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- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality
- Flow
- Modbus | Wireless Modbus
- Room controller
- EtherCAT P
- Accessory
Description
Surface contacting temperature sensor
THERMASGARD® ALTM1 - Modbus - SD
Calibratable surface-contact temperature measuring transducer (compact variant)
THERMASGARD® ALTM1 - Modbus-SD, with Modbus connection (Y-adapter),
in an impact-resistant plastic housing with quick-locking screws,
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 %)
Accuracy
typically ± 0.2 K at +25 °C
Zero point offset
± 10 °C
Ambient temperature
Measuring transducer –30...+70 °C
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)
(Perfect Sensor Protection)
Measuring range
–50...+150 °C
Tmax up to +100 °C (compact variant)
Tmax up to +100 °C (compact variant)
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
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)
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)
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)
Standards
CE conformity, electromagnetic compatibility according to
EMC directive 2014/ 30/ EU, EN 61326
EMC directive 2014/ 30/ EU, EN 61326
Optional
display with illumination, two-line,
programmable, cutout approx. 36 x15 mm (W x H),
for displaying the actual temperature, error message or
an individually programmable display value
programmable, cutout approx. 36 x15 mm (W x H),
for displaying the actual temperature, error message or
an individually programmable display value
Features
Baud rate: 9600, 19200, 38400 baud