DPI 820
Dual Input Thermometer
User manual
K386 Issue 1
Table of Contents
Introduction
The DPI 820 Dual Input Thermometer is part of the GE Druck
DPI 800 series of hand held instruments.
The DPI 800 series uses Intelligent Digital Output Sensor (IDOS)
technology to give instant plug and play functionality with a
range of Universal Measurement Modules (UMM).
The DPI 820 includes these functions:
Function
* Measure temperature: T1 and/or T2
* Measure temperature difference: T1 - T2
* Cold Junction (CJ) compensation
Snapshot: Up to 1000 displays with a date/time stamp
Communications port: IDOS or RS232
Language selection
** Measure pressure/Leak test: UMM - Pressure
Other functions: Hold, Maximum/Minimum/Average, Filter, Tare,
Scaled values, Backlight, Alarm
*
Refer to “Specification”.
** Optional item
Safety
Before you use the instrument, make sure that you read and
understand all the related data. This includes: all local safety
procedures, the instructions for the UMM (if applicable), and this
publication.
Specification - General ......................................................... 8
Specification - Temperature ranges ...................................... 8
Before you start an operation or procedure, make sure that you
have the necessary skills (if necessary, with qualifications from
an approved training establishment). Follow good engineering
practice at all times.
Customer Service .................................................. Back cover
WARNING
•
It is dangerous to ignore the specified limits for the
instrument or to use the instrument when it is not in its
normal condition. Use the applicable protection and
obey all safety precautions.
•
•
Do not use the instrument in locations with explosive
gas, vapor or dust. There is a risk of an explosion.
To prevent electrical shocks or damage to the
instrument, do not connect more than 30V between the
terminals, or between the terminals and the ground
(earth).
•
UMM - Pressure options only. To prevent a dangerous
release of pressure, isolate and bleed the system before
you disconnect a pressure connection.
Safety - Marks and symbols on the instrument
Complies with European
Union directives
Warning - refer to the
manual
Read the manual
Battery
Ground (Earth)
Identifies the
thermocouple connector
T1/T2
ON/OFF
K386 Issue 1
[EN] English - 1
To start
To start - Items on the display A2
To start - Location of items A1
Item
13.
Description
Item
1.
Description
leak test.
◗
On or off button.
Refer to: Select Task (Table 2)
2.
Left-hand soft-key. Selects the function above it on the
display (Item 20). Example: Edit
◗ ◗
14.
15.
16.
The measured value satisfies one of the alarm
conditions. Refer to: Settings (Table 3)
3.
Moves back one menu level.
Leaves a menu option.
Cancels the changes to a value.
ESC
The data on the display is on hold. To continue, press
the HOLD button again.
4.
5.
Increases or decreases a value.
Highlights a different item.
◗
◗
the display (Periodic or Keypress).
Refer to: Set Up (Table 1)
Holds the data on the display. To continue, press the
HOLD button again.
HOLD
17.
18.
Shows the battery level: 0 ... 100%.
Snapshot mode (Item 16): Records the data on the
display.
Identifies the type of data: measurement range, units,
6.
7.
Shows the Select Task menu.
Selects or accepts an item or value.
Selects [◗] or cancels [ ] a selection
MENU
OK
= Input
= IDOS Input
Refer to: Select Task (Table 2)
Right-hand soft-key. Selects the function above it on the
display (Item 20). Example: Settings
19.
Shows the settings applied to the input (If applicable).
◗ ◗
123ABC = x:y scaled value
8.
9.
Display. Refer to A2
Communications port. Use to connect a Universal
Measurement Module (UMM) or a RS232 cable.
= Filter
= Maximum
= Average
= Minimum
SENSOR/
PC
= Tare
Optional item - Part No. IO800D: RS232 cable (5-pin to
9-pin D type connector). Use to copy the snapshot
records to a PC or to a printer. Refer to “Operation”.
9a.
Refer to: Settings (Table 3)
20.
A soft-key function. To select an available function,
press the soft-key below it. Example:
10.
10a.
11.
Thermocouple connector: Refer to “Operation”.
Type K thermocouple (two included).
