Grand Meyer® MST-91Ai
Wi-Fi controller MST-91Ai is designed to control cable systems for anti-icing of roofs, open areas, pipelines and tanks, as well as any other cable systems for electric heating.
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MST-91AI SPECIFICATIONS
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Power supply
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~100 - 240V, 50(60) Hz
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Power consumption
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no more than 5 W
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Number of control channels (relay)
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1
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Load current of control relay contacts
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16A/250V
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Relay contact type
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NO (SPDT)
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Number of temperature sensor channels
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1
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Temperature measuring range
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from -40⁰С to +120⁰С
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Temperature measurement accuracy
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± 1,0⁰С
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Number of channels for water and precipitation sensors
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channel: - 1 sensor (TS-2)
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Number of gradations of measurement levels (sensitivity) of water and precipitation sensors
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2 (0-dry, 1-presence of water/precipitation)
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WiFi standard
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802.11b/g/n
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WiFi frequency range
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2.4 GHz
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Operating temperature range
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from -30⁰С to +80⁰С at humidity up to 80%
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Cross-section of wires of sensor cables connected to the terminals of the weather station
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up to 2.5 mm²
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Cross-section of wires of control relay and power supply cables
connected to the terminals of the weather station
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up to 2.5 mm²
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Degree of protection
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IP20
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Dimensions
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86 (H) x 90 (W) x 65 (D) mm
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Body color
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light gray
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Mount type
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DIN rail
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Internal fuse rating
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0.5 A
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Weight
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155 g
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Compatible temperature sensor
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Grand Meyer TS-1
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Compatible moisture and precipitation sensor
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Grand Meyer TS-2
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Warranty
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3 years
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Certified
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СЕ, ЕАС
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The controller Grand Meyer MST-91Ai was produced using dual-core microprocessor technology on the real-time operating system RTOS, which made it possible to build a very reliable snowmelt system.
The use of a number of unique settings and algorithms, our own weather service and the technology of remote sharing of sensors between weather stations made it possible to create a flexible and cost-effective new generation snowmelt system.
The controller Grand Meyer MST-91Ai is configured and controlled through the built-in web interface, which ensures its correct and convenient display on devices with different screen resolutions, both on a mobile phone and a computer.
Supported browsers: Chrome, Opera, Firefox, Safari, IE, EDGE. It is also possible to connect the weather station to the Telegram messenger for real-time notification of various events in the management of the weather station (turning on, turning off heating zones, etc.).
The controller Grand Meyer MST-91Ai can operate in fully automatic mode via the Internet weather service (without the use of sensors or use weather service data when they are turned off).
The controller Grand Meyer MST-91Ai supports the following types of sensors
Temperature sensor (air, surface)
TS-1
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TS-1 SPECIFICATIONS
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Temperature measuring range
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from -40⁰С to +120⁰С
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Temperature measurement accuracy
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± 1.0⁰С
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Active sensor element/type
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NTC (12 kOhm at +25⁰C)
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Sensor dimensions
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6 (Dia.) x 30 (L.) mm
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Sensor cable length
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3 m
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Max. sensor cable extension length
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100 m
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Extension cable
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2-wire with a cross section of
at least 0.75 mm²
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Certified
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СЕ, ЕАС
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Installation and connection of the sensor Grand Meyer TS-1
Sensor for the presence of melt water and precipitation
ТS-2
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WSM-13 SPECIFICATIONS
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Power supply
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~230V (-15%, +10%), 50Hz
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Power consumption
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8 - 16 W (in dry condition)
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Type
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Self-regulating cable
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Operating temperature range
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-60⁰С to +65⁰С
(+85⁰C off)
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Number of gradations of levels of precipitation measurements
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2 (0-dry, 1-presence of water/precipitation)
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Degree of protection
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IP67
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Sensor cable length
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3 м
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Max. sensor cable extension length
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100 m
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Extension cable
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3-wire shielded
with a cross section of at least 0.75 mm²
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Overall dimensions of the active surface of the sensor
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11.5 x 500 mm
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Certified
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СЕ, ЕАС
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The sensor is made of a 50 cm piece of self-regulating cable, the heat release of which varies depending on the properties of the environment (temperature, precipitation, melt water and humidity) in which it is located. The current dependence of the sensor, proportional to its heat release, is analyzed by the meteorological station, which, based on the data received, issues a command to turn on / off the heating sections of the heating system.
Installation and connection of the sensor Grand Meyer TS-2
Wiring diagram
