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Greyline Instruments SLT32 User Manual

Greyline Instruments SLT32
54 pages
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USER’SGUIDE
Installation&Operation
Instructions
Level&FlowMonitor
ModelSLT32
ManualSeriesB.11
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Greyline Instruments SLT32 Specifications

General IconGeneral
Protection RatingIP68
Output4-20 mA
Power12-24 VDC
Power Supply12-24 VDC
Temperature Range-20°C to 60°C
Operating Temperature-20°C to 60°C

Summary

Quick Bench Test

Power Input Connections

Details on connecting AC and optional DC power sources to the instrument.

Configuration and Settings

Password Protection

Setting a password to prevent unauthorized access to calibration menus.

Units and Mode Selection

Choosing measurement units (ft, in, cm, %) and operating modes (Range, Level, Flow).

Flow Measurement Setup

Flume Selection

Menu for selecting flume or weir type for open channel flow measurement.

Level Calibration Procedures

Determine Calibration Values

Steps to determine MAX RANGE, MAX LEVEL, and MIN RANGE for level calibration.

Set Minimum Range

Procedure for setting the minimum range (MinRg) for level measurement.

Set Maximum Range

Procedure for setting the maximum range (MaxRg) for level measurement.

Flow Calibration Procedures

Determine Flow Calibration Values

Steps to determine MAX RANGE, MAX LEVEL, and MIN RANGE for flow calibration.

Check Maximum Range

Verifying the maximum range with the sensor installed.

Signal and Response Settings

4-20mA Current Loop Offset

Adjusting the 4-20mA output for offsets other than zero/full scale.

Damping Configuration

Setting damping to smooth display and output in turbulent conditions.

Rejection Time (RejTime)

Suppressing false echoes from agitators, splashing, or turbulence.

Relay Configuration

Special Functions Menu

Advanced Special Functions

Sensor Mounting and Location (Tank)

Sensor Mounting Methods (Tank)

Sensor Mounting and Location (Flow)

Transducer Positioning for Flumes/Weirs

Zero Positioning for Flow Sensors

Enclosure Installation

Error and Warning Messages

Common Error Codes and Prompts

Explanation of error messages like ILLEGAL MINRG, ILLEGAL UNITS, etc.

Field Troubleshooting Guide

Display and Echo Loss Symptoms

Troubleshooting issues related to display erratic behavior and ECHO LOSS prompts.

Unit Target Pickup Issues

Faults causing incorrect target readings, like sensor aiming or buildup.

Unit Interference and Electrical Issues

Troubleshooting interference from mounting, turbulence, or electrical sources.

Wiring Problems and Non-Linearity

Maintenance and Replacement

Installation in Noisy Environments

Sources of Noise Interference

Identifying how noise spikes enter the instrument via power, sensor, or output lines.

Symptoms of RFI and Noise

Recognizing symptoms like blinking displays or erratic relay trips due to RFI.

Noise Prevention Strategies

Noise Suppression on Relay Output

Using snubbers to limit voltage spikes from relay contacts.

Product Returns and Service

Limited Warranty Information

Intrinsic Safety Option (ISB)

Alternative Power Input Options

Data Logger Functionality

Serial Communication (RS232C)

Serial Communication (RS485)

Technical Specifications

Standard Sensor PZ32T

Detailed specifications for the standard PZ32T sensor, including range, materials, and operating limits.

Calibration Worksheets

Level Mode Calibration Worksheet

Worksheet for recording calibration data for Level mode.

Flow Mode Calibration Worksheet

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