= Move left
= Move right
Connection point for some of the optional accessories.
Refer to the datasheet.
21.
22.
The measured value or values applicable to the task
selection.
12.
Battery compartment. Refer to B1.
The Edit display to set up text labels ( ≤ 6 characters):
Snapshot (Table 1), x:y Scaling (Table 3).
OK
= Accept the new text label
Shift = Change the keys: 123ABC or -_+abc
= Add a space
BS
= Back space (Delete character)
To start - Prepare the instrument
Before you use the instrument for the first time:
•
•
•
Make sure that there is no damage to the instrument, and
that there are no missing items.
Remove the plastic film that protects the display. Use the tag
(◗) in the top right-hand corner.
Install the batteries (refer to B1). Then re-attach the cover.
To start - Power on or off
To turn the instrument on or off, press ◗ (A1 - item [1]). The
instrument does a self test and then shows the applicable data.
When the power is off, the last set of configuration options stays
in memory. Refer to “Maintenance”.
2 - English [EN]
K386 Issue 1
To start - Set up the basic operation
Use the Set Up menu to set up the basic operation of the
instrument.
To start - Select a task (Measure)
When the instrument is set up (Table 1), use the Select Task
menu to select the applicable task.
Menu:
Select Task
Menu:
Set Up
Menu:
Select Task
Display:
T1 input
1
2
3
4
5
1
2
3
◗
◗
◗
◗
◗
◗
(Table 2)
(Table 1)
[◗]/[
]
(Table 2)
Sk2 = Settings
If there is additional data for a menu option, select Settings (◗◗)
to see the values that are set up. If necessary, adjust the values.
In Table 2, IDOS is a Universal Measurement Module (UMM). If
you attach a UMM to the communications port (A1 - item [9]), the
Select Task menu includes the applicable IDOS options.
Table 1: Menu options - Set Up
Table 2: Menu options - Select Task
Options
Description
Options
T1
Description
Selects one temperature measurement task (T1, T2,
T1-T2). T1-T2 gives the temperature difference.
... Units UMM - Pressure options only. = “Pressure Units” if you
select an IDOS task (Table 2). If applicable, select one
of the fixed units of measurement (psi, mbar ... ).
Selects two temperature measurement tasks (T1 and
T2).
To set up and use the Snapshot functions.
Additional data: Refer to Operation (Table 4)
IDOS
IDOS
UMM - Pressure options only. Selects the IDOS
pressure measurement task.
... type To select an applicable thermocouple type (K, J, T ... )
UMM - Pressure options only. Selects one
temperature measurement task (T1, T2, T1-T2) + the
IDOS pressure measurement task.
... Scale To select the applicable international temperature
scale: IPTS 68 or ITS 90.
To select and set up the backlight facility + timer.
Additional data: Select Settings (◗ ◗)
UMM - Pressure options only. Selects the IDOS
pressure measurement task + leak test.
To select and set up the power off facility + timer.
Additional data: Select Settings (◗ ◗)
To set up the way the instrument works.
Additional data: Refer to: Set Up (Table 1).
To show the battery level (%).
To set the display contrast (%).
◗◗ Increases %, ◗◗ decreases %
To set the time + date. The calibration facility uses the
date to give service and calibration messages.
Snapshot adds a date/time stamp to each display.
To set the language option.
To calibrate the instrument.
Additional data: Refer to “Maintenance”.
To select and show the applicable status data
(Software Build, Service History, Serial Number).
K386 Issue 1
[EN] English - 3
To start - Set up the settings
When the task is set up (Table 2), use the Settings menu to
adjust the input operation.
To start - Edit functions
Example 1) Set up a label for x:y Scaling = %.
Settings
1
Edit
2
Edit
3
x:y
Display: Task
T1, T2
Settings selection
(If applicable)
1
2
3
◗
◗
◗ ◗
Shift
◗ ◗
◗
◗
◗ ◗
Sk1 = Edit
A2 - item [22]
Sk2 = Settings
Edit
...
