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testo 635-1 - Humidity measuring instrument

Order-Nr. 0560 6351

This meter uses a sensor to start up. Click here for probe selection.

Where to buy

Probes available as an option mean you can measure air humidity, temperature, absolute pressure, and dew point in compressed air
Measures air moisture, material equilibrium moisture, pressure dew point
Calculates dew point and dew point distance
Cyclical printing of readings once a minute, for example

The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity, and dew point – in compressed air as well. State of the art technology and a large selection of probes, which are available optionally, allow for a wide variety of measuring possibilities.

Details

Product Description

The testo 635-1 is for measuring air moisture, material equilibrium moisture, and pressure dew point in compressed air systems. Up to 3 temperature or humidity probes can be displayed; data transmission is radio-controlled, or wireless. Measurement data can be transmitted by infrared to the Testo printer. It is also possible, during cyclical printing, to print measurement data once every minute, for example.
The testo 635-1 immediately displays the dew point difference between ambient air and the wall surface, when analyzing moisture on walls and ceilings.
There are precision probes up to -60°C tpd available to inspect pressure dewpoint in compressed air systems. The humidity sensor developed by Testo has proven itself world-wide and has outstanding features in terms of precision, long-term stability, temperature resistance and robustness.

Delivery Scope

testo 635-1 temperature and humidity measuring instrument, including calibration protocol and batteries
Caution: The instrument can only be commissioned with a probe. These are available separately.

Technical Data

Temperature - NTC
Measuring range	-40° to 302 °F / -40 to +150 °C
Accuracy	±0.4 °F (-13° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C) ±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C) ±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C) ±0.5 % of mv (Remaining Range)
Resolution	0.1 °F / 0.1 °C

Temperature - NTC

Measuring range

-40° to 302 °F / -40 to +150 °C

Accuracy

±0.4 °F (-13° to 166.8 °F) / ±0.2 °C (-25 to +74.9 °C)

±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C)

±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C)

±0.5 % of mv (Remaining Range)

Resolution

0.1 °F / 0.1 °C

Temperature - Type K TC
Measuring range	-328.0° to 2498 °F / -200 to +1370 °C
Accuracy	±0.5 °F (-76° to 140 °F) / ±0.3 °C (-60 to +60 °C) ±(0.4 °F + 0.5 % of mv) (Remaining Range) / ±(0.2 °C + 0.5 % of mv) (Remaining Range)
Resolution	0.1 °F / 0.1 °C

Temperature - Type K TC

Measuring range

-328.0° to 2498 °F / -200 to +1370 °C

Accuracy

±0.5 °F (-76° to 140 °F) / ±0.3 °C (-60 to +60 °C)

±(0.4 °F + 0.5 % of mv) (Remaining Range) / ±(0.2 °C + 0.5 % of mv) (Remaining Range)

Resolution

0.1 °F / 0.1 °C

Humidity - Capacitive
Measuring range	0 to +100 %rH
Accuracy	See probe data
Resolution	0.1 %rH

Absolute Pressure
Measuring range	0.0 hPa to +800.0 InH₂O / 0 to 2000 hPa
Accuracy	See probe data
Resolution	0.0 InH₂O / 0.1 hPa

General technical data
Weight	15 oz. / 428 g
Dimensions	9 x 3 x 2 in. / 220 x 74 x 46 mm
Operating temperature	-4° to 122 °F / -20 to +50 °C
Housing	ABS / TPE / Metal
Battery type	Alkaline, type AA
Battery life	200 h
Storage temperature	-22° to 158 °F / -30 to +70 °C

Probes

Air Probes

Rugged air probe, T/C Type K

Order Number: 0602 1793

Dewpoint Pressure Probe

Drucktaupunktfühler zur Messung in Druckluftsystemen

Pressure dewpoint probe for measurements in compressed air systems

Order Number: 0636 9835

Precision pressure dewpoint probe for measurements in compressed air systems, including certificate with test point -40°F tpd

