Operation; Normal Operation; Sensor Calibration & Bump Test - United Electric Controls VANGUARD Installation And Operation Instruction Manual

2.9.3 HART Modem
❶
If not previously done (from installing the battery – see Section
2.1 Battery Installation), unscrew the solid, back cover from the
intrinsically safe battery compartment and set aside.
❷
Confirm battery installation or install battery (see Section 2.1
Battery Installation).
❸
Push the button on the side of the device to activate the wired
HART interface.
❹
Connect wires from HART Modem to HART terminals (see Figure 32).
NOTE: The HART modem should be connected to a computer
running HART compatible software.
❺
Obtain the Network ID and Join Key of the wireless network to
which the device will be joined. This information can be found under
the Settings section on the web server supporting the wireless
Gateway. Consult the wireless Gateway manual for additional
information.
❻
There are two ways to connect to the wireless mesh network.
1. Identify the device icon on the Gateway software and drag and
drop the icon onto the Gateway icon.
2. Open the device menu options and enter the Network ID and
Join Key manually.
❼
Upon inputting the Network ID and Join Key, the device initializes
connection with the network in the following phases. The phase
status will be indicated on the device display. Refer to Figures 33-37.
❽
If the device fails to join the wireless mesh network, consult the
Troubleshooting Guide (see Section 5.0).
❾
Disconnect wires from the HART terminals and secure cover onto
enclosure by tightening until all threads have been fully engaged to
ensure proper ingress protection.

3.0 OPERATION

THIS DEVICE IS FOR MONITORING AND COMMUNICATING
GAS CONCENTRATION LEVELS FOR DATA COLLECTION
OR RECORD KEEPING AND DOES NOT PROVIDE ALARM
SIGNALS.
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND/
OR PERSONAL INJURY. THESE INSTRUCTIONS MUST
BE THOROUGHLY READ AND UNDERSTOOD PRIOR TO
INSTALLATION OF THE UNIT.
THE END-USER IS RESPONSIBLE FOR MAINTAINING THE
DEVICE IN FULL, OPERATIONAL CONDITION.

3.1 Normal Operation

Under normal operation, the four variables (Table 1) are
communicated via WirelessHART 7.2 communication
protocol every 8 seconds by default using burst message
0. The update rate is programmable from 8 seconds up
to 3600 seconds. Up to three burst messages (0-2) can be
configured using the device descriptor. The burst message
transmits a chosen HART command to publish data. HART
commands that can be burst include: 1, 2, 3, 9, 33, and 48.
The default configuration uses commands 9 and 48.
Device Variable
Primary Variable
Gas Concentration
(PV)
Secondary Variable
Temperature
(SV)*
Tertiary Variable
Days Since Calibration Days
(TV)
Quaternary
Battery Voltage
Variable (QV)
* Not available on the combustible sensor.
NOTE: At the device, via the local, digital display, two
variables are communicated by pushing the button once –
the PV and QV (see Table 1).
The following procedure should be used to configure a
burst message:
❶
Turn off any burst messages to be changed prior to configuration.
❷
Select the burst message and Hart command for publishing.
Consider what update rate is to be used based on application. Faster
update rates can impact battery life.
❸
Enable burst messages.
3.2 Sensor Calibration & Bump Test
THOROUGHLY READ AND UNDERSTAND ALL SAFETY DATA
SHEETS (SDS) AND WARNINGS ASSOCIATED WITH GASES
USED FOR CALIBRATION AND/OR BUMP TESTING.
DURING SENSOR CALIBRATION MODE, THE DEVICE IS
OPERATIONAL BUT NOT COMMUNICATING DATA. PROPER
CARE SHOULD BE TAKEN TO ENSURE THAT SURROUNDING
ENVIRONMENT IS FREE OF TOXIC OR COMBUSTIBLE GASES. IT
IS RECOMMENDED THAT OTHER GAS DETECTION BE DEPLOYED
DURING SENSOR CALIBRATION AND/OR BUMP TESTING TO
PREVENT EXPLOSION, SERIOUS INJURY OR DEATH.
SENSORS MUST BE ACTIVATED BEFORE USE.
Depending upon the use of the device, a calibration
check or a bump test may need to be performed. It is
recommeneded to perform the calibration or bump
test with the UE Vanguard gas calibration kit (setup
instructions included). Either of these tests are done to
ensure that the sensor will respond as intended to a
predetermined, measured gas release. UE recommends
following the end user's standard practices for gas
detection sensor calibration and bump testing. See
Annex 1 for sensor detection ranges.
11
Process Variable Units
ppm, %LEL Read
Degrees C Read
Volts
IM_TCD60 02
Accessibility
Read
Read
Table 1