9 error conditions and service requests – LumaSense Technologies INNOVA 1303 User Manual

Page 41

Advertising

Chapter 3
________________________________________________________________________

_______________________________________________________________________

BE1085-14

1303 Multipoint Sampler and Doser

LumaSense Technologies A/S

Page 41 of 60

3.8.4

Check_System Interface Job

This job starts a self-test sequence. This test sequence checks the func-
tions of the 1303’s sampler system with a two-part test, as follows.

1. Check of the sampling pump efficiency and air tightness: all

6 sampling valves are closed, the internal 3-way valve is set to
Waste Air Outlet and the sampling pump started. If the pressure

difference across the pump is less than 40kPa, either the sampling
pump is not operating efficiently, or there is an air-leak around the

pump. This sets the Sampling System Flag in the Warning Flags
byte – see

section 3.9.4

2. Check of blocked sampling channels: all 6 sampling valves are

closed, the internal 3-way valve is set to Waste Air Outlet and the

sampling pump started. One by one the sampling valves are

opened. If the resulting pressure difference across the pump (with
open sampling valves) is greater than 25 kPa, then the sampler

system airways are blocked. This sets the Sampling Channel Flag in
the Error Flags byte – see

section 3.9.5

If the above conditions cannot be met, the setting of the corresponding

Error flag causes a Service Request to be generated, if enabled – see

section 4.1.1

and

4.2.6

Example:

CHECK_SYSTEM<LF>

Starts the 1303’s self-test sequence

as described above.

3.8.5

Reset_System Interface Job

This interface job restarts the 1303. This job does not reset the 1303’s
set-up parameters or calibration data. The 1303 restarts as described

section 3.1

. Resetting the 1303 cancels any task which the 1303 was

performing prior to the reset.

Example:

RESET_SYSTEM<LF>

Resets the 1303.

3.9 Error Conditions and Service Requests

If an error arises in the 1303’s hardware, processor system or software,
the 1303 can signal the system controller by generating a Service Re-

Advertising