HD33MT Weather Station Data Logger

Weather station data logger for remote environmental monitoring.

4 analog inputs, 2 counting contact inputs, RS485 Modbus and SDI-12 Master port
4G/3G/GSM(2G)/GPRS transmission by e-mail, FTP or HTTP server, with SMS and e-mail alarms
IP65 polycarbonate housing, solar-panel or DC power, optional 12 V / 3.4 Ah backup battery

Quantity

Overview

The Senseca HD33MT is a weather station data logger for remote monitoring of environmental measurements such as temperature, humidity, wind speed, rainfall and solar irradiance, suited to meteorology, agriculture, smart cities and industrial monitoring. Its flexible input structure has 4 independently configurable analog inputs, 2 voltage-free counting contact inputs, an RS485 port with Modbus-RTU (or Modbus TCP/IP on Ethernet versions) and an SDI-12 Master port. A 4G module, backward compatible with 3G, GSM(2G) and GPRS, sends data by e-mail, FTP or to an HTTP server, while control by SMS or TCP/IP connection reduces travel to remote sites. The IP65 polycarbonate housing mounts on masts up to 60 mm and operates from -40 to +70 °C on versions without LCD, and solar-panel power, external DC supply and an optional 12 V / 3.4 Ah backup battery keep it logging in off-grid locations.

Typical applications

Remote weather stations
Meteorology
Agriculture
Smart cities
Industrial monitoring
Off-grid environmental monitoring sites

Key Features

4 independently configurable analog inputs: 0…50 mV, -50…+50 mV, 0…1 V, 0…10 V, 0/4…20 mA, Pt100, Pt1000, thermocouple, potentiometer, pyrgeometer
2 voltage-free counting contact inputs for rain gauges and anemometers
RS485 port with Modbus-RTU or Modbus TCP/IP, configurable as Master or Slave, plus SDI-12 Master port
Measuring and logging intervals from 1 s to 1 hour, with circular or stop-when-full memory
Rainfall functions: maximum rainfall rate, daily, total and per-interval rainfall
High and low alarm thresholds with hysteresis and delay, SMS/e-mail alerts and 2 voltage-free NO alarm outputs
Switched power outputs to power external sensors only during acquisition
HD35AP-S PC software for configuration, real-time display and data download
Options: Ethernet module, internal barometric sensor and custom LCD

Benefits

Remote data access: 4G/3G/GSM/GPRS sends measurements by e-mail, FTP or HTTP server without site visits
Sensor flexibility: 4 analog inputs, 2 counting inputs, RS485 Modbus and SDI-12 connect weather station sensors
Off-grid operation: solar-panel power and an optional 12 V / 3.4 Ah battery support remote installations
Outdoor-ready housing: IP65 polycarbonate housing operates at -40…+70 °C without LCD
Actionable alarms: high and low thresholds trigger SMS/e-mail alerts and 2 voltage-free NO outputs
Low power consumption: operates for weeks without recharging the internal battery

Specifications

GENERAL SPECIFICATIONS
Power supply	With rechargeable battery: 18…30 Vdc Without rechargeable battery: 7…30 Vdc (12…30 Vdc with Ethernet module)
Power consumption @ 12 Vdc	Without mobile network activity: < 4 mA without Ethernet module; ~200 mA with Ethernet module During mobile network activity: < 1 A peak
Battery	Optional internal lead 12 V / 3.4 Ah Maximum charge current 1 A
Measuring and logging interval	From 1 s to 1 hour (1, 2, 5, 10, 15, 30 s / 1, 2, 5, 10, 15, 30, 60 min)
Internal memory	Circular management or stop logging if memory is full From 242,850 to 858,070 samples, depending on the number of detected quantities
Alarm	E-mail and SMS Two voltage-free normally open (NO) contact alarm outputs, max 300 mA @ 30 Vdc resistive load
Display	Optional custom LCD
Cellular connectivity	4G/3G/GSM(2G)/GPRS, external antenna
Internal clock drift	±2 ppm (0…+40 °C) / ±5 ppm (-40…+70 °C)

INPUTS AND PORTS
Analog inputs	4 independently configurable inputs (0…50 mV, -50…+50 mV, 0…1 V, 0…10 V, 0…20 mA or 4…20 mA, Pt100, Pt1000, thermocouple, potentiometer, pyrgeometer)
Counting inputs	2 voltage-free counting contact inputs (switching frequency 50 Hz max., hold time 10 ms min.)
Digital ports	1 RS485 port with Modbus TCP/IP or Modbus-RTU protocol, configurable as "Master" or "Slave" 1 SDI-12 "Master" port
Communication ports	Mini-USB connector (for connection to PC) RJ45 connector (only with the optional Ethernet module)
External probes connection	M12 connectors or cable glands

INPUT SPECIFICATIONS
Pt100 / Pt1000	Range -200…+650 °C, resolution 0.1 °C, accuracy ±0.1 °C (excluding probe error), 2, 3 or 4 wires
Thermocouple	Types K, J, T, N, E (non-isolated inputs, use thermocouples with isolated hot junction) Range: K -200…+1370 °C; J -100…+750 °C; E -200…+750 °C; T -200…+400 °C; N -200…+1300 °C Resolution 0.1 °C, accuracy ±0.1…0.2 °C depending on type and range (excluding probe error)
0/4…20 mA	Internal shunt 50 Ω, resolution 16 bit, accuracy ±2 µA
0…50 mV / -50…50 mV / 0…1 V / 0…10 V	Input resistance 100 MΩ, resolution 16 bit, accuracy ±0.01% f.s.
Potentiometer	10 kΩ typical, resolution 16 bit, accuracy ±0.01% f.s.
Atmospheric pressure (optional internal sensor)	Piezoresistive, 300…1100 hPa, resolution 0.1 hPa Accuracy ±0.5 hPa (800…1100 hPa) @ T=25 °C; ±1 hPa (300…1100 hPa) @ T=0…50 °C
Rainfall measurement	Maximum rainfall rate, daily rainfall, total rainfall, rainfall in the logging interval

ENVIRONMENTAL & MECHANICAL
Operating conditions	Version without LCD: -40…+70 °C / 0…100 %RH Version with LCD: -20…+70 °C / 0…100 %RH
Weight	2.8 kg approx.
Housing	Dimensions: 270 x 170 x 110 mm (excluding external antenna) Material: Polycarbonate (PC) Protection degree: IP65
Installation	Fixing to a max 60 mm diameter mast

ORDERING CODES	HD33 [LCD] MT [Barometric sensor] . [Connectivity]
LCD	Blank = without LCD L = with custom LCD
Internal barometric sensor	Blank = without internal barometric sensor 4b = with internal barometric sensor
Connectivity	4 = 4G/3G/GSM(2G)/GPRS 4/E = 4G/3G/GSM(2G)/GPRS + Ethernet
Note	Supplied with the HD35AP-S software, downloadable from the website. Battery, probes, sensors and USB cable CP23 must be ordered separately. SIM card and Ethernet cable (for models with Ethernet communication) are not included.