- AC Drives
- Industrial Communications
- PLC & I/O Cards
- Vibration Monitoring
- Automation Accessories
- Controllers & Data Acquisition
- CCTV & Security
- Safety Switches & Guard Locking
- Encoders
- Industrial Computers
- Servo Drives
- Motor Soft Starters
- HMI Displays
- Pneumatic Cylinders
- Isolator & Barrier
- Automation Software
- Machine Vision
- Robotics
Temperature Instrumentation
Humidity & Dew Point Instruments
Humidity and dew point instruments measure moisture in air and gases for HVAC, clean rooms, warehouses, compressed air and industrial drying. Seven Star LLC, an independent supplier in Muscat, supplies humidity and dew point instruments from Vaisala, JUMO, Siemens and CS Instruments to customers in Oman and the GCC.
Read the full category guide- 14 products
- 4 brands
Category guide
About Humidity & Dew Point Instruments
Humidity and dew point instruments measure moisture in air and gases for HVAC, clean rooms, warehouses, compressed air and industrial drying. Seven Star LLC, an independent supplier in Muscat, supplies humidity and dew point instruments from Vaisala, JUMO, Siemens and CS Instruments to customers in Oman and the GCC.
Types of humidity transmitter in this category
Industrial humidity transmitters such as the Vaisala HMT330 and JUMO hydroTRANS H50, probes like the Vaisala HMP7 and HMP110, and wall, duct and room transmitters including the JUMO hydroTRANS S10, S20 and S30 and Siemens QFM1660 serve HVAC and process duties. Dew point transmitters like the Vaisala DMT143 and DMT152, the intrinsically safe DMP370 and the CS Instruments FA 510/515 monitor compressed air and gas dryers. JUMO hygrostats and wireless transmitters complete the range.
How to select a humidity transmitter
Define the measuring range for relative humidity or dew point, temperature range and the gas or air being measured. Choose wall, duct or remote probe mounting, output signals and display. For compressed air, define the line pressure and required dew point range. Check calibration and hazardous area needs.
Data needed for a quotation
Send the model, or range, temperature, mounting, output, pressure for dew point and quantity.
What to include in your inquiry
These details let us quote the right item the first time.
- Sensor type (RTD, thermocouple) or transmitter model
- Temperature range
- Insertion length, diameter and thermowell
- Process connection
- Output signal (4-20 mA, HART, fieldbus)
- Hazardous-area approval, if required
Missing some of them? Send what you have. A nameplate photo or an old part number is enough to start.
Brands in Humidity & Dew Point Instruments
All brands →
Related categories
Request a Quote for Humidity & Dew Point Instruments
Looking for a specific model, part number or brand in Humidity & Dew Point Instruments? Send us your requirements and quantities. Seven Star LLC sources genuine industrial equipment for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
Other enquiries: [email protected] · WhatsApp
Frequently Asked Questions
What is the difference between relative humidity and dew point?
Relative humidity is the moisture as a percentage of saturation at the current temperature. Dew point is the temperature at which the moisture would condense.
Why measure dew point in compressed air?
Moisture in compressed air causes corrosion and damages tools and products. A dew point transmitter confirms the dryer is working.
How often should humidity sensors be calibrated?
Typically once a year, or more often in harsh or contaminated environments.
Can humidity transmitters also measure temperature?
Yes. Most models output both humidity and temperature and can calculate dew point.
What should I send for a quotation?
The model, or range, temperature, mounting, output, pressure for dew point and quantity.