Omega OS-MINI SERIES User manual

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OS-MINI SERIES

Miniature Non-Contact Infrared

Temperature Sensors With

Separate Electronics Modules

e-mail: [email protected]

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User’s Guide

MADE IN UNITED KINGDOM

Servicing North America:

U.S.A.:

Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

Stamford, CT 06907-0047 USA

Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)

Engineering Service: 1-800-872-9436 (USA & Canada only)

Tel: (203) 359-1660 Fax: (203) 359-7700

e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

omega.com [email protected]

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains,

and reserves the right to alter specifications without notice.

WARNING: These products are not designed for use in, and should not be used for, human applications.

›

The OS-Mini 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.

The optional touch screen interface provides temperature indication, alarms, sensor

configuration and data logging to MicroSD Card. The optional high-temperature

sensing head 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 are 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

GENERAL

Temperature Range See table of Model Numbers

Maximum Temperature Span (-CRT models) 1020°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

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

Emissivity Setting Range 0.20 to 1.00

Emissivity Setting Method MA models: via two rotary switches in electronics

module

C4 models: via RS485

MA-R-D & CR-R-D models: via touch screen

Response Time, t90 240 ms (90% response)

Spectral Range 8 to 14 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

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 cablediameters 3.0 to 6.5mm

›

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 Maximum 95%

non-condensing

Maximum 95%

non-condensing

Maximum 95%

non-condensing

CE Marked Yes Yes Yes

RoHS Compliant Yes Yes Yes

ELECTROMAGNETIC COMPATIBILITY STANDARDS:

Class Standard Description

EMC Directive EN61326-1:2006 Electrical equipment for measurement,

control and laboratory use – Industrial

- Immunity IEC 61000-4-2 Electrostatic Discharge Immunity

IEC 61000-4-3 Electromagnetic Field Immunity

IEC 61000-4-4 Burst Immunity

IEC 61000-4-5 Surge Immunity

IEC 61000-4-6 Conducted RF Immunity

- Emissions EN 55022A RF Emissions Class A

EN 55022B RF Emissions Class B

MODEL NUMBERS

The following combinations of ambient temperature range, optics, measured temperature range,

output and interface are available on OS-MINI sensors:

Series

Sensing Head

Operating

Temperature Range

Field of View

Measurement

Temperature

Range

Output and

Interface

OS-MINI

212

152

302

802

MA-R-D

C4-R-D

HA 201

XT MA

MA-R-D

C4-R-D

›

-20

-LT

-MT

-HT

-XT

-CT

0 100

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

MA-R-D models: 4 to 20 mA output configurable within this range

C4-R-D models: Digital output, full temperature range

250 500 1000

MEASUREMENT TEMPERATURE RANGE (°C)

OUTPUT AND INTERFACE

MA 4 to 20 mA output, no touch screen

MA-R-D 4 to 20 mA output and two alarm relay outputs, with touch screen

C4 RS485 Modbus output,no touch screen

C4-R-D RS485 Modbus output and two alarm relay outputs, with touch screen

Diameter of target

spot measured versus

distance from sensing

head at 90% energy

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

45.2

78.6

0.5 1.8

3.1

0 19.7 39.4

11.9

0500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

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

0 4 8

100 200

D:S 15:1D:S 2:1

212 152

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

36.9 61.9

0.5

1.5 2.5

0 19.7 39.4

0 500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 20:1

201

Spot Dia.

(inches)

Spot Dia.

(mm)

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

0.5

5.0

0.20

100

3.9

12.5

0.49

200

7.9

802

Distance: Sensor to object (inches)

Distance: Sensor to object (mm)

11.9

28.6 45.2

0.5

1.1 1.8

0 19.7 39.4

0 500 1000

Spot Dia.

(inches)

Spot Dia.

(mm)

D:S 30:1

302

FIELD OF VIEW

SENSING HEAD OPERATING TEMPERATURE RANGE

-MA 0°C to 60°C

-HA 0°C to 180°C

The high ambient temperature sensing head on -HA models is capable of withstanding

temperatures of up to 180°C without cooling. It is available with 20:1optics.

There is noneed to supplycoolingair orwater, and the miniature sensing head is much smaller than

bulky, cooled sensors.

›

EXAMPLE: OS-MINI 302-CT-C4-R-D

SeriesSensing Head

Operating

Temperature

Optics Temperature

Range

Output and

Interface

OS-MINI -MA0°C to 60°C-302 30:1

divergent

-CT

within the limits:

-20 to 1000 °C

C4-R-D

BRT

RS485

Modbus output and two

alarm relay outputs, with

touch screen

EMISSIVITY ADJUSTMENT (-CB MODELS)

The emissivity setting on OS-MINI with MA output 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.

The minimum emissivity setting is 0.2. If a lower emissivity setting is selected, 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 (MA-R-D and C4-R-D 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

Temperature range, temperature units, emissivity setting,

Modbus address (-BRT models), date and time, data logging

Temperature Units

Temperature Resolution 0.1°

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

›

USER INTERFACE

Default View Temperature View

Displays a large indication of the measured temperature. The background

turns bright red when an alarm is activated.

