HMT330 Series Humidity and Temperature Transmitters

HMT330 Series Humidity and Temperature Transmitters

www.vaisala.com

HMT330 Series Humidity and Temperature

Transmitters for demanding humidity measurement

The HMT330 transmitter family has the solution for demanding industrial humidity measurements.

Features/Benefits

Six models for demanding industrial applications

Full 0 ... 100 % RH measurement, temperature range up to +180 °C (+356 °F)

(depending on model)

Pressure tolerance up to

100 bar (depending on model)

Next generation Vaisala

HUMICAP® Sensor for excellent accuracy and stability

Graphical display of measurement trends and over four-year history

Multilingual user interface

Excellent performance in harsh chemical concentrations

Corrosion resistant IP65 housing

NIST traceable (certificate included)

Analog outputs, WLAN/LAN

The Vaisala HUMICAP

®

Humidity and Temperature Transmitter

Series HMT330 is designed for demanding industrial applications where stable measurement and wide customization is important.

Vaisala HUMICAP performance

®

The HMT330 series incorporates

Vaisala’s 30 years of experience in industrial humidity measurement.

An updated, even more stable and chemical resistant HUMICAP ® sensor is available, next to the proven reliable and accurate sensor.

Chemical purge minimizes effects of contaminants

In environments with high concentrations of chemicals and cleaning agents, chemical purge helps to maintain measurement accuracy between calibration intervals.

Chemical purge involves heating the sensor to remove harmful chemicals.

The function can be initiated manually or programmed to occur at set intervals.

Graphical display of history and measurement trends

The HMT330 can be ordered with a large numerical and graphical display, which allows the user to clearly monitor operational data, measurement trends and 1-year measurement history. The optional data logger with real-time clock makes it possible to generate over four years of measured history, and zoom in on any desired time or time frame. The battery backup of the clock guarantees a reliable logging of measured data.

The display alarm allows tracking of any measured parameter, with a freely configurable low and high limit.

Data collection and

(wireless) transfer to PC

The recorded measurement data can be viewed on the display or transferred to a PC with Microsoft

Windows ® software. The transmitter can also be connected to a network with an optional (W)LAN interface, which enables a (wireless) Ethernet connection. A USB-RJ45 cable makes it easy to connect the service port of the HMT330 to a PC.

Many ways to install and versatile outputs

Mains and DC power options, and several mounting accessories make the instrument easy to install.

The HMT330 can have up to three analog outputs. Isolated galvanic power supply and analog outputs are also available. For serial interface the

USB connection, RS232 and RS485 can be used.

Flexible calibration

The HMT330 instruments are calibrated at six humidity points at the factory. A quick, one-point field calibration can be performed with the hand-held HM70 meter. A twopoint calibration can be performed with the HMK15 salt bath calibrator in a controlled environment. The transmitter can be sent to Vaisala for recalibration. Accredited calibrations and maintenance contracts are also available.

Technical data

Performance

Relative humidity

Measurement range with Vaisala HUMICAP ® 180C or 180RC

0 ... 100 % RH

Accuracy (including non-linearity, hysteresis, and repeatability) with Vaisala HUMICAP

®

180 or 180R for typical applications

for applications with chemical purge/warmed probe at +15 ... +25 °C (59 ... +77 °F) at -20 ... +40 °C (-4 ... +104 °F) at -40 ... +180 °C (-40 ... +356 °F)

Factory calibration uncertainty (+20 °C)

±1 %RH (0 ... 90 %)

±1.7 %RH (90 ... 100 %RH)

±(1.0 + 0.008 x reading) %RH

±(1.5 + 0.015 x reading) %RH

± 0.6 % RH (0 ... 40 %RH)

± 1.0 % RH (40 ... 97 %RH)

(Defined as ±2 standard deviation limits. Small variations possible, see also calibration certificate.)

Response time (90 %) at +20 °C (+68 °F) 8 s / 17 s* with grid filter in still air 20 s / 50 s* with grid + steel netting filter

40 s / 60 s* with sintered filter

* with HUMICAP

®

180R or 180RC sensor tempeRatuRe

Accuracy at +20 °C (+68 °F) ± 0.2 °C (± 0.36 °F)

Accuracy over temperature range (measurement range depends on model)

0.4

0.3

0.2

0.1

°C

0.7

0.6

0.5

0

-0.1

-0.2

-0.3

-0.4

-0.5

-0.6

-0.7

-80 -60 -40 -20 0 20 40 60 80 100 120 140 160

180

°C

Temperature sensor PT 100 RTD 1/3 Class B IEC 751

Other variables available (depends on model) dewpoint temperature, mixing ratio, absolute humidity, wet bulb temperature, enthalpy, water vapor pressure