Order Number: 0636 9836

Humidity probes

Dünner Feuchtefühler mit abgesetzter Elektronik

Thin humidity probe with built-in electronics, incl. 4 attachable Teflon protection caps for material moisture equilibrium measurement

Order Number: 0636 2135

Robust humidity probe for meas. up to +257 °F, short-term up to +284 °F, Ø 0.47 ", e.g. exhaust ducts, and for meas. of material equilibrium moisture, e.g. bulk goods

Order Number: 0636 2161

Scatter field probe for fast and damage-free material moisture measurement, with probe cable 1.2 m

Order Number: 0636 6160

Humidity/temperature probe

Order Number: 0636 9735

Immersion / Penetration Probe

Efficient and fast-action immersion probe, waterproof, T/C Type K

Order Number: 0602 0593

Waterproof immersion/penetration probe, TC Type K

Waterproof immerstion/penetration probe, T/C Type K

Order Number: 0602 1293

Fast-action, waterproof immersion/penetration probe

Super-quick, waterproof immersion/penetration probe, T/C Type K

Order Number: 0602 2693

Immersion tip, flexible
Measuring range: -328° to 1832 °F (-200° to 1000 °C)

Order Number: 0602 5792

Pressure Probe Accessories

Absolute pressure probe 29 psi

Order Number: 0638 1835

RFID Probe

T/C probe head for surface measurement (T/C Type K)

Order Number: 0602 0394

Humidity probe head

Order Number: 0636 9736

Surface probes

Spare meas. head for pipe wrap probe, TC Type K

Spare measuring head with thermocouple strip for temperature probe with clamping bracket

Order Number: 0602 0092

Fast-reaction paddle surface probe, for measurements in inaccessible places, e.g. narrow apertures and slots, TC Type K

Order Number: 0602 0193

Fast-action surface probe with sprung thermocouple strip

Fast-action surface probe with spring thermocouple , for uneven surfaces, short-term range to +932°F, T/C Type K

Order Number: 0602 0393

Efficient, waterproof surface probe with small measurement head for flat surfaces, T/C Type K

Order Number: 0602 0693

Fast-action surface probe with spring thermocouple for uneven surfaces, short-term to +932°F, T/C Type K

Order Number: 0602 0993

Waterproof surface probe with widened measurement tip

Waterproof surface probe with widenend measurement tip for flat surfaces, T/C Type K

Order Number: 0602 1993

Flat head surface probe with telescopic handle max. 680 mm

Flat head surface probe with telescopic handle (max. 24 in.) for hard-to-reach areas, T/C Type K

Order Number: 0602 2394

Pipe wrap probe for pipe diameter 5 to 65 mm

Pipe clamp probe for pipe diameter 0.2 to 2.5'', with replaceable measuring head. Measuring range to 536 °F short-term

Order Number: 0602 4592

Clamp probe for measurements on pipes, pipe diameter 0.6 to 1'' (max. 1''), meas. range to +266 °F short-term

Order Number: 0602 4692

Magnetic probe (TC type K) - for surface temperatures

Magnetic probe, adhesive force approx. 20 N, with magnets, for measurements on metal surfaces

Order Number: 0602 4792

Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten

Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C

Order Number: 0602 4892

Temperature probe to determine U-value, triple sensor system for measuring wall temperature, modelling clay included

Order Number: 0614 1635

Temperature probe with Velcro (TC Type K)

Order Number: 0628 0020

Thermocouples

Thermocouple with TC adapter, flexible, 800 mm long

Thermocouple with T/C adapter, flexible, 32 in. long, fibre glass, T/C Type K

Order Number: 0602 0644

Thermocouple with TC adapter, flexible, length 1500 mm

Thermocouple with T/C adapter, flexible, 60 in. long, fibre glass, T/C Type K

Order Number: 0602 0645

Thermocouple with TC adapter, flexible, 1500 mm long, PTFE

Thermocouple with T/C adapter, flexible, 60 in. long, PTFE, T/C Type K

Order Number: 0602 0646

Accessories

Additional Accessories

Power Supply for products with a Mini-B USB connection. 5 VDC 500 mA with European adapter, 100-250 VAC, 50-60 Hz. Includes interchangeable "plug" types for use in several countries.Plug-in Power supply, 5 VDC 500 mA with European adapter

