GE Thermometer DPI 820 User Manual

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  
UMM - Pressure only. Task indication for the  
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 snapshot function is set up to record the data on  
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,  
thermocouple type (K, J, T ... ), T1/T2 - If applicable.  
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  
... Units To select the temperature units (°C or °F).  
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 ()  
Operation - Thermocouple connections  
To select and set up a scale of values: One local scale  
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  
Universal Measurement Module (UMM) or an RS232 device.  
• IDOS Communications  
When you attach the cable from a UMM (Figure 3), the  
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:  
1. Connect the applicable thermocouples (Figure 1/2) and, if  
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  
UMM - Pressure options only. Read all the instructions supplied  
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  
Figure 1: Example configurations - To measure the temperature  
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  
Use Snapshot to record up to 1000 displays then examine the  
results on the display, or transmit all the data to a PC or printer  
(Figure 5).  
Menu:  
Set Up  
Menu:  
Snapshot  
1. Select the applicable pressure task from Select Task  
(Table 2) and, if necessary, adjust the Set Up (Table 1), and  
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.  
Use these keys: , , MENU/OK  
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  
One display (One measurement) = 12 bytes  
IDOS - Leak test  
To do a leak test on a pressure system:  
1. Select an applicable leak test from Select Task (Table 2)  
and, if necessary, adjust the Set Up (Table 1), and the  
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  
traceable to international standards.  
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  
conditions, and to the applicable calibration standards.  
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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