Edit
4
5
Menu:
Settings
Settings
x:y
4
5
6
◗
◗
%_
OK
◗ ◗
◗
◗
◗ ◗
A2 - item [22]
Example 2) Set up values for x:y Scaling = 0 to 100%.
(Table 3)
[◗]/[
]
Sk1 = Edit
Settings
x:y
Settings
x:y
1
2
Edit
3
4
If there is additional data for a menu option, select Settings (◗◗)
to see the values that are set up. If necessary, adjust the values.
Refer to “Edit functions”.
◗
◗
◗ ◗
◗
◗
Table 3: Menu options - Settings
◗ ◗
Options
Description
To include maximum, minimum and average values for
the measurement task (If applicable). Only available
when there is one input measurement task.
Sk1 = Edit
Operation
To select and set up a tare value for the measurement
task (a specified value or the reading on the display).
The instrument subtracts a positive tare value, and
adds a negative tare value.
This section gives examples of how to connect and use the
instrument. Before you start:
Read and understand the “Safety” section.
Do not use a damaged instrument.
•
•
Additional data: Select Settings (◗ ◗)
for each measurement task (Maximum: 5).
Attach the thermocouple wires to the applicable thermocouple
mini-connector (Figure 1). The wider blade is the negative.
Then attach the connector to the instrument.
Additional data (Table 1): Select Settings (◗ ◗)
To select and set up the filter values to give a
smoother output for the measurement task:
Operation - Communications port connections
Use the communications port (A1 - item [9]) to attach an IDOS
• IDOS Communications
instrument automatically changes the menus to give you all the
applicable options (Table 2).
Band as a % of full scale (FS). The filter
compares each new value with the previous
value. If the new value is outside the band, it is
not filtered.
Low pass filter time constant in seconds.
Increase the value to increase damping factor.
Additional data: Select Settings (◗ ◗)
• RS232 Communications
Use an RS232 cable (A1 - item [9a]) to transmit all the Snapshot
data to a PC or a printer (Table 4).
To select and set up the alarm values for the
measurement task (maximum and minimum).
Additional data: Select Settings (◗ ◗)
UMM - Pressure options only. Gage sensors or
sensors with differential operation. A zero correction
that makes the instrument read zero at local pressure.
Leak Test only. To set an applicable period for the leak
test (Hours:Minutes:Seconds).
4 - English [EN]
K386 Issue 1
Operation - Measure temperature
.
To measure temperature:
necessary, adjust the Set Up (Table 1).
T1
T2
2. Select a Temperature input task from Select Task (Table 2)
and, if necessary, adjust the Settings (Table 3).
K
K
If the display shows <<<< or >>>> :
•
Make sure that the wires and the sensor are serviceable.
T1
T2
K
K
T1
T2
Reference
T1
T2
T1
T2
Settings
a) T1 - T2
Figure 2: Example configuration - To measure the temperature
difference
Operation - IDOS Pressure measurements
with the UMM and then use the specified procedures to connect
it (Figure 3/4).
Settings
Settings
a) T1 or T2
b) T1 and T2
with one or two thermocouples
The examples in Figure 1 show how to compare temperatures or
measure different temperatures in a system.
Settings
Start
Settings
a) Pressure
b) Leak test
Figure 3: Example configuration - Pressure measurement
with a UMM
K386 Issue 1
[EN] English - 5
When the UMM is connected, make the necessary pressure
selections.
IDOS - Measure the pressure
Operation - Use the Snapshot functions
results on the display, or transmit all the data to a PC or printer
(Figure 5).
Menu:
Set Up
Menu:
Snapshot
the Settings (Table 3).
2
3
4
5
2. If necessary, do a zero correction (Table 3).
◗
◗
◗
◗
To measure pressure and temperature (Figure 4), use the same
procedure.
T1
(Table 1)
(Table 4)
If there is additional data for a menu option, select Settings (◗◗)
to see the values that are set up. If necessary, adjust the values.
K
Table 4: Snapshot functions
Options
Description
To set up a file name (refer to “To start“) and to select
the Snapshot method:
Use this option to record an individual display
each time you press HOLD.
Use this option to record the displays at
specified intervals of time. Press HOLD to start.
