Certifications
MAN0984_Iss 4_01/19
Touchpoint Plus
Pt. No. 3011M5001
128
Technical Handbook
12.3
European Performance Approval (DEKRA Testing and Certification GmbH) for
Systems
Touchpoint Plus has been assessed and certified for European Performance. Touchpoint Plus has
been approved by DEKRA Exam for use in the measurement of oxygen, combustible and toxic gases.
The certification marking is shown below:
BVS 17 ATEX G 001 X
for EN 60079-29-1 and EN50271
PFG 17 G 002 X
for EN 50104, EN 45544-1/2/3 and EN 50271
12.3.1
Special Conditions for Use When Used for measurement of flammable gases
1) Refer to certificate
BVS 17 ATEX G 001 X.
2) Only 4-20 mA output and relay output have been considered as safety functions. Other outputs (e.g.
RS485 Modbus RTU, TCP/IP Modbus/HTTP) shall NOT be considered as safety functions.
3) BVS 17 ATEX G 001 X is only valid for operation with sensors Sensepoint and Sensepoint HT in the measuring
range 0 - 100 % LEL, Sensepoint ppm in the measuring range 0 - 10 % LEL or a certified 4-20 mA
transmitter.
4) When using 4-20 mA transmitters, pay particular attention to the followings:
- The specifications of the 4-20 mA interface
- Behaviour with currents less than 4 mA
- Behaviour with currents in excess of 20 mA
5) Set the parameter "resolution" to 1 % of full scale range or to a smaller value.
6)
Full scale ranges up to 20 % LEL:
- Do not set both parameters "Lower deadband" and "Gas Under range" to values below -10 % of full scale
range.
- Do not set the parameter "Gas Under range" to a value below -20 % of full scale range.
7) Full scale ranges up above 20 % LEL:
- Do not set the parameter "Gas Under range" to a value below -10 % of full scale range.
8) Set the parameter "Upper deadband" to 5 % of full scale range or to a smaller value.
9) Configure the alarms of all input channels as latching.
10) Configure relay outputs for safety-related switching operations in such a way that they cannot be reset while
the alarm condition is present.
11) Time delayed relays should not be used for safety related purposes. If their use is unavoidable, the relay delay
time shall be set to the minimum value which is feasible for the required operation. Take the maximum
possible rate of increase of gas concentration into account when determining the relay delay time.
12) Transmission errors between modules cause a fault after 5 s at the latest.
13) Do not use Touchpoint Plus with 4-20 mA transmitters which may give indications within their measuring
range at gas concentrations above full scale.
14) Perform the test routines for display, LED and buzzer in weekly intervals.
15) Set the parameters "Inhibit Output Level", "Fault Output Level" and "Warning Output Level" of mA outputs to
values outside the range 4 mA to 20 mA so that the output of such a current can be unambiguously
distinguished from a measured value. Avoid settings between 3.5 mA und 20.5 mA.
16) One of either RLY1 or RLY2 in main board shall be configured to System inhibit Relay.
WARNING
Ambient temperature: Dependent on components fitted, check individual rating plates.
AVERTISSEMENT
Température ambiante : elle dépend des composants assemblés, vérifier individuellement les plages
de température
