Obsolète – DPI 612

We currently have Genii DPI620G units which we are regularly seeing CJ temperature As
Found results out of specification @±0.2°C. We have to raise a deviation investigation
into each and every failure because these units are calibration standards and have
been found to be out of specification against the published Technical Data
(Datasheet).

However, the ±0.2°C is only quoted in the documentation as an uncertainty
specification and we are enquiring whether this is a realistic specification when
accounting for annual drift between calibrations.

It has also been noted that the CJ temperature can vary considerably if the units are
used when on charge.

In the user manual it mentions calibrate the CJ range to be within ±0.1°C accuracy.
The ±0.2°C uncertainty quoted in the datasheet is correct which includes the 1 year
annual drift specification.

Yes plugging in the charger will make the reading unstable due to heat generated.
Using charger while calibrating the CJ you need to leave the instrument switched on
until it reaches a stable reading (minimum: 1hour since the last power on) then perform
the calibration.

Calibrating the CJ range by powering the instrument via battery would be preferred
method, which will allow readings to stable quicker.

Attached is the FF device list as of Software Revision DK420 V03.20.01
The list is the same for the DPI620G / DPI620G-IS as the FF device list is part of the Main
Application DK420.

Attached is a DPI 620 compatibility table for PV62X & MC620

The Foundation Fieldbus and Profibus DD Libraries are part of the instruments Main
Application (software DK0420). Upgrading to the latest version of DPI 620 Genii software
will ensure you have the latest DD Libraries.
The DD’s on the manufacturers website are not in the correct format for the DPI 620G
therefore cannot be directly added.
If there are any DD’s that are not in the current library then the you will need to provide
us with the DD for us to format, we can then supply the procedure to add it to the
library

Material Safety Datasheet (MSDS) DPI 620G-IS Battery Pack

The MSDS for the Battery Pack Assembly is attached > download here

DPI620G / DPI880 – Minimum Load for mV/TC Sourcing

We don’t have a specific value but would suggest that the impedance of the device
should be 10M ohms or greater.
The DPI 620/880 will provide the correct voltage at the output terminals with lower
impedance devices but then cable resistance will become more significant.
Generally voltage input devices tend to have a high input impedance so should not be
an issue.

DPI620G-IS not recognizing PM620 sensor

If the PM620 is working, but isn’t been recognized by the DPI620GENII-IS when connected
to the pressure base. Then this could be due to signal or 5Vdc missing from the
terminal. Check across the terminals for signals, as per shown below,
image.png
Power the DPI620GENII-IS on and you can then measure the 5V dc at the two outer
terminals shown in the diagram above. With instrument switched off you should see
between the two middle terminals resistance approximately 9.36K ohms.
If no voltage or resistance then it could be that either base or digital board that is faulty
and would need further investigation. Recommendation is to return the instrument back
to Groby Service Centre for repair

What is DPI620G Genii error « CH1 Source Error »

The error message is likely to be caused by a hardware issue.
The instrument will need to be returned for investigation/repair

Attachment contains the MSDS > download here

How to install / update the DPI620G HART Library

The HART Library needs to be installed on the instruments SD card and not the internal
memory.
There are two methods to upgrade the HART Library:-
1. Using the upgrade procedure in the User Manual K0541 Issue 2 – First ensure that the
instruments USB Client Port is set to Storage Mode. Access the USB CLIENT PORT setting
as shown below and ensure that the USB CLIENT PORT is set to Storage mode and not
Communications.
Connect the USB lead from the PC to the Mini Type B USB port on the instrument.
The Internal SD card should then be seen on the PC as a removable disk as shown in
the image below.
The HART Library zip file can then be extracted to the SD card.
2. An alternative method to upgrade the HART Library would be to remove the battery
from the instrument and then remove the SD card from its carrier within the battery
compartment. Plug the SD card into the PC or a card reader. Extract the HART Library zip
file to the PC and then copy the HCF folder to the SD card (Note – remove the existing
HCF folder first).
Refit the SD card to its carrier and then re-fit the battery to the instrument.
On power up the revision of HART Library should be shown in the Software Status
menu.

