracy t99 Part no. 0 to +100 %RH -20 to +70 °C ±2 %RH (+2 to +98 %RH) ±0.3 °C 0636 9735 0 to +100 %RH -20 to +125 °C ±2 %RH (+2 to +98 %RH) ±0.2 °C 0636 2161 0 to +100 %RH 0 to +40 °C ±2 %RH (+2 to +98 %RH) ±0.2 °C 0636 2135 Humidity probes Humidity/temperature probe Ø 12 mm Robust humidity probe for meas. up to +125 °C, short-term up to +140 °C, Ø 12 mm, e.g. exhaust ducts, and for meas.
PAGE 5
testo 635 Probes Probe type Dimensions Probe shaft/probe shaft tip Measuring range Accuracy t99 Part no. -60 to +300 °C Class 2 1) 3s 0602 0393 -20 to +70 °C Class 11) U-value: ±0.
PAGE 6
testo 635 Probes Probe type Dimensions Probe shaft/probe shaft tip Part no.
PAGE 7
testo 635 Radio probes Radio handles with probe head for air-/ immersion-penetration-meas. Part no. Radio handle for plug-in probe heads, incl. T/C adapter, approval for the countries: DE, FR, UK, BE, NL, ES, IT, SE, AT, DK, FI, HU, CZ, PL, GR, CH, PT, SI, MT, CY, SK, LU, EE, LT, IE, LV, NO; Radio freq. 869.85 MHz FSK T/C probe head for air/immersion/penetration measurement (T/C Type K) 0554 0189 Radio handle for plug-in probe heads, incl. T/C adapter, approval for USA, CA, CL; Radio freq. 915.
PAGE 8
testo 635 Radio probes Part no. Radio module for measuring instrument, 869.85 MHz, approval for the countries: DE, FR, UK, BE, NL, ES, IT, SE, AT, DK, FI, HU, CZ, PL, GR, CH, PT, SI, MT, CY, SK, LU, EE, LT, IE, LV, NO 0554 0188 Radio module for measuring instrument, 915.00 MHz FSK, approval for USA, CA, CL 0554 0190 Technical data Radio probes Common Technical Data Battery type 2 x 3V button cell (CR 2032) Measuring rate 0.5 s or 10 s, adjustable on handle Battery life 150 h (meas. rate 0.