WirelessHART Toxic & Combustible Gas Detector
IM_TCD50-05
www.ueonline.com/vanguard
21
3.3 Programming Mode
This section describes the HART Commands used in the device.
3.3.1 Universal Commands
The Universal Commands are the minimum command set for all HART devices and provide access to information useful in normal
device operation. Table 5 shows the supported Universal Commands for this device.
0
read Unique identifier
1
read Primary variable
2
read loop current and Percent range
3
read Dynamic variables and loop current
6
Write Polling Address
7
read loop configuration
8
read Dynamic variable classifications
9
read Device variables with status
11
read Unique identifier Associated with Tag
12
read Message
13
read Tag, Descriptor, Date
14
read Primary variable Transducer information
15
read Device information
16
read Final Assembly number
17
Write Tag, Descriptor, Date
18
Write Tag, Descriptor, Date
19
Write Final Assembly number
20
read long Tag
21
read Unique identifier Associated with long Tag
22
Write long Tag
38
reset configuration changed Flag
48
read Additional Device status
Table 5
3.2.2 Bump Test
1. Select and use a test gas cylinder of a known concentration of either
H
2
S
or CH
4
.
Note:
CH
4
sensors are maintenance-free and do not require calibration however UE does recommend periodic bump testing to
assure optimum performance.
2. Push the button to access the Gas Concentration screen on the local, digital display.
3. Apply the test gas to the sensor with the aid of the UE Vanguard gas calibration kit..
4. Apply the gas and verify that the gas concentration reading on the local, digital display matches the concentration of the test
gas.
Note:
In the absence of a test gas (concentration falls below 10 ppm), the device disconnects from sensor display mode and
returns back to operational mode after 5 minutes.
5. Push the button once again to return to operational mode.
