Extech Instruments HD200 User manual

USER GUIDE

Differential Thermometer Datalogger

Model HD200

HD200-en-GB_V2.3 4/15

Introduction

Congratulations on your purchase of the Extech HD200 Differential Thermometer Datalogger. The

HD200 supports differential temperature measurements using dual Type K thermocouple probe

inputs and provides selectable units of °C, °F or °K. The large backlit LCD displays a versatile

combination of readings: T1, T2, T3, T1-T2, T1-T3, T2-T3, plus MAX-MIN-AVG readings.

The electronic offset feature permits compensation adjustment for thermocouple errors and to

maximize overall accuracy.

The HD200 can also make non-contact temperature measurements with the supplied IR

thermometer probe.

The HD200 datalogger can store 18,000 measurement readings (for each channel) in the meter’s

internal memory. Stored readings can later be transferred to a PC using the supplied PC USB

interface kit. Real-time meter-to-PC logging is also supported.

This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable

service.

Safety

Please read the safety and operational instructions before using this device.

WARNING

To avoid electrical shock or instrument damage, do not apply voltage exceeding the maximums

specified.

WARNING

To avoid damage or burns, do not make temperature measurement in microwave ovens.

WARNING

Do not use the meter in any explosive atmosphere.

CAUTION

Repeated flexing can break the thermocouple leads. To prolong lead life, avoid sharp bends in the

leads, especially near the connector.

This symbol on the instrument indicates that the operator must refer to an explanation in this

manual.

Double insulation

IR Safety Notes

Remove the battery if meter is to be stored for longer than 60 days.

Use extreme caution when the laser pointer beam is on

Do not point the beam toward anyone's eye or allow the beam to strike the eye from a

reflective surface

Do not use the laser near explosive gases or in other potentially

explosive areas

HD200-en-GB_V2.3 4/15

Description

Meter Description

1. Thermocouple inputs

2. PC USB interface input

3. IR probe input jack

4. Up arrow button

5. SETUP & Display backlight button

6. Down arrow and Record button

7. Temperature units select button

8. MAX-MIN button

9. Display configuration button

10. LCD Display

11. ENTER button

12. Battery compartment & Tripod mount (rear)

13. Display HOLD button

14. Power button

Note: Description of IR sensor contained in later section.

Display Description

1. Thermocouple type (Icon flashes when the meter is

recording)

2. IR temperature (display flashes when the meter

recording)

3. Data Hold mode (readings are frozen on display)

4. Appears when meter is in the SETUP mode

5. Primary Display: T1, T2, T3 , T1-T2,T1-T3,or T2-T3

reading.

6. Secondary Display: MAX, MIN, AVG, offset,T1, T2 , or T3

reading.

7. Temperature unit of measure

8. Third display. Elapsed timer or T1, T2, T3 reading

9. Low battery icon

10. Timer

11. MAX, MIN, AVG display mode icons

HD200-en-GB_V2.3 4/15

Operation

The Basics

1. Press to turn the thermometer on. Press and hold the button for 3 seconds to turn the

meter off.

2. Press MAX/MIN to record and step through the maximum, minimum, and average readings for

the T1 and T2 inputs (does not apply for the T3 IR input). When active, the display shows the

maximum, minimum, or average of the logged readings and the elapsed time. To exit the

MIN/MAX/AVG mode press and hold the MAX/MIN button for 3 seconds.

3. Press °C·°F·°K to switch between Celsius (°C), Fahrenheit (°F), and Kelvin (°K).

4. Press HOLD to freeze or unfreeze the displayed readings.

5. Press DIF/T1·T2·T3to scroll through display combinations: T1, T2, T3 and T1-T2, T1-T2, T2-T3

(differential temperature measurement) in the primary, secondary and third display.

6. Press the Setup/button to turn on the backlight. Press it again to turn off the backlight.

7. Press and hold the Setup/button for 5 seconds to enter or exit the Setup mode. Press ▲to

scroll to a Setup option. (see "Changing Setup Options.")

8. Press REC/▼to start or stop recording. If in the Setup mode, use this button to scroll to the

Setup option you want to change. Press REC/▼to decrease the displayed setting.

9. Press ENTER to enter a Setup option. Press ENTER again to store the displayed setting in

memory.