Material Safety Datasheet (MSDS) DPI610 and DPI620 Battery Pack

Attached are the 2 battery MSDSs depending on product.
DPI 610/615 = Sanyo
DPI620/Genii = Varta

The DPI 620IS does not support HART Version 7 devices as the DPI 620IS is based on
Windows CE 5 which doesn’t have enough memory to run version 7 devices.
You could try upgrading the DPI 620IS software to the latest release to see if it will detect
the HART 7 devices.
Alternatively you can choose the option to connect using Generic mode, however this
will have reduced functionality.
For HART version 7 devices we recommend using the DPI 620 Genii or DPI 620 Genii-IS
with the latest software installed.

It is possible to upgrade Genii Lites to have HART and FF communication.
The instruments will require returning to the factory for reprogramming, the FF option
also requires some hardware adding and the FF Licence Installing.
The instrument label will also require updating to reflect the model change.
Our Customer Care team can provide you with a price for the upgrade.

DPI 620G – Battery Pack Specification Change

Battery Pack Part Number 127M8449-1 is the battery pack that we now supply for the DPI
620G
The information on the datasheet needs to be updated with the ratings for battery pack
127M8449-1. The reason for the small capacity change in the battery was due to an
update to the cells from our supplier.
The top level part number IO620-BATTERY remains the same.

It appears from the video that as the current increases towards 20 mA the transmitter
resets. This may be due to insufficient supply voltage at the transmitter terminals. As
the current increases the voltage drop across the internal 250 ohm HART resistor and
the Internal Impedance of the PSU (100 ohm) also increases which means the voltage
at the transmitter terminals reduces. This may leave insufficient supply voltage to
power the transmitter.
At 20mA there will be a 7 Volt drop across the internal 250 ohm HART resistor and the
Internal Impedance of the PSU (100 ohm). As the supply voltage from the Genii-IS is 15V
this only leaves 8 Volts to power the transmitter. If the minimum operating voltage of
the transmitter is more than 8V then you will need to use a different connection
method.
You can use an External Supply – see connection method in section 2 of the attached
document.
If an External Supply is not available then you can use the Internal Supply with the HART
resistor turned off. Using this method the Impedance of the Internal PSU acts as the
HART resistor – see connection method in section 4 of the attached document. Note
that you cannot measure the loop current on channel 2 using this method.
If you do require to use the Internal Supply and also to measure the loop current then
you need to use Channel 1 to measure the loop current – see connection method in
section 4.1 of the attached document.

Using the internal supply of the Genii-IS to power the current source you would be
limited to a maximum resistance of around 525 ohms at 24 mA.
This is due to the Genii-IS having a 15 Volt internal power supply with an impedance of
100 ohms. At lower currents the resistance can be higher eg at 4 mA you could have a
load of 3650 ohms

Approximately 2 to 3G Bytes of the SD card are used for the HART Library.
If we assume 500 bytes per reading, then 5Gb/500 bytes = 10 million samples – which
equates to nearly 4 months continuous logging at 1Hz.

There was a bug in Software Rev W that was causing the issue.
To fix the issue upgrade the instrument software to the current version.
The current version of software can be downloaded from:-

Fault due to a bad solder joint on Channel 2 COM terminal. Recommend replacement of
Analogue Board.

Similar to ‘000012592 and ‘000010427. Delete and use 000012592

The instrument will need returning to the factory as an additional board has to be fitted
and then the FF Licence has to be installed.

What is the Uncertainty of the DPI620 Thermocouple Channel

The uncertainty of the Cold Junction is not included in the uncertainty of the selected
Thermocouple channel.

