Category: Relative Humidity

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Relative Humidity

Relative Humidity is the measure of the water vapor content in the air. It is expressed as a percentage (%RH) of the amount needed to achieve saturation at the same temperature. This is an indicator of the likelihood that water droplets will form.

Digital Analogue Temperature and Humidity Transmitter | THS17
R2,434.00 – R3,056.00 ex vat
Digital Analogue Temperature and Humidity Transmitter - Overview

This compact Temperature and Humidity Transmitter is easy to install and boasts economic pricing, high accuracy and long-term stability. It comes in PC fire-proof class plastic and SUS304 metal housing. Suitable for monitoring of HVAC process, air conditioning, environmental ventilation control, buildings, factories, clean rooms and laboratories.

Digital Analogue Temperature and Humidity Transmitter - Features
- Real-time data of temperature & humidity
- PC fire-proof class plastic and SUS304 metal housing
- Economic price, high accuracy, nicer long-term stability
- MEMS semiconductor sensor
- Anti-condensation protection
- Digital: RS-485 ; Analog: 4 ... 20 mA or 0 ... 10 V
- Compact size and elegant outlook and easy to install
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LAN Interface Data Logger | RMS-LOG-L
R10,079.00 ex vat
LAN Interface Data Logger - Overview

This data logger is the component between the humidity/temperature probe and the database in the Rotronic Monitoring System (RMS). It stores 44,000 pairs of measured values from the exchangeable HygroClip probe and transmits them to the RMS database via LAN. It is suitable for absolute data protection, even if the power supply and communications should temporarily break down.

LAN Interface Data Logger - Features
- Compatible with RMS Gateway, RMS server software and RMS Cloud
- Conforms to FDA 21 CFR Part 11 / GAMP5
- Stores 44,000 pairs of measured values
- Fail-safe, internal battery
- 3 yrs battery lifetime
- LAN Interface
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Indoor External Temp Thermometer Hygrometer | HTC-2
R295.00 ex vat
Indoor External Temp Thermometer Hygrometer - Overview

This indoor wall mount or flip stand Hygrometer displays indoor and outdoor temperature, humidity and clock. Comes with a 1.5m cable.

Indoor External Temp Thermometer Hygrometer - Features
- Internal Temperature -10 ~ +50ºC
- Internal Humidity 10 ~ 99% RH
- External Temperature -50 ~ +70ºC
- Accuracy Temp. ±1ºC
- Accuracy Humidity ±5% RH
- Resolution 0.1ºC / 1% RH
- Min / Max Memory
- Clock (12/24 hr)
- Cable Length 1.5m
- Battery Powered 1 x AAA 1.5V Alkaline Battery
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Rotronic Humidity and Temperature Calibration Ampoules | EAXX-SCS
R1,801.00 – R3,562.00 ex vat
Rotronic Humidity and Temperature Calibration Ampoules - Overview

Being equipped with the correct devices and software makes calibrating and adjusting probes on-site at your premises easy. Rotronic calibration devices are small, airtight chambers that fit any 5/12/15/25 mm probes (Rotronic standard 15/25mm). The lower part of the device consists of a screw-on lid. The humidity standard is poured onto an absorbent textile pad into the screw-on lid. The specified humidity is generated in the calibration device after a stabilisation period. High humidity values require a longer stabilisation period. The probe can then be calibrated or adjusted by comparison with the reference value of the humidity standard.

Rotronic Humidity and Temperature Calibration Ampoules - Features
- Simple and safe use
- Traceable to national standard
- Inexpensive calibration on-site
- Unlimited lifetime as long as the glass ampoules are kept sealed
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Digital Thermo-hygrometer | PH1000
R295.00 ex vat
Digital Thermo-hygrometer- Overview

The Thermo-Hygrometer model PH1000 features a large, easy-to-read dual display. With a humidity range of 10 to 99 rH and a temperature range from -50 to +70°C at a resolution of 0.1°C. It also incorporates a 12/24 hour clock. The instrument is housed in a white ABS case which had a foldaway stand and keyhole slot for wall hanging.

Digital Thermo-hygrometer - Features
- Temperature Range -50 to + 70°C
- Humidity Range: 10 – 99 rH
- Accuracy: Temp: +/- 1ºC (2ºF) Humidity: +/- 5% RH
- Display resolution: Temp: 0.1ºC (0.1ºF) Humidity: 1%RH
- Max Min Memory
- Foldaway stand and keyhole slot for wall
- 0.1°C/°F resolution
- Powered 1x 1.5V AAA
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Indoor Thermometer-Hygrometer Clock | 288-CTH
R295.00 ex vat
Indoor Thermometer-Hygrometer Clock - Overview

This indoor digital wall-mount / desktop thermo-hygrometer displays temperature, comfort index, humidity and clock. It uses a AAA Alkaline battery (included)

