Omega OS130A Series Manuale utente
User’s Guide
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Miniature Non-Contact Infrared
Temperature Sensor/Transmitter
TM
CAUTION! – This product
is not intended for medical
use or use on humans
OS137A
Model
OS130A Series
OS137A Model Miniature Non-Contact Infrared
Temperature Sensor/Transmitter
Table of Contents
Section Page
Caution & Safety Information ................................................................. iii
Safety Warnings and IEC Symbols ....................................... .................. iii
Section 1 Introduction ............................................................................... 1
Section 2 Installation ................................................................................. 1
2.1 Unpacking ............................................................................................ 1
2.2 Electrical Connection .......................................................................... 2
Section 3 Operation .................................................................................. 3
3.1 Measuring Temperature ...................................................................... 3
3.2 Ambient Temperature ........................................................................ 4
3.3 Atmospheric Quality ........................................................................... 4
3.4 Alarm Setting ...................................................................................... 6
Section 4 Laser Sight Accessory ............................................................... 7
4.1 Warnings and Caution ......................................................................... 7
4.2 Operating the Laser Sight Accessory .................................................. 7
Section 5 Specifications ............................................................................ 9
5.1 General ................................................................................................. 9
5.2 Laser Sight Accessory ........................................................................ 10
Section 6 Emissivity Tables ..................................................................... 11
i
Table of Figure
Figure egaPnoitpircseD
2-1 General Wiring Diagram .............................................................. 2
2-2 Alarm Output Wiring Diagram .................................................... 2
3-1 Optical Field of View .................................................................... 3
3-2 Location of Emissivity & Alarm Adjust and Alarm Switch ......... 3
3-3 Mounting Bracket, OS137-MB ..................................................... 4
3-4 Air Purge Collar, OS137-AP ......................................................... 4
3-5 Stainless Steel Housing ................................................................ 5
3-6 Water/Air Cool Jacket, OS137-WC .............................................. 5
4-1 Laser Sighting Accessory, OS137-LS ........................................... 8
4-2 Laser Warning Label.................................................................... 8
ii
OS137A Model Miniature Non-Contact Infrared Temperature Sensor/Transmitter
If the equipment is used in a manner not specified in this manual, the
protection provided by the equipment may be impaired.
The Installation category is one (1).
There is no user replaceable fuse in this product.
The output terminals of this product are for use with equipment (digital
meters, chart recorders, etc.) which have no accessible live parts. Such
equipment should comply with all the applicable safety requirements.
Do not operate the equipment in flammable or explosive environments.
The unit comes with a 1.82 m (6’) shielded cable for power and output
connections. The cable is a multi-conductor, 24 AWG stranded wire with the
rating of 600 VDC, 205ºC (401°F) Teflon® insulation.
Power must be disconnected before making any electrical connections.
The recommended power supply should be VDE or UL approved.
Rating:12-24 VDC @ 50 mA mininum power with overload protection.
The supply voltage to the transmitter should not exceed 24 VDC.
OS137A Model Miniature Non-Contact Infrared Temperature Sensor/Transmitter
CAUTION & SAFETY INFORMATION
This device is marked with international safety and hazardous symbols in
accordance with IEC1010. It is important to read and follow all the precautions
and instructions in this manual before operating or commissioning this device
as it contains important information relating to safety and EMC. Failure to
follow all the safety precautions may result in injury and/or damage to your
equipment.
CAUTION & SAFETY INFORMATION
IEC Symbol Description
Caution Symbol
Direct Current
Laser Symbol
iii
Introduction
1
NOTE:
The OS 137 A
Model is a precision ,
miniature infrared transmitter .
It
measures temperature via non -contact ,
and
provides an
analog output
proportional
to
the
measured
temperature .
The
OS137A
Model
is
offered
in
three
temperature ranges:
0
to
100ºC
(32
to
212ºF),
-18
to
260ºC
(0
to
500º
F)
and
-18
to
538ºC
(0
to 1000 ºF).
The
analog
output
is
offered
as
4
to
20
mA ,
0
to
5
Vdc ,
0
to
10
Vdc ,
10 mV /degree
C
or
F,
or
K
type
thermocouple.
The
unit
provides
adjustable
emissivity
from
0.5
to
1.0,
10
to
1
optical
field
of view,
and
field
adjustable
alarm
output.
The
super-compact
design,
25.4
mm
OD
x
127
mm
length
(1.0”
OD
x
5.0”
L) is
ideal
to
measure
temperature
in
confined,
and
hard
to
reach
places.
The
Stainless
Steel
housing
is
NEMA-4
rated.
The
unit
comes
standard
with
a
1.82
m
(6’)
shielded
cable.
SECTION 1-INTRODUCTION
Remove the packing list and verify that you have received all your equipment.
If you have any questions about the shipment, please call OMEGA Customer
Service at:
1-800-622-2378 or 203-359-1660. We can also be reached on the internet at
www.omega.com
email: [email protected]
When you receive the shipment, inspect the container and the equipment
for any signs of damage. Note any evidence of rough handling in transit.
Immediately report any damage to the shipping agent.
