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Objektnummer	B00017357
ID-number	017357
Object name	Perkin Elmer Nelson 970 A
Status	Archiv

Status, terms of delivery and payment

Verification of devices

The second-hand devices are verified by Labexchange Service GmbH before delivery. You are receiving only fully functional devices.

Dispatch time

The stated dispatch times are the shortest possible ones for each article. The effective dispatch times can vary. The effective dispatch times will be stated in the order confirmation.

As a matter of principle, we are offering collective deliveries. The shipping time is calculated based on the position with the longest lead time. A partial delivery is possible on explicit request.

Shipping methods

Parcel services, forwarding agencies, self-pickup, delivery by Labexchange fleet.

Delivery information

Prices exclude shipping costs. Stated shipping costs are to be expected. Deviations are possible. If transport costs are not specified, please ask separately for them.

The stated transport and packing charges apply to the most favorable route if transport and are to be understood as subject to verification due to unexpected cost increases. By reason of unpredictable events, cargo rates and delivery times can change at any time and therefore have to be adapted to the recent situation. Import formalities and possible customs charges will be borne by the purchaser. Incoterm coding according to Incoterms 2010: For persons who collect the devices themselves: EXW, for dipatch by sea: CFR, by air freight: CPT, other shipments: DAP. Note for international shipments: A proof of preference/EUR1 will not be issued by us. When self-collecting/ordering EXW from countries within or outside the European Union, 16% VAT will be retained as a deposit until we have received the corresponding confirmation of arrival/bill of delivery from the buyer.

Terms of payment

We do not accept payment by letter of credit, PayPal, etc. In each case the invoice amount is payable without deduction. Discount is not granted.

Country	Possible payment methods	Comment
DE, AT, CH	Payment by invoice, payment in advance, paymet by credit card	Payment by invoice is only possible for corporate clients.
NL, BE, LU	Payment by invoice, payment in advance, payment by credit card	Payment by invoice is only possible for corporate clients
Other countries	Payment in advance, payment by credit card

Our General Terms of Sale, Delivery and Payment are valid and are available for download here.

The goods are offered subject to prior sale.

Definition of status

All articles are used articles, except an article is listed especially as a new device.

Status	Condition	Comment
Immediately available	Used	The article is fully functional and in impeccable condition. It can be shipped immediately.
In stock	Used	The article is on stock. Our service technicians will verify the article before delivery. You are receiving only a fully functional article.
Published	Used	The article is still with the provider. After your order the article will be purchased and verified by us before being shipped to you. A certificate of operativeness as well as a service report are included in delivery.
New device	new	The article is brand new and unused. Regarding new equipment the guarantee/warranty conditions of the corresponding manufacturer apply.
Labprocure	Used	Labprocure GmbH, as the advertiser, is responsible for the content of this device offer. Labprocure assumes liability for the offers advertised here and for the photos and offer texts included. Labprocure GmbH, Bruckstraße 58, 72393 Burladingen.

Firma: Perkin Elmer

Modell: Nelson Ser.900

Kommentar: Dokumente engl.

The PE Nelson 950A and 970A (collectively, the 900 Series) Intelligent Interfaces are analog-to-digital interfaces that acquire data and store it in a local buffer memory. The readings are transmitted to the host computer through either an IEEE-488 General Purpose Instrumentation Bus or an RS-232C serial link. Each Intelligent Interface is capable of multiplexing data from two detectors during a single run. Four programmable voltage ranges are available: 10 V, 2 V, 1 V, and 0.1 V. Each voltage range provides a dynamic range of

1:1 000 000 at a sampling rate of 10 Hz.

The Intelligent Interface has two sense input lines (START and STOP). It contains 7 relays that can be programmed by a host computer to control external devices and one system READY relay for communicating with an autosampler. The Rack and Vial Port allows the Intelligent Interface to read digital data at TTL signal levels from autosamplers. The Front Panel provides membrane switches for local control of the interface by the user and an LED display for power, READY, and data range status.

Internal to the Intelligent Interface is a HD64180 microprocessor that executes commands received from the host computer. These commands are part of the chromatography software provided in the PE Nelson Turbochrom, 2600, 4400, or PC Integrator data systems. There are two versions of the interface: the 950A and the 970A. The versions are distinguished only by the available memory, which is 16K and 256K bytes respectively. Memory usage in the interface is kept to a minimum by a delta modulation scheme that stores only the difference between successive readings. On average, each data point can be represented by about 2 bytes of internal storage. The actual amount is a function of the sampling rate and the voltage swing in the data. The segmented memory feature allows individual runs to be separately stored in a First-In-First-Out (FIFO) buffer that optimizes memory allocation.

Interface Models and Memory Options

Model

Number

RAM Space

(bytes)

Data Storage

(2.2 bytes per pt)

950A

16 384

7 447

970A

262 114

119 156

The 900A Series Interface can be configured for unipolar or bipolar operation at any one of four input voltage ranges. The Input voltage range is specified in the acquisition method of the host software. The polarity mode is specified using the Setup switches on the Back Panel. The available input voltage ranges are tabulated in the "Technical Data" section.

TECHNICAL DATA

Dynamic Range: 1 000 000 Counts/Period.

Sampling Period = 0.1 s

(10 000 000 x Sampling Interval in s)

Counts/Period.

Sampling Period 0.1 s

1 Count = 1 µV On 1 V Scale)

Input Impedance: 10 Mohms Differential Input

Input Ranges:

Operating Range, V

Nominal

Range, V Unipolar Bipolar

0.1 -0.0005 to +0.0995 -0.05 to +0.05

1.0 -0.005 to +0.995 -0.5 to +0.5

2.0 -0.01 to +1.99 -1.0 to + 1.0

10.0 -0.05 to 9.95 -5.0 to + 5.0

Resolution: 0.1 µV on 0.01 Volt Scale at 10 Hz

1.0 µV on 1.0 Volt Scale at 10 Hz

2.0 µV on 2.0 Volt Scale at 10 Hz

10.0 µV on 10 Volt Scale at 10 Hz

Sampling Rate: 100 Hz to 0.1 Hz

Maximum Gain Error: ± 2.5 %

Maximum Std. Dev.

Gain Error: ± 0.17

Maximum Nonlinearity: ± 0.10% FS

Rack/Vial & Contact Closure or TTL Compatible

Start/Stop Inputs: 0.0 V to 0.8 V = "LOW"

2.8 V to 5.0 V = "HIGH"

Hold "LOW" at least 10 ms

Level Sensitive/Not Latched

Relays: 24 VDC.

(Max Rating) 0.5 Amp or 12 VA (When Relay Is CLOSED)

10 ms Cycle Time

Power/ 100/ 120/220 VAC +10%, -13%

Operating: 240 VAC +15%, -10%

120 VA MAX at 47 - 63 Hz

Consumption: <16 Watts

Fuse: 0.750 Amps for 100-120 VAC

3AG, Normal Blow (U.S. and Canada)

0.400 Amps for 220-240 VAC

Type T DIN, (Europe and Other)

ESD Protection: 15 KV Discharged through 150 pF and 150 Ohms

Temperature: 0 to 45 degrees C

Product group: HPLC-Miscellaneous

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