Vaisala HMM210 Technical data

HMM210 Series Humidity Modules for Environmental Chambers

Vaisala HUMICAP® Humidity and Temperature Module Series HMM210 provide fast real-time measurement in a wide temperature range. The modules are especially suitable for demanding OEM applications, e.g. environmental chambers and incubators.

Features/Beneﬁts

Three probe conﬁgurations:

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Relative humidity (RH) plus

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temperature (T) probe.

Dewpoint probe with probe

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heating. By heating the whole probe a few degrees above ambient condensation is avoided.

Dewpoint probe described

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above, together with a temperature probe for obtaining relative humidity and temperature outputs.

Three module conﬁgurations

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Dierent probe and cable

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lengths

Chemical purge option

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maintains high measurement performance in demanding chemicalconditions.

Calibration certiﬁcate included

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The Vaisala HUMICAP® Humidity and Temperature Module Series HMM210 are designed for OEM type applications needing humidity or dewpoint measurement in demanding environments, e.g. in environmental chambers growth chambers and incubators.

Demanding applications

The HMM210 modules are optimized for harsh environments with both high humidities and a wide temperature range. The humidity measurement is fully temperature compensated. In addition, the modules remain accurate and reliable under extreme conditions where a combination of high humidity and rapidly changing temperature can result in condensation on the sensor head.

The modules are highly versatile and exible. They provide either

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relative humidity and temperature or dewpoint measurement with various congurations. All modules have microprocessor based electronics and are equipped with analog or digital outputs.

Unique warmed probe

The warmed probe and composite sensor, available on the dewpoint probe conguration, is warmed to always remain a few degrees higher than ambient. Advantages of this patented technique include:

• Nocondensationproblemsonthe

probe, as the temperature of the probe always remains higher than the ambient.

• Fastresponsetime,especiallyin

rapidly changing temperatures.

• Improvedstabilityandaccuracyin

high humidities.

Vaisala HUMICAP® Sensor and chemical purge option

The HMM210 modules use Vaisala HUMICAP for best possible stability. The sensor is insensitive to dust and to most chemicals. In conditions of extraordinary high levels of chemicals and cleaning agents, chemical purge is available as an option. With chemical purge, contaminants are evaporated from the sensor and performance is returned to normal.

180R sensors

Technical data

Relative Humidity

Measurement range 0 ... 100 %RH Accuracy (including non-linearity, hysteresis and repeatability)

+2 %RH (0 ... 90 %RH)

+3 %RH (90 ... 100 %RH) Response time (90 % at +20 °C/+68 °F) in still air (with sintered ﬁlter) 60 s Typical temperature dependence of electronics 0.02 %RH/°C (0.02 %RH/°F)

Humidity sensor HUMICAP

180R

Temperature

Measurement range -70 ... +180 °C (-94 ... +356 °F) Typical accuracy of electronics at +20 °C

+0.1 °C (+0.18 °F)

Typical temperature dependence of electronics 0.0025°C/°C

(0.0025 °F/°F)

Temperature sensor in RH+T probe:

HMM211 and HMM213 Pt 100 RTD

IEC 751 1/3 Class B

HMM212 Pt 1000 RTD

IEC 751 1/3 Class B

Additional temperature probe Pt 100 RTD

IEC 751 1/4 Class B

Outputs

Two analog outputs selectable

HMM211 0 ... 1 V, 0 ... 5 V, 0 ... 10 V

0 ... 20 mA

HMM212 4 ... 20mA (loop powered)

Digital output

HMM213 RS232

General

Operating temperature range

Probe -70 ... +180 °C (-94 ... +356 °F)

Electronics -5 ... +55 °C (+23 ... +131 °F) Storage temperature range (Electronics) -40 ... +70 °C (-40 ... +158 °F) Sensor protection (standard) stainless steel sintered ﬁlter

Connections screw terminals for 0.5 ... 1.5 mm

wires

Power Supply

Operating voltage 10 ... 35 VDC In modules with analog outputs the supply range depends to a certain extent on the selected output range. Current consumption without sensor head warming or re-gaining option HMM211 & HMM213 12 mA at 35 VDC

Conﬁguration Options

Compatible with modules:

PROBES HMM211 HMM212 HMM213

RH+T yes yes yes

Dewpoint (heated

composite sensor) yes yes

Temperature yes yes

CABLE LENGTHS

RH+T and Dewpoint probes 65, 150 and 300 cm

Temperature probe 150 and 300 cm

CHEMICAL PURGE

Automatically takes place at power-up

For more information, visit www.vaisala.com or contact us at sales@vaisala.com

HUMICAP

is a registered trademark of Vaisala.

This material is subject to copyright protection, with all copyrights retained by Vaisala and its individual partners. All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. The reproduction, transfer, distribution or storage of information contained in this brochure in any form without the prior written consent of Vaisala is strictly prohibited. All speciﬁcations — technical included — are subject to change without notice.