Firma:              Pharmacia

Modell:                         REC 102

Kommentar:     Dokumente engl.

Introduction

Pharmacia Biotech model REC 101 (Code No. 18-1001-42), single-channel recorder and model REC 102 (Code No. 18-1001-43), dual-channel recorder are compact recorders designed to meet the challenging demands of today’s technology.

These instruments are part of the new generation of high quality, flat-bed recorders from Pharmacia Biotech which use a null balancing potentiometric system. They can accommodate a range of input voltages, offer a selection of chart speeds, and allow many functions to be remotely controlled.

The recorders have sophisticated features such as electric pen lift, grid and home functions, forward and reversed paper feed. Paper is transported at a constant velocity selected from the 14 different chart speeds in the range from 0.1 mm/min to 20 mm/s, and can be synchronized with the pump to enable chromatogram comparision.

The positions of the two independent pens (REC 102) represent the levels of the two corresponding inputs from which the time functions are drawn. Owing to the nature of the dual-channel recorder, the pen of channel 1 is always 2.5 mm behind the pen of channel 2. Full sensitivity ranges from 1mV to 20VDC.

Recorder (REC 102) is equipped with one chart drive control panel and two independent, isolated servo systems with a control panel for each channel. Recorders REC 101 and REC 102 have an attractive design with much attention having been paid to ergonomics: control functions are well positioned, keys and switches are very accessible, and paper is easily changed. Pens, paper and keyboard are all protected from accidental spillage by the moulded cover which fits over the recorder. The pens, which are non­smear and disposable, give clear, accurate traces for instance evaluation. Chart paper is of a high quality, and 200 mm wide.

Improved control capabilities permit the use of these recorders in all Pharmacia Biotech chromatography systems.

Technical Specifications

Recording channels:               REC 101: 1-channel

                                               REC 102: 2-channels

Input ranges:                           1, 2, 5, 10, 20, 50, 100, 200, 500 mV and 1, 2, 5, 10, 20 V

                                               FSD (lull scale deflection) for each channel

Variable ranges:                      40-100 % FSD

Accuracy of span:                   < 0.3 % FSD

Non-linearity:                           < 0.3 % FSD

Dead zone:                              < 0.2 % FSD

Pen response time:                 0.2s

Input impedance:                     1 MΩ DC

Input:                                        Floating asymetrical

Input terminals:                        “Low profile" banana plugs

Input current:                           < 5 nA

Maximum input voltage:          Max. 60 V between channels and max. 30 V between channel       and ground

Common mode rejection:       > 130 dB

Zero adjustment range:           -50 % to +150 % of FSD

Zero position:                           Choice of left or right-hand side of chart by a switch on rear          panel. (Right-hand zero point on delivery)

Zero drift:                                 < 1 µV/ °C

Pen lift:                                    Electrical, independent control of pen 1 and pen 2, automatic        pen lift at power down or after 30 s stop of chart speed

Chart speed range:                 0.1, 0.2, 0.5, 1, 2, 5, 10, 20 mm/s or mm/min

Chart paper:                            25 m roll according to DIN 16 230

Chart paper life:                       Max. 4 167 hours at lowest chart speed. Min. 20 min at highest     chart speed

Pens:                                       Disposable, fibre-tip cartridge