Setting

Temperature

Units

Selecting

Displayed

Temperature

Press “°C” to switch to °F and vice versa. The units are changed throughout

the interface.

Press the temperature display to select which reading is shown:

Filtered Temp

The measured temperature, with averaging and hold processing. This

temperature is output by the sensor on the 4 to 20 mA output (-CB and -CRT

models).

Average Temp

The measured temperature with averaging but without hold processing.

Unltered Temp

The unprocessed measured temperature.

MicroSD Card status.

This icon is displayed when an SD card is inserted, and ashes when data

logging is in progress.

This icon is displayed when scheduled data logging is enabled and has yet

to begin.

List View

Displays a list of the measured temperatures, alarm state and data logging

state.

Filtered Temp: The measured temperature, with averaging and hold

processing.

Unltered Temp: The unprocessed measured temperature.

Average Temp: The Unltered Temperature averaged over the period

specied in “Output Processing”.

Maximum Temp: The highest temperature measured during the hold period,

with averaging.

Minimum Temp: The lowest temperature measured during the hold period,

with averaging.

Sensor Temp: The internal temperature of the sensing head.

Reected Temp: The reected energy compensation temperature, as

specied in “Emissivity and Compensation”.

›

Lock/Unlock

Prevents settings being changed via a four-digit numerical code.

Change Password

Enter, conrm and save a new four-digit code.

Start/Stop Logging

Manually begins or ends data logging (requires MicroSD Card, available

separately).

If Scheduled Start is enabled in Settings > Data Logging, then logging cannot

be started manually.

To manually start logging, you must rst disable Scheduled Start.

Graph

Displays the recent history of the Filtered Temperature and the Sensor

Temperature. To scroll backwards and forwards in time, touch the graph and

drag it. The graph stores the most recent 24 hours of temperature data.

Reset Graph

Clears and restarts the graph.

Real-Time Scrolling View

Returns the graph to the real-time scrolling view, showing the most recent

measurements.

Acknowledge Alarms

Switches the relay outputs for triggered alarms to their normal, untriggered

state. The background of the Temperature View, List View and Graph View

will stay red, and the alarms will not be triggered again, until the alarms are

reset (see “Alarms” below). Alarms can be acknowledged when the display

is locked.

Settings

Access the conguration parameters. Press Apply to save the settings,

or Exit to leave the screen without saving.

›

SETTINGS

Date & Time

Change the date and time for data logging purposes. The clock is reset when

the power is cycled unless a battery is tted.

Output Processing

Averaging

Period

Hold Mode

Hold Period

Set the time, in seconds, over which the measured temperature is averaged.

Note: averaging prevents the sensor from following rapid temperature

changes. Minimum: 0 (no averaging). Maximum: 60.

Peak

The sensor holds the maximum temperature steady for the Hold Period.

After this, the sensor responds normally. If the sensor detects a higher

temperature, it holds this temperature steady for the Hold Period.

Valley

Similar to Peak Hold mode except that the sensor outputs the minimum

detected temperature steady for the Hold Period.

Off

Disables hold processing.

Set the time, in seconds, for the sensor to hold the temperature as above.

Minimum: 0 (no hold processing). Maximum: 1200.

Data Logging

Sample

Period

Number of

Samples

Enable

Scheduled

Start

Date and

Time

The time, in seconds, between samples. Minimum: 1. Maximum: 86,400

(1 day).

The number of samples to collect before logging stops. Minimum: 0

(continuous logging). Maximum: 86,400 (1 day of data if Sample Period = 1

second).

The sensor begins logging at the Date and Time specied. Logging can also

be started and stopped manually.

The date and time for scheduled logging to start.

›

Emissivity and Compensation

Emissivity

Setting

Enable

Energy

Compensation

Temperature

Enter the emissivity of the target. Target emissivity can be determined

experimentally, or estimated using an emissivity table. For more information,

contact Calex. Minimum: 0.2. Maximum: 1.0.

colder objects.

Compensation. Minimum: -20°C. Maximum: 1000°C.

4 to 20 mA Output (MA-R-D models)

Set the temperature range limits for the 4 to 20 mA output.

Temperature

at 4 mA

Temperature

at 20 mA

Please note

The lower temperature range limit. Minimum: -20°C. Maximum: 900°C.

The upper temperature range limit. Minimum: 80°C. Maximum: 1000°C.

The difference between the temperatures at 4 mA and at 20 mA must be at

least 100°C. The temperature at 20 mA must be greater than the temperature

at 4 mA.

Modbus Address (C4-R-D models)

Modbus

Address

The current Modbus address of the sensor is displayed. Enter a new address,

then press Apply to save it to the sensor. Cycle the power to use the new

address.

Minimum: 1. Maximum: 247.

Alarms

alarm logging settings.

Manually Reset Alarms

If an alarm has been triggered, allows both alarms to be triggered again.

Alarms will not be triggered again until they are reset, either automatically or

manually.

SETTINGS (continued)

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