PyroUSB
USB Configurable Infrared Temperature Sensors
with 4-20 mA Output

CONNECTIONSThe sensor will operate with either the 4 to 20 mA cable connected, the USB cableconnected, or both.

•Temperature ranges from -40°C to 2000°C•

2-wire 4-20 mA output•Fully configurable via USB using Modbus
protocol. Cable and software included•

Specialised models for measuring metals, hightemperature objects or glass surfaces•

General-purpose models for most otherapplications•Peak and valley hold mode allows easymeasurement of objects on conveyors•

Stainless steel housing, sealed to IP65

•Quick and easy installation

The PyroUSB Series measures temperatures from -40°C
to 2000°C accurately and consistently, with an outstanding
response time of 200 ms. The 4 to 20 mA output iscompatible with almost any indicator, controller, recorder ordata logger. without the need for special interfacing or signal
conditioning.
A choice of measurement wavelengths is available to suit arange of applications.

Power Supply
Red + -+BlackPower Supply
Red + -+Black

Display/Controller

Display/Controller

USBPC

General-purpose PUA8 (8-14 µm) models can measurefrom -40°C to 1000°C. They are suitable for measuringhigh-emissivity materials such as paper, thick plastics,
food, pharmaceuticals, rubber, asphalt and painted
surfaces. These models are capable of measuring very low
temperatures, so they are ideal for sub-zero measurementsin the food, logistics and storage industries.
Short-wavelength PUA2 (2.2 µm) models have a choiceof temperature ranges from 45°C to 2000°C. They provide
a more accurate reading when measuring low-emissivity
materials such as many reflective metals. They are also
capable of measuring through glass viewports.
Glass PUA5 (5 µm) models can measure from 200°C to1650°C. They are filtered at a wavelength where glass isleast reflective, making them an ideal pyrometer for glass
surface temperature measurement.
All models have USB communications. A USB cable andWindows software is included. All data is transmitted via
Modbus, so it is also easy to configure and read temperaturesfrom the sensor using third-party software.

N/CUSBPC

Note: The sensor must be grounded at only one point, either the cable shield or the sensor housing.

The USB cable has an IP65 connector at the sensor end.
An IP65 cap protects the sensor when the USB cable is notconnected.

SOFTWARE

It is simple, touch-friendly software, compatible with versions of Windows fromVista onwards and supplied with each sensor.
Alternatively, the sensor’s Modbus protocol allows it to be used with other
Modbus software.

FEATURES

Temperature display
Scrolling temperature chart
Data logging to comma-separated text file, compatible with Excel
Sensor configuration:
Emissivity setting
Averaging
Peak/valley hold processing
Reflected energy compensation
4-20 mA output temperature scale

DIMENSIONS

228

Mounting nut(included)

Thread: M20 x 1 mm

4-20 mA output cable
1 metre(as standard)

USB cable socket

1552
27.6

61

OPTICS Diameter of target spot measured versus distance from sensing head (90% energy)
Optics (PUA2 and PUA5)

Optics (PUA8)

5.3
118.1
5.3

0.6

2.4D:S
D:S25:1
25:1 5.3

151560 D:S 25:1 13560
135

1515

0.6
00.6

251to object (mm)Distance: Sensor
251

59.1
00Distance: Sensor59.1
118.1
118.1
toobject (inches)
8.5
8.5
00.6
59.1
3.93.9118.1
0.6
8.5
3.9 D:S 15:10.6
D:S 15:1

D:S 15:1
100
100
215
215
15
1500
3000
10000
1500
3000
215
Distance:Sensor
Sensor1500
object(mm)(mm)
totoobject
0 Distance:
3000
151 to object (mm)Distance: Sensor
151

0.2
55

0.6
15
15
15
200
200

0 Distance:
200
Distance:Sensor
Sensor100
object(mm)(mm)
totoobject
CF
Distance: SensorCF
to object (mm)CF

Distance:Sensor
Sensortotoobject
object(inches)(inches)
Distance:
59.1
118.1
00Distance: Sensor 59.1
118.1
toobject (inches)
59.1
2.2
0118.12.2
0.8
0.8
0.60.6
2.2
0.8D:S
D:S75:1
75:1
0.6

Distance:Sensor
Sensortotoobject
object(inches)(inches)
Distance:
19.7
39.4
00Distance: Sensor19.7
39.4
toobject (inches)
019.7
39.4
0.6
0.6
1.2
1.2
0.3
0.3
0.6
1.2
0.3
7.5
7.5
30
30
1515
7.5
30
0500
1000015500
1000
Distance:Sensor
Sensor500
object(mm)(mm)
totoobject
0 Distance:
1000

1515

1515

7.9
0.6
0.6

301

SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)

OpticsDistance:(PUA2)
Distance:Sensor
Sensortotoobject
object(inches)(inches)

3.90.20.2

5100
1000015

301
Distance: Sensor
to object (mm)
301

251

0.615
15

D:S 30:13248
3248050010000155001000
32480 Distance:
1000
Distance:Sensor
Sensor500
object(mm)(mm)
totoobject

