- 3 in 1 sensor: absolute pressure, temperature and humidity in the room
- Modbus-RTU, Ethernet or M-Bus interface
- Alarm relay – limit value adjustable via buttons (max 60 VDC, 0.5 A)
- Optional: 2 x 4...20 mA analogue outputs, 2 x alarm relays, e.g., for dew point and temperature
 Datasheet |
| User Manual |
- Operating temp. up to 150 °C
- Accuracy : ±1,5 % RH
- On-site calibration
- IP65
- Stainless steel sensor tube
- Modulair, can be combined
| Datasheet |
- Operating temp. up to 200 °C
- Accuracy : ±1,5 % RH
- On-site calibration
- IP65
- Stainless steel sensor tube
- Modulair, can be combined
| Datasheet |
- Operating temp. up to 200 °C
- Accuracy : ±1,5 % RH
- On-site calibration
- IP65
- Stainless steel sensor tube
- Modulair, can be combined
| Datasheet |
- Operating temp. up to 80 °C
- Accuracy H. ±2% RH (5…95 % at 10…40 °C)
- IP66
- ATEX approval
- Categories 1/2 G and 2D
- Stainless steel sensor tube
- Intrinsically safe design
|
Datenblatt
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- Operating temp. up to 80 °C
- Accuracy H. ±2% RH (5…95 % at 10…40 °C)
- IP66
- ATEX approval
- Categories 1/2 G and 2D
- Stainless steel sensor tube
- Intrinsically safe design
| Datenblatt |
- Operating temperatures up to 80 °C
- Accuracy H.: ± 2 % RH
- Accuracy T.: ±0,2 K (with voltage output)
- Accuracy T.: ±0,3 K (with current output)
- On-site calibration
- Electronics based on micro controller
- Easy to install
- With the highly dynamic capacitive MELA® sensor element
| Datasheet |
- Operating temperatures up to 80 °C
- Accuracy H.: ± 2 % RH
- Accuracy T.: ±0,2 K (with voltage output)
- Accuracy T.: ±0,3 K (with current output)
- On-site calibration
- Electronics based on micro controller
- Easy to install
- With the highly dynamic capacitive MELA® sensor element
| DatASHEET |
- for measuring relative humdity (h.r.) and temperature
- with capacitive Mela® sensing element
- for use in air-conditioning systems
- building management systems
- ventilation technology
- different models
|
Datasheet
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- Designs available: Duct version, Wall mounting, Rod-shaped, Room version
- IP 65 with PTFE sintered filter ZE05
- Sensor tube Ø 12 mm
- Output signals available: 0...1 V / 0...5V / 0...10 V / 4...20 mA / passive
- Operating voltage: 12...30 V DC
- Special version: sealing against vibrations or condensation
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Datasheet
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- Designs available: Duct version, Wall mounting, Rod-shaped, Room version
- IP 65 with IPTFE sintered filter ZE05
- Sensor tube Ø 12 mm
- Output signals available: RS232 or RS485 MODBUS RTU
- Operating voltage: 6...30 V DC
- Special version: sealing against vibrations or condensation
- Accuracy:
- Humidity: ± 3% rh 30...80 % rh at 10...40 °C
- Temperature ± 0,8 K 10...40 °C
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Datasheet
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- with the robust Polyga® humidity measuring element
- excellent measuring properties
- very high accuracy in high humidity
- outstanding durability
- washable measurement element
- IP64
- high-grade steel sensor material
|
Datasheet
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- Robust design
- Pressure resistant up to 500 bar
- Long-term stable humidity sensor, approved for years
- 4...20 mA analogue output in 2-wire system
- Further parameters adjustable via software: % RH, g/m³, mg/m³, ppm, V/V, g/kg
- NEW: Higher resolution of the sensor signal due to improved evaluation electronics
| Datasheet |
- Measuring range -80...20°Ctd
- Analogue output 4...20 mA
- Precise, long-term stability
- Condensation insensitive
- Quick response time
- Pressure-tight up to 350 bar (special version
- NEW: Modbus-RTU interface
- NEW: Higher resolution of the sensor signal due to improved evaluation electronics
- Sensor diagnosis on site by means of hand-held instrument or Service Software
| Datasheet |
- Analogue output 4...20 mA
- Precise, long-term stability
- Quick response time
- Measuring range -20...50°Ctd
- NEW: Modbus-RTU interface
- Sensor diagnosis on site by means of hand-held instrument or Service Software
| Datasheet |
- Robust, waterproof die-cast aluminum housing, IP 67
- Alarm relay - limit value adjustable via buttons (max 60VDC, 0.5 A)
- 4 ... 20 mA analog output
- Optional: 2 pieces 4 ... 20 mA analog output e.g. for dew point and temperature
- Extremely long-term stable
- Fast adjustment time
- Pressure resistant up to 500 bar (optional)
- NEW: Modbus RTU interface
- NEW: Ethernet interface (optional)
- NEW: Higher resolution of the sensor signal due to improved evaluation electronics