Inputs and outputs

Operating voltage with optional power supply module

10 ... 35 VDC, 24 VAC

100 ... 240 VAC, 50/60 HZ

Power consumption at +20 °C (U in

RS-232

24 VDC)

U

I out out

2 x 0 ... 1 V/0 ... 5 V/0 ... 10 V

2 x 0 ... 20 mA display and backlight during chemical purge during probe heating (HMT337)

Analog outputs (2 standard, 3rd optional) current output voltage output

Accuracy of analog outputs at +20 °C

Temperature dependence of the analog outputs

External loads current outputs

0 ... 1 V output

0 ... 5 V and 0 ... 10 V outputs

Max. wire size

Digital outputs

Service connection

Relay outputs (optional)

Ethernet interface (optional)

Supported standards

Connector

Protocols max. 25 mA max. 25 mA max. 60 mA

+ 20 mA max. 110 mA

+ 120 mA

0 ... 20 mA, 4 ... 20 mA

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

±0.05% full scale

±0.005%/°C full scale

R

L

< 500 ohm

R

L

R

L

> 2 kohm

> 10 kohm

0.5 mm

2

(AWG 20) stranded wires recommended

RS-232, RS-485 (optional)

RS-232, USB

0.5 A, 250 VAC

10/100Base-T

RJ45

Telnet

Vaisala MI70 link Software support

WLAN interface (optional)

Supported standards

Antenna connector type

Protocols

Security

Software support

Authentication / Encryption (WLAN)

Open / no encryption

802.11b

RP-SMA

Telnet

WEP 64/128,WPA

Vaisala MI70 link

Open / WEP

WPA Pre shared key / TKIP

WPA Pre shared key / CCMP (a.k.a. WPA2)

Optional data logger with real-time clock

Logged parameters

Logging interval

Max. logging period

Logged points

Battery lifetime

Display

Menu languages max. three with trend/min/max values

10 sec (fixed)

4 years 5 months

13.7 million points per parameter min. 5 years

LCD with backlight, graphic trend display of any parameter

English, Chinese, Japanese, Spanish, German,

French, Swedish, Russian, Finnish

Mechanics

Cable bushing

Measurement range

Conduit fitting

User cable connector (optional) option 1 option 2

M20 x 1.5 for cable diameter

8 ... 11 mm/0.31 ... 0.43"

1/2" NPT

M12 series 8-pin (male) female plug with 5 m (16.4 ft) black cable female plug with screw terminals

Probe cable diameter

HMT333 (+80 °C) other probes

Housing material

Housing classification

6.0 mm

5.5 mm

G-AlSi 10 Mg (DIN1725)

IP 65 (NEMA4)

Dimensions

Dimensions in mm (inches)

Transmitter with WLAN antenna

183 (7.20)

Operating environment

Operating temperature for probe for transmitter body with display

Electromagnetic compatibility same as measurement range

-40 ... +60 °C (-40 ... 140 °F)

0 ... +60 °C (32 ... 140 °F)

Complies with EMC standard

EN61326-1, Industrial Environment

Mounting options

Mounting with Wall

Mounting Kit

Mounting with DIN Rail

Installation Kit

Pole Installation with Installation

Kit for Pole or Pipeline

Mounting Rain Shield with

Installation Kit

For more information, visit www.vaisala.com or contact us at [email protected]

TYPE APPROVED PRODUCT

CERTIFICATE NO.: A-11440

Ref. B210951eN-a ©vaisala 2010 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.

HMT331 Humidity and Temperature Transmitter for Demanding Wall-Mounted Applications

HMT331 Humidity and Temperature

Transmitter for demanding wallmounted applications

The HMT331 is the state-of-the-art wall-mount humidity instrument.

Features/Benefits

For temperatures -40 ... +60 °C

(-40 ... +140 °F)

Application examples: cleanrooms, pharmaceutical processes, greenhouses, swimming halls, museums and archives

Technical Data

Temperature measurement range

-40 ... +60 °C (-40 ... +140 °F)

Accessories

PC software + cable 215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70

Wall mounting plate (plastic)

Pole installation kit

Rain shield

DIN rail installation set

Dimensions

Dimensions in mm (inches)

211339

214829

215108

215109

215094

The Vaisala HUMICAP

®

Humidity and

Temperature Transmitter HMT331 is the top-of-the-line wall-mounted transmitter for demanding HVAC and condition monitoring applications.

Compared to regular wall-mounted transmitters, the HMT331 offers, higher measurement performance, better chemical tolerance, advanced graphical display features, more powering options, more output options and a wider variety of output humidity parameters.

Graphical display of history and measurement trends

The HMT330 series features a large numerical and graphical display, allowing users to easily monitor operational data, measurement trends and one-year measurement history.

The optional data logger with realtime clock makes it possible to generate over four years of measured history, and zoom in on any desired time or time frame.

Outputs and power supply options for every need

The output options include three analog outputs, RS-232, RS-485, and alarm relays.

