Daytronic 10A31-4 Handleiding

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1GENERALDESCRIPTIONANDSPECIFICATIONS

The Model 10A31-4 is for measurement of displacement, force, pressure, and other

parameters obtained with a

variable reluctance transduceror linearvariable dif-

ferential transformer (LVDT)

. Based on the synchronous carrier-demodulatorprin-

ciple, it supplies regulated, remotely sensed AC excitation for four independent

transducer channels. It then demodulates, filters, and amplifies the resulting signals to

produce system outputs precisely proportional to LVDT core displacement. The

10A31-4 automatically adjusts to the signal phase shift of the transducer in use, there-

by insuring optimum sensitivity and linearity. Special input provisions exist for “long-

stroke” LVDT's (full-scale range of ±1 inch or greater).

For each of its four analog inputs, the 10A31-4 produces two displayable outputs: one

with “normal” analog filtering and one with

high bandwidth characteristics (see Speci-

fications and Table 1, below). All four channels share a common sensed excitation of

100 mA (rms), maximum. As explained in Section 2, for cables over 25 feet in length,

this limits the distance from the sense point to the transducer to about 20 feet of 18-

gage wire.

The 10A31-4's eight SUBCHANNELS are assigned as follows:

Table 1 Model 10A31-4 Subchannels

Subchannel No.Function

1Input No. 1, low-bandwidth filter

2Input No. 2, low-bandwidth filter

3Input No. 3, low-bandwidth filter

4Input No. 4, low-bandwidth filter

5Input No. 1, high-bandwidth filter

6Input No. 2, high-bandwidth filter

7Input No. 3, high-bandwidth filter

8Input No. 4, high-bandwidth filter

ADDITIONAL10A31-4 SPECIFICATIONS

Transducer Types

: 5- or 7-wire LVDT's capable of 3280-Hz operation and having pri-

mary impedance of 80 ohms or greater (all Daytronic LVDT transducers are suit-

able); 3- or 5-wire variable reluctance transducers

Sensitivity Range: Accommodates full-scale ranges from ±0.010 in. (±0.25 mm) to

±6.0 in. (±15.24 cm), when used with Daytronic or equivalent transducers; for System

10 channel “type” codes assigned to 10A31-4 data channels, see Table 2, below

Standard Input (rms, full-scale): 78, 156, or 312 mV/V

Long-Stroke Input (rms, full-scale): 525 mV/V, 1.05 V/V, or 2.10 V/V

(cont’d)

MODEL10A31-4

QUADLVDT

C

ONDITIONERCARD

GENERALDESCRIPTIONANDSPECIFICATIONS10A31-4.1

SYSTEM10

ANALOGINPUTCARDS

1.E.2.10A31-4

Product specificaties