Pagina 35 di 93 Codice doc. 1080622209
Versione: 2022_02_21
Salvo modifiche tecniche
9
Application Conditions
Calculator
Temperature range medium
heat
°C
0 – 150
Temperature range medium
cooling
°C
0 – 50
Mechanical class
M2
Electromagnetic class
E2
Protection class
IP54
Ambient temperature in the
field
°C
5 – 55 at 95 % relative humidity
Transport temperature
°C
-25 – 70 (for maximal 168 h)
Storage temperature
°C
-25 – 55
Pulse input interface
microcontroller CMOS input class IB according to EN 1434-2: 2015
Pulse values
standard
see type identification label
TX versions adjustable pulse values will be shown in the display: 1; 2,5; 10; 25;
100; 250; 1000; 2500
Flow meter requirements
Pulse output device
class OA (reed contact) according to EN 1434-2: 2015;
class OC (open collector) according to EN 1434-2: 2015
Point of installation
outlet flow (standard) / inlet flow;
calculator can be set on location, only once, before start of
operation by pushing the button or alternatively using the „Device
Monitor“ software
Maximum input frequency
Hz
10
Pulse length and pulse pause
at least 25 ms pulse length; at least 50 ms pulse pause
Temperature sensor requirements
Platinum precision resistor
Pt 500
Cable length (unshielded)
m
up to 10 in 2-wire technique
Installation
direct mounted; in temperature pockets
Application heat metering
EU (MID) identification on the temperature sensors
Application cooling metering
national approval as a temperature sensor for cooling meters*)
Application heat/cooling metering
EU (MID) identification and separate national approval as a
temperature sensor for cooling meters*)
*) Requirements in countries other than Germany may be different.
10
Information Messages
When the instrument has detected an information message, the message symbol is displayed:
The specific message can be found at menu item 6 ‘Information message’ in level 1 / main loop
(see
section 8, Display). The message code is displayed alternately in binary and hexadecimal form.
The instrument recognizes seven message causes, which can also occur in combination with each other.
Hexadecimal display
Description
Binary display
H 80
Low battery
1 at first place
H 40
Instrument has been reset
1 at second place
H 20
Electronics defective
1 at third place
H 08
Temperature sensor inlet flow short circuit
1 at fifth place
H 04
Temperature sensor inlet flow cable break
1 at sixth place
H 02
Temperature sensor outlet flow short circuit 1 at seventh place
H 01
Temperature sensor outlet flow cable break
1 at eighth place
