General DT61 User manual

HEAVY-DUTY DIGITAL

THERMOCOUPLE

THERMOMETERS

USER’S MANUAL

Plea e read thi manual carefully and thoroughly before u ing thi product.

DT61

Single channel

DT62

Two channel

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TABLE OF CONTENTS

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . 2 –3

What’s in the Package . . . . . . . . . . . . . . . . . . . . . . 3

Quick Start Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Product Overview . . . . . . . . . . . . . . . . . . . . . . . 3 –7

Setup Instructions . . . . . . . . . . . . . . . . . . . . . 7 – 11

Install Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Perform Setup Procedure . . . . . . . . . . . . . 7 – 11

Install Thermocouple(s) . . . . . . . . . . . . . . . . . 11

Operating Instructions . . . . . . . . . . . . . . . . . 12 – 13

Monitoring Temperature(s) in Real Time . 12 – 13

Displaying Min/Max/Avg Temperatures . . . . . 13

Specifications . . . . . . . . . . . . . . . . . . . . . . . 13 – 14

Operating & Maintenance Tips . . . . . . . . . . . . . . 14

Warranty Information . . . . . . . . . . . . . . . . . . . . . 15

Return for Repair Policy . . . . . . . . . . . . . . . . . . . . 16

Manuel de ’utilisateur (en Français) . . . . . 17 – 34

Manual del Usuario (en Español) . . . . . . . . 35 – 51

KEY FEATURES

• Min/Max/Avg memory

• Compatible with “K”, “J”, “T” and “E” type

thermocouples

• Displays difference between thermocouple

readings T1-T2 (DT62 only)

• 2.4 in. (61mm) diagonal LCD with dual

temperature readouts + relative time clock readout

• Adjustable relative time clock enables resetting

measurement timeline

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• Choice of three temperature units: °C, ° and °K

• Data hold button

• Manual temperature compensation (offset) for

thermocouple(s)

• Adjustable Auto Power Off trigger

• Powered by “9V” battery

• 3 year limited warranty

WHAT’S IN THE PACKAGE

Both models come in a white box with this user’s

manual. The DT61 includes one “K” type bead

thermocouple probe with a measurement range of

-40° to 572° (-40° to 300°C). The DT62 comes with

two “K” type probes with the same range.

A variety of other “K” type thermocouple probes

with different sensor types, form factors and

temperature ranges are available from General. Visit

www.generaltools.com and enter “K type probe” in

the SEARCH box.

QUICK START GUIDE

1. Obtain and install a “9V” battery.

2. Plug included “K” type thermocouple probe(s) into

the top jack(s).

3. Press the POWER button.

PRODUCT OVERVIEW

igure 1 shows all of the controls, indicators and

physical features of the DT61 and DT62, including

the differences between their keypads and jack

configurations. igure 2 shows all possible

indications on the LCD. amiliarize yourself with the

positions and functions of all controls, indicators and

physical features before moving on to the Setup

Instructions and Operating Instructions.

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DT61 Keypad DT62 Keypad

1. Keypad

2. T1 jack for spade lug thermocouple

3. T2 jack for spade lug thermocouple (DT62 only)

4. Ambient temperature sensor

5. LCD

6. lip-up stand (on back)

7. Battery compartment (on back)

T2 ++T1– –

POWER

HOLD

EENNTTEERR

SETUP

MAX

MIN

AVG

TC TYPE

C°/F°K

POWER

HOLD

EENNTTEERR

SETUP

MAX

MIN

AVG

T1/T2/T1-T2

C°/F°K

DT61

햶

햲

햸

햳

햷

햴햵

TOP

Fig. 1. The controls,

display and physical

features of the DT61

and DT62

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POWER button. Powers thermometer on and off.

TC TYPE button (DT61 only). Selects thermocouple

type (“K”, “J”, “T” or “E”)

T1/T2/T1-T2 button (DT62 only). Selects one of four

display options:

a) T1 on primary readout and T2 on secondary

readout

b) T2 on primary readout and T1 on secondary

readout

c) T1-T2 on primary readout and T1 on secondary

readout

d) T1-T2 on primary readout and T2 on secondary

readout

°C/°F/K button. Selects temperature unit of primary

and secondary readouts

MAX/AVG/MIN button. Pressed briefly, selects

whether maximum, minimum or average value of

measurement session (since thermometer was

powered on) is displayed on primary readout.

Pressed and held, exits Max/Min/Avg display mode

and resumes real-time display mode.

HO D (ENTER) button:

• On DT61, pressing HO D button briefly “freezes”

T1 value on primary readout.

• On DT62, pressing HO D briefly freezes T1, T2 or

T1-T2 value on primary readout and T1 or T2

value on secondary readout (values held are

determined by setting of T1/T2/T1-T2 button).

• On DT61 and DT62, ENTER button is only used

to set system time format.

SETUP button. Initiates 7-step setup procedure

(see p. 7)

왖and 왔buttons. On DT61 and DT62, used to

enable/disable ambient temperature compensation

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and change values of temperature compensation,

Auto Power Off triggering time, relative time clock

and local power line frequency. On DT62, also used

to select thermocouple type (during Step 1 of Setup

procedure).