Order Number: 0554 0447

External recharger incld. 4 Ni-NMH rechargeable batteries with built-in international power supply - 100-240 V, 300 MA, 50/60 Hz, 12 VA/instrument

Order Number: 0554 0610

Stainless steel sintered cap, Ø 0.47 in.

Order Number: 0554 0641

Control and adjustment set for Testo humidity probes

testo saline pots for control and humidity adjustment of humidity probes, 11.3 %RH and 75.3 %RH with adapter for humidity probe.

Order Number: 0554 0660

Teflon sintered filter, Ø 0.47 in., for corrosive substances

Order Number: 0554 0756

Cases

Service case for measuring instrument, probe and accessories, dimensions 518 x 398 x 155 mm

Order Number: 0516 1435

Service case for measuring instrument, probe and accessories, dimensions 454 x 319 x 135 mm

Order Number: 0516 1035

$ 163.00

excl. tax

Country Specific RFID Handles

Wireless handle for attachable plug-in probe heads, incl. T/C adapter, approved for USA & Canada

Order Number: 0554 0191

Humidity RFID Probe

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

Order Number: 0554 0188

Wireless module for measuring instrument, 915.00 MHz FSK, approved for USA & Canada

Order Number: 0554 0190

Printer and accessories

testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle

Compact printer, with IRDA technology offers fast, easy to read printouts of measurements at every job site. Internal magnets will hold the printer to magnetic surfaces for hands free operation. *Compatible with any Testo device capable of IR or IRDA

Order Number: 0554 0549

Spare thermal paper, permanent ink

Order Number: 0554 0568

Applications

Localising mould

Damp ceilings and walls may be a result of structural damage. In most cases, however, it is a sign of improper ventilation. Once the mould appears inside a house, the tenant assumes that moisture has come in from outside. Numerous disputes have erupted because of the issue of who is liable for the mould damage. However, it is difficult to find out who or what has caused the mould: the tenant or faulty structural design?

Testo 635-1 is ideal for measuring moisture in ceilings and walls. Using the optional attachment temperature/moisture probe and optional surface temperature probe, the testo 635 automatically calculates the dew point distance. It provides initial information about whether mould is being caused by condensation, or from moisture ingress due to structural damage or faulty insulation.

Monitoring production and storage conditions

Our temperature/humidity measuring instruments are used around the world in production, storage and server rooms, museums, archives, cold storage warehouses, containers and sales counters.

Manufacturers, carriers, or dealers of sensitive products must ensure that specified temperature or humidity values are observed during production and storage. The testo 635 offers the option of performing spot measurements in relevant places.

The temperature/humidity measuring instrument testo 635-2 offers the user a wide range of humidity/moisture probes. It provides the option of measuring humidity, material moisture and U-value (for the thermal assessment of structural components). In addition to the standard probes, up to three radio probes can be connected to the device in parallel. Measurement results can be analysed, stored and documented using the supplied PC software.

Downloads

Product Brochures

Data sheet testo 635 (PDF, 2336 kB)

Manuals

Instruction manual testo 635 (PDF, 363 kB)

Software

testo usb driver - Instruction manual (PDF, )
testo usb driver - for various measuring instruments (v2.9.1, EXE, 1.925 KB) USB driver for the following devices with USB port: * USB Interface testo 174 / 177 - T + H * testo 300 / 320 / 330 / 330i / 335 / 340 / 350 * testo 435 * testo 556 / 560 / 570 / 580 * testo 635 * testo 735 * testo 845

This meter uses a sensor to start up. Click here for probe selection.

Where to buy

1-484-773-0111

Inquiry