Technical Data; Disposal - Elster themis plus Operating Instructions For Consumers

Technical data

RoHS compliant
Application with diaphragm gas meters BK..B
Enclosure: IP 65.
Maximum allowable operating pressure p
overpressure): see index plate,
base gas pressure p : see index plate,
b
operating pressure range (absolute) p
800 to 1600 mbar.
Life of battery for index: approx. 15 years.
Life of battery for communications module:
approx. 5 years.
Ambient temperature of index: -25 to +55°C (for
entire meter, see index plate).
Accuracy of the clock: 0.4 s/day at 20°C on the
day of manufacture.
Temperature measurement accuracy on the day of
manufacture:
± 0.2°C in the range from -10 to +55°C.
± 0.25°C in the range from -25 to -10°C.
Pressure measurement accuracy: ± 5 mbar on the
day of manufacture.
Pulse value V for pulse tests via optical inter-
Imp
face:
Gas meter
BK-G6
BK-G10 – BK-G40
Communications module: GSM RF technology.
Data logger for past meter readings:
up to 20 weeks in hourly intervals.
Optical interface: pursuant to EN 62056-21,
Mode (E), Annex B.2.
Pulse output
Type of switch: open collector transistor, normally
closed.
For switching voltage and current, see section
"ATEX explosion protection" below.
Resolution: 1 pulse per 10 litres of base volume.
Maximum pulse frequency: 4 Hz.
Minimum pulse duration: 125 ms.
For further technical data on diaphragm gas meters
BK, see:
"Operating instructions for diaphragm gas meters
BK-G1.6 to BK-G25" →
http://docuthek.kromschroeder.com/doclib/main.ph
p?language=1&folderid=400041&by_class=2&by_
lang=-1
"Instruction Manual, Industrial Diaphragm Gas Meters
Type BK-G40 · BK-G65 · BK-G100 and Type BK-G40T
· BK-G65T · BK-G100T" →
http://docuthek.kromschroeder.com/doclib/main.ph
p?language=1&folderid=400045&by_class=2&by_
lang=-1
(as
max
:
g
Decimal Pulse
place value V
Imp
in display in dm 3
3 1
2 10
ATEX explosion protection
The index EI3 is certified as an ATEX subassembly
and is marked as follows:
II 2 G Ex ib IIA T4 Gb
= Specific explosion protection mark
II = Equipment group for "non-mining"
2G = Equipment category 2 (zone 1) for gas
EX = Symbol for electrical equipment
built according to European standards
ib = Type of ignition protection:
i = intrinsically safe
b = suitable for use in zone 1
IIA = Explosion group for gases
T4 = Temperature class: maximum allowable
surface temperature: 135°C
Gb = Equipment protection level (zone 1)
The batteries and communications modules are
certified as parts of the electronic index. Use only
spare parts from Elster.
The electrical interfaces feature the following
parameters:
Pulse output:
– U = 26.6 V
i
– I = 250 mA
i
– P = 414 mW
i
– C = 0.012 µF
i
– L = 0 mH
i
For further technical data on diaphragm gas
meters BK, see:
"Operating instructions for diaphragm gas meters
BK-G1.6 to BK-G25" → http://docuthek.krom-
schroeder.com/doclib/main.php?language=1&folderi
d=400041&by_class=2&by_lang=-1
"Instruction Manual, Industrial Diaphragm Gas
Meters Type BK-G40 · BK-G65 · BK-G100 and
Type BK-G40T · BK-G65T · BK-G100T" → http://
docuthek.kromschroeder.com/doclib/main.php?
language=1&folderid=400045&by_class=2&by_
lang=-1

Disposal

Components, particularly batteries, are to be dis-
posed of separately.
On request, old units may be returned carriage
paid to the manufacturer, see page 8 (Contact)
in accordance with the relevant waste legislation
requirements.
GB-6