The voltage supply range is from 10 to

35 VDC. With an additional module, the transmitter can be connected to all universal mains AC supplies.

The input/output cable can be fed through the back of the transmitter, which is a useful feature, especially for installations in cleanrooms.

HMT333 Humidity and Temperature Transmitter for Ducts and Tight Spaces

210697 duct installation kit for

HMT333 and HMT337.

The HMT333 transmitter has a small probe for remote applications.

Features/Benefits

For remote probe installations in demanding HVAC applications

For temperatures -40 ... +80 °C

(-40 ... +176 °F) or

-40 ... +120 °C (-40 ... +248 °F)

Small thermal mass - fast response to temperature changes

Application examples: cleanrooms, pharmaceutical processes, greenhouses, environmental chambers

The Vaisala HUMICAP

®

Humidity and

Temperature Transmitter HMT333 is a versatile instrument for applicatons where a small remote probe is needed.

Flexible installation

To install the probe in ducts, channels and through walls, an installation kit is available with an aluminum flange, lead-through piece, and steel support bar.

HMT333 has two probe cable options available, a flexible one that withstands heat up to +80° C, and a durable cable that withstands heat up to +120° C. Both cable options are available in lengths of 2, 5, and 10 meters.

37.5 (1.48)

78.5 (3.09)

98.5 (3.88)

For outdoor environments, the

DTR502B solar radiation shield provides protection for the probe.

The shield can be installed on a pole, a beam or a flat surface.

For moderate humidities and temperatures

The HMT333 is typically used in demanding HVAC applications such as cleanrooms, pharmaceutical processes, and greenhouses, or in processes of moderate temperature.

For environments with continuously high humidity, the HMT337 with a warmed, vapor-tight and stainless steel probe is recommended.

Technical Data

Temperature measurement range

-40 ... +80 °C (-40 ... +176 °F) or

-40 ... +120 °C (-40 ... +248 °F)

Accessories

Duct installation kit 210697

Cable gland

PC software + cable

HMP247CG

215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70 211339

Wall mounting plate (plastic)

Pole installation kit

Rain shield

Solar radiation shield

214829

215108

215109

DTR502B

215094 DIN rail installation set

Dimensions

Dimensions in mm (inches)

HMT334 Humidity and Temperature Transmitter for High Pressure and Vacuum Applications

The display shows measurement trends and over four-year real time measurement history.

The HMT334 is ideal for permanent installations into pressurized or vacuum processes.

Features/Benefits

For pressures up to 100 bar and vacuum applications

For temperatures

-70 ... +180 °C (-94 ... +356 °F)

ISO and NPT threads available

Application example: test chambers

Technical Data

Temperature measurement range

-70 ... +180 °C (-94 ... +356 °F)

Operating pressure

0 ... 10 MPa (0 ... 100 bar)

Accessories

Fitting body ISO M22 x 1.5

210697

Fitting body NPT 1/2"

PC software + cable

17225

215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70 211339

Wall mounting plate (plastic)

Pole installation kit

Rain shield

DIN rail installation set

Dimensions

Dimensions in mm (inches)

214829

215108

215109

215094

The Vaisala HUMICAP

®

Humidity and

Temperature Transmitter HMT334 is designed to measure humidity in pressurized spaces or vacuum chambers. Each probe is tested to ensure a gas and vacuum tight installation.

Vaisala HUMICAP® performance

The HMT334 incorporates Vaisala’s more than 30 years of experience in industrial humidity measurement.

The sensor provides accurate and reliable measurement and is immune to particulate contamination and most chemicals.

41 (1.61)

120 (4.72)

170 (6.69)

Graphical display of measurement trends and real time history

The HMT330 series features a numerical and graphical display. The user can easily monitor operational data, measurement trends and up to one-year history.

The optional data logger with realtime clock makes it possible to generate more than four years of measured history, and zoom in on any desired time or time frame.

Using a serial line, the measurement data can be transferred to a PC where it can be further processed and copied to other programs.

HMT335 Humidity and Temperature Transmitter for High Temperatures

The installation flange allows an adjustable installation depth for the probe.

The HMT335 has a robust stainless steel probe ideal for high flow rates in hot processes.

Features/Benefits

For temperatures

-70 ... +180 °C (-94 ... +356 °F)

Long metal probe head

Stainless steel installation flange available

Adjustable installation depth

Application example: hot drying processes

Technical Data

Temperature measurement range

-70 ... +180 °C (-94 ... +356 °F)

Accessories

Mounting flange 210696

PC software + cable 215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70 211339

Wall mounting plate (plastic)

Pole installation kit

Rain shield

DIN rail installation set

Dimensions

Dimensions in mm (inches)

214829

215108

215109

215094

The Vaisala HUMICAP

®

Humidity and

Temperature Transmitter HMT335 has a long stainless steel probe designed for high temperatures.

