Extech Instruments 407907 User manual

User's Manual

RTD Thermometer

Model 407907

Shown with RTD probe*

* Probe sold separately.

407907-EN v1.5 10/13

Introduction

Congratulations on your purchase of the Heavy Duty Extech 407907 RTD Thermometer which

offers high precision and selectable 0.1oand 0.01oresolution. The LCD display provides low

battery and overload indication. Selectable temperature units °C & °F provides measurement

versatility. This meter is shipped fully tested and calibrated and with proper use will provide years

of reliable service.

Specifications

General Specifications

Display

4-1/2 digit (20,000 count) LCD display with over-range

and low battery indication

Measurement

Temperature (selectable °C & °F units)

Data Hold

Freezes displayed reading

RTD Probes (sold separately)

4-wire platinum 100RTD;

0.00385 alpha coefficient (meet DIN IEC 751)

RTD probe jack

Proprietary 4 pin circular connector

(uses Extech RTD probes –sold separately)

Sampling Time

Approximately 0.4 seconds

Memory record/recall

Meter stores Maximum and Minimum readings

Data Output

RS-232 PC Interface

Operating conditions

Temperature: 32°F to 122°F (0°C to 50°C); RH: < 80%

Power Supply

9V battery

Power consumption

15 mA DC (approx.)

Weight

0.53 lbs. (242g)

Dimensions

7.1 x 2.8 x 1.3” (180 x 72 x 32 mm)

Range Specifications

Temperature Ranges

Resolution

Accuracy (% of reading)

-199.99oto 392.00o F

0.01oF

± (0.1% + 0.4oF) *

392.0oto 1562.0oF

0.1o F

-199.99oto 199.00oC

0.01oC

± (0.1% + 0.2oC) *

200.0oto 850.0oC

0.1o C

* Probe accuracy is additional

407907-EN v1.5 10/13

Meter Description

1. RTD probe connector

2. RS232 connector

3. LCD display

4. Keypad

5. RTD probe (Sold separately)

6. Battery compartment (rear)

7. Protective holster

Operation

Connecting the optional RTD probe

Plug the optional 4-wire RTD probe(sold separately) into the jack at the top of the meter. The jack is

keyed and can only be inserted one way. Use care when inserting the probe.

Powering the meter

To power the meter, slide the OFF/ON switch to the ON position. If the display remains blank, check

the 9V battery (rear compartment). Slide the switch to the OFF position to turn the meter off.

Remove the battery if the meter is to be stored for long periods.

Selecting units of measure

Press the oF/oC button to select the desired temperature units. The LCD display will show the oCor

the oFsymbol to indicate the currently selected unit of measure.

Selecting the resolution

The meter offers 0.1oand 0.01odisplay resolution. To select the resolution use the 0.01o/0.1o

switch. The display will reflect the currently selected resolution. Use the specifications shown earlier

in this manual to determine the best resolution for the measurement range of a given application.

Taking measurements

Once the meter has been setup and a probe has been inserted in the jack at the top of the meter,

place the temperature probe in the area under test. Give the meter several seconds to stabilize.

Read the temperature measurement on the LCD. If dashes appear on the display, either the

reading is out of range or the RTD probe is not connected (or defective).

Maximum and Minimum (MAX/MIN) Record and Recall

When selected, the recording function stores the MAX/MIN readings for later recall.

1. Press the RECORD button once. The RECORD indicator will appear on the display.

2. After readings are taken, press the RECALL button to view the maximum reading. The MAX

indicator will appear on the display to inform the user that the reading now on the display is the

highest reading since the RECORD button was first pressed.

3. Press the RECALL button again to view the minimum reading. The MIN indicator will appear on

the display to inform the user that the reading now on the display is the lowest since the

RECORD button was first pressed.

4. To return to normal operation, press the RECORD button again. The RECORD, MAX, and MIN

indicators will extinguish.

407907-EN v1.5 10/13

Top View

Data Hold

To freeze a reading on the LCD, press the HOLD button. Temperature readings require several

seconds to stabilize, therefore use Data Hold only after a reading has fully stabilized. Press the

HOLD button again to return the meter to normal operation.

RS-232 PC Interface

The meter includes a built-in RS232 serial data port. This interface was designed for use with the

Extech Data Acquisition Software (Extech Part Number 407001) and enables the user to store

readings on a PC. For more information, contact Extech or refer to the manual accompanying the

software for details.

Battery Replacement

The low battery indicator (battery symbol) appears on the LCD when the 9V battery needs

replacing. Reliable readings can be obtained for several hours after the first appearance of the low

battery indicator. To replace the battery:

1. Remove the meter’s rubber protective holster.

2. Remove the battery compartment cover (back of meter) using a small coin or screwdriver.

3. Replace the 9V battery (heavy duty, alkaline type) and reinstall the cover.

4. Replace the rubber holster.

4-wire RTD input pin-out

100

407907-EN v1.5 10/13

Warranty

FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year

from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the

instrument for service during or beyond the warranty period, contact the Customer Service Department for authorization. Visit

the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is

returned. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit.

This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of

specification, improper maintenance or repair, or unauthorized modification. FLIR Systems, Inc. specifically disclaims any implied

warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or

consequential damages. FLIR’s total liability is limited to repair or replacement of the product. The warranty set forth above is

inclusive and no other warranty, whether written or oral, is expressed or implied.

Calibration, Repair, and Customer Care Services

FLIR Systems, Inc. offers repair and calibration services for the Extech Instruments products we

sell. NIST certification for most products is also provided. Call the Customer Service Department for

information on calibration services available for this product. Annual calibrations should be

performed to verify meter performance and accuracy. Technical support and general customer

service is also provided, refer to the contact information provided below.

www.extech.com

Support Lines: U.S. (877) 439-8324; International: +1 (603) 324-7800

Technical Support: Option 3; E-mail: [email protected]

Repair & Returns: Option 4; E-mail: [email protected]

Product specifications are subject to change without notice

Please visit our website for the most up-to-date information

www.extech.com

FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA

ISO 9001 Certified

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