Additional data: Select Settings (◗ ◗)
Off - Snapshot is off
To show the available Snapshot data on the
display.
To transmit all the Snapshot data to a PC or a printer
(Figure 5).
To erase all the Snapshot data.
To show the amount of memory used (%).
Total memory = 12 288 bytes
Capacity ≈ 1000 displays (one measurement)
Capacity ≈ 750 displays (two measurements)
Settings
Example:
Figure 4: Example configuration - To measure pressure
and temperature
One file ≈ 96 bytes (no Settings)
For each display in the file:
Date/Time = 8 bytes; Each value = 4 bytes
IDOS - Leak test
To do a leak test on a pressure system:
Settings (Table 3).
Snapshot - Use the Snapshot data
Use HOLD to record the data (Table 4). When you have
sufficient records, select Stop Log (◗◗). You can then read the
data back on the display or transmit it to a PC or printer.
2. Set the period for the leak test (Table 3).
3. If necessary, do a zero correction (Table 3).
4. To start the leak test, select Start (◗ ◗). When the test is
finished, the instrument calculates the leak rate in the
applicable units/minute.
Figure 5: (Part of figure) Procedure to transmit the Snapshot data
6 - English [EN]
K386 Issue 1
Maintenance
This section gives procedures to maintain the unit in a good
condition. Return the instrument to the supplier for all repairs.
Step
Procedure
A1 - Item [9a] (Optional): Connect the 5-pin connector
to the IDOS instrument.
◗, ◗
Maintenance – Clean the unit
Clean the case with a moist, lint-free cloth and a weak detergent.
Do not use solvents or abrasive materials.
A1 - Item [9a] (Optional): Connect the 9-pin connector
to the serial port on the PC or to a serial printer (refer
to the PC or printer instructions).
PC: Make sure that Windows® HyperTerminal or
similar program is set up to use the specified data
format (refer to your PC on-line Help).
◗
Maintenance – Replace the batteries B1
To replace the batteries, refer to B1. Then re-attach the cover.
Make sure that the time and date are correct. The calibration
facility uses the date to give service and calibration messages.
All the other configuration options stay in memory.
◗
Serial printer: Make sure that the printer can use the
specified data format.
Maintenance – Recalibrate the unit
Note: GE Druck can provide a calibration service that is
◗
Data format
Baud rate: 19200
Parity: None
Data bits: 8
Stop bits: 1
Before you start the calibration, make sure that the time and date
are correct (Table 1).
Software handshake: Xon/Xoff Flow Control
ASCII format text; Comma delimited
To get accurate results, do the calibration in stable temperature
Selection sequence:
Transmit the data to the PC or printer (Table 4).
◗
PC: Use Windows® HyperTerminal or a similar
program to make a text file. You can then import the
text file into a spreadsheet.
◗ Select Task (Table 2) ◗ Set Up (Table 1) ◗ Calibration ◗.
Display: Enter
Calibration PIN
Menu:
Select Channel
Figure 3. (Part of figure) Procedure to transmit the Snapshot data
1
2
3
4
5
Snapshot - Contents of the Snapshot data
Model
820
◗
◗
Serial No
8200000001
◗
◗
+
◗ ◗
Calibration due 01/01/2004
Tag
H2O-1
110
Task Id
T1 in
Factory PIN = 4321
(Table 5)
When you select a channel, the display shows the applicable
instructions to complete the calibration.
Date
Time
°C K T1
27.6
08/07/2004
08/07/2004
Tag
12:06:44
12:06:46
B145
Table 5: .Calibration options
27.2
Options
mV...
CJ...
Description
To calibrate the specified thermocouple channel.
To calibrate the specified cold junction channel.
Task Id
T1 In
164
Tare On
Filter On
Time
IDOS ... UMM - Pressure only. To calibrate the specified IDOS
channel. Refer to the UMM specification
T2 In
Tare On
°C K T1
32.5
Date
°C K T2
32.4
To set the date for the next calibration.
After the specified calibration date, there is a warning
message. There is a selection box to stop the warning.
