Unidata 6509 User Manual

Manual – Water Level Instrument – Model 6509

Manual

Water Level Instrument Update

Model 6509

Revision History

File name / Revision Date Authors

Previous version BX 2004 RS/ JH
Unidata Manual - 6509 Water Level Instrument User Manual Rev B Issue 2.0 2007 AB/CB/JH/MS/KC

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Unidata Manual - 6509 Water Level Instrument User Manual Rev B Issue 2.0

Unidata Pty Ltd 6509X WLI User Manual - Rev B

1 Introduction

The 6509X is an upgrade kit for the 6509B Encoder Water Level Instrument (WLI). It upgrades
all of the electronics and adds SDI-12 functionality.

6509 - Front Pulley Instrument 6541 - Rear Pulley Instrument

The 6541 WLI (rear pulley) superseded the 6509 WLI (rear pulley).

The 6509X upgrade kit consists of a circuit board and an encoder assembly that are installed
into the existing housing. Note that a 6509B version encoder shaft is fitted to the encoder
assembly (this shaft is longer than the one used in the 6541 WLI).

2 Functions & Specifications

The 6509X has the following features:

• LCD display - always on.

• SDI-12 interface - version 1.3 compliant.

• HSIO interface - Unidata interface.

• An external toggle switch for datum point setting.

Specifications

Power Supply: 7.5 - 18.0Vdc, typically 1.4mA.

Alkaline battery pack or external supply.

Low battery indication: ~6V.
Operating Temperature:
Humidity:

-10°C Ù +60°C.

0-100% RH non-condensing.
Data Interfaces: SDI -12 (sensor) version 1.3

HSIO – Unidata std.
Configuration Options: Rotation Direction: cw / ccw

Measurement Units: mm, feet

Range: 65535 or 299999 maximum count.

Pulley Sizes: [500mm] 1mm resolution.
[100mm] 0.1mm resolution.
[1 foot] 0.01’ resolution.

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Unidata Pty Ltd 6509X WLI User Manual - Rev B

3 Installation & Wiring

The layout of the 6509X circuit board is shown below. When mounted in the enclosure the wiring terminal strips
and the 6 way configuration switch are located along the bottom edge. When installed removal of the rear
enclosure cover is required to access the wiring terminations. The layout of the circuit board is as shown below:

A Power switch
B Datum / level setting switch connections
C Power & SDI-12 terminals
D Programming port - manufacturer use only
E Mode configuration switches
F HSIO terminals
G Encoder connector

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