- NEW: Sensor diagnosis on-site with handheld device or CS Service Software
- Readable via Modbus: pressure dew point [° Ctd.], temperature [° C], rel. humidity [% RH], abs. humidity [g / m3], degree of humidity [g / m3], moisture content V / V [ppmV / V], Partial vapor pressure [hPa], atmospheric dew point [° Ctd.atm]
| Datasheet |
- NEW: Modbus-RTU interface
- NEW: Higher resolution of sensor signal caused by the improved evaluation electronics
- NEW: Sensor diagnosis on site with a portable device or Service Software
- Integrated display
- Threshold value adjustable via keypad alarm relay (max. 60 VDC, 0,5 A)
- Pressure-tight up to 350 bar (special version)
- Extreme long-term stability
- Quick response time
- 4...20 mA analogue output
- 2 versions: Refrigeration driers and desiccant driers
| Datasheet |
- Percise dew point measurement down to -80°Ctd
- Quick response time
- 3.5" graphic display / easy operation via touch screen
- Integrated data logger for storage of the measured values
- USB interface for reading out via USB stick
- Calculates all necessary moisture parameters like g/m³, mg/m³, ppm V/V, g/kg, °Ctdatm
- International: Up to 8 languages selectable
 Datasheet |
- Separate pressure measurement
- Dew point distance via external temperature sensor
- Compressed air consumption measurement
- Active power in kWh/kW
| Datasheet |
- 3.5" graphic display - easy operation with touch screen
- System ready for plug-in: Everything completely wired
- 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
- An alarm delay can be set for each alarm relay
- 4...20 mA analogue output
- Option: Ethernet and RS 485 interface (Modbus protocol)
- Option: Webserver
| Datasheet |
- System ready for plug-in: Everything completely wired
- No time-consuming studying of the instruction manual
- 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
- 4...20 mA analogue output
- Option alarm unit: Buzzer and continuous red light
| Datasheet |
- System ready for plug-in: Everything completely wired
- No time-consuming studying of the instruction manual
- 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
- 4...20 mA analogue output
- Option alarm unit: Buzzer and continuous red light
| Datasheet |
- System ready for plug-in: Everything completely wired
- No time-consuming studying of the instruction manual
- 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
- 4...20 mA analogue output
- Option alarm unit: Buzzer and continuous red light
| Datasheet |
- System ready for plug-in: Everything completely wired
- No time-consuming studying of the instruction manual
- 2 alarm contacts (230 VAC, 3 A) pre- and main alarm freely adjustable
- 4...20 mA analogue output
- Option alarm unit: Buzzer and continuous red light
| Datasheet |
- -80...20 °Ctd
- Integrated display
- Threshold value adjustable via keypad alarm relay (max. 60 VDC, 0.5 A)
- Pressure-tight up to 350 bar (special version)
- Extreme long-term stability
- Quick response time
- 4...20 mA analogue output
- 2 version: Refrigeration dryers and adsorption dryers
| Datasheet |
- Optimized design for tight space conditions in drying systems
- Measuring range -80...20°Ctd
- Extremely long-term stable
- Analogue output 4...20 mA or modbus-RTU interface
- Condensation insensitive
- Quick response time
- Pressure-tight up to 350 bar (special version)
- NEW: Higher resolution of the sensor signal due to improved evaluation electronics
- NEW: Sensor diagnosis on site by means of hand-held instrument or CS Service Software
| Datasheet |
- for semi-industrial and industrial applications
- operating temperature up to +80 °C
- humidity measuring range 0...100% r.F.
- with voltage or current outputsignal: 0...1 V, 0...10V, 4..20 mA
- duct-version
|
Datasheet
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- for measuring relative humidity and temperature
- with capacitve Mela® humidity sensing element
- with current or voltage output
- compact sensor in a high-grade steel housing
- IP 65 protection
|
Datasheet
|
- Measuring range -80...20°Ctd
- Extremely long-term stable
- Analogue output 4...20 mA
- Condensation insensitive
- Quick response time
- Pressure-tight up to 350 bar (special version)
| Datasheet |
- Analogue output 4...20 mA
- Precise, long-term stability
- Quick response time
- Measuring range -20...50°Ctd
| Datasheet |
- Optimum adjustment concept thanks to adjustment of the entire signal chain incl. analog adjustment
- Ethernet, relay and analog outputs allow optimum integration into individual automation systems
- Self-monitoring and early warning guarantee high system availability
- Calculation and presentation of the humidity parameters relative humidity absolute humidity and dewpoint.