Indoor Thermometer-Hygrometer Clock - Features
- Indoor Temperature Range: -50~+70°C
- Temperature Accuracy: ±1.0℃（1.8℉）
- Temperature Resolution: 0.1℃（0.1℉）
- Indoor Relative Humidity Range: 10~99%
- RH accuracy: ±5% (35~75%)
- Minimum and Maximum memory with reset
- Comfort index icon
- Desktop stand or wall hanging
- 1 x AAA alkaline battery included
- Size: 150 x 97 x 21mm (LCD 67 x 85mm)
- Comfort Index Display: COMFORT, WET, DRY
- Simultaneous Indication: Temperature, Humidity, CLOCK
- Temperature Indication: ℃／℉
- Max. /Min.Temperature and humidity data store function
- Calendar function, HOUR BEEP function, alarm clock, and 12/24 hour display
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Whirling Hygrometer with Case | T102
R550.00 ex vat
Whirling Hygrometer with Case - Overview

The Whirling Hygrometer, also known as a Sling Psychrometer, is used for measuring relative humidity. It is made from two thermometers mounted on a frame which rotates around a handle and is whirled in the air by hand. One thermometer is covered with a tight-fitting muslin sock which is kept wet by (preferably) distilled water. This type of thermometer is known as the wet-bulb thermometer. The other is the dry-bulb thermometer and exposed to the atmosphere directly. Where the air is less than 100 per cent relative humidity, the wet bulb will display a lower temperature than the dry bulb known as wet-bulb depression. A special chart is used to convert the wet-bulb depression to relative humidity, or the relative humidity can be determined by correlating the readings with those on a simple slide rule, which is supplied with each instrument.

Whirling Hygrometer with Case - Features
- Carry case
- Slide rule
- No mercury
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CO₂, Temperature and Humidity Transmitter | THG03
R6,140.00 ex vat
CO₂, Temp. & Humidity Transmitter - Overview

This 3-in-1 device measures and transmits carbon dioxide, temperature, and humidity readings. For indoor use. Quick and easy to install, with the added benefit of low maintenance.

CO2, Temp. & Humidity Transmitter - Features
- 3 sensors in 1 device with LCD display
- Measures temperature, carbon dioxide & humidity
- 2 analogue outputs and Modbus RS-485
- Optional analogue output + RS-485
- Cost-efficient and reliable
- Data can be logged and transferred to PC via RS-485 function
- Quick easy installation and maintenance
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1
CO2 Display | Rotronic
R18,351.00 ex vat
CO2 Display - Overview

This CO2 display simultaneously measures and records CO2, humidity and temperature. It can be wall-mounted or put on a bench-top. Configurable directly via buttons. Stored data can be exported to a USB memory stick for analysis with the free ROTRONIC software package SW21. This instrument offers unbeatable value for money. It comes equipped with the stable ROTRONIC HYGROMER® IN-1 humidity sensor. Suitable for Indoor Air Quality, Open-Plan Offices, Classrooms, Meeting Rooms, Shopping Centers, and Fitness Studios.

CO2 Display- Features
- Adjustable, visual CO₂ indicator
- Measures and records CO₂, relative humidity and temperature
- Accuracy ±2.5 %RH / ±0.3 K / ±30 ppm + 5% of measured value
- Humidity sensor HYGROMER® IN-1
- 18,000 data point memory for CO₂, humidity and temperature values
- Display of date and time
- Large, easy-to-read display
- USB access for data download
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Wireless Mini Data Logger | RMS-MLOG
R5,021.00 – R7,008.00 ex vat
Wireless Mini Data Logger - Overview

The mini data logger is a low-cost wireless data logger used with the ROTRONIC Monitoring System (RMS). Its small housing and wireless interface make it really flexible. Extremely versatile, it can be used in a broad spectrum of applications such as refrigerators, incubators, door contacts and OEM analogue devices.

Wireless Data logger variants:
- Temperature & Humidity
- Temperature sensor (NTC)
- External temperature sensor (NTC)
- Light
- Voltage measurement,
- Current measurement 0-20mA
- Digital switch contact
Extremely versatile, it can be used in a broad spectrum of applications such as refrigerators, incubators, door contacts and OEM analogue devices.

Wireless Mini Data Logger - Features
- Conforms to FDA 21 CFR Part 11 / GAMP5
- Stores 10,000 measured values
- Syncs with remote database when connected
- The internal battery is a Fail-safe
- Battery lifetime 3 years
- Depending on the version, it measures temperature, current, voltage, or light, or monitors a digital switch input
- Compatible to FDA 21 CFR Part 11 / GAMP5
Requires an RMS Gateway connected to Internet, together with software RMS server software or RMS Cloud

https://www.youtube.com/watch?v=W4aYACPFifA

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Accurate Humidity Sensor Probe | HC2A-S
R7,900.00 – R26,013.00 ex vat
Accurate Humidity Sensor Probe - Overview

This humidity sensor, HC2A-S / HC2A-S3 is the most versatile probe from ROTRONIC and forms the basis of the product portfolio. It measures humidity and temperature and calculates the dew/frost point. Used in HVAC, food, building services equipment, paper, textile and pharmaceutical industries.

