The HMT360 series are the ideal solution for humidity control in hazardous areas.
- They operate safely and reliably in explosive atmospheres of category 1 (zone 0).
- Performance and proven technologies of HMT360 transmitters comply with international standards.
Caracteristics & Benefits
- Measurement of humidity and temperature, and calculates other parameters: dew point, mixing ratio, absolute humidity and wet bulb temperature
- Safe operation of the transmitter and sensor in ATEX zone: Category 1G / Zone 0 and 1D / Zone 20 with protective cover
- Intrinsically safe
- Excellent performance in harsh environments
- The HUMICAP sensor is accurate and reliable and provides excellent long-term stability and negligible hysteresis
- Five interchangeable probes
- Temperature range from -40 to 180 ° C depending on the type of probe
- NIST traceable (certificate included)
Intrinsic Safety
The entire HMT360 transmitter housing can be installed directly in explosive areas. The HMT360 transmitters can withstand continuous exposure to potentially explosive environments that contain flammable gases or dust.
Configuration Bespoke
Options and accessories offer great versatility to the HMT360 series. The user can specify the transmitter configuration when ordering, tutefois it is possible to change the configuration on site.
Five Interchangeables Sensors
| The HMT360 offers five probe options for various applications | |
| HMP361 | For wall mounting |
| HMP363 | For confined spaces |
| HMP364 | For applications under pressure |
| HMP365 | For high temperature |
| HMP368 | For high pressure applications |
Interchangeable probes can be removed easily and quickly or reinstalled when needed. The modular structure facilitates the calibration and maintenance. The same control unit can be used for calibration of different HMT360 probes due to their interchangeability. All calibration parameters are included in the probe itself allowing great flexibility of use without accuracy is affected.
Optimized Sensors
In addition HUMICAP sensor, Vaisala also offers sensors for specific applications with presence of chemical compounds.
Long-term Solution
The HMT360 transmitters are a long term investment; their robust design and sustainable maintenance for the control of humidity and dewpoint in explosive environments. Calibration and maintenance contracts are available on request.
| CAT. NO. | DESCRIPTION |
| VAHMT360-0 | Humidity transmitter and intrinsically safe temperature |
| Interchangeable probes | |
| VAHMP361-0 | Interchangeable probe for wall mounting |
| VAHMP363-0 | Interchangeable probe for confined spaces |
| VAHMP364-0 | Interchangeable probe for applications under pressure |
| VAHMP365-0 | Interchangeable probe for high temperature |
| VAHMP368-0 | Interchangeable probe for high pressure applications |
| Options and Accessories | |
| VAHMP233FAH | Duct installation kit for HMP363 |
| VAHMP235FA | Mounting flange for HMP365 aluminum |
| VAHMP235FS | Mounting flange for HMP365 stainless |
| VADMP248BVS | Ball valve assembly for HMT368, pressure range at 20 ° C: 0 to 40 bar (at the necks of the installation, max 10 bar) |
| VA25905ZZ- | Serial cable for PC RJ45 connectors - D9 female |
| VAHMT360SAR | Protective shelter against rain |
| VA214101-0 | Protective cover for use with flammable dust |
| VA211011-0 | Calibration kit adapter HMK15 for 12mm diameter probes |
| VA212483-0 | Galvanic isolator |
| VA210664-0 | Zener barrier |
| Performance | |
| Relative humidity | |
| Measuring range | 0 to 100% |
| Accuracy (including non-linearity and repeatability) max accuracy. reached from a high quality calibration with certified elements | ± 1% RH (0 to 90% RH) ± 2% RH (90 to 100% RH) |
| Accuracy (including non-linearity and repeatability) during a calibration saline (ASTM E104-85) | ± 2% RH (0 to 90% RH) ± 3% RH (90 to 100% RH) |
| Response time (90%) at 20 ° C | 15 seconds (in the constant flow air with sintered filter) |
| Humidity Sensors |
|
| Temperature | |
| Measuring range | -40 To 180 ° C (-40 to 356 ° F) depending on the selected probe |
| Electronics precision at 20 ° C | ± 0.1 ° C (± 0.18 ° F) |
| Electronics temp dependence. | 0005 ° C / ° C (0005 ° F / ° F) |
| Temperature sensor | Pt 1000 RTD 1/3 Class B IEC 751 |
| Terms of use | |
| Temperature range (operation of the electronics) | -40 To 60 ° C |
| Temperature range with display | -20 To 60 ° C |
| Storage temperature range | -40 To 70 ° C |
| Pressure range | See CTG probes |
| In accordance with | EMC EN61326-1: 1997 + Am1: 1998 + Am2: 2001 Industrial Environment |
| Note: Compliance with IEC 1000-4-5 only if it uses an external overvoltage limiter EXi approved in a non-explosive atmosphere | |
| Entered and Outputs | |
| Power supply | 12 to 28V |
| Supply voltage with serial port (service mode) | 15-28 V |
| Two analog outputs | 2 son 4 to 20mA (one as standard, optional) |
| Precision characteristic of analog output temperature | 0.005% / ° C of full scale |
| Analog outputs | Connecting with barrier |
| RS232C serial output for maintenance | RJ45 connector |
| Display | LCD two lines |
| Classification with current output | |
| Europe / CENELEC (PTB) | |
| EU (94/9 / EC, ATEX100a) | II1G, Ex ia IIC T4 PTB 00 ATEX 2112 X |
| Safety factor | Ui = 28 V, Ii = 100mA, Pi = 0.7W Ci = 1 nF, Li = 0 H |
| Environmental specifications | T amb: -20 to 60 ° C (-4 to 140 ° F) P amb: 0.8 to 1.1 bar |
| USA (FM) | |
| Class I, II, III, Division 1, Groups AG and Division 2 Groups G and ASF FM Project ID: 3010615 | |
| Factors of safety | Vmax = 28 VDC, Imax = 100mA, Ci = 1 nF, Pi = 0.7W, Li = 0, T amb = 60 ° C (140 ° F),T5 |
| Japan (TIIS) | |
| Ex ia IIC T4 Code number: C15354 | |
| Factors of safety | Ui = 28 VDC, Ii = 100 mA, Ci = 1 nF, Pi = 0.7W, Li = 0, T amb = 60 ° C (140 ° F) |
| Australia (TestSafe) | |
| Ex ia IIC T5 IP65 Certificate No: Ex AUS Ex 3738X | |
| Factors of safety | Ui = 28 V, Ii = 100mA, Pi = 0.7W, Ci = 1 nF, Li = 0 mH |
| Canada (CSA) | |
| |
| Factors of safety | T amb = 60 ° C, T4, Intrinsically Safe losqu'il is hardwired following the recommendation DRW213478 |
| Mechanical components | |
| Connections | Screw terminals 0.33 à2.0mm 2 son (AWG 14-22) |
| Gland | Pg11 (5 to 12mm) |
| Connection to leads | Pg11 / NPT 1/2 "-14 |
| Material | -40 To 60 ° C (-40 to 140 ° F) |
| Housing material | G-AlSi10Mg (DIN 1725) |
| Degree of protection housing | IP65 (NEMA 4) |
| Housing weight | 950g |
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