Extech Instruments SDL200 User Manual

6 SDL200-EN V2.3 07/13
Measurements and related features
Basic Thermocouple Mode
Thermocouples are connected at the top of the meter to the jacks labeled T1 through T4. Select the
thermocouple type (J, K, etc.) to match the thermocouple type used. In normal thermocouple mode
the meter will simultaneously display the temperature for thermocouples T1 through T4. Dashes are
displayed if a thermocouple is not connected or if the measurement is out of range.
Thermocouple T1-T2 Mode
To view the temperature difference between thermocouples T1 and T2, press and hold the T1-T2
button for at least 1.5 seconds. The display will now show the T1 temperature (upper left), the T2
temperature (lower left), and the difference (T1-T2) on the lower right.
Basic RTD Mode
RTD probes (850185) are connected to the jacks labeled PT1 and PT2 on the lower right side of the
meter. Select ‘Pt’ as the thermometer type in the Setup Mode. In normal RTD mode the meter will
simultaneously display the temperature for up to two RTD thermometers. T1 (for RTD PT1) is
displayed on the upper area of the LCD and T2 (for RTD input PT2) on the lower area of the LCD.
Dashes are displayed if a sensor is not connected to an input jack or if the measurement is out of
the specified range.
RTD T1-T2 Mode
To view the temperature difference between T1 (PT1) and T2 (PT2), press and hold the T1-T2
button for at least 1.5 seconds. The display will show the T1 temperature (upper display area), the
T2 temperature (lower area), and the difference (T1-T2) on the lower right.
Data Hold
To freeze a measurement on the display, press the HOLD button momentarily. The meter will emit a
beep, the reading will hold, and the HOLD icon will switch on. Press the HOLD button again to
release the display and exit the Data Hold mode returning the meter to the normal operating mode.
MAX-MIN Readings
For a given measurement session, this meter can record the highest (MAX) and the lowest (MIN)
readings for later recall.
1. Press the MAX-MIN button momentarily to access this mode of operation (REC icon appears)
2. The meter is now recording the MAX and MIN readings.
3. Press the MAX-MIN button again to view the current MAX readings (MAX icon appears). The
readings on the display are now the highest readings encountered since the REC icon was
switched on (when the MAX-MIN button was first pressed).
4. Press the MAX-MIN button again to view the current MIN readings (MIN icon appears). The
readings on the display are now the lowest readings encountered since the REC icon was
switched on (when the MAX-MIN button was first pressed).
5. To exit the MAX-MIN mode, press and hold the MAX-MIN button for at least 1.5 seconds. The
meter will beep, the REC-MAX-MIN icons will switch off, the MAX-MIN memory will clear, and
the meter will return to the normal operating mode.

Extech Instruments SDL200 Specifications

General

Type	Infrared Thermometer
Data Logging	Yes
Display	LCD
Interface	USB
Battery Type	9V battery
Response Time	500 ms
Distance to Spot Ratio	12:1
Resolution	0.1°C / 0.1°F
Emissivity	Adjustable 0.10 to 1.00

Summary

4-Channel Thermometer / Datalogger

Introduction and Meter Overview

Introduction

Provides a welcome message and overview of the Extech SDL200 thermometer.

Meter Components

Lists and describes the physical parts of the thermometer meter.

Display Elements

Identifies and explains the various elements displayed on the meter's LCD screen.

Getting Started

Power ON-OFF Operation

Instructions for powering the meter on and off.

Connecting Temperature Sensors

Guides on connecting RTD and thermocouple probes to the meter.

Setup Mode Configuration

Accessing and Basic Overview

Explains how to enter setup mode and view basic configuration settings.

Time and Logging Configuration

Procedures for setting the internal clock and configuring the data logging sampling rate.

Auto Power OFF and Beeper Settings

Configure auto power off functionality and the audible beeper.

Card and Sensor Type Configuration

Format the SD card and select temperature units and sensor types.

Measurements and Related Features

Thermocouple Measurement Modes

Details on basic thermocouple and T1-T2 difference measurements.

RTD Measurement Modes

Details on basic RTD and T1-T2 difference measurements.

Data Hold Functionality

Instructions for freezing a measurement on the display.

MAX-MIN Readings

How to record, view, and clear maximum and minimum readings.

Measurement OFFSET and Display Backlight

Thermocouple OFFSET Adjustment

Procedure to adjust the offset for thermocouple inputs.

RTD OFFSET Adjustment

Procedure to adjust the offset for RTD inputs.

Display Backlight Control

How to turn the display backlight on or off.

Datalogging and PC Interface

Data Recording Types

Overview of manual and automatic datalogging methods.

SD Card Information and Usage

Details on SD card insertion, formatting, and data storage.

Manual Datalogging Procedure

Steps for manually logging readings to the SD card.

Automatic Datalogging Procedure

Steps for initiating and managing automatic data logging.

Data Transfer and Power Options

SD Data Card to PC Transfer

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

RS-232/USB PC Interface

Information on connecting the meter to a PC via RS-232/USB.

AC Power Adapter Usage

Details on using the optional AC power adapter.

Battery Replacement and Safety

Battery Replacement Procedure

Step-by-step guide for replacing the meter's batteries.

Battery Safety Reminders

Important safety precautions regarding battery disposal and handling.

Specifications

General Specifications

Lists general technical details of the meter, including display, channels, and power.

RTD Input Electrical Specifications

Details on resolution, range, and accuracy for Pt 100 ohm RTD input.

Thermocouple Input Specifications

Thermocouple Type Specifications

Lists resolution, range, and accuracy for various thermocouple types (K, J, T, E, R, S).

Probe and Measurement Notes

Notes on supplied probe range limitations and accuracy considerations.