Calex PyroMini, PyroMini 2.2 Operator's Manual

PyroMini Series

Operator’s Guide

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INTERNATIONAL OPERATOR’S GUIDE

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www.calex.co.uk/pyromini

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The PyroMini Series is a range of miniature non-contact infrared temperature sensors with
separate electronics modules.

All models have an adjustable emissivity setting and are capable of measuring a wide variety
of target materials, including food, paper, textiles, plastics, leather, tobacco, pharmaceuticals,
chemicals, rubber, coal and asphalt.

General-purpose PyroMini models measure non-reflective non-metals, or painted or coated
metals, at temperatures from -20°C to 1000°C.

PyroMini 2.2 models have a shor t measurement wavelength. They are ideal for measuring
reflective surfaces such as uncoated iron and steel, as well as many other high-temperature
applications. They are capable of measuring temperatures from 100°C to 2000°C.

The optional touch screen interface provides temperature indication, alarms, sensor
configuration and data logging to MicroSD Card. The optional high-temperature sensing head
on general-purpose models may be used in ambient temperatures of up to 180°C without
cooling. The low-noise cable on high ambient temperature models is resistant to interference
from movement, so it is ideal for mounting on moving objects such as robot arms.

A choice of optics is available to measure small or large targets at short or long distances, and
there is a choice of 4-20 mA, RS485 Modbus and alarm relay outputs.

SPECIFICATION

PyroMini PyroMini 2.2

Temperature Range See table of Model Numbers

Maximum Temperature
Span (-CRT models)

Full temperature range (up to 1550°C)

Minimum Temperature
Span (-CRT models)

100°C

Output 4 to 20 mA or RS485 Modbus

Field of View See table of Model Numbers

Accuracy ± 1°C or 1%,

whichever is greater

± 2°C or 1%,
whichever is greater

Repeatability ± 0.5°C or 0.5%, whichever is greater

Emissivity Setting Range 0.20 to 1.00 0.10 to 1.00

Emissivity Setting Method • -CB models: via two rotary switches

in electronics module

• -BB and -BT models: via RS485

• -CRT and -BT models: via touch screen

Response Time, t

90

240 ms (90% response)

Spectral Range 8 to 14 μm 2.0 to 2.6 μm

Supply Voltage 24 V DC ± 5%

Maximum Current Draw 100 mA

Maximum Loop Impedance -CB and -CRT models: 900 Ω (4 to 20 mA output)

Alarm Relays (-CRT
models)

2 x Single Pole Changeover alarm relays rated
24 V DC, 1 A, isolated 500 V DC

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MECHANICAL

Sensing head Electronics Module

Construction Stainless Steel

316

Die-cast Aluminium

Major Dimensions

Ø18 x 45 mm

98(w) x 64(h) x 36(d) mm

Mounting M16 x 1 mm

thread

Two M4 screws for wall mounting (see
diagram)

Cable Length (sensing head
to electronics module)

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

Weight with 1 m Cable 390 g (approx)

Cable Connections Removable screw terminal blocks (see Connections).

Conductor size: 28 AWG to 18 AWG

Output Cable Gland Suitable for cable diameters 3.0 to 6.5 mm

ENVIRONMENTAL

Sensing Head Electronics

Module
(without touch
screen)

Electronics
Module (with
touch screen)

Environmental Rating IP65 (NEMA 4) IP65 (NEMA 4) –

Ambient Temperature
Range

See table of
Model Numbers

0°C to 60°C 0°C to 60°C

Relative Humidity Ma ximum 95%

non-condensing

Ma ximum 95%
non-condensing

Maximum 95%
non-condensing

CE Marked Yes Ye s Ye s

RoHS Compliant Yes Ye s Ye s

The PyroMini series conforms to EMC Directive EN61326-1:2006 (Electrical equipment for
measurement, control and laboratory use – Industrial) as well as industrial standards for
electromagnetic immunity and emissions.

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MODEL NUMBERS

The following combinations of ambient temperature range, optics, measured temperature
range, output and interface are available:

Series

Sensing Head

Operating

Temperature

Range

Field of View

Temperature

Range

Output

and

Interface

PM

General Purpose

(8-14 μ m )

MA (0-60°C)

21 (2:1)

151 (15:1)

301 (30:1)

CF (close focus)

LT (-20 - 100°C)

MT (0 - 250°C)
HT (0 - 500°C)

XT (0 - 1000°C)

CB

CT (-20 - 1000°C)

CRT

BB

BRT

HA (0 -18 0 °C)

JA (0-12 0 °C)

201 (2 0:1)

LT (-20 - 100°C)

MT (0 - 250°C)
HT (0 - 500°C)

XT (0 - 1000°C)

CB

CT (-20 - 1000°C)

CRT

BB

BRT

PM 2.2

High Temperature

(2.2 μm)

(all models

0-70°C)

151 (15:1) PT (100 - 400°C)

CB

CRT

BB

BRT

251 (25:1)
751 (75:1)

CF (close focus)

MT (250 - 1000°C)
HT (450 - 2000°C)

SENSING HEAD OPERATING TEMPERATURE RANGE

-JA and -HA models withstand high ambient temperatures without cooling. They are available

with -201 (20:1) optics only.

