LS SERIESHIGH TEMPERATURE SOURCES
The LS Series of cavity type high temperature blackbodies
incorporates three decades of continuous improvement. EOI
infrared sources have set the performance standard in themost demanding laboratories worldwide since 1964.
The excellent uniformity, long term stability, repeatability andhigh emissivity of the LS Series provide a known output for
testing and calibration of the most sensitive infrared sensors,thermometers, imaging systems and radiometric devices.
Configuration
The LS Series blackbodies are available in bench top
configuration or integrated into one of the many Target
Projector/Simulators and Automatic Test Stations EOI offers.
Standard cavity sizes from 0.25" to 2.0" cavity diameters andtemperature ranges up to 1400°C are available.
Apertures may be added from EOI's extensive listof standard apertures. EOI can also supply
custom apertures.

Controller
Each LS Series blackbody is supplied with a digital 19" rack
mount controller. Proportional, integral and derivative (PID)parameters are tuned individually for each blackbody to yieldexcellent stability (typically ±0.25°C), and repeatability withfast slew rates and settling times. Temperature of theblackbody can be set with 0.1°C resolution and actual
temperature is displayed to 0.01°C on the front panel of thecontroller.

Calibration
Each LS blackbody is calibrated at EOI prior toshipment. Recommended calibration cycle is 6
months. Calibration is traceable to the National
Institute of Standards and Technology (NIST).
The two point calibration table is stored inmemory and is easily updated via the front panel
keypadThe LS Series blackbody temperature
can be set manually and features:—Closed Case Calibration—Fast Heating and Cooling Rates

Computer Interfaces
Complete computerized control of the system is available
through built-in interfaces. The IEEE 488 and any one of theRS formats may be used at the same time.

—Temperature Ranges to 1400E
EC—

Cavity Diameters to 2.0"—

Certification

Baffle Pate
An air cooled baffle plate is standard with cavities 0.25 inchor larger.

—

2 Year Warranty

Apertures
Each LS blackbody is equipped with either a manuallyindexed aperture wheel or aperture holder.

859 Ward Drive — Santa Barbara, CA 93111-2960 — Phone 805-964-6701 — Fax 805-967-8590
E-mail eoi@electro-optical.com

www.electro-optical.com

Case Temperature
The case temperature will never exceed 10°C aboveambient.
Operating Ambient
The LS blackbody is designed to operate over an ambient
temperature range of –40 to +60°C. The LS temperature
controller will operate over an ambient temperature range of0 to 50°C.

Optional Equipment Available:
Manual Aperture Wheel
Manual Filter Wheel
Modulator, Fixed Frequency
Modulator, Variable Frequency
Modulator, Phase Locked
Solenoid ShutterStandard Models
TEMPERATURE RANGE
50 to 1050EECModelCavity Diameter

LS1050-025

0.25O

LS1050-050

0.50O

LS1050-100

1.00OLS1050-200

2.00O

TEMPERATURE RANGE
50 to 1250E
EC
Model

Cavity Diameter

LS1250-025

0.25O

LS1250-050

0.50O

LS1250-100

1.00OLS1250-200

2.00O

TEMPERATURE RANGE
50 to 1400E
EC
Model

Cavity Diameter

LS1400-100

1.00"LS1400-200

2.00"

Specifications
Stability± 0.1EC

Uniformity±0.5 to ±3EC

Emissivity

0.97 to 0.99

Set Point Resolution

0.1EC

Display Resolution

0.1 or 0.01EC

Power Requirements
The LS blackbodies operate from 100, 120, 220, or 240 VAC ± 10% (switch selectable), 50/60 Hz. The larger systems operated on
220V and may require a power amplifier in addition to the controller. Standard cable lengths between controller and blackbody orcontroller/output stage and output stage/blackbody are 8 feet. The plug-in main power cable is also 8 feet long.
Copyright ©1999 Electro Optical Industries, Inc.
eoLS358D

Specifications subject to change without notice.

859 Ward Drive — Santa Barbara, CA 93111-2960 — Phone 805-964-6701 — Fax 805-967-8590
E-mail eoi@electro-optical.com

www.electro-optical.com