How to update the DPI620 HART Library

You can try copying the library to a 4GB SD card:- Note Micro SD HC is not compatible.
Alternatively you can just copy the manufacturers folders for Siemens, Emerson and
Vega from the latest library to the existing 2GB micro SD card. The instructions to do this
are attached.
The latest HART library can be downloaded from the link below:-

DPI 620 – CH2 24V Output Not Working When Sourcing mA

Has an attempt been made to calibrate the mA output on CH2?
If the calibration has been done incorrectly then this can stop the 24V output from
working.
When you calibrate the CH2 mA output you need to use an external power supply.
The Polarity of the external supply needs to be reversed for the -24 mA calibration.
The minimum point for the -24mA range is entered as +24mA and the maximum point
as +0.2mA.
It might be worth carrying out the above adjustment procedure to see if the 24V output
is then restored.

The glass is part of the touchscreen, therefore the touchscreen will have to be replaced.
The part number for the touchscreen is IS620-7.

The Application has probably been upgraded before the OS. From DK420 V02.06.03 the
OS has to be upgraded before the Application.
Re-install the old Application by inserting a USB memory containing the old Application,
power up the instrument and keep the power button held down. The instrument will
display the message « Force Upgrade Yes/No », select « Yes » and the Application should
install. Once the instrument is functioning correctly proceed to upgrade the OS followed
by the Application.

Material Safety Datasheet (MSDS) DPI 620-IS Battery Pack

The MSDS for the Battery Pack is attached.

Zero Offset on Current Measure with 24V supply on

This was caused by a bug in the software and was corrected at Application DK420
V03.10.02 (Release L).
Check the Software Status to see what version of Application is installed.
If it is older than V03.10.02 then upgrade to the current version.
The DPI 620 Genii software can be found at the link below.
https://www.bakerhughesds.com/druck/multifunction-calibrators

Material Safety Datasheet (MSDS) DPI 620G Battery Pack

The MSDS for the DPI 620 Genii battery pack is attached.

What is the « .NET CF Initialization Error » on DPI620G Genii

The messages indicate that some of the software components have not been installed.
Re-install the software by using the « Force Application Upgrade » method.
The procedure to re-install the software by using the « Force Application Upgrade »
method is described below:-
First connect a USB stick containing the current version of Genii software to the Genii.
Switch on the Genii and keep the power button held down until the message
« Application Upgrade – Force Application Upgrade? Yes/No » is displayed.
Select « Yes » and the Application should install.
Note:- If an out of date OS is detected then the option to upgrade the OS first may be
displayed. Carryout the OS upgrade then the Application can be installed.

It is possible to copy the cal data over so long as you can retrieve the cal data from the
old digital board.
The procedure is described below:-
Note – It will be easier to follow the procedure if you plug a mouse into the Genii’s USB
port.
From the Dashboard select the Applications icon, then select the Desktop icon.
From the Desktop select My Device -> MMC Memory -> AMC -> CFiles
Copy the following files to the instruments SD card (My Device -> SD Memory).
User Settings
Config
In turn delete each of the above files from the Digital Board and then copy the old
file from the SD card to the CFiles Folder.
Once completed all ranges should display in white digits, any ranges showing blue
digits will indicate an un-calibrated range.
Carryout a calibration verification to confirm that the data has been successfully
transferred.
If you need to re-enter the serial number then from the menu select Calibration and
enter the pin 1129, the serial number can then be entered.

DPI620-IS not measuring or sourcing & CPLD Software Version Showing
V0.00.00

As the inputs and sourcing are not working on either CH1 or CH2 then it looks like the
PSUs or battery fuses may have blown in the CH1 and CH2 circuit.
To check if it’s the battery then you can try a known working one or you can check the
battery circuits by measuring the contact voltages.
There are five pairs of contacts for the five internal circuits, these are shown in the
photo below. The Battery Voltage is measured between VBAT and GND.
The Battery Voltage is nominally 3.6 V, but with a fully charged battery can be initially as
high as 4.2V.
The PSU can be checked by substituting the case base with a known working case
base. If the PSU is faulty then the internal fuses have probably blown and a new case
base would be required.

Unable to Zero the Remote IDOS sensor on DPI880

The zero problem is likely to be caused by outdated software.
Check the version of software installed in the DPI 880, if the software version is 01.00.00
then the software will require upgrading.
To view the software version:-