Extech Instruments SDL350 User Manual

9 SDL350-en-GB_V1.5 6/16
Set the Temperature Units of Measure (°C or °F)
1. Access the t-CF parameter.
2. Use the arrow keys to select °C or °F.
3. Press ENTER to confirm setting.
4. Press and hold the SET key for at least 1.5 seconds to exit to the normal operation mode (or
simply wait 7 seconds for the meter to automatically switch to the normal operating mode).
Set the Temperature Thermocouple Type (J or K)
1. Access the tYPE parameter.
2. Use the arrow keys to select J or K.
3. Press ENTER to confirm setting.
4. Press and hold the SET key for at least 1.5 seconds to exit to the normal operation mode (or
simply wait 7 seconds for the meter to automatically switch to the normal operating mode).
Set the Air Flow Volume measurement units to CFM (F-US) or CMM (F-EU)
1. Access the SET F-US / F-EU parameter.
2. Use the arrow keys to select US or EU. US represents CFM (cubic feet per minute) and EU
represents CMM (cubic meters per minute)
3. Press ENTER to confirm setting.
4. Press and hold the SET key for at least 1.5 seconds to exit to the normal operation mode (or
simply wait 7 seconds for the meter to automatically switch to the normal operating mode).
Set the Area value for the air duct under test (for Air Flow Volume measurements only)
1. Access the ArEA parameter.
2. Use the arrow keys set the area of the duct (the equation L * W is used for rectangular ducts;
3.14 * R
2
is used for circular ducts). Note that the value must be set in square feet or square
meters; therefore if the measurement is made in square inches, the area value must be
converted to square feet. The setting range is 0.01 to 322.93.
3. Press ENTER to confirm setting.
4. Press and hold the SET key for at least 1.5 seconds to exit to the normal operation mode (or
simply wait 7 seconds for the meter to automatically switch to the normal operating mode).
Battery Replacement and Disposal
When the low battery icon appears on the LCD, the batteries must be replaced. Several hours
of accurate readings are still possible in this condition; however batteries should be replaced as
soon as possible:
1. Remove the two (2) Phillips screws from the rear of the meter (directly above the top of the tilt
stand).
2. Remove and safely place the battery compartment and screws where they will not be damaged
or lost.
3. Replace the six (6) 1.5V ‘AA’ batteries observing polarity.
4. Replace the battery compartment cover with the two (2) Phillips screws.
All EU users are legally bound by the Battery Ordinance to return all used batteries to
community collection points or wherever batteries / accumulators are sold!
Disposal in household trash or refuse is prohibited!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
Other Battery Safety Reminders
 Never dispose of batteries in a fire. Batteries may explode or leak.
 Never mix battery types. Always install new batteries of the same type.

Extech Instruments SDL350 Specifications

General

Model	SDL350
Category	Multimeter
Brand	Extech Instruments
Display Type	LCD
Max Voltage Measurement	1000V
Max Current Measurement	10A
Data Logging	Yes
Diode Test	Yes
Continuity Test	Yes
Data Hold	Yes
Auto Power Off	Yes
Frequency Measurement	10MHz
Temperature Measurement	-40°C to 1000°C
DC Voltage Range	1000V
AC Voltage Range	750V
DC Current Range	10A
AC Current Range	10A
Resistance Range	40MΩ
Capacitance Range	100µF
Frequency Range	10MHz
Safety Rating	CAT III 1000V

Summary

Introduction

Safety

International Safety Symbols

Symbol indicating the need to refer to the manual for further information.

Description

Meter and Hot Wire Probe Components

Detailed list and description of the meter's parts and the hot wire probe.

Hot Wire Probe Top Details

Specifics about the hot wire probe tip, including sensor orientation and protective cover.

Operation

Meter Functions and Modes

Explains the meter's three operating modes: Air Velocity, Thermocouple, and Air Volume.

Air Velocity Plus Temperature Mode

Instructions for using the meter to measure air velocity and temperature.

Changing Air Velocity Units of Measure

Procedure for selecting measurement units for air velocity (m/s, FPM, Km/h, etc.).

Thermocouple Temperature Mode

Instructions for measuring temperature using Type K or J thermocouples.

Air Flow (Volume CFM/CMM) Measurement

Guide for measuring air volume using CFM or CMM units.

Data Hold Functionality

How to freeze the displayed measurement value.

MAX-MIN Readings

How to record and recall maximum and minimum measurement values.

Display Backlight Control

Instructions for turning the display backlight on or off.

System Reset Procedure

Steps to reset the meter if keys become inoperable or display freezes.

AC Power Adaptor Usage

Information on connecting and using the optional AC power adaptor.

Datalogger Functionality

Overview of the meter's data logging capabilities.

SD Card Information

Details on SD card compatibility, insertion, and formatting for datalogging.

Manual Datalogging

Procedure for manually logging readings to an SD card.

Automatic Datalogging

Instructions for automatically logging data at specified intervals.

SD Data Card to PC Transfer

Steps for transferring logged data from the SD card to a computer.

RS-232/USB PC Interface

Setup Mode

Accessing the Setup Mode

How to enter and navigate the meter's setup menu.

Setting the Clock Time

Procedure for setting the date and time on the meter.

Setting Datalogger Sampling Time

Configuring the interval for automatic data logging.

Auto Power OFF Feature Control

Enabling or disabling the automatic power-off function.

Beeper Sound ON/OFF Setting

Controlling the audible beeper for operations.

Numerical Format Setting (Decimal/Comma)

Choosing between USA (decimal) and European (comma) number formats.

SD Card Formatting

Instructions for formatting an SD card for use with the datalogger.

Temperature Units of Measure (°C/°F)

Selecting Celsius or Fahrenheit for temperature readings.

Temperature Thermocouple Type (J/K)

Specifying the type of thermocouple (J or K) being used.

Air Flow Volume Units (CFM/CMM)

Setting units for air volume measurement (CFM or CMM).

Air Duct Area Value Setting

Inputting duct area for accurate Air Flow (Volume) calculations.

Battery Replacement and Disposal

Battery Safety Reminders

Important safety guidelines regarding battery handling and disposal.

Specifications

General Specifications

Overview of the meter's general technical characteristics and features.

Electrical Specifications

Air Velocity Specifications

Detailed electrical specifications for air velocity measurements.

Air Temperature Specifications (Built-in)

Electrical specs for the built-in thermistor temperature sensor.

Air Flow (CFM/CMM) Volume Specifications

Electrical specifications for air flow volume measurements.

Air Temperature Specifications (Thermocouple)

Electrical specs for thermocouple temperature measurements.