LumaSense Technologies M310 - Manual (Page 9)

M310 Manual Introduction 9
2 Introduction
2.1 Description
The M310 is a portable blackbody calibration source utilizing a digital indicating temperature
controller that may be set to any temperature between ambient temperature to 350 °C (662 °F)
[450 °C (842 °F) optional]. A precision RTD temperature sensor is embedded in the blackbody
emitter providing high accuracy and repeatability. The temperature controller uses the industry
standard PID algorithms to control the emitter temperature to within +/-0.1 °C. The blackbody
emitter mechanism uses a resistive heating device that provides long life, short stabilization
times and stable temperature control.
Temperature setpoints are altered simply by pressing the or arrow buttons on the controller.
The lower display (green) is the setpoint and the upper display (red) is the actual blackbody
emitter temperature.
2.2 Technical Data
Temperature Range: Ambient +5 C to 350 C or 662 F
Ambient +5 C to 450 C or 842 F (HT Version)
Accuracy: ±0.25% of reading ±1 C when using Calibration Certificate
correction factors
Temperature Resolution: 0.1 C
Stability: 0.03 C per 8 hour period
Aperture Diameter: 76 mm (3.00”)
Emissivity 1.0 effective emissivity at 8-14µm
Temperature Sensor: Precision platinµm RTD.
Method of Control: Digital PID controller
Operating Ambient Temp.: 0 C to 44 C (32 F to 110 F)
Operating Humidity: 90% RH max, non-condensing
Power Requirements: 115V AC ±10% 50/60 HZ 920VA fused max., 600W heater. (230V
AC Optional).
Dimensions: 178 mm H x 279 mm W x 178 mm D
Weight: 5.6 kg (12.4 lbs)
Optional Accessories: RS485/RS232C serial communication output OPTIONAL
2.3 Background Influence On Apparent Emissivity
When using a blackbody source at temperatures well above ambient, common sense dictates
how the blackbody will behave. When using a source close to ambient temperatures, different
things happen. Since the background such as the room, wall, and you could be warmer than the
blackbody emitter, the energy emitted from the emitter is the sum of the background reflection
and the emitter temperature. When emitter emissivity is less than 1.0, the background energy
times (1-emissivity) reflects to the device under calibration. For this reason, the M310 may
appear to have a higher “apparent emissivity” near ambient than when operated at higher
temperatures.