The following items are supplied in the box:
• The infrared transmitter, OS137A with the 1.82 m (6’) shielded cable.
• Two mounting nuts
• The User’s Guide
The following describes the ordering information:
OS137A – * – ** , where
- * means:
-1 : 0 to 100°C (32 to 212ºF) temperature range
-2 : -18 to 260ºC (0 to 500ºF) temperature range
-3 : -18 to 538°C (0 to 1000°F) temperature range
- ** means:
-MA : 4 to 20 mA current output
-V1 : 0 to 5 Vdc output
-V2 : 0 to 10 Vdc output
SECTION 2 – INSTALLATION
2.1 – Unpacking
The carrier will not honor any damage claims unless all
the shipping materials are saved for inspection. After
examination and removal of contents, save packing material
and carton in the event that reshipment is necessary.
1
Installation 2
NOTE:
-K : K type thermocouple output
-MVC : 10 mV/ºC output
-MVF : 10 mV/ºF output
For longer power/output cable, add suffix “xxFT” to the model part number.
The following table lists the optional accessories:
The shielded cable provides the power and output connections. Connect
the body of the OS137A to Earth Ground. Leave the shield disconnected
and insulated at the end of the cable. Fig 2-1 shows the wiring diagram for
different analog outputs. Fig. 2-2 shows alarm output connections.
2.2 – Electrical Connection
Apply DC power after making all the wiring connection
Accessories
Model No.
OS137-MB Mounting Bracket
Water/Air Cooling Jacket with Built-in Air Purge Collar
Air Purge Collar
Laser Sighting
OS137-WC
OS137-AP
OS137-LS
PSR-24S
Description
Figure 2-1. General Wiring Diagram
Figure 2-2. Alarm Output Wiring Diagram
WARNING!
Connecting the Green alarm lead
to ground, or to any load exceeding
100mA, will result in damage to the
OS137A and void the warranty.
If the alarm output is not
being used, it must be left
disconnected and insulated
2
Regulated 24VDC (400 mA) Power Supply
Introduction
3
Before starting to measure temperature, make sure the following check list is
met:
The power and output connections are made (Fig 2-1).
The target is larger than the optical field of view of the transmitter (Fig 3-1).
Use the Laser Sighting accessory (optional), to align the transmitter to the
center of the target area.
Remove the End Cap to get to the Emissivity Single Turn Pot (Fig. 3-2). Set
the Emissivity Pot based on the target surface. Then put back the End Cap.
Make sure the output load is within the product specification.
SECTION 3 – OPERATION
3.1 – Measuring Temperature
Figure 3-1. Optical Field of View
Figure 3-2. Location of Emissivity & Alarm Adjust and Alarm Switch
3
Figure 3-3. Mounting Bracket, OS137-MB
Operation 3
The transmitter can operate in an ambient temperature of 0 to 70°C (32 to 158°F)
without any water cool jacket. It can operate from 0 to 200°C (32 to 392°F) with
the water cool jacket accessory, OS137-WC (Fig 3-6 & 3-7). It can operate up to
110°C (230°F) with air cooling.
There is a warm up period of 1 to 2 minutes after power up. After the warm up
period, temperature measurement can be made.
When the ambient temperature around the transmitter changes abruptly, the sensor head
goes through a thermal shock. It takes a certain amount of time for the sensor head to get
stabilized to the new ambient temperature. For example, it takes about 30 minutes for the
transmitter to stabilize from the 25°C to 50°C (77°F to 122°F) ambient temperature.
3.2 – Ambient Temperature
Environments with smoke, dust, and fumes dirty up the optical lens, and cause
erroneous temperature readings. To keep the surface of the optical lens clean, the
air purge collar accessory is recommended, OS137-AP (Fig 3-4).
The following figures show the Mounting Bracket (OS137-MB), Air Purge Collar
(OS137-AP), Stainless Steel Housing and Water/Air Cool Jacket (OS137-WC),
with built-in air purge collar.
3.3 - Atmospheric Quality
4
Figure 3-4. Air Purge Collar, OS137-AP
Figure 3-5. Stainless Steel Housing
Figure 3-6. Water/Air Cool Jacket, OS137-WC
Operation
3
5
The unit provides 0-100% alarm setpoint adjustment. Here is an
example of an alarm setting:
• An OS137A-3-MA (4/20 mA output), the alarm is to be set at 204°C
(400°F) temperature.
• Connect the alarm output as shown in Fig. 2-2.
• Remove the End Cap to get to the Alarm Switch and the Alarm Adjust
(Fig. 3-2).
• Set the Slide Switch on the main board to the Alarm position (2).
• Measure the analog output, and adjust the Alarm Potentiometer
until the output reads 10.4 mA which is 40% (204°C, 400°F) of the
temperature range -18 to 538°C, (0 to 1000°F)
[10.4mA = 40 x (20-4) /100 + 4]
• Set the Alarm Slide Switch back to the Real Time position (1).
• If the temperature reading is below the alarm setpoint, the Alarm
Output stays low, otherwise it goes high (Alarm Condition).
• The Alarm Output can drive an external mechanical relay.
Operation 3
3.3 - Atmospheric Quality
6
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