DRT4

Specifications

This system has now been superseded by the moorVMS-LDF, for full details please click here.

Moor Instruments are committed to product development. We reserve the right to change the specifications below without notice.

OPTICS

Laser Safety Classification Class 1M per IEC 60825-1:2001
Class 1 (per 21 CFR 1040.10 and 1040.11)
Output power 2.5mW max.
Wavelength 785nm ± 10nm
Angular spread of laser light from probe tip 28° ± 5°
All specifications include cumulative measurement uncertainties and expected increases in values after manufacture.

TEMPERATURE MEASUREMENT AND CONTROL

Range 5-50°C
Resolution 0.1°C, accuracy ± 0.3°C
Patient isolation (per IEC 601-1 Class 1 type BF)

SIGNAL PROCESSING

Bandwidth: high pass 20Hz
Low pass selectable 3KHz, 15KHz, 22KHz
Output time constants: 0.02s, 0.1s, 0.5s, 1.0s, 3.0s
Automatic gain control and zeroing

OUTPUTS/INPUTS

Graphical/digital LCD screen display
40Hz maximum data display rate to 1/min minimum display rate
0-1000 arbitrary perfusion units, percentage change
2 serial interface RS232 (1 optically isolated)
Analogue outputs 0-10V D/A 12 bit 4 channel (external bus)
Analogue inputs 0-2.5V A/D 10 bit 4 channel (external bus) Serial Numbers up to and including 3124
Analogue inputs 0-10V A/D 12 bit 4 channel Serial Number 3125 and above

INTERNAL SOFTWARE FEATURES

Flash memory programmable from PC
Alarm levels and event markers
Trends - data review and time scale compression
500Kbyte battery backed memory
Percentage change and areas
Mean, maximum, minimum values.
Calibration - storage of probe scaling constants

GENERAL

Universal voltage switch-mode power supply
range 100 to 230V at 55VA, 50 to 60Hz
Dimensions W H D mm 280 x 160 x 360
Weight 7kgs

STORAGE AND TRANSPORT CONDITIONS

Temperature 0-45°C
Humidity 0-80% RH
Atmospheric pressure 500 - 1060hPa
Operating temperature 15-30°C

CLASSIFICATIONS

Electrical safety standards IEC 601-1:
Type of protection against electric shock: Class 1
Degree of protection against electric shock: Type BF
Degree of protection against ingress of liquid: IPXO (not protected)
Degree of protection against flammable anaesthetics - Equipment not suitable for use in the presence of a flammable anaesthetic mixture with air or with oxygen or with nitrous oxide.
Mode of operation - continuous.

PERFUSION MEASUREMENTS

FLUX
Accuracy: ± 10%, relative to Moor Instruments 'standard' DRT4
Precision: ± 3% of measured value
Range: 0-1000 AU

CONC
Accuracy: ± 10%
Precision: ± 5%
Range: 0-1000 AU

DC
Accuracy: ± 10%
Precision: ± 3%
Range: 0-255 AU