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Power Supply and Analog Output Connections

Alarm Output Connection

Operation

Main Board

Here are the important components on the Main Board, 

as shown below.
1. Terminal Block for Power & Output connections
2.  Single Turn Potentiometer to adjust Emissivity in 

tenths (0.x_)

3.  Single Turn Potentiometer to adjust Emissivity in 

hundreds (0._x)

4.  Slide switch to select between real time Normal 

Operation) and alarm set point.

5.  Alarm set point adjust, P3
6.  °F to °C Jumper setting

Main PC Board

ARTWORK/PRODUCT ART/

 DWGS/START HERE ARROW

START HERE

ARTWORK/PRODUCT ART/

 DWGS/START HERE ARROW

2

ARTWORK/PRODUCT ART/

 DWGS/START HERE ARROW

3

ARTWORK/PRODUCT ART/

 DWGS/START HERE ARROW

4

Using This Quick Start Manual

Use this Quick Start Manual with your OS100E Series 

mini-infrared transmitter for quick installation and easy 

operation. Refer to the full manual for detailed informa-

tion (#M3572A)

General Information  

The low cost OS101E mini-infrared transmitter 

provides non-contact temperature measurement 

for industrial applications. The unit measures a 

temperature range of -18 to 538°C (0-1000°F) and 

provides a linear analog output of either 4-20 mA, 

0-5 VDC, K type TC, 1 mV/°C, or 1 mV/°F.
The new OS102E mini-infrared transmitter has 

all the functions of OS101E plus a built-in LED 

display that shows the measured temperature in 

degrees F or degrees C which is switchable in the 

field.
The miniature sensor head design 2.5 cm dia. X 

6.3 cm Length (1" x 2.5") is ideal for measuring 

temperature in confined, and hard to reach places. 

The aluminum sensor head as well as the rugged 

electronic housing (Die cast Aluminum) are 

NEMA-4 rated.
The sensor head is connected to the electronic 

housing via a 1.82 m (6 feet) shielded cable as 

standard. The unit provides field adjustable alarm 

output.
The following optional accessories are available:

Electrical Connection

Sensor Head Cable

The Sensor head is pre-wired to a 1.8 m (6 feet) 

shielded cable. Plug & lock in the male connector 

to the mating female connector on the aluminum 

housing.
Power & Output Connection 

Open the cover of the main aluminum housing. 

Slide the cable through the strain relief and connect 

the wires to the terminal block on the board as on 

right.

Ambient Temperature

The Sensing head can operate in an ambient 

temperature of 0 to °C (32 to 158°F). The Sensing head 

in the high temperature model (-HT) can operate in an 

ambient temperature of 0 to 85°C (32 to 185°F) without 

any cooling required. The Sensing head can operate up 

to 200°C (392°F) using the water cool jacket accessory 

OS100-WC.
There is a warm up period of 3 minutes after power up. 

After the warm up period, temperature measurement 

can be made.
When the ambient temperature around the sensor 

head changes abruptly, the sensor head goes through 

thermal shock. It takes a certain amount of time 

for the sensor head to stabilize to the new ambient 

temperature. For example, it takes about 30 minutes for 

the sensor head to stabilize going from 25°C to 50°C (77 

to 122°F) ambient temperature.
The sensor head dimensions are shown below.

Sensor Housing

Measuring Temperature
Before starting to measure temperature, make sure that 

the following check list is met:
•  The power and analog output connections are made
•  The sensor head is connected to the main unit
•  The slide switch (SW1) on the main board is set to 

real time

•  The target is larger than the optical field of view of 

the sensor head (see below for field of view diagram)

•  The emissivity adjustment on the main board is set 

properly

•  The output load is within the product specification
For 102E transmitters, follow these additional steps:
• The temperature display is set to °F or °C
•  For 4-20mA output models, make sure an output 

load is added, i.e. 250 Ohms.

Optical Field of View

Alarm Setting

The unit provides 0-100% alarm set point 

adjustment. Here is an example of an alarm setting.
•  An OS101E-MA (4/20 mA output), the alarm is 

to be set at 400°F temperature.

•  Connect the alarm output as shown in Alarm 

Output Connection diagram.

•  Set the slide switch (SW1) on the main board to 

the Alarm position.

•  Measure the analog output, and set the 

Potentiometer P3 until the output reads 10.4 mA 

which is 40% (400°F) of the temperature range.

•  Set the slide switch (SW1) back to the Real Time 

position.

•  If the temperature reading is below the alarm set 

point, the alarm output stays high, otherwise it 

goes low.

On the OS102E, you can set the alarm set point 

directly based on the temperature display.
Adding Extension Cable

You can add an extension cable between the Sensor 

Head and the main electronic housing up to 15.2 

m (50 feet). If adding an extension cable, you must 

refer to the section RS-232 Communication in 

order to adjust the cable offset through your PC’s 

terminal. 
Mounting Dimensions

Please refer to pages 3-10 and 3-11 in the full 

manual (M3572A) for diagrams of mounting 

dimensions.

Type-K

4-20 mA

mV/Dgree

0-5/0-10 Vdc

ANALOG OUTPUT

T/C

V

mV

mA

+

+

POWER

SUPPLY

12-24 VDC

CHASSIS

6
7
8
9

5

4

3

2

1

POWER

SUPPLY

5-24 VDC

ALARM

RELAY

*IN4004 DIODE

OR

EQUIVOLENT

--

+

6

7

8
9

5

4

3

2

1

3/4-16 UNF

25 (1.0)

20

(0.8)

63.5

(2.5)

Dimensions mm (in.)

SPOT DIA.* (CM)

SPOT DIA.* (IN)

DISTANCE: SENSOR TO OBJECT (IN)

D:S=6:1

1cm@0

0

20

3.3

40

6.6

60

10.0

80

13.0

100

16.0

122

20.0

0.4"@0"

2.0"

1.0"

4.0"

6.0"

8.0"

48"

36"

24"

12"

6"

0"

DISTANCE: SENSOR TO OBJECT (CM)

* SPOT DIAMETER MEASURED AT 90% ENERGY

F

C

DISPLAY BOARD

INSTALLED ON

MODEL OS102E ONLY

J4

DS2 DS3 DS4

DS1

2 3

1

7 8 9

5 6

4

7

7

8

2

8

5

6

4

3

6

5

8

8 8

J3

P3

2

3

4

8

0

9

9

0

1

1

6

5

4

2

3

1

 Model No. 

Description

 

OS100-MB 

Mounting Bracket

 

OS100-DR 

DIN Rail Mounting adapter

 

OS100-WC 

Water Cooling jacket

 

OS100-AP 

Air purge collar

 

OS100-LS 

Laser Sighting

 

OS100-CA15FT  Sensor Head Extension Cable (4.6 m, 15")

 

OS100-CA25FT  Sensor Head Extension Cable (7.6 m, 25')

 

TX8-100 

8 Conductor stranded Shielded cable (30 m, 100')

 

PSU-93 

Unregulated 16-24 VDC Power Supply

 

CAL3-IR 

NIST Traceable Calibration

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