Robust probe ideal for high flow rates

The HMT335 is ideal for duct measurements as the probe tolerates mechanical stress and withstands high flow rates. The HMT335 can be used, for example, in a hot drying process.

Graphical display of history and measurement trends

The HMT335 features a numerical and graphical display. The user can easily monitor measurement operational data, measurement trends and oneyear measurement history.

The optional data logger with realtime clock makes it possible to generate more than four years of measured history, and zoom in on any desired time or time frame.

Vaisala HUMICAP® performance

The sensor provides accurate and reliable measurement and is immune to particulate contamination and most chemicals.

41 (1.6)

51 (2.0)

192 (7.56)

253 (9.96)

HMT337 Humidity and Temperature Transmitter for High Humidity Applications

The HMT337 is the ideal transmitter for the most demanding process and meteorological measurements.

Technical Data

Temperature measurement range

-70 ... +180 °C (-94 ... +356 °F)

Accessories

Cable gland and AGRO HMP247CG

Duct installation kit (RH probe) 210697

Duct installation kit (T probe) 215003

Swagelok fittings (NPT and ISO) for both RH and T probes

Solar radiation shield

Meteorological inst. kit

DTR502B

HMT330MIK

PC software + cable 215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70

Wall mounting plate (plastic)

Pole installation kit

Rain shield

211339

214829

215108

215109

215094 DIN rail installation set

Dimensions

Dimensions in mm (inches)

The Vaisala HUMICAP ® Humidity and Temperature Transmitter

HMT337 is delivered in one of three configurations:

• Basic: non-warmed probe for moderate humidities

• With a warmed probe: for nearcondensing conditions and dew point measurement

• With a warmed probe and an additional temperature sensor: for near-condensing conditions and relative humidity measurement

True humidity readings in conditions of condensation

The Vaisala unique warmed probe provides fast and reliable

Duct installation kit

Features/Benefits

For high-humidity applications in industry and meteorology

Warmed probe for superior performance in condensing environments

Small, stainless steel, vaportight remote probe

For temperatures

-70 ... +180 °C (-94 ... +356 °F) measurement in environments where humidity is near saturation. The warming prevents condensation from forming on the sensor.

As the probe is warmed, the humidity level inside it stays below the ambient level. With accurate temperature measurement, the ambient dewpoint can be calculated precisely.

If the relative humidity value is needed, an additional temperature sensor is used. The measured ambient temperature provides the compensation for calculating relative humidity and other humidity parameters.

Many ways to install

A tight installation through a process wall can be achieved with Swagelok

® fittings. Meteorological installation kits for outdoor installations and duct installation kits are also available.

37.5 (1.48)

79.5 (3.13)

99.5 (3.92)

HMT338 Humidity and Temperature Transmitter for Pressurized Pipelines

The HMT338 is ideal for installations in pressurized processes where the probe needs to be removed while the is running.

Features/Benefits

Installed through ball valve

– can be inserted and removed while the process is running

Adjustable probe depth

Pressure tolerance 40 bar

For temperatures

-70 ... +180 °C (-94 ... +356 °F)

Two probe lengths available

The Vaisala HUMICAP

®

Humidity and

Temperature Transmitter HMT338 is designed for pressurized processes.

Insert or remove probe while the process is running

With “hot tapping”, the probe is inserted directly into the process while it is running, without the need for venting or lowering the process pressure.

The probe is screwed into a ball valve assembly that has been fixed to the process pipe or wall. The adjustable hex nut is hand-tightened to temporarily hold the probe to the process. Then the probe is pushed down to the appropriate depth. The hex nut is tightened with a wrench to lock the probe in its place. Hot tapping is possible in pressures up to

10 bar.

Graphical display of history and measurement trends

From the display, the user can easily monitor operational data, measurement trends and one-year measurement history.

The optional data logger with real-time clock makes it possible to generate more than four years of measured history, and zoom in on any desired time or time frame.

The battery backup of the real-time clock guarantees a reliable logging of measured data.

Vaisala HUMICAP®

The HMT338 incorporates Vaisala’s more than 30 years of experience in industrial humidity measurement.

The sensor provides accurate and reliable measurement and is immune to particulate contamination and most chemicals.

Technical Data

Temperature measurement range

-70 ... +180 °C (-94 ... +356 °F)

Operating pressure

0 ... 4MPa (0 ... 40 bar)

Accessories

Ball valve set BALLVALVE-1

Pressure fitting ISO 1/2 to NPT 1/2 210662

PC software + cable 215005

USB-RJ45 Serial Connection Cable 219685

Connection cable for HM70

Wall mounting plate (plastic)

Pole installation kit

Rain shield

DIN rail installation set

Dimensions

Dimensions in mm (inches)

211339

214829

215108

215109

215094

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