Lumasense-technologies M335 Manual de usuario descargar pdf (Pagina 9)

M335 Manual Introduction  9

2 Introduction

2.1 Description

The M335 blackbody calibration source is a general purpose high temperature source which

provides a very rapid heat-up time of only 30 minutes to reach 1200 C. A self-tuning digital PID

controller with adjustable set point holds the temperature to within 1 C.

The Model M335 blackbody calibration source design achieves significant weight and size

reduction over the M330 series with only minor sacrifices in specification and performance,

making it an ideal unit where portability is required or space is limited. The cavity combined

with radiance calibration yields an emissivity of 1.0 over the temperature range of 300 to

1500 °C with an aperture of 16mm. An integrally mounted PID controller completes this versatile

calibrator.

2.1.1 Accuracy

Typical accuracy of the after radiometric calibration is ±0.4% ±1 °C of reading. Please refer to

the NIST traceable calibration report for the measurement uncertainties and controller setpoint

corrections (systematic corrections).

The M335 Blackbody Calibration Furnace has been thoroughly tested at factory prior to

shipment.

Every 300 to 400 hours of operation check the accuracy of temperature calibration at several

points throughout the range. This test is very important because the control thermocouple will

gradually lower its output causing the temperature to increase. A running log of the calibration

should be maintained by your standard department.

2.2 Technical Data

Temperature

ange

300 to 1500

°C or 570 to 2730

°F

Accuracy:

±0.4% of reading ±1 C

Temperature Resolution:

1 C

Stability:

1.0 C per 8 hour period

Aperture Diameter:

16.5 mm

(0.65")

Source Non

Uniformity:

Non-Uniformity: ±1 C within center 1/3 of ID.

Heated Cavity Shape:

Closed end tube

Effective

Emissivity





0.65

1.8

Sensor:

Precision platinum thermocouple Type B

Method of Control:

Digital Self

Tuning PID

Controller

Warm

up Time:

min

utes

from ambient to 12

°C.

Operating Ambient Temp.:

0 C to 44 C (32 F to 110 F)

Cooling

Fan cooled, air inlet on rear panel

Power Requirements:

115VAC±10% 50/60 Hz. 2.0kw max. (230 VAC optional)

Dimensions:

290

mm H x 495

mm W x 550

mm D

Maximum Weight:

kg (62 lbs)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 18 19

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Lumasense-technologies M335 Manual de usuario Pagina 9

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