08/07/2004
08/07/2004
08/07/2004
14:41:36
14:41:38
14:41:41
32.5
32.4
32.4
32.5
To change the calibration PIN (Personal Identification
Number).
Figure 6: Example Snapshot data
When the calibration is complete, select Calibration Due and set
the new calibration date.
Calibration: Measure mV
The specified accuracy (refer to “Specification”) includes an
allowance for temperature changes, reading stability for one
year, and the uncertainty of the standard used for calibration.
GE Druck recommend that you return the instrument to the
manufacturer or an approved service agent for calibration.
If you use an alternative calibration facility, make sure that it
uses these standards:
•
Accuracy of the mV calibration equipment:
0.008% reading + 0.003% FS or better.
Calibration limit for the instrument (mV measure): 0.01%
reading + 4 µV or better.
•
K386 Issue 1
[EN] English - 7
Specification data
All accuracy statements are for one year.
Specification - General
Languages
English [Default]
Operating temperature
Storage temperature
Humidity
14 … 122°F (-10 … 50°C)
-4 … 140°F (-20 … 60°C)
0 to 90% without condensation
(Def Stan 66-31, 8.6 cat III)
Shock/Vibration
EMC
BS EN 61010:2001; Def Stan 66-31, 8.4 cat III
BS EN 61326-1:1998 + A2:2001
Electrical - BS EN 61010:2001; CE Marked
7.1 x 3.3 x 2.0 in (180 x 85 x 50 mm)
14 oz (400 g)
Safety
Size (L: W: H)
Weight
Power supply
Duration
3 x AA alkaline batteries
> 80 hours (Measure),
> 10 hours (24 V Source at 12.5 mA)
Specification - Temperature ranges
Thermocouple type
Standard
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
IEC 584
DIN 43710
DIN 43710
DIN 43710
Range °F
Range °C
-270 .... -200
-200 ... 1370
-210 ... 1200
-270 .... -180
-180 ...... -70
-70 ..... 400
50 ..... 500
Accuracy °F *
3.6
Accuracy °C *
2.0
K
K
J
-454 .... -328
-328 ... 2498
-346 ... 2192
-454 .... -292
-292 ...... -94
-94 ..... 752
122 ..... 932
932 ... 2192
2192 ... 3308
-58 ....... 32
32 ..... 572
1.1
0.6
0.9
0.5
T
2.5
1.4
T
0.9
0.5
T
0.6
0.3
B
B
B
R
R
R
S
S
S
E
E
N
N
L
7.2
4.0
500 ... 1200
1200 ... 1820
-50 ......... 0
0 ..... 300
3.6
2.0
1.8
1.0
5.4
3.0
3.6
2.0
572 ... 3216
-58 ....... 32
32 ..... 212
300 ... 1769
-50 ......... 0
0 ..... 100
1.8
1.0
4.5
2.5
3.4
1.9
212 ... 3216
-454 .... -238
-238 ... 1832
-454 ........ -4
-4 ... 2372
100 ... 1769
-270 .... -150
-150 ... 1000
-270 ...... -20
-20 ... 1300
-200 ..... 900
-200 ..... 100
100 ..... 600
0 ... 1500
2.5
1.4
1.6
0.9
0.7
0.4
1.8
1.0
1.1
0.6
-328 ... 1652
-328 ..... 212
212 ... 1112
32 ... 2732
0.6
0.3
U
U
C
C
C
D
D
D
0.9
0.5
0.6
0.3
1.8
1.0
2732 ... 3632
3632 ... 4208
32 ... 3092
1500 ... 2000
2000 ... 2320
0 ... 1700
2.5
1.4
3.4
1.9
1.8
1.0
3092 ... 3992
3992 ... 4523
1700 ... 2200
2200 ... 2495
2.9
1.6
6.5
3.6
*Cold Junction (CJ) error (Maximum):
Range 10 ... 30°C (50° ... 86°F) = 0.2°C (0.4°F)
14 … 50°F, 86 … 122°F
(-10 … 10°C, 30 … 50°C)
Add 0.01° CJ error / ° ambient temperature change for ranges:
8 - English [EN]
K386 Issue 1
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