- P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
- Display with multi-language display
- High-quality plastic housing
|
Datasheet
|
- Optimum adjustment concept thanks to adjustment of the entire signal chain incl. analog adjustment
- Profibus, Ethernet, relay and analog outputs allow optimum integration into individual automation systems
- Self-monitoring and early warning guarantee high system availability
- Calculation and presentation of all relevant humidity parameters
- P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
- Display with multi-language display
- Robust, easy-to-clean metal housing
|
Datasheet
|
- 3 in 1 sensor: absolute pressure, temperature and humidity in the room
- Modbus-RTU, Ethernet or M-Bus interface
- Alarm relay – limit value adjustable via buttons (max 60 VDC, 0.5 A)
- Optional: 2 x 4...20 mA analogue outputs, 2 x alarm relays, e.g., for dew point and temperature
| Datasheet |
| User Manual |
Humidity Sensors – precise RH/T measurement for HVAC, cleanrooms & process
Humidity sensors measure relative humidity (RH) and temperature, with options for dew point or water activity. Available as room/duct transmitters, process probes and in-line sensors (e.g., compressed air). Depending on model, they offer analog outputs, fieldbus and diagnostics (drift/status).
Key features: fast-response capacitive RH elements, interchangeable sensor modules, filter/heated caps, IP54–IP67, ATEX/IECEx options, hygienic design (CIP/SIP resistant) and optional factory/DAkkS calibration.
ICS Schneider Messtechnik supports selection, placement, calibration strategy, validation and IIoT integration with BMS/SCADA/cloud.
FAQ on Humidity Sensors
Answers on sensor technology, accuracy, installation, protection, interfaces, calibration and best practices.
Which sensing technology is used?
Predominantly capacitive polymer RH/T elements. For very dry gases use dew-point/trace-humidity sensors; chilled-mirror devices serve as lab references.
What accuracy is realistic?
Quality probes typically achieve ±1…2 %RH and ±0.2…0.3 °C in the nominal range. Installation, thermal equilibrium and airflow strongly influence results.
How does temperature affect RH?
RH is temperature-dependent. Keep sensor, medium and reference isothermal; avoid drafts, radiant heat and housing self-heating.
Which form factors are available?
- Room/wall transmitters for buildings & cleanrooms
- Duct probes with insertion tube
- Process probes with guard/filter (also ATEX)
- In-line dew-point sensors for compressed air/gases
Which filter/guard caps should I use?
| Variant | Use case | Notes |
|---|---|---|
| PTFE sinter | Dust, splash | Good protection, low delay |
| Stainless mesh | Harsh/oil mist | Robust; clean regularly |
| Heated cap | Condensation risk | Prevents fogging; needs power |
| Chem-resistant | Aggressive gases | Verify material compatibility |
How do I install sensors correctly?
In ducts, mount perpendicular to airflow with sufficient insertion depth, away from bends/dampers (observe straight runs). In rooms, place away from doors/heat sources at a representative height.
What matters for compressed-air/gas dew point?
Pressure dew point differs from atmospheric dew point. Use bypass sampling with a flow restrictor, add filters (particles/oil), and allow warm-up/regeneration.
Which outputs & interfaces are available?
| Category | Examples | Application |
|---|---|---|
| Analog | 4–20 mA, 0–10 V | PLC/controllers, long lines |
| Digital | Modbus RTU/TCP, BACnet, IO-Link | Multiple values & diagnostics |
| Network | Ethernet/PoE, MQTT via gateway | Cloud/SCADA/IIoT |
How often should I recalibrate?
Rule of thumb: annually; semi-annually for QA-critical tasks. After shock/replacement, perform an interim check with salt solutions or a humidity generator.
Which calibration methods work best?
Saturated salt solutions (fixed points), controlled humidity generators/chambers, and chilled-mirror references. Always define a stability window (ΔRH/Δt).
How do I detect drift or contamination?
Increasing deviations at check points, slower response and more noise. Mitigation: clean per manufacturer guidance, recalibrate, or swap the sensor module.
How do I protect against condensation & chemicals?
Use heated/protective caps, chem-resistant filters, minimize exposure time, and shorten intervals under harsh conditions.
Are hygienic or Ex variants available?
Yes—hygienic designs with smooth surfaces and FDA-compliant seals, plus ATEX/IECEx certified probes/transmitters with suitable barriers.
How do I document compliantly?
Include as-found/as-left, point lists, traceability chain, ambient data (T/RH) and expanded uncertainty k=2; export PDF/CSV with optional audit trail/e-signature.
What common pitfalls should I avoid?
- Wrong placement (drafts, radiant heat)
- Missing/blocked filters
- Temperature gradients between sensor & medium
- Insufficient stabilization before reading/calibration
Do you help with design & validation?
Yes—we define measurement points, select the probe/interface, plan calibration intervals, provide certificates and integrate sensors with BMS/SCADA/IIoT.