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- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality
- Flow
- Rymaskon
- Modbus | Wireless Modbus
- EtherCAT P
- Accessory
Description
Surface contacting temperature sensor
THERMASGARD® ALTM 2 - Modbus - SD
Calibratable surface-contact temperature measuring transducer (detached variant)
THERMASGARD® ALTM2 - Modbus-SD, with Modbus connection (Y-adapter),
in an impact-resistant plastic housing with quick-locking screws,
cable sensor with pipe feeder, incl. strap, optionally with/ without display,
measures temperature (–50...+150 °C).
The pipe surface-contact sensor is used to detect the temperature on lines, pipes
(e.g., cold and warm water) or on heating sections for heating control.
Modbus sensor SD with RS485 Modbus interface (not galvanically isolated), selectable
bus termination resistance, DIP switch for setting the bus parameters and bus address
in current-free state, internal LEDs for telegram status display (illuminated, with
customised programming). Uses internal diagnostics to detect sensor breakage or
sensor short circuit as errors. The sensor is factory-calibrated; an environmental
precision adjustment by an expert is possible.
Technical details
Power consumption
< 1,0 W/ 24 V DC
< 2,2 VA/ 24 V AC
< 2,2 VA/ 24 V AC
Voltage supply
24 V AC (± 20 %) and
15…36 V DC (± 10 %)
15…36 V DC (± 10 %)
Temperature deviation
typically ± 0.2 K at +25 °C
Zero point offset
± 10 °C
Ambient temperature
Measuring transducer –30...+70 °C
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
Error detection
sensor breakage, sensor short circuit
Signal filtering
0,3 s / 1 s / 10 s
Process connection
endless metal strap and metal tightener
(included in scope of delivery)
(included in scope of delivery)
Strap dimensions
Ø = 13 - 92 mm (¼ - 3"), L = 300 mm
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Communication
RS485 interface, not galvanically isolated,
Bus termination activatable via DIP switches.
Bus termination activatable via DIP switches.
Sensor
Pt1000, DIN EN 60751, class B (Perfect Sensor Protection at IP68)
Measuring range
–50...+150 °C
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
address range 0...247 selectable
Insulating resistance
100 MΩ,
at +20 °C (500V DC)
at +20 °C (500V DC)
Sensor protection
pipe feeder made of stainless steel V4A (1.4571),
Ø = 6 mm, L = 50 mm
Ø = 6 mm, L = 50 mm
Electrical connection
0.14 - 1.5 mm² via terminal screws
Cable connection
cable gland, plastic 2x M 12 x 1.5 (Y-adapter);
with strain relief, exchangeable,
max. inner diameter 6 mm
with strain relief, exchangeable,
max. inner diameter 6 mm
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Housing dimensions
72 x 64 x 43.3 mm (Tyr 1 with Display)
sensor cable
Silicone, SiHF, 2 x 0,25 mm²; cable length (KL) = 1.5 m
(other lengths and jacket materials, e.g. PTFE or
glass fibre with steel mesh, available on request)
(other lengths and jacket materials, e.g. PTFE or
glass fibre with steel mesh, available on request)
Protection type
IP 65 (according to EN 60 529) Housing tested,
TÜV SÜD, Report No.713139052 (Tyr 1)
TÜV SÜD, Report No.713139052 (Tyr 1)
Protection type (sensor)
IP 65 (according to EN 60 529) sleeve humidity-tight (standard)
IP 68 (according to EN 60 529) sleeve water-tight (optional)
IP 68 (according to EN 60 529) sleeve water-tight (optional)
Standards
CE conformity, electromagnetic compatibility according to
EMC directive 2014/ 30/ EU, EN 61326
EMC directive 2014/ 30/ EU, EN 61326
Features
Baud rate: 9600, 19200, 38400 baud