Using the thermocouple (s)

1. Plug the thermocouple(s) into the T1or T2 input connector(s).

2. Press to turn on the thermometer. After 1 second the thermometer displays the reading. If

no thermocouple is plugged into the selected input or the thermocouple is "open," the display

shows "- - - -".

Using the supplied IR (Infrared) Thermometer Probe

Plug the output of the remote IR probe into the T3 (IR input) meter jack (see diagram), “T3 - - - -” will

appear on screen. If the IR probe is not connected, “T3 - - - -” will not

appear.

Press the external probe’s “SCAN” button to take and display a

reading. Use the laser pointer to improve target aim.

While the SCAN button is held down, the readings change as the user

scans various surfaces. When the button is released the display is

held for approx. 7 seconds and the meter then returns to normal

operation.

HD200-en-GB_V2.3 4/15

IR Description

1. Laser Pointer

2. IR sensor

3. Lo Battery led

4. ON/Scan button

5. Cable

IR (Infrared) Thermometer Measurement Considerations

The object under test should be larger than the spot (target) size calculated by the field of view

diagram.

If the surface of the object under test is covered with frost, oil, grime, etc., clean before taking

measurements.

If an object's surface is highly reflective, apply masking tape or flat black paint to the surface

before measuring.

The meter may not make accurate measurements through transparent surfaces such as glass.

Steam, dust, smoke, etc. can obscure measurements.

The meter compensates for deviations in ambient temperature. It can, however, take up to 30

minutes for the meter to adjust to extremely wide ambient temperature changes.

To find a hot spot, aim the meter outside the area of interest then scan across (in an up and

down motion) until the hot spot is located.

IR measurements cannot be made through glass.

IR (Infrared) Thermometer Field of View

The meter’s field of view is 8:1. For example, if the meter is 16 inches from the target (spot), the

diameter of the target must be at least 2 inches.

Note that measurements should normally be made less than 2 feet from the target. The meter can

measure from further distances but the measurement may be affected by external sources of light.

In addition, the spot size may be so large that it encompasses surface areas not intended to be

measured.

HD200-en-GB_V2.3 4/15

Setup Option Mode

Entering and Changing a Setup Options

1. Press and hold the Setup button for 3 seconds to enter the Setup mode.

“SETUP” will appear in the upper right-hand corner of the LCD

2. Press

▲or ▼to scroll to the desired setup option

3. Press ENTER to begin editing the selected option.

4. Press

▲or ▼to change to the desired setting.

5. Press ENTER to store the new setting in memory and step to the next option

6. Press and hold the Setup button for 3 seconds to exit the Setup mode

Note: Setup is disabled in MIN MAX/AVG or REC mode.

Offset (for T1, T2, or T3)

The primary display shows the actual temperature plus the offset; the secondary display shows only

the offset value. Individual offsets for T1, T2 and T3 can be stored for later recall.

Auto Power Off mode (SLP)

1. The default mode is Sleep Mode ON (the meter will automatically shut off after 20 minutes of

inactivity).

2. Press

▲or ▼to scroll to the “SLP” page.

3. Press ENTER to show the current setting (ON or OFF).

4. Press

▲or ▼to change the setting. Press ENTER to store the new setting in memory. On

(sleep mode on) or 0FF (sleep mode off).

Time Setting (tiE)

1. Display the time.The primary display shows the year. The secondary display shows the month

and the day, the third display shows the hours and minutes. Press ENTER to exit the time

setting option without making changes.

2. Set the time. The order is year--- month ----day---- hours--- minutes. Use °C·°F·°K to select a

digit group. Use the ▲or ▼buttons to change the setting. Press ENTER to store the new

setting in memory.

Sample Rate (rAt)

The third display shows the datalogger sample rate. The default sample rate is 1 second. The third

display show “0 0 0 1”. The order is minutes/seconds. Press °C·°F·°K to toggle between minutes

and seconds. The flashing digits indicate the digits ready to be edited. Press ▲or ▼to change the

sample rate. Press ENTER to store the new setting in memory.

Erase the Datalogger Memory (CLR)

To clear the memory, enter the CLR setup mode, press ▲or ▼until the display shows the

confirmation screen “SURE YES” and press ENTER to clear the memory.

