Fiber optic pyrometer CellaTemp® PA 31

with LED displayRS485USB

Article description
The CellaTemp® PA 31 is a digital pyrometer with a fibre optic cable for measuring temperatures between 550 and 2,500 °C. The pyrometer is equipped with a separate optical measuring head and a fibre optic cable. The fibre optic cable and measuring head are insensitive to interference from electromagnetic radiation and can be used in ambient temperatures up to 250 °C without cooling. The variant with separate optical measuring head has advantages especially in confined spaces.

Special features

• Measuring range 550 to 2,500 °C
• Focusable interchangeable lenses for exact adjustment of the measuring distance
• Broadband anti-reflective precision lenses
• Short measuring wavelengths
• LED display can be read from a great distance
• Test current output for the diagnostic function
• Standard feature: analogue output and USB/RS 485 interface
• Measuring head and fibre optic cable heat resistant up to 250 °C

Versions / Variants
CellaTemp PA 31 AF 11
CellaTemp PA 31 AF 21
CellaTemp PA 31 AF 22
CellaTemp PA 31 AF 901

Measuring ranges by variant
AF 22: 550 - 2500 °C
AF 901: 700 - 3000 °C

Focus distance by variant
AF 11: 0,2 m - ∞
AF 21: 0,12 m - ∞
AF 22: 0,033 - 0,045 m
AF 901: 0,5 m - ∞

Measuring field shape
round

Distance ratio by variant
AF 11: 190 : 1
AF 21: 100 : 1
AF 22: 50 : 1
AF 901: 340 : 1

Measuring head (examples)
AF 11 → Measuring head PA 41.01
AF 21 → Measuring head PA 41.05
AF 22 → Measuring head PZ 41.18
AF 901 → Measuring head PA 41.02

Technical Data — Measurement parameters
Measuring range: 550 - 3000 °C in several segments
Sensor: Photo diode
Spectral range: 0.78 - 1.06 µm
Response time t98: Measuring range 550 - 2500 °C: ≤ 50 ms (T > 600 °C) and ≤ 2 ms (T > 800 °C). Measuring range 700 - 3000 °C: ≤ 50 ms (T > 750 °C) and ≤ 2 ms (T > 950 °C).
Measurement uncertainty: 0.75 % of temp. reading [°C]
Repeatability: 2 K
Temperature coefficient: 0.05 %/K
Resolution current output: 0.2 K + 0.03 % of selected range
Resolution interface: 0.1 K
Resolution display: 1 K

Optical variants
Measuring heads (550 - 2500 °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 head (700 - 3000 °C): PA 41.02 (M16): focusing 0.5 m - ∞.

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
Interface: RS 485
Power supply: 24 V DC +10 % / -20 %
Current consumption: ≤ 175 mA for 24 V DC
Connection: M12 thread 8-pin connection

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
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

• Measuring range
• Measured variable and scale of analogue 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 (optional)
• 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 analogue 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

Measuring field examples (Measuring distance — Measuring field diameter)
0.00 mm — 21.50 mm
8.00 mm — 20.68 mm
16.00 mm — 19.86 mm
24.00 mm — 19.05 mm
32.00 mm — 18.23 mm
40.00 mm — 17.41 mm
48.00 mm — 16.59 mm
56.00 mm — 15.77 mm
64.00 mm — 14.96 mm
72.00 mm — 14.14 mm
80.00 mm — 13.32 mm
88.00 mm — 12.50 mm
96.00 mm — 11.69 mm
104.00 mm — 10.87 mm
112.00 mm — 10.05 mm
120.00 mm — 9.23 mm
128.00 mm — 8.41 mm
136.00 mm — 7.60 mm
144.00 mm — 6.78 mm
152.00 mm — 5.96 mm
160.00 mm — 5.14 mm
168.00 mm — 4.32 mm
176.00 mm — 3.51 mm
184.00 mm — 2.69 mm
192.00 mm — 1.87 mm

Caractéristiques / spécifications techniques

• Model: CellaTemp® PA 31
• Measuring range: 550 - 3000 °C (depending on segment/version)
• Spectral range: 0.78 - 1.06 µm
• Measurement uncertainty: 0.75 % of temperature reading
• Response time: ≤ 50 ms or ≤ 2 ms depending on temperature and range
• Outputs/interfaces: 0(4)-20 mA, USB, RS 485, relay inputs/outputs
• Power supply: 24 V DC (+10 % / -20 %)
• Ambient temperature (electronics): 0 - 65 °C; measuring head up to 250 °C
• Housing: Stainless steel V2A (1.4305); Protection class IP65
• Display: 4-digit red LED (8 mm)
• Weight: approx. 0.9 kg
• Scope of delivery: pyrometer, connection cable, measuring head, USB cable, software and short manual (fibre optic cable ordered separately)