CellaTemp® PA 21 is a digital pyrometer featuring fibre optics to measure temperatures ranging from 300 to 2000 °C. The sensor head is housed separately from the electronics assembly. Both the sensor head and the fibre optic cable are unsusceptible to electromagnetic radiation. The optical sensor head can withstand ambient temperatures up to 250 °C without cooling. This variant is ideal for cramped, hard-to-access locations.
Caution: The fibre optic cable must be ordered separately
Features:
- Range: 300 to 2000 °C
- Digital input / output
- Focusable, interchangeable optics allow for precise distance adjustment
- Precision lenses with broadband antireflection coating
- LED display is easy to read from a distance
- Test current can be applied to perform diagnostics
- Sensor head and fibre optic cable withstand ambient temperatures up to 250 °C
| type | Measuring range | Lens | Focus area | Distance ratio |
|---|---|---|---|---|
| 300 – 2000 °C | PA 41.01 | 0.2 m – ∞ | 180 : 1 | |
| PA 41.05 | 0.12 m – ∞ | 100 : 1 | ||
| PZ 41.18 | 0.033 – 0.045 m | 50 : 1 | ||
| 450 – 2500 °C | PA 41.02 | 0.5 m – ∞ | 320 : 1 |
| Measurement parameters | |
|---|---|
| Measuring range | 300 – 2500 °C in several segments |
| Sensor | Photo diode |
| Spectral range | 1.1 – 1.7 µm |
| Response time t98 | Measuring range 300 – 2000 °C: ≤ 50 ms (T > 300 °C) ≤ 2 ms (T > 800 °C) Measuring range 450 – 2500 °C: |
| Measurement uncertainty | 0.75 % of temp. reading [°C], min. 4 K |
| Repeatability | 2 K |
| Temperature coefficient | 0.25 K/K (T < 500 °C) 0.05 %/K (T > 500 °C) |
| Resolution current output | 0.2 K + 0.03 % of selected range |
| Resolution interface | 0.1 K |
| Resolution display | 1 K |
| Optical variants | |
| Measuring heads | Measuring range 300 – 2000 °C: PA 41.01 (M30): Focusing 0.2 m – ∞ PA 41.05 (M16): Focusing 0.12 m – ∞ PZ 41.18 (M16): focusing 0.033 – 0.045 m Measuring range 450 – 2500 °C: |
| Electrical parameters | |
| Analog output | 0(4) – 20 mA linear, switchable, scalable |
| Resistance | ≤ 500 Ω |
| Analog input | 0 – 10 V |
| Switching output | 2 x Open Collector 24 V DC, ≤ 30 mA |
| Switching input | 2 x to 24 V |
| Interface | USB, RS 485 |
| Power supply | 24 V DC +10 % / -20 % |
| Current consumption | ≤ 175 mA bei 24 V DC |
| Features | |
| Sighting option | Laser pilot light |
| Display | 4-digit LED display red, digit-height 8 mm |
| Status display | 2 x LED |
| Control elements | 3 buttons |
| General parameters | |
| Connection | M12 thread 8-pin connection |
| Ambient temperature | Electronic: 0 – 65 °C Measuring head: 250 °C |
| Storage temperature | -20 – +80 °C |
| Permissible humidity | 95 % r.H. max. (non-condensing) |
| Dimension | Electronic: Ø 65 mm x 187 mm Measuring head: depending on the type |
| Housing | Stainless steel V2A (1.4305) |
| Protection class | IP 65 acc. to DIN 40050 |
| Weight | approx. 0.9 kg |
| Adjustable parameters | |
| Parameters | Measuring range Measured variable and scale of analog input and output signals Smoothing filter Memory operation mode Hold time of the memory Emissivity Transmittance Compensation of the reflected ambient radiation Limits and operating mode of the alarm contacts Parameters of the ATD function (optinal) Linearization function Status display of the LEDs Simulation of current and temperature Temperature unit °C/°F |
| Functions | |
| Overtemperature signal | if the internal temperature exceeds 80 °C the analog output shows a value > 20.5 mA |
| Service function | Simulation of a measured value or a current signal |
| Scope of delivery | |
| Pyrometer CellaTemp PA Connection cable VK 02/A (5 m) Measuring head USB cable VK 11/D (1.8 m) Software CellaView Manual (short) * The fibre optic cable must be ordered separately. |
|
| Software | |
| CellaView | |
- molten glass
- crystal growing
- metals
- brazing
- forging