1560
1500
3000
13500
1500
3000
Distance:
Sensorobject(mm)(mm)
Distance:
Sensortotoobject
01500
3000

SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)

SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)

59.1
2.4
2.4

3.9object (inches)
7.900Distance: Sensor3.9
7.9
to

19.7
39.4
00Distance: Sensor19.7
39.4
toobject (inches)
1.2
1.9
1.2
1.9
0
19.7
39.4
0.6
0.6
1.2
1.9
D:S30:1
30:1
0.6
D:S

SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)00.6
0.6

Distance:Sensor
Sensortotoobject
object(inches)(inches)
Distance:

Distance:SensorSensortotoobject
object(inches)(inches)
Distance:
SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)

SpotSpot
Dia. Dia.
Dia. Dia.
Spot
Dia. SpotSpot
Spot
Dia.
(inches)(mm)(mm)(inches)(mm)(inches)

Distance:Sensor
Sensortotoobject
object(inches)(inches)
Distance:
59.1
00Distance: Sensor59.1
118.1
118.1
toobject (inches)

20 D:S 75:1 55
2055
152055
1500
3000
00
1500
3000
Distance: Sensortotoobject
object(mm)(mm)
0 Distance: Sensor 1500
3000
751to object (mm)Distance: Sensor
751

CF to object (mm)Distance: Sensor
CFCF751

151

GENERAL SPECIFICATIONS
ModelPUA2

PUA5PUA8

Spectral Response

2.2 µm5 µm

8 to 14 µm

Application

Ferrous metals and high-temperaturetargets

Glass

General purpose

Temperature range

Choice of ranges from 45°C to 2000°C

200°C to 1650°C-40°C to 1000°C

Response time

200 ms2-wire, 4-20 mA, linear with measured temperature

OutputUSB 2.0 (removable USB cable and software included) using the Modbus protocol

Communications

Choice of divergent or focused optics for small or large targets at short or long distances (see Optics)

Optics
Accuracy± 2°C or 1% of reading, whichever isgreater± 1°C or 1% of reading, whichever is greater± 0.5°C or 0.5% of reading, whichever is greater

Repeatability

0.1 to 1.0

Emissivity Setting
Maximum Span (4-20 mA output)

Full temperature range

Minimum Span (4-20 mA output)

100°C

ELECTRICAL
Supply Voltage

24 V DC (28 V DC max)Sensor Voltage (minimum)

6 V DC

Maximum Loop Impedance

900 Ω @ 24 V DC

MECHANICALMINIMUM MEASURABLETEMPERATURE(PUA2-151-LT ONLY)160
140

Construction

Stainless SteelDimensions

Ø 27.6 x length 61 mm including cable glands

Thread mounting

M20 x 1 mm pitch, length 15 mm

4-20 mA Output Cable Length

1 m (standard), up to 30 m (optional)

60

Weight with 1 m Output Cable

155 g40

USB Cable Length

1.8 m

ENVIRONMENTAL
Environmental Rating

IP65

Ambient (Operating) Temperature

0°C to 70°C (cooled models are available for higher temperatures)

Relative Humidity

95% max. non-condensing

TS = 70°C

Tmin (°C)

120
100TS = 50°C

800.1

TS = 25°C0.20.3

0.4

0.5

0.6

ε0.70.80.9

1.0Graph showing the minimum measurable object
temperature (Tmin), determined by surface emissivity(ε) and sensor temperature (TS).

MODEL NUMBERSACCESSORIES

Short
Wavelength

PUA2251

MT

WJ

Glass

PUA5251

GHT

WJ

GeneralPurpose

PUA8301

Laser Sighting Tool LSTL

WJ

Cooling(blank) Sensor without cooling
WJ
Air/water cooled jacket
with air purge collar

Temperature range
PUA2
LT

100°C to 400°C(151 models only)

MTHT

250°C to 1000°C
450°C to 2000°C

GHT

Field of view

251751CFPUA5251

Air/water cooled
housing WJ

Air purge APL

200°C to 1650°C

PUA8(blank) All models:-40°C to 1000°C

PUA2
151bracket ABL

45°C to 300°C(151 models only)

PT

PUA5

Adjustable mounting

15:1 divergent optics (LT & PT models only)

Dual lasersighting bracket
DLSBFL/DLSBAL

25:1 divergent optics
75:1 divergent optics
Close-focus optics (focal spot size
7.5 mm at 500mm distance)

Protective Window PWL

25:1 divergent optics

PUA8301CF

30:1 divergent optics
Close-focus optics (focal spot size
5 mm at 100mm distance)Spectral response
PUA2

2.2 µm, for measuring reflective metals
and high-temperature objects

PUA55 µm, for measuring glass surface temperature

PUA8

8 to 14 µm, general-purpose,
for most other applications

ACCESSORIES ALSO AVAILABLE
Fixed mounting bracket FBL
Extended analogue output cable (30 m max):- for PyroUSB models without cooling PUACE- for PyroUSB WJ models PUACEHT
3-point calibration certificate CALCERTA