Operation; Analogue Output Protocol; Hart® Interface - Simtronics GD10-P00 Operating Manual

5.

OPERATION

5.1.

Analogue Output Protocol

Gas reading and fault signalling is given through the 4-20mA current loop interface.
The table below shows the analogue output level for the various conditions.
Condition
Normal gas reading
Early Dirty Optics
Warning
(55% signal reduction)
Dirty Optics Warning
(70% signal reduction)
Detector Fault
*) Shows default factory setting. Can be configured via HART® terminal
5.2. HART® Interface
5.2.1. Introduction
Simtronics GD10P detector supports HART® version 7.
For proper operation between GD10P and the HART® communicator, a dedicated
Device Descriptor (DD) should be loaded onto the communicator. If such DD is not
present, the communicator will offer a proprietary generic interface, and the list of
available functions may be limited and variable.
The proper DD for GD10P can be downloaded from HART® Foundation website
www.hartcomm.org
Products", or requested directly from Simtronics. The loading of the DD onto a
specific communicator must be done according to the relevant user guide for that
communicator.
DD has no relevance for earlier versions of GD10 (the generic HART®
!
devices). Customers having such detector still need to use #-codes
described in Appendix 1 at page 30 of this manual.
GD10P
Analogue output
4 mA - 20 mA
2 mA
1 mA
< 0,5 mA
(search for Simtronics under "Product Catalog"  "Wired
Page 14 of 32
Comment
4 mA = 0% of range
20 mA = 100% of range (or higher)
*) Detector will still output gas
concentration if it is greater than
7 % of range (FS)
*) No detection
*) No detection
850-811250-R05