Display Option Description

T1 T1 Offset Adjust T! offset value

T2 T2 Offset Adjust T2 offset value

T3 T3 Offset Adjust T3 offset value

SLP Sleep Mode ON (mode on) or OFF (sleep mode off)

tiE Time setting Check the time or Set the time

rAt Sample rate Set the datalogging sample interval

CLR Clear Clear the datalogger memory

HD200-en-GB_V2.3 4/15

Displaying Temperature units

1. Press UNITS to select the desired temperature units.

2. Touch the thermocouple(s) to the object under test. The temperature reading appears in the

primary display.

Notes:

The display shows "- - - -" when a thermocouple is not connected.

The display shows OL (overload) when the temperature being measured is outside the

thermocouple or meter range.

Holding the Displayed Readings

1. Press HOLD to freeze the readings on the display .The display shows “HOLD”.

2. Press DIF/T1·T2·T3to scroll through T1, T2, T3, T1-T2, T1-T3, or T2-T3 readings for the

primary or secondary display.

3. Press HOLD again to turn off the HOLD function.

Viewing the MIN, MAX, and AVG Readings

1. Press MAX/MIN to step through the maximum (MAX), minimum (MIN), or the average (AVG)

readings. The elapsed time since entering MIN MAX mode, or the time at which the minimum

or maximum occurred appears on the display.

2. Press MAX/MIN button for 3 seconds to exit the MIN MAX mode.

Note: Max/Min/Ave applies to the T1 and T2 inputs only.

Datalogging

1. Set the desired sampling interval as described in the Setup Mode.

2. Press the REC/▼button to start recording. The “TYPE K” and “IR TEMP” indicators will flash

on at the set sample rate when the meter is datalogging.

3. Press the REC/▼button to stop recording.

The supplied software allows the user to transfer stored data to a PC. Refer to the separate

software instructions on the supplied software disk for details.

Using the Offset Function to Adjust for Probe Errors

Use the offset option in Setup Mode to adjust the thermometer’s readings to compensate for errors

in a specific thermocouple or IR temperature. The allowable adjustment range is ± 5.0 0C or ± 9.0

0F.

1. Plug the thermocouple into the input connector.

2. Place the thermocouple in a known, stable temperature environment such as an ice bath or dry

well calibrator.

3. Allow the readings to stabilize.

4. In Setup change the offset until the primary reading matches the calibration temperature.

HD200-en-GB_V2.3 4/15

Battery Replacement

1. Turn off the thermometer.

2. Slide off the meter’s rear panel.

3. Replace the battery.

4. Secure the rear panel.

Never dispose of used batteries or rechargeable batteries in household waste.

As consumers, users are legally required to take used batteries to appropriate

collection sites, the retail store where the batteries were purchased, or wherever

batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end-of-

life devices to a designated collection point for the disposal of electrical and electronic equipment.

Other Battery Safety Reminders

oNever dispose of batteries in a fire. Batteries may explode or leak.

oNever mix battery types. Always install new batteries of the same type.

USB PC Software and Interface

The HD200 is equipped with a communication jack on its upper left side. The supplied

communications cable connects to this jack and to a USB port on a PC. The supplied software

allows the user to view and save readings to the PC. Instructions for use and features are detailed

in the supplied software HELP utility.

HD200-en-GB_V2.3 4/15

Specifications

General Specifications

Display Three line display multi-function LCD

IR Field of View 8:1 distance to spot ratio

Datalogger memory Over 18000 readings per input channel

Memory Sample Rate Adjustable, 1per second to 1 per 59min 59sec

Over range indication "-------" appears on the LCD

Open input indication "-------" appears on the LCD

Low battery indication Battery symbol appears on the LCD

Power supply 9V Battery

Operating Temperature 0 to 40oC (32 to 104oF)

Operating Humidity 10 to 80% RH

Storage Temperature -10 to 60oC (14 to 140oF)

Storage Humidity 10 to 75% RH

Dimensions 201 x 75 x 50mm (7.9 x 2.9 x 1.9")

Weight Approx. 280g (9.8oz.) with battery

Function Range Resolution Accuracy

T1, T2

(Type K)

-100°C to 1372°C

-148°F to 2501°F <1000°; 0.1°C/F

>1000°; 1°C/F

± (0.15%rgd+10C/1.80F)

-200°C to -100°C

-328°F to -148°F ± (0. 5%rgd+20C/3.60F)

(IR)

-30°C to 550°C

-22°F to 1022°F 1°C/F ± (2%rgd+20C/3.60F)

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