Digi-Sense 91428-08 Instruction Manual
Instruction Manual
Single-Input Data Logging
RTD Thermometer
(Model 91428-08)
68X001354 Rev 0 0717 1065DGMAN_91428-08
1. INTRODUCTION ............................... 1
2. SAFETY PRECAUTIONS .................. 2
3. SPECIFICATIONS ............................ 3
4. BATTERY INSTALLATION AND
REPLACEMENT ................................ 6
5. INSERTING AND REMOVING
OPTIONAL RUBBER ARMOR .......... 7
6. ASSEMBLING OPTIONAL
HANDS-FREE ACCESORIES
........... 8
7. CONNECTING A RTD ....................... 9
8. KEY FUNCTIONS ........................... 10
9. DISPLAY OVERVIEW ..................... 11
10. MEASUREMENT MODE ................. 13
11. HOLD FUNCTON ............................ 14
12. MIN, MAX, AND AVG FUNCTION ... 14
13. DATA LOGGING ............................. 14
14. SETUP MODE ................................. 15
15. GENERAL SETUP SCREEN .......... 16
16. CALIBRATION SCREEN
................. 18
17. ALARMS SCREEN .......................... 20
18. DATA LOGGING SCREEN ............. 25
19. CALIBRATION REPORT SCREEN
. 26
20. CLEAR/RESET SCREEN ............... 27
21. MAINTENANCE
............................... 28
22. CLEANING
...................................... 28
23. BATTERIES
..................................... 28
24. TROUBLESHOOTING ..................... 29
25. ACCESSORIES
............................... 30
26. WARRANTY
.................................... 31
27. PRODUCT RETURN
....................... 31
28. INNOCAL® CALIBRATION AND
REPAIR SERVICES ........................ 32
TABLE OF CONTENTS
- 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 LCD and dot-matrix
graphic LCD display
• Hold feature for temporarily retain a
reading
• Displays minimum, maximum and
average readings
• Field calibration capability
• Disabling of Auto-Off function
• Low-battery warning
• Three-pin DIN connector input
• Operates with a wide selection of
RTD probes
- 2 -
2. SAFETY PRECAUTIONS
WARNING:
1. This instrument is designed to accept
low level signals supplied by standard
RTDs. 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 RTD may
also be present at the battery
terminals. Always disconnect the
RTD when changing batteries.
- 3 -
3. SPECIFICATIONS
RTD Thermometers
Temperature range:
–201 to 1210°C (–330 to 2210°F)
Out-of-range display: - - -
-
Reso
lution:
From –330.0 to –100°C/°F: 0.1°C/°F
From –99.99 to 99.99°C/°F: 0.01°C/°F
From 100.0 to 999.9°C/°F: 0.1°C/°F
Above 1000°C/°F: 1°C/°F
Accuracy:
From –330.0 to –100°C/°F:
±0.1°C (±0.2°F)
From –99.99 to 99.99°C/°F:
±0.03°C (±0.06°F)
From 100.0 to 999.9°C/°F:
±0.1°C (±0.2°F)
Above 1000°C/°F: ±1°C (±2°F)
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:
0.5
second per up
date
Input:
One three-pin DIN connector
Input protection:
50V
rms
Storage:
–40 to 65°C (–40 to 149°F)
Humidity:
10% to 90% (noncondensing)
Battery Life:
Size: Three AA, 1.5V; alkaline
Life: 400 hours continuous, typical,
(without backlighting and buzzer on)
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
(with 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
by the battery life indicator.
Indicator
Voltage
Cell + 3 bars
More than 4.1 V
Cell + 2 bars
More than 3.6 V
Cell + 1 bar
More than 3.0 V
Cell + empty bars
flashing
More than 2.85 V
Adapter power
supply
Main power supply
connected
USB power supply
USB power
Selected settings
are
stored in
memory and will remain in memory
even
after
power is turned
off, or
while
batteries
are being replac
ed.
1. Before
changing
battery, tur
n
instrume
nt off
and disconnect RTD
.
2.
Loosen screw and
lift battery
cover
off
back
of case.
3.
Remove
the t
hree
AA batteries.
4. Insert three
new
batteries
observing
pol
arity.
5.
Install
cover and
tighten
screw
.
- 7 -
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.
- 8 -
6. ASSEMBLING OPTIONAL
HANDS-FREE ACCESSORIES
You can use the optional magnets and
strap in the Hands-Free Kit accessories
for hands-free operations.
- 9 -
7. CONNECTING A RTD
Use the correct 100 Ω RTD (al pha =
0.003850) for your instrument. Using
an incorrect probe type will result in
erroneous readings. Insert the 3-pin
plug into the mating connector on the
top of the instrument.
If no probe is connected the display
will read “op en”.
RTDs
are sensitive
at the tip or
sensing element
. W
hen
taki
ng
measurements, allow
time for the
reading to
stabilize. Multip
lying
the
time constant of the
probe by 5 will
give you
the
approx
imate time
required
.
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