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Pyrometer CellaTemp PA 21

Article description

The CellaTemp® PA 21 is a digital pyrometer with fibre optic cable for measuring temperatures between 300 and 2,000 °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 300 to 2
  • 000 °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/RS485 interface -- measuring head and fibre optic cable heat resistant up to 250 °C
Pyrometer CellaTemp PA 21
Properties
Version
Measuring range
300 - 2000 °C
Focal range
0,033 - 0,045 m
Laser pilot light
Your selection will impact other settings.
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Version CellaTemp PA 21 AF 11 
Version CellaTemp PA 21 AF 21 
Version CellaTemp PA 21 AF 22 
Version CellaTemp PA 21 AF 901 
Measuring range 300 - 2000 °C 
Measuring range 300 - 2000 °C 
Measuring range 300 - 2000 °C 
Measuring range 450 - 2500 °C 
Focal range 0,2 m - ∞ 
Focal range 0,12 m - ∞ 
Focal range 0,033 - 0,045 m 
Focal range 0,5 m - ∞ 
Shape of the measuring field round 
Distance ratio 180 : 1 
Distance ratio 100 : 1 
Distance ratio 50 : 1 
Distance ratio 320 : 1 
Measuring head PA 41.01 
Measuring head PA 41.05 
Measuring head PZ 41.18 
Measuring head PA 41.02 
Measuring principle one-color 
Sighting option Laser pilot light 

Technical Data Downloads Measurement field calculator Accessories Emissivity calculator Application request

Pyrometer CellaTemp PA 21

Technical Data

Measurement parameters

Measuring range 300 - 2,500 °C in sub-ranges
Sensor Photodiode
Spectral range 1.1 - 1.7 µm
Response time t98 Measuring range 300 - 2,000 °C:
≤ 50 ms (T > 300 °C)
≤ 2 ms (T > 800 °C)

Measuring range 450 - 2,500 °C:
≤ 50 ms (T > 450 °C)
≤ 2 ms (T > 900 °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 measuring span
Resolution interface 0.1 K
Resolution display 1 K

Optical variants

Measuring heads Measuring range 300 - 2,000 °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 - 2,500 °C:
PA 41.02 (M16): Fokussierung 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 at 24 V DC

Equipment

Sighting option Laser pilot light
Display 4 x 7 segments LED red, digit height 8 mm
Status display 2 x LED
Operator controls 3 pushbuttons

General parameters

Connection M12 screw connection 8-pin
Ambient temperature Electronics: 0 - 65 °C
Measuring head: 250 °C
Storage temperature -20 - +80 °C
Permissible air humidity 95 % RH max. (non-condensing)
Dimension Electronics: Ø 65 mm x 187 mm
Measuring head: depending on the type
Housing material Stainless steel V2A (1.4305)
Type of protection IP 65 acc. to DIN 40050
Weight approx. 0.9 kg

Adjustable parameters

Parameters Measuring range
Measured variable and scaling of analogue input and output signals
Smoothing filter
Memory operation mode
Holding time of the memory
Emissivity
Transmittance
Compensation of background radiation
Limit values 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 analog output shows a value > 20.5 mA
Service function Simulation of a measured value or a current signal

Scope of delivery

Scope of delivery Pyrometer CellaTemp PA
Connection cable VK 02/A (5 m)
Measuring head
USB cable VK 11/D (1.8 m)
CellaView software
Operating manual (short)
* The fibre optic cable must be ordered separately.

Software

Software CellaView

Pyrometer CellaTemp PA 21

Emissivity calculator

The correct emissivity to be set on the pyrometer is calculated from the measured value displayed on the pyrometer, the true object temperature, the emissivity preset at the pyrometer and the ambient temperature (required for some instrument types).
The value displayed by the pyrometer is calculated from the true object temperature, the emissivity of the measurement object, the emissivity set on the pyrometer and the ambient temperature (required for some instrument types).
Pyrometer
Quotient
  • Two-color mode
  • One-color 1
  • One-color 2
Preset emissivity
Emissivity ratio to be set
Ambient temperature
Object temperature
Value measured by the pyrometer
Pyrometer
Quotient
  • Two-color mode
  • One-color 1
  • One-color 2
Preset emissivity
Value measured by the pyrometer
Ambient temperature
Object temperature
Emissivity ratio to be set

Pyrometer CellaTemp PA 21

Downloads

Brochure CellaTemp PA
us
Brochure CellaView
us
Manual CellaTemp PA 21 31 36
us
Declaration of conformity Declaration of Conformity PAxx
us
UKCA Declaration of Conformity PAxx
us
EAC Deklaration PK-PA-PT
us

Pyrometer CellaTemp PA 21

Accessories

Pyrometer CellaTemp PA 21

IO-Link IODD

Pyrometer CellaTemp PA 21

IO-Link Manufacturer declaration

Pyrometer CellaTemp PA 21

Measurement field calculator

Pyrometer
  • PA 21 AF 11 (0,2 m - ∞)
  • PA 21 AF 21 (0,12 m - ∞)
  • PA 21 AF 22 (0,033 - 0,045 m)
  • PA 21 AF 901 (0,5 m - ∞)
PA 21 AF 11 (0,2 m - ∞)
Focal range
mm
Length of the graph
mm
Measuring distance (mm)0816243240485664728088961041121201281361441521601681761841922001.11 mm
Measuring distanceMeasuring field diameter
0.00 mm21.50 mm
8.00 mm20.68 mm
16.00 mm19.87 mm
24.00 mm19.05 mm
32.00 mm18.24 mm
40.00 mm17.42 mm
48.00 mm16.61 mm
56.00 mm15.79 mm
64.00 mm14.98 mm
72.00 mm14.16 mm
80.00 mm13.34 mm
88.00 mm12.53 mm
96.00 mm11.71 mm
104.00 mm10.90 mm
112.00 mm10.08 mm
120.00 mm9.27 mm
128.00 mm8.45 mm
136.00 mm7.64 mm
144.00 mm6.82 mm
152.00 mm6.00 mm
160.00 mm5.19 mm
168.00 mm4.37 mm
176.00 mm3.56 mm
184.00 mm2.74 mm
192.00 mm1.93 mm
200.00 mm1.11 mm
Pyrometer LLC – Pyrometer Instrument Company

Attn: Service Department
70 Weber Avenue
Ewing, NJ 08638 USA
Telephone: 609-443-5522

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