Fig. 2. All possible display indications

1. Auto Power Off enabled indicator

2. Low battery icon

3. OFFSET. Indicates that primary readout is showing

thermocouple temperature compensation value

4. SETUP. lashes during setup procedure

5. READ. Not used on DT61 or DT62

6. REC. Not used on DT61 or DT62

7. HO D. Indicates that primary readout is showing

held value

8. K, °F, °C. Primary readout temperature unit

9. Primary readout

10. MAX, MIN, AVG. Indicates which value is shown

on primary readout

11. MEM. Not used on DT61 or DT62

12. K, °F, °C. Secondary readout temperature unit

13. Secondary readout

14. USB. Not used on DT61 or DT62

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15. Relative time clock readout

16. min:sec. Relative time units

17. CA . lashes during calibration

18. INTERVA . Not used on DT61 or DT62

19. hour:min. Relative time units

20. Type KJTERSN. Indicates selected thermocouple

type

SETUP INSTRUCTIONS

INSTALL BATTERY

To open the battery compartment, turn the

thermometer over and lift the flip-up stand ( ig. 1,

Callout 6) to gain access to the battery compartment

(Callout 7). Remove the single Philips-head screw

securing the battery compartment cover. Set the

cover and screw aside. Obtain a “9V” battery and

install it in the compartment observing the polarity

markings inside. Close the battery compartment by

replacing its cover and securing it with the screw.

PERFORM SETUP PROCEDURE

The setup procedures for the DT61 and DT62 are

identical, with one exception: Step 2—adjusting the

temperature compensation (offset) value—must be

performed twice, for the thermocouples of both

channels.

1. Set TC type 2. Set TC

offset

5. Set power

line

frequency

4. Set relative

time clock

6. Enable/

disable

ambient

temperature

compensation

3. Set APO

trigger

7. Enter

Calibration

mode

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To enter Setup mode, press the SETUP button once.

Doing so will clear all three readouts and cause the

word SETUP to begin flashing on the top line of the

LCD. SETUP will continue to flash until all steps of

the setup procedure have been completed.

Note: It’s important to understand that you must

complete the entire 7-step Setup procedure

shown above each time you initiate it. If you

power off the thermometer during an interim

step, none of your settings or changes will be

saved.

Step 1 of the procedure enables you to configure the

thermometer for the type of thermocouple to be

used. DT62 users: You cannot plug two different

types of thermocouple into the T1 and T2 jacks on

the top of the unit ( ig. 1, Callouts 2 and 3). You must

use two probes of the same type.

By default, the DT61 and DT62 are configured to

work with “K” type thermocouples. To use a “J”, “T”

or “E” thermocouple, press the 왖or 왔button until

the correct letter replaces Kat the right of TYPE on

the left side of the LCD.

On the DT61, you can also change the thermocouple

type by pressing the TC TYPE button repeatedly with

the thermometer in real-time measurement mode.

After you complete Step 1, press the SETUP button

again to initiate Step 2. During this step, the word

OFFSET appears on the top line of the LCD, with the

term T1 in the upper left corner.

Step 2 of the procedure enables you to set the

amount of temperature compensation (offset) to be

applied to the Channel 1 (T1) thermocouple. Pressing

the 왖button applies a positive offset, and pressing

the 왔button applies a negative offset. Each press of

either button adds 0.1°C of compensation to the

amount shown on the primary readout. The

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maximum amount of temperature compensation

allowable is ±6°C. You cannot apply temperature

compensation using ahrenheit or Kelvin units. After

applying the desired amount of temperature

compensation to T1, press the SETUP button again

to save your setting and proceed to the next step.

On the DT62, the next step is Step 2A—setting the

amount of temperature compensation (offset) to be

applied to the Channel 2 (T2) thermocouple. After

using the same procedure as before to apply the

desired amount of temperature compensation to T2,

press the SETUP button again to proceed to Step 3.

Note: Changing thermocouple t pe automaticall

restores offset value(s) to 0.0.

Step 3 enables you to change the triggering time of

the Auto Power Off (APO) function from its default

value of 30 minutes. During Step 3, the primary

readout shows the term P– and the secondary

readout shows the current value of the APO

triggering time (the period of time during which no

front-panel buttons are pressed).

Each press of the 왖button increases the APO

triggering time by 1 minute, and each press of the

왔button decreases it by 1 minute. The maximum

APO triggering time is 60 minutes. If the APO

triggering time has been decreased to 5 minutes, the

next press of the 왔button causes the term oFF to

appear on the secondary readout. Disabling the APO

function in this way also causes the clock icon in the

upper left corner of the LCD ( ig. 2, Callout 1) to

disappear. The missing clock icon is a reminder that

the thermometer will not automatically power itself

off after an extended period of inactivity. With APO

disabled, be aware that leaving the thermometer

unattended for an extended period of time risks

draining the battery.

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After adjusting the APO triggering time, press the

SETUP button again to proceed to Step 4.

Step 4 enables you to reset the relative time clock to

a time other the default value: how long it has been

since the thermometer was powered on. The usual

reason to change the value is to establish a new

“zero” for the measurement timeline following any

change that does not involve powering the

thermometer off.

At the beginning of Step 4, the term S - t appears on

the primary readout with 00:00 (hours and minutes)

showing on the relative time clock readout ( ig. 2,

Callout 15). To switch the display to show minutes

and seconds, press the HO D (ENTER) button. The

relative clock setting can be adjusted to any value

between 0 and 24 hours, with 1-second resolution.

Each press of the 왖button increases the setting

by 1 minute or 1 second, and each press of the

왔button decreases it by 1 minute or 1 second.

You can press and hold either button to make a large

change quickly.

After adjusting the relative time clock, press the

SETUP button again to proceed to Step 5.

Step 5 enables you to compensate for thermocouple

measurement errors caused by nearby power lines.

By default, the thermometer automatically

compensates for the effects of electric power

transmission and distribution at a frequency of 60Hz.

Upon entering Step 5, the thermometer shows the

term inE on the primary readout and 60H on the

secondary readout. Press either the 왖or 왔button

to change 60H to 50H if your local power grid

operates at 50Hz.

After adjusting the relative time clock, press the

SETUP button again to proceed to Step 6.

DT61-DT62 Ma ual_RRFINAL_EFS_111014_awb 11/10/14 12:04 PM Page 10

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