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TESTO 557s User Manual

TESTO 557s
76 pages
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testo 550s / testo 557s digital manifold
Instruction manual

Table of Contents

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TESTO 557s Specifications

General IconGeneral
Measurement Channels4
ConnectivityBluetooth
Protection ClassIP54
Pressure Measurement Accuracy± 0.5 % of full scale
Temperature Measurement Range-58 to 302 °F
DisplayLCD
Temperature Measurement Accuracy±0.9 °F
Battery LifeUp to 250 hours
Data TransferVia Bluetooth to app
Connections3 x 7/16" UNF
Operating Temperature-10 to 50 °C
Storage Temperature-20 to 60 °C
Measurement ParametersPressure, temperature, vacuum
WeightApprox. 1.2 kg
Pressure Measurement Range-1 to 60 bar

Summary

2 Safety and disposal

5 Use

7 First steps

7.1 Inserting (rechargeable) batteries

Explains the process of installing batteries for instrument power.

7.2 Switching the instrument on and off

Describes the procedures for turning the instrument on and off.

7.3 Setup wizard

Guides users through the initial setup configuration via the wizard.

8 Using the product

8.1 Preparing for measurement

Covers essential preparation steps before starting any measurement.

8.1.1 Operating the valve positioners

Details the correct method for operating the valve positioners on the manifold.

8.2 Measuring mode

Introduces the various measurement modes available on the instrument.

8.2.1 Refrigeration

Describes the Refrigeration application for determining system measuring values.

8.2.2 Evacuation

Explains how to remove foreign gases and moisture from refrigeration circuits.

8.2.3 Pressure Leak Test

Details how to perform a temperature-compensated leak tightness test on systems.

8.2.4 Target Superheat

Explains how to calculate target superheat using the app and smart probes.

8.2.5 Compressor Test (DLT)

Describes the Compressor Test (DLT) mode requiring three temperature probes.

8.2.6 Delta T

Explains how to measure temperature differences (Delta T) using two probes.

8.3 Bluetooth

8.4 Settings

9 Smart App

9.3 Measurement menu

Lists the available measurement programs and applications within the Smart App.

9.3.2 Refrigeration

Covers the Refrigeration application within the app for system measurements.

9.3.3 Target superheat

Explains how to calculate target superheat using the app and smart probes.

9.3.4 System Leak Test

Guides users on performing a temperature-compensated leak test using the app.

9.3.5 Evacuation

Details the Evacuation application for removing moisture and gases from refrigeration circuits.

10 Maintenance

10.1 Calibration

Explains the calibration process and recommendations for ensuring accuracy.

10.5 Ensuring measuring accuracy

Offers advice on maintaining the instrument's measuring accuracy.

11 Technical data

12 Tips and assistance

12.2 Error Codes

Lists and explains error codes displayed by the instrument.

12.2.1 Main screen

Explains error codes specifically shown on the main screen.

12.2.2 Status view

Explains error codes that appear in the instrument's status view.

13 Support

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