Firma:              Perkin Elmer

Modell:                         1420

Kommentar:     Dokumente engl.

1 Monochromator/Photometer and                           4 Source Compartment

   Electronics Compartment                                       5 Power ON-OFF Switch

2 Recorder Pen                                                        6 Control Panel

3 Dgital Display                                                        7 Sample Area

Figure 1-1 - Model 1430 IR Spectrophotometer

DESCRIPTION

1400-Series Infrared Spectrophotometers are automatic recording, double-beam, ratio recording instruments which feature microprocessor-controlled abscissa and ordinate functions, a four-digit frequency readout, and a. touch-control panel (See Figure 1-1).

The monochromator/photometer and electronics compartment houses the grating monochromator, the detector, and the associated electronics. The source compartment contains the source, the power supply and the fuses.

NUMERICAL SPECIFICATIONS

Principle:                                                      Double Beam, Ratio Recording JR Spectrophotometer, Microprocessor-controlled Abscissa Functions

Optics:                                                         f/5 Filter Grating Monochromator

Abscissa Range:                                           4000 to 200 wavenumbers (4000 to 600 wavenumbers)

Readout Accuracy:                                      ± 6 cm ^-1 (4000 to 2000 wavenumbers)

                                                                  ± 3 cm ^-1 (2000 to 200 (600) wavenumbers)

Repeatability:                                               Within 0.6 mm

Resolution (using NH ₃ gas                            Narrow Slits:

cell, 50 mm Hg):                                          2.5 cm ^-1 (@ 1000 cm ^-1 );

                                                                  4 cm ^-1 (@ 3000 cm ^-1 ).

Wide Slits:

                                                                  5 cm ^-1 (@ 1000 cm ^-1 );

                                                                  8 cm ^-1 (@ 3000 cm ^-1 ).

Ordinate Scale:                                            Transmittance

Ordinate Range:                                           0 to 100%T

Ordinate Accuracy:                                      ±0.5%T (tested between 10% and 80%)

Ordinate Repeatability:                                 Within ±0.05%T

Ordinate Expansion:                                     From X0.1 to X100 in steps of 0.1; Keyboard entry.

Ordinate Beam Balance:                               ± 2%T

Phase Drift Between Scans:                          <± 0.25%T

Uncompensation in Survey Scans:                2% T max. (unpurged)

Double Beam Io:                                          Within a 6%T envelope; less than 1%T step at grating and filter changes.

Recorder Signal-to-Noise Ratio:                  Better than 100:1 outside the regions of atmospheric absorp-tion in the narrow slit program at twelve minute scan speed.

Stray Light:                                                  Less than 1%T (4000 to 450 (600) cm ^-1 );

                                                                       Less than 2%T (450 to 250 cm ^-1 ), Model 1430 only;

                                                                       Less than 3%T (250 to 200 cm ^-1 ), Model 1430 only.

Data Station Interface

Logging Data Interval:                                  3 min scan - 1 cm ^-1 , 2 cm ^-1 , 5 cm ^-1 , 10 cm ^-1

                                                                  12 min scan - 0.5 cm ^-1 , 1 cm ^-1 , 2 cm ^-1 , 5 cm ^-1 ,

                                                                  48 min scan - 0.1 cm ^-1 , 0.2 cm ^-1 , 1 cm ^-1 , 2 cm ^-1 , 5 cm ^-1

Logging Accuracy:                                       12 binary bits

Replot:                                                         From 4000 cm ^-1   to 200 cm ^-1 in 3 min or less (polystyrene spectrum with a 1 cm ^-1   data interval).

CONTROLS, DISPLAYS, AND READOUTS

1.Controls

Power:                                                            ON-OFF toggle switch.

Scan:                                                              On-off touch control.

Chart (Abscissa) Expansion:                            X0.5, Xl and X5

Time Drive:                                                     0.5, 1 and 5 cm per minute.

Integrated Scan Controls

           Resolution @ 1000 cm ^-1 :                   Resolution Mode

                                                                  2.5 cm ^-1 (48 min. scan from 4000 to 200(600 cm ^-1 );

                                                                  2.5 cm ^-1 (12 min. scan from 4000 to 200(600) cm ^-1 ).

                                                                  Survey Mode

                                                                  5 cm ^-1 (12 min. scan from 4000 to 200(600) cm ^-1 );

                                                                  5 cm ^-1 (3 min. scan from 4000 to 200(600) cm ^-1 ).

                                                                  Manual Mode

                                                                  Adjustable resolution dependent upon manual slit width setting (3, 12, or 48 min. scan from 4000 to 200 cm ^-1 ).

Parameter Adjust:                                        Slew, slow then fast forward and fast reverse of mono-chromator and/or chart. Also adjusts offset, baseline, ordinate expansion, slit width, and chart.

Slit Adjust:                                                   Reads spectral slit width (cm ^-1 ) when pressed. Used in conjunction with Manual Slit to change slit width manually.

Index:                                                          Resets the spectrophotometer to 4000 cm ^-1 .

Ordinate Expansion:                                     Used to expand or contract the ordinate scale.

Baseline/Offset:                                            Used to set pen to desired scale position. Will calculate and display offset factor.

Single Beam:                                                Selected by pressing the INDEX touch control when the Instrument is in the Grating Calibration/Single-Beam mode.

8B,2. Displays

Pen Recorder:                                              Electronic chart recorder with 15-cm ordinate, displays from 0 to 100%T.

                                                                  Normal Abscissa (X1 Expansion):

                                                                  100 cm ^-1 /cm (4000 to 2000 cm ^-1 );

                                                                  50 cm ^-1 /cm (2000 to 200(600) cm ^-1 ).

Display:                                                       4 digits; indicates frequency (cm ^-1 ), ordinate expansion factor, pen position, and resolution (cm ^-1 ).

Ordinate Scale:                                            0 to 100 (mechanical scale).

8B,3. Readouts

8B,3a. Readout (on external terminal strip)

Zero to one volt and zero to ten millivolts for external pen

position.

Zero offset control of the external voltage which controls

the external recorder pen position.

8B,3b. Readout (IR Data Station)

IR Data Station interface output (optional).

8B,3c. Multi-Sampler Interface Output

Supplied with IR Data Station interface output (optional).

PHYSICAL SPECIFICATIONS

Power Requirements:                                   300 watts (maximum) at 90 to 132V, 60Hz ±10% and at 180 to 264V, 50 Hz +10%, -20%

Size:                                                            102 cm (40 in.) w x 64 cm (25 in.) d x 27 cm (10 5/8 in.) h

Weight:                                                        54 kg (120 lbs.)

Ambient Temperature Range

(operating within specifications):                   19 to 30 degrees C.

Laboratory Type:                                         Normal chemistry laboratories, schools and research insti-tutions utilizing skilled operators and performing routine

                                                                  IR spectroscopy.

Purge Gas:                                                   Dry air or nitrogen at 20 to 56 liters/min.

Sample Area Access:                                   Three-side accessibility (purge cover removable) with sample holders on the left wall.

Sample Area Optical Dimensions:                 Maximum slit image at left edge of sample space:

                                                                  l2mm x 3mm.

                                                                  Accepts standard 10 cm gas cell.

9.0 cm (3.5 in.) separation; f/4 divergence.