Accurate Humidity Sensor Probe - Features
- 100% field interchangeable
- Calibrate sensor without having to disconnect the transmitter
- Relative humidity, temperature measurement and dew point calculation
- Excellent long-term stability <1 %RH / year
- Humidity sensor accuracy from ±0.5 %RH
- Integrated data acquisition and calibration history
- Auto-diagnostics with error compensation
- Programmable alarm functions
- Advanced easy-to-use calibration features
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Economical Thermo-Hygrometer and Logger | TA622C
R1,795.00 ex vat
Economical Thermo-Hygrometer and Logger - Overview

This handheld economical thermo-hygrometer, measures and logs temperature, humidity and dewpoint.

Economical Thermo-Hygrometer and Logger - Features
- Relative humidity: 0~100% (accuracy ±3% from 10-90%, maximum 5%)
- Temperature: -10~+80°C (accuracy ±0.5°C)
- Dewpoint and Wet bulb readings
- 4000 groups memory (Timer based 00:00:00, No date and time)
- USB and free software download
- Dual backlit LCD display with auto power off
- Max, Min and data hold
- Probe 170mm long x 15mm diameter on 2m lead
- c/w carry case, probe and battery
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Coffee Pro Moisture Meter | TG-PRO
R8,900.00 ex vat
Coffee Pro Moisture Meter - Overview

The special design of this device and compression of the sample before measurement enables precise moisture measurement. This innovative solution has advanced technology, USB connection and the possibility to connect an external temperature probe. Suitable for use with Cocoa 4% - 20%, Green Coffee Arabica 8% - 30%, Green Coffee Robusta 8% - 30%, Parchment Coffee Arabica 8% - 39%, Dry Coffee Cherry 6% - 21%, Coffee Arabica Coarsely Milled 2% - 10.5%, Coffee Arabica Finely Milled 2% - 9.5%, Coffee Robusta Coarsely Milled 2% - 11.5%, Coffee Robusta Finely Milled 2.5% - 8.5%, Roasted Coffee Arabica 2% - 9.5% and Roasted Coffee Robusta 2% - 9%.

Coffee Pro Moisture Meter - Features
- Impedance measuring method with 4 frequencies for increased stability
- Screw cap buzzer alert for sufficient grain compression
- Automatic temperature compensation and grain temperature display
- Moisture Range: Up to 40% (grain type dependent)
- Small sample volume 90 ml
- Resolution: 0.1% and 1ºC
- Accuracy: ±0.5% for standardized grain types
- Offset calibration adjustment to improve accuracy
- Internal memory for 50,000 measurements with date and time
- Backlit graphic LCD shows actual grain type, % moisture and temperature
- 4 x AA Alkaline batteries, approx. 77 hours use without backlight
- USB port for data transfer to PC (free software download)
- Compact size: 165 x 70 x 75mm (550g including batteries and cap)
- Optional temperature probes available
- c/w carry case, strap, USB cable, batteries and manual
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3
Handheld Air Velocity, Humidity and Temperature Meter AFP1
R5,162.00 ex vat
Handheld Air Velocity Meter - Overview

The intelligent AFP1 multi-parameter measuring instrument is ideal for spot measurements in HVAC systems. Thanks to easy operation via a smartphone, it is possible to take random measurements and record, export and display data as wanted. The AFP1 sensor is operated via Bluetooth communication with the ROTRONIC smartphone app, which can be obtained free of charge from the App Store (iOS) or Play Store (Android). The app offers functions to display, log and send the required measured values by e-mail. It is also possible to define parameter-specific settings and options for the measurement.

Handheld Air Velocity Meter - Features
- Intelligent multi-parameter measuring instrument for air velocity, humidity and temperature
- Small vane anemometer for in-tube measurements
- Telescopic rod extends to 1.2 meter
- Smartphone connection via Bluetooth®
- Easy data logging via iOS or Android app
- Direct volume flow calculation
- Numeric or graphic display
- Simple data export for evaluation on a PC
Delivery package
- Factory certificate
- Short instruction manual
- APP (online)
- Batteries 2 x 3 V (CR2032)
- Soft case
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HVAC Humidity and Temperature Transmitter | HygroFlex HF5
R11,010.00 – R16,551.00 ex vat
HVAC Humidity and Temperature Transmitter - Overview

The HF5-series is a measurement transmitter for humidity, temperature and dewpoint. It is compatible with the HygroClip2 series probes which integrate AirChip3000 technology. When combined with a HC2A-S advanced probe, it provides superb precision and state-of-the-art functionality, taking humidity and temperature measurement to a whole new level of accuracy < 0.8 %rh and < 0.1 K at 10...30 °C. Applications include HVAC, heating, ventilation, air conditioning, food industry, pharmaceutical industry, printing and paper industries.

HVAC Humidity and Temperature Transmitter - Features
- Relative humidity and temperature measurement
- Dew Point and other psychrometric calculations
- Interchangeable probe for easy maintenance
- Low voltage and mains versions
- Freely scalable analogue signals
- Various digital outputs are available
- Available with metal housing
- Robust, industrial-quality housing
- Wall or duct mounting
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