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OKS A industrial pyrometers – fast temperature measurement from room temperature
Non-contact temperature measurement for metals and ceramics – with response times from 5 ms.
Proxitron OKS A series pyrometers measure the temperature of metals and ceramic materials quickly and without contact. With measuring ranges of 20 to 850 °C or 30 to 1,000 °C, they support thermal processes starting at room temperature – from heating and processing through to cooling.
These fixed infrared pyrometers combine a low starting temperature with response times from 5 ms. This makes them particularly suitable for dynamic processes where rapid temperature changes are relevant to process control and monitoring. Typical applications include metal processing, heat treatment, brazing and sintering systems, and the ceramics industry.
Three different fixed-focus optics allow the pyrometers to be matched to the target size and measuring distance. The close-focus optics enable spot diameters as small as 1.7 mm at a measuring distance of 95 mm. The integrated LED aiming light makes it easier to align the device with the measuring point.
The analogue output and RS-485 interface with Modbus RTU allow the temperature measuring devices to be integrated into higher-level measurement and control systems. Adjustable emissivity enables adaptation to different materials and surfaces.
Product features
✓ Two measuring ranges: 20–850 °C and 30–1,000 °C
✓ Short response times t95 from 5 ms
✓ Spectral range of 3–5 µm
✓ Measurement error according to the data sheet: 0.6% of reading + 1 K
✓ Close-focus, standard and long-distance optics to suit the measuring point
✓ Spot diameters from 1.7 mm with close-focus optics at a measuring distance of 95 mm
✓ Adjustable emissivity from 0.05 to 1.00
✓ Integrated, switchable LED aiming light
✓ Integrated maximum and minimum value memory
✓ 4–20 mA analogue output
✓ RS-485 interface with Modbus RTU
✓ Configuration and measurement data analysis using Windows software
✓ Robust M40 stainless steel housing, IP65 protection rating
✓ Ambient temperature from 0 to +70 °C
✓ Comprehensive accessories for mounting, connection and protection
Applications
Proxitron OKS A industrial pyrometers are suitable for measurement, control and monitoring tasks in metal and ceramic processing. They are particularly useful in applications that require both low initial temperatures and high processing temperatures to be measured.
- Temperature monitoring during heating and cooling
- Process control in industrial furnaces
- Temperature measurement during hardening and quenching and tempering
- Monitoring of brazing and welding processes
- Temperature monitoring in sintering systems
- Measurement tasks in metal processing and the steel industry
- Temperature measurement on ceramic workpieces
- Plant and furnace engineering
Configuration and analysis on a PC
The associated Windows software allows you to adapt the pyrometer to your measurement task and display, save and analyse temperature profiles.
The software provides functions including:
Emissivity adjustment
Response time adjustment
Definition of a partial measuring range
Configuration of the maximum and minimum value memory
Display, storage and analysis of measured values
The SIC 485 UD interface adapter is available to connect the RS-485 interface to a USB port on the PC.
Product selection – six versions for your measurement task
The OKS A series offers two temperature ranges, each with three optics options. Select the version that matches the expected target temperature, the size of the measuring area and the available measuring distance.
| Type | Item no. | Temperature measuring range | Optics |
| OKS 10 A08.194 S10 | 6926A | 20 to 850 °C | Close-focus optics |
| OKS 10 A10.194 S10 | 6926B | 30 to 1.000 °C | Close-focus optics |
| OKS 11 A08.194 S10 | 6926C | 20 to 850 °C | Standard optics |
| OKS 11 A10.194 S10 | 6926D | 30 to 1.000 °C | Standard optics |
| OKS 12 A08.194 S10 | 6926E | 20 to 850 °C | Long-distance optics |
| OKS 12 A10.194 S10 | 6926F | 30 to 1.000 °C | Long-distance optics |
For reliable temperature measurement, the target must completely fill the measuring spot. Spot diameters at different measuring distances can be found in the respective product data sheets.
Suitable accessories for OKS A industrial pyrometers
Proxitron accessories allow mounting, connection and protection to be adapted to the installation conditions. For elevated ambient temperatures and dirty environments, options include a cooling housing with an air purge attachment, a separate air purge attachment and protective tubes.
| Accessory | Type | Item no. |
| Fixed mounting bracket | DAK 304 | 6913D |
| Adjustable mounting bracket | DAK 305 | 6913E |
| Connection cable, 2 m | ST S10/12-2 | 9847H |
| Connection cable, 5 m | ST S10/12-5 | 9847D |
| RS-485 to USB interface adapter | SIC 485 UD | 9861E |
| Air purge attachment | DAK 303 | 6913C |
| Cooling housing with air purge attachment | DAK 302 | 6913B |
| Cable protection cap | DAK 329 | 6913X |
| Protective tube, 100 mm | DAK 319 | 6913L |
| Protective tube, 300 mm | DAK 320 | 6913M |
Which materials is the OKS A series suitable for?
The pyrometers are designed to measure the temperature of metals and ceramic materials. When selecting a device, the target’s surface and emissivity must be considered alongside the temperature range. The device’s emissivity setting can be adjusted using the software.
Which optics are suitable for my application?
The appropriate optics depend on the target size and measuring distance. Close-focus, standard and long-distance optics provide different spot sizes. For example, the close-focus optics enable a spot diameter of 1.7 mm at a distance of 95 mm. It is essential that the surface being measured completely fills the measuring spot.
What temperatures can OKS A pyrometers measure?
Depending on the version, the temperature measuring range is 20–850 °C or 30–1,000 °C. The devices therefore enable non-contact temperature measurement from room temperature up to high processing temperatures. Without additional cooling, the permissible ambient temperature of the pyrometer is 0 to +70 °C.
Which pyrometer is right for your process?
Do you need to reliably measure temperatures during heating, cooling or a thermal processing operation?
Proxitron helps you select the right pyrometer and accessories.
Tell us the material, temperature range, target size, measuring distance and ambient conditions.
We will assess your measurement task and prepare a suitable quotation.
Enquire about the right pyrometer »
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