Extech 407907 Operating Manual

User's Manual

RTD Thermometer
Model 407907

Shown with RTD probe*
* Probe sold separately.

Introduction

Congratulations on your purchase of the Heavy Duty Extech 407907 RTD Thermometer
which offers high precision and selectable 0.1
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.

o

and 0.01o resolution. The LCD display

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
workmanship for one year from date of shipment (a six month limited warranty applies on 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 at [phone] ext. 210 for
authorization or visit our website at www.extech.com (click on Contact Extech and go to Service
Department to request an RA number). A Return Authorization (RA) number must be issued before
any product is returned to Extech. 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. Extech 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. Extech'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.

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)

RTD probe jack Proprietary 4 pin circular connector

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 0.62 lbs. (285g)
Dimensions

4-wire platinum 100Ω RTD;

0.00385 alpha coefficient (meet DIN IEC 751)

(uses Extech RTD probes – sold separately)

7.1 x 2.8 x 1.3” (180 x 72 x 32 mm)

Range Specifications

Temperature Ranges

o

-199.99o to 392.00o F 0.01o F

F

o

C

o

to 1562.0oF 0.1o F

392.0

-199.99o to 199.00oC 0.01o C

o

to 850.0oC 0.1o C

200.0

Resolution Accuracy (% of reading)

o

± (0.1% + 0.4

± (0.1% + 0.2

2

F) *

o

C) *

* Probe accuracy is additional

Model 407907 V 1.3 01/06