DKRF470 Industrial Humidity Transmitter
The DKRF470 Series by Driesen + Kern features a broad choice of sensor heads widely extending its potential fields of application. Avoid downtimes with the reasonably priced probe SKU470 which can easily be exchanged on site.
Product Features
- IP65 protected and non-corroding transmitter housing
- Miniature probe (D=4mm)
- Probes for high pressure up to 30bar / 100bar
- Sensor cables up to several hundred metres
- Wide temperature range: -40...+120°C
- Optional calculated parameters: dew point, absolute humidity, mixing ratio, wet-bulb temperature
- Blue backlit LCD (good readability in dark environments)
- Calibrated, digital measuring head for smooth replacement
Accurately monitor and control relative humidity and temperature in plants and other industrial environments. The DKRF470 provides analog signals on two outputs, either 4...20mA current loop, 0...1V/0...5V/0...10V or 4...20mA three-wire.
Industrial processes rarely leave enough time for maintenance. Processes need not be interrupted. The DKRF470 helps you avoid downtimes because the sensor head can be replaced without recalibration. Just order the sensor head with a calibration certficate and quickly replace the part. Your plant or machine will be operational again in seconds instead of standing idle for weeks due to a pending calibration of the transmitter.
The replacebale probes also make adjustments to your facilities comfortable and cost-saving. If the point of measurement is relocated you might just need a probe with a longer cable insteaf of an entirely new transmitter.
Their accuracy, being better than 1.8 RH and 0.3°C (optionally 0.1°C), guarantees precise and long-term stable readings for a broad range of applications, such as in manufacturing processes, drying chambers, or for monitoring sensitive goods in warehouses. Prevent defective goods and reduce energy costs at the same time.
The transmitters can be equipped with a backlit LCD allowing for users to comfortably check on both readings (RH & T) as well as the calculated values in real time. All data can be transmitted to your system control via the analog outputs.
Cable lengths of several hundred metres between the transmitter and its probe are feasible without the need for a special calibration.
Finding the Right Model for Your Application
Choosing a model from the DKRF470 series is largely based on the question where and how you want to install the transmitter.
The DKRF471 and DKRF472 have their probes attached to the housing. While the DKRF471 is designed for wall mounting, the DKRF472 is intended for installation in ducts, pipes and vents.
The DKRF473 features a cable probe for direct process integration. As model DKRF473-EXT it has a smaller probe that can withstand higher temperatures up to 120°C. An even smaller version is the sensor head SK473-EXT-XXS with a diameter of only 4mm. Both the DKRF473-EXT-D and the DKRF474 are models with pressure resistant probes - the DKRF474 can even operate under conditions with up to 100 bar.
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| DKRF471 for wall mounting | DKRF472 for installation in ducts or pipelines | DKRF473 for direct process integration (Tmax=90°C) |
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| DKRF473-EXT for direct process integration, but Tmax=120°C | DKRF474 for measurements in pressurized environments | Sensor head replacements: SK470, SK473-EXT-XXS and SK473-EXT-D |
Calibration Certificates for Your Documentation
We offer optional DAkkS traceable calibration certificates with 3 actual values for relative humidity and 1 temperature reference point at 25°C.
Alternatively, we can provide a certificate with more or with other reference points, and als a DAkkS certificate. Don't hesitate to contact us today!
We offer calibration services in our own laboratory, on-site calibration and replacement probes - you decide what best suits your needs.
Checking or recalibrating your sensors on-site is made easy with our small Humidity Checks
which are independent of orientation and can be ordered with a variety of saturated salt solutions.
