Digi-Sense 91428-06 Instruction Manual

INSTRUCTION MANUAL

Oakton® Temp-340 Thermistor

Datalogging Thermometer

Instruction Manual

Single-Input Data Logging

Thermistor Thermometer

(Model 91428-06)

68X001353 Rev0 0717 1065DGMAN_91428-06

TABLE OF CONTENTS

1. INTRODUCTION .................................... 1

2. SAFETY PRECAUTIONS ........................ 2

3. SPECIFICATIONS .................................. 3

4. BATTERY INSTALLATION AND

REPLACEMENT ..................................... 6

5. INSERTING AND REMOVING

OPTIONAL RUBBER ARMOR ................. 8

6. ASSEMBLING OPTIONAL

HANDS-FREE ACCESORIES ................. 9

7. CONNECTING A THERMISTOR ........... 10

8. KEY FUNCTIONS ................................. 11

9. DISPLAY OVERVIEW ........................... 12

10. MEASUREMENT MODE ....................... 14

11. HOLD FUNCTON ................................. 15

12. MIN, MAX, and AVG FUNCTION ........... 15

13. DATA LOGGING .................................. 15

14. SETUP MODE ...................................... 16

15. GENERAL SETUP SCREEN ................. 17

16. CALIBRATION SCREEN ....................... 19

17. ALARMS SCREEN ............................... 21

18. DATA LOGGING SCREEN .................... 24

19. CALIBRATION REPORT SCREEN ........ 27

20. CLEAR / RESET SCREEN .................... 28

21. MAINTENANCE .................................... 29

22. CLEANING ........................................... 29

23. BATTERIES ......................................... 29

24. TROUBLESHOOTING .......................... 30

25. ACCESSORIES .................................... 31

26. WARRANTY ......................................... 32

27. PRODUCT RETURN ............................. 32

28. INNOCAL® CALIBRATION AND

REPAIR SERVICES .............................. 33

- 1 -

1. INTRODUCTION

T

his versatile handheld

in

strument

provides highly

accu

rate te

mperature

measurements

. The

instrument

is designed

for

easy oper

ation

and

includes

the follo

wing

features:

• Menu driven setup and operation

• Data logging for up to 2000 points

• USB output

• Operator selection of Celsius or

Fahrenheit scale

• Resolution of up to 0.01°C/°F

• Large backlit LED and dot-matrix

graphic LCD display

• Hold feature for temporarily retain
a reading

• Displays minimum and maximum
and average readings

• Field calibration capability

• Disabling of auto-off function

• Low-battery warning

• Bayonet connector input

- 2 -

2. SAFETY PRECAUTIONS

WARNING:

1. This instrument is designed to
accept low level signals supplied
by standard thermistors. Under
NO circumstances should the input
voltage exceed the specified
50V RMS.

2. To prevent ignition of a hazardous
atmosphere, batteries must only be
changed in an area known to be
nonhazardous.

CAUTION:

1. Do not use or store this instrument
in microwave ovens or any
abnormally hot or cold areas.

2. Weak batteries should not be left in
the instrument. Dead batteries can
leak and cause damage to unit.

DANGER:

1. Voltages present at the thermistor

may also be present at the battery
terminals. Always disconnect the
thermistor when changing batteries.

- 3 -

3. SPECIFICATIONS

Thermistor Thermometers

Type

Temperature range

400 series

–40 to 150°C

(–40 to 302°F)

Out-of-range display: OPEN
Resolution:

0.01 or 0.1 °F/°C; auto-ranging to 0.1°

above +99.99°
Accuracy:

From –40.00 to 99.99°F (–40.00 to

99.99°C): ±0.06°F (±0.03°C)

From 100.0 to 257.0°F (100.0 to 125.0°C):
±0.1°F (±0.1°C)

From 257.0 to 302.0°F (125.0 to 150.0°C):
±0.9°F (±0.5°C)

Display:
Backlit dot matrix, 50mm x 37.2mm

Data logging:

2000 points

Logging interval:

2 sec to 60 min

Min/Max/Avg function:

Yes

- 4 -

Auto off (adjustable time):

Enable/disable option available

Stability criteria:

Yes, upon stability of 5 seconds
Display update rate:

0.6 second per update

Input:
One bayonet connector

Input protection:
50V rms

Storage temperature:

–40°C to 65°C (–40°F to 149°F)

Humidity:

10% to 90% RH (noncondensing)

Battery life:
Size: Three AA, 1.5V; alkaline
Life: 400 hours continuous, typical,

(without backlighting)

Dimensions:
Without armor:

175mm (L) x 97mm (W) x 42mm (H)

With armor:

180mm (L) x 102mm (W) x 52mm (H)

Weight with batteries:
Without armor: 267g
With armor: 362g

- 5 -

Ingress protection:

Meets IEC-529 IP-54 for dust and water
resistant enclosures (probe attached)

CE Compliance:

EN61326-1/A1: 1998 (EU EMC Directive)

- 6 -

4. BATTERY INSTALLATION AND

REPLACEMENT

The total battery life without backlighting
is about 400 hours. Remaining battery
power is indicated but the battery life
indicator.

Indicator

Voltage

Cell + 3 bars
More than 4.1 V

Cell + 2 bars

More than 3.6 V

Cell + 1 bars

More than 3.0 V

Cell + empty

bars flashing

More than 2.85 V

Adaptor power

supply

Main power supply

connected

USB power

supply

USB power connected

- 7 -

Selected settings are stored in memory
and will remain in memory even after
power is turned off, or while batteries
are being replaced.

1. Before changing battery, turn
instrument off and disconnect
thermistor.

2. Loosen screw and lift battery cover
off back of case.

3. Remove the three AA batteries.

4. Insert three new batteries observing
polarity.

5.

Install cover and tighten screw.

- 8 -

5. INSERTING AND REMOVING

RUBBER ARMOR

1. To insert thermometer into the
optional rubber armor, slide in from
the top of meter before pushing the
bottom edges of meter down to set
it into position. Lift up the stand at
the back of meter for bench top
applications if necessary.

2. To remove thermometer from armor,
push out from the bottom edges of
meter until it is completely out of
boot.

- 9 -

6. ASSEMBLING OPTIONAL

HANDS-FREE ACCESORIES

You can use the optional magnets and
strap in the Hands-Free Kit accessories
for hands-free operations.