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Vemer Värmare AHT-Pt100

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Vemer S.p.A.
I - 32032 Feltre (BL) • Via Camp Lonc, 16
e-mail: info@vemer.it - web site: www.vemer.it
V3IS01160-010
Mod. AHT-Pt100
Manuals
download
PDF
03-2023
REFERENCE STANDARDS
Compliance with Community Directives:
2014/35/UE (LVD) and 2014/30/UE (EMCD)
is declared with reference to the following standards:
• EN 61010-1 • EN 61326
information to users pursuant to art. 14 of the directive
2012/19 / EU of the european parliament and of the council
of 4 july 2012 on waste electrical and electronic equipment (WEEE)
If the crossed-out bin symbol appears on the equipment or packaging,
this means the product must not be included with other general
waste at the end of its working life.
The user must take the worn product to a sorted waste center,
or return it to the retailer when purchasing a new one.
Products for disposal can be consigned free of charge (without any new purchase obligation)
to retailers with a sales area of at least 400 m
2, if they measure less than 25 cm.
An efficient sorted waste collection for the environmentally friendly disposal of the used device
or its subsequent recycling, helps avoid the potential negative effects on the environment
and people’s health, and encourages the re-use and/or
recycling of the construction materials.
1
User Manual
ANALOG HEAT REGULATORS
Read all the instructions carefully
The AHT-Pt100 heat regulators are analogue temperature regulators
with compact dimensions 48x48mm with Pt100 thermoresistor input signal,
which perform type 1B actions (standard CEI EN 60730-1). They perfectly
suit applications that require where ease of use and sturdiness, thanks to the
central knob for temperature regulation and the signaling LEDs on the front to
indicate the intervention of the output relay (red led) and the power supply of
the instrument (green led).
Code Model Description
VE253100 AHT-Pt100 1P4U 48x48 Heat regulator for Pt100 probes
SAFETY WARNINGS
During the installation and operation of the instrument, proceed in
accordance with the instructions below:
1) The instrument should be installed by a qualificated operator following the
installation diagrams carefully
2) The instrument should be installed in a panel from which no access can be
gained to the terminals af ter installation
3) Do not power or connect the instrument if any part of it is damaged
4) In the power supply network a bipolar disconnection must be present
5) A protection device against over-currents should be installed in the electrical
system, upstream of the device.
6) The instrument guarantees reinforced insulation between the low voltage
parts (250 Vac) and the front and the very low voltage parts and between
the power supply and the relay output.
7) The instrument is designed for installations with over-voltage category II
and pollution level 2, in accordance with the EN 61010-1 standard
8) Any external switches connected to the heat regulator must guarantee,
at the operating temperatures, a minimum insulation of 250 Vac or must be
protected by an equivalent insulation
TECHNICAL CHARACTERISTICS
• Power supply: 24 ÷ 240 Vac/Vdc (±10%) 50/60 Hz
• Current input: ~3 VA
• Terminal block: 8 screw terminals for cables with a maximum section
of 2.5 mm2
• Output: 1 relay with change-over contact 8 (3) A /250 Vac
• Regulation type: ON/OFF (only heating mode)
• Hysteresis: 1 ÷ 10 °C selectable by trimmer
• Precision: ±2% full-scale
• Measuring scale: 0 ÷ 350 °C
• Connectable probes: Pt100 thermoresistance
• Operating temperature: 0 ÷ 50 °C
• Operating humidity: 35 ÷ 95% not condensing U.R.
• Storage temperature: -25 °C ÷ 60 °C
• Protection degree: IP20 / IP65 (on the front with gasket)
• Container: in self-extinguishing plastic material V0 in accordance with UL94
4INSTALLATION
• To install the heat regulator drill a 45.5x45.5 mm square hole.
• Fix the instrument to the panel using the appropriate bracket. To obtain the
declared frontal protection degree, is recommend the use of a gasket
(not included in the package).
• Make sure that the instrument is suitably ventilated to avoid overheating.
• Avoid installing the instrument in places where high humidity can generate
condensation or where dirt could lead to the introduction of conductive
substances into the instrument.
• Install the heat regulator as far as possible from sources that can generate
electromagnetic disturbances, such as motors, telebrakers, relays, solenoid
valves, etc.
• Make sure that the cables of the probe are kept separate from the power
supplying cables or the positive leads to avoid electromagnetic disturbances.
The use of shielded probe cables is recommended; the shielding must be
earthed only in one point, usually near the instrument.
1 Terminal block on the back of the
device
2 Setpoint setting knob
3 Red LED for output status signalling
4 Green LED for power supply
signalling
5 Trimmer for hysteresis adjustment
2INSTRUMENT DESCRIPTION and DIMENSION
1
2
5
4
3
24 ÷ 240
Vac/Vdc
C NC NO
1 2 3 4 5 6 7 8
Input
NL
3CONNECTION DIAGRAM
5OPERATION
• AHT-Pt100 heat regulators work in reverse-heating mode, which means that
they activate the output if the temperature measured is lower than the set one
(setpoint).
• To use the heat regulators simply set the setpoint by rotating the knob placed
on the front and position the orange arrow on the desired temperature value. The
triggering of the relay is signalled by the switching on of the red LED.
• The ON/OFF control operates in asymmetrical mode with hysteresis selectable
from a minimum of 1°C to a maximum of 10°C using the trimmer located on the
upper side of the device.

Produktspecifikationer

Varumärke: Vemer
Kategori: Värmare
Modell: AHT-Pt100

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