There is no need to supply cooling air or water, and the miniature sensing head is much smaller
than bulky, cooled sensors.

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(PyroMini 2.2 - High Temperature)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

12

60

135

0.6

2.4

5.3

0 59.1 118.1

0 1500 3000

Spot Dia.

(inches)

Spot Dia.

(mm)

Spot Dia.

(inches)

Spot Dia.

(mm)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

12

100

215

0.6

3.9

8.5

0 59.1

118.1

59.1

118.1

0 1500 3000

015003000

D:S 25:1D:S 15:1

-251

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

12

20

55

0.6

0.8

2.2

0

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 75:1

-751

-151

Spot Dia.

(inches)

Spot Dia.

(mm)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

12

7.5
30

0.6

0.3

1.2

019.

73

9.4

0500 1000

-CF

(PyroMini - General Purpose)

FIELD OF VIEW

11.9

0

Spot Dia.

(inches)

Spot Dia.

(mm)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

61.9

111.9

0.5

2.4

4.4

048

100200

D:S 2:1

-21

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

45.2

78.6

0.5

1.8

3.1

019.

73

9.4

0500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 15:1

-151

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

36.9

61.9

0.5

1.5

2.5

019.739.4

0500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 20:1

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

28.6

45.2

0.5

1.1

1.8

019.

73

9.4

0500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 30:1

Spot Dia.

(inches)

Spot Dia.

(mm)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

0.5

0

0

5.0

0.20

100

3.9

12.5

0.49

200

7.9

-CF

Diameter of target spot measured
versus distance from sensing
head at 90% energy. Sensors may
be used at longer distances than
these diagrams show. There is no
maximum measurement distance
in clean air.

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MEASUREMENT TEMPERATURE RANGE (°C)

-20

-LT

-MT

-HT

-XT

-CT

0 100

Fixed (e.g. -MT: 0°C @ 4 mA, 250°C @ 20 mA)

-CRT models: 4 to 20 mA output configurable within this range

-BRT and -BB models: Digital output, full temperature range

250 500 1000

OUTPUT AND INTERFACE

-CB 4 to 20 mA output, no touch screen

-CRT 4 to 20 mA output and two alarm relay outputs, with touch screen

-BB RS485 Modbus output, no touch screen

-BRT RS485 Modbus output and two alarm relay outputs, with touch screen

EXAMPLE: PM-MA-301-CT-BRT

Series

Sensing Head

Operating

Temperature

Optics

Temperature

Range

Output and

Interface

PM

PyroMini

-MA 0°C to 60°C -301 3 0:1
divergent

-CT configurable
within the limits: -20
to 1000 °C

-BRT RS485
Modbus output
and two alarm relay
outputs, with touch
screen

(PyroMini - General Purpose)

(PyroMini 2.2 - High Temperature)

100

-PT

-MT

-HT

250 400

-CB models: Fixed 4 to 20mA output scale (e.g. -MT: 250

o

C @ 4mA,1000oC @ 20 mA)

-CRT models: 4 to 20 mA output configurable within this range

-BRT and -BB models: Digital output, full temperature range

450 1000 2000

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EMISSIVITY ADJUSTMENT (-CB MODELS)

The emissivity setting on -CB models may be adjusted via two rotary switches inside the electronics
box. To adjust the emissivity setting:

Set the left switch to the first digit after the decimal point (0.1).
Set the right switch to the second digit after the decimal point (0.01).

To enter an emissivity setting of 1.00, set both switches to 0.

If the selected emissivity setting is lower than the minimum, the sensor will default to an emissivity
setting of 0.95.

For example:

Left switch Right switch Emissivity setting

6 3 0.63

0 0 1.00

TOUCH SCREEN (-CRT AND -BRT MODELS)

The optional backlit touch screen interface mounted in the lid of the electronics module provides
a large, bright display of the measured temperature, as well as options for full configuration of
the sensor. The graph view shows the history of the measured temperature.

In alarm conditions, the display changes colour to provide an immediate and obvious alarm
indication. Alarm modes and levels can be configured via the touch screen.

TOUCH SCREEN SPECIFICATIONS

Touch Screen
Display Format

2.83” (72 mm) resistive touch TFT, 320 x 240 pixels, backlit

Configurable
Parameters

Temperature range, temperature units, emissivity setting, reflect­ed energy compensation, alarms, signal processing, Modbus
address (-BRT models), date and time, data logging

Temperature Units °C or °F configurable

Temperature
Resolution

0.1°

Alarm Configuration Two alarms with adjustable level, individually configurable as HI

or LO. Alarm 2 can be set to target temperature or sensing head
internal temperature

Signal Processing Average, peak hold, valley hold, minimum, maximum

EXAMPLE: PM2.2-251-MT-BRT

Series

Sensing Head

Operating

Temperature

Measurement

Temperature

Range Optics

Output and

Interface

PM2.2

PyroMini 2.2

251

25:1 divergent opticsMT250°C to 1000°C

-BRT RS485
Modbus output
and two alarm relay
outputs, with touch
screen