H3431 temperature and humidity regulator with RS485 output

code: H3431

Humidistat, thermostat with two relay outputs. Outdoor, indoor use.

Relative humidity, temperature probe on a cable. Measured values are also converted to other humidity interpretation: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy. Three two-state inputs.

Included in delivery:

Traceable calibration certificate
Quick start manual
Free program TSensor for configuring of the transmitter is ready to Download

Free program SensorReader for logging values from one transmitter via RS485 to a PC disk file is ready to Download

Features Technical Data Download Optional accessories We recommend

Features

Humidistat is designed for two-state control of e.g. heating, ventilation, humidifier, dehumidifier, etc.
Transmitter is equipped with two relay outputs for alarm indication or control of external devices. Each relay can be assigned to any measured or computed value. For each relay setting of delay, hysteresis, audible alarm is enabled.
Measured temperature and relative humidity is recalculated to other humidity interpretations - dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy.
Parameters are easy adjustable from regulator keyboard or from the computer. Large dual line LCD for simultaneous display of temperature, relative humidity or other calculated humidity interpretation is an advantage.
State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitter is designed for use in non-aggressive environment.

Transmitter is also equipped with three binary inputs for detection of two-state events - e.g. water, smoke, glass break detection, door contact.

HUMIDISTAT APPLICATIONS

- temperature and humidity control
- monitoring of temperature, humidity:

building management and automation
server rooms
telecommunication devices
warehouses, glasshouses
manufacturers
museums, archives, galleries
air-conditioned rooms, HVAC
weather stations
Serial output RS485 is galvanically isolated from other circuitry to prevent collisions on the RS485 bus. The transmitter works with ModBus RTU communication protocol or with Advantech ADAM compatible protocol. Protocol is user selectable in special configuration mode by means of the PC. Serial link enables to read actual readings and modify transmitter configuration. Instrument works always in slave mode, i.e. responds only to master device query. Transmitters have the address space available from 1 to 255. Communication speed is 110 to 115200Bd.

For acquiring values from several transmitters connected to RS485 bus, third party software is necessary to use.

Tested functionality is with programs:

LabVIEW from National Instruments, TIRS.NET, ControlWeb, EasyView.

Relative humidity range

Figure: Relative humidity operating range

Accuracy of dew point measurement

Figure: Accuracy of dew-point measurement

Technical Data

Technical parameters	Value
Output	RS485
Measured Value	Relative Humidity + Temperature
Construction Type	With T+RH Probe On Cable
Design	Industrial
Temperature Measuring Range	-30 to +105°C
Relay Output	Yes
Two-State Input	Yes
Lcd Display	Yes
Maximum switching voltage, current, power of relay output	50V, 2A, 60VA
Audible alarm	from built-in beeper - switchable
Relative humidity range	0 to 100%
Accuracy of relative humidity measurement	±2.5% relative humidity from 5 to 95% at 23°C
Accuracy of temperature output	±0.4°C from -30 to +100°C ±0.4% from reading over +100°C
Available temperature units	degrees Celsius, Fahrenheit
Accuracy and range of dew point temperature output - for more details see graphs	±1.5°C at ambient temperature T<25°C and RH>30% range -60 to +80 °C
Accuracy and range of absolute humidity output	±1.5g/m3 at ambient temperature T < 25°C range 0 to 400 g/m3
Accuracy and range of specific humidity output	±2g/kg at ambient temperature T < 35°C range 0 to 550 g/kg
Accuracy and range of mixing ratio output	±2g/kg at ambient temperature T < 35°C range 0 to 995 g/kg
Accuracy and range of specific enthalpy output	±3kJ/kg at ambient temperature T < 25°C range: 0 to 995 kJ/kg
Signal for binary inputs	from voltage-less contact, open collector or two-state voltage signal. Inputs are not galvanically isolated.
Minimum pulse length at binary input	500 ms
Voltage at open contact	3.3 V
Low voltage level	0 to +0.5 V
High voltage level	+3.0 to +30V
Temperature operating range	-30 to +80°C
Temperature operating range of LCD display	readable to operating temperature +70°C, it is recommended to switch OFF the LCD over +70°C
Temperature compensation of the humidity sensor	all temperature range
Filtering ability of sensor cover	0.025mm - filter with stainless steel mesh
Communication protocol	ModBus RTU and Advantech ADAM compatible protocol
Communication speed	110 to 115200 Bd
IP protection	IP65 electronics, IP40 sensors
Power	9-30Vdc, power consumption approximately 1W
Length of the probe cable	1m, 2m or 4m optionally
Dimensions	136 x 159 x 45 mm (W x H x D), probe length 88 mm, probe diameter 18mm
Weight	approximately 420g - 1m probe
Warranty	2 years

	size
Instruction Manual	2 MB
Quick Start Manual	810 kB
Datasheet	1.1 MB
Declaration of Conformity	30 kB
Description of communication protocols	420 kB

Program TSensor - free configuration program for transmitters and transducers, Code: TSensor	more »
TSensor - free configuration program version 3.0.5.0	2.6 MB
TSensor - revision history	8 kB

Program SensorReader - free program for data read and store from one sensor, Code: SensorRead	more »
SensorReader - free program for data recording from one sensor, version 2.0.1.0	1.3 MB

Optional accessories

Other accessories

Ac/dc adapter 12V/450mA stabilized code: A1510	plastic sensor protection with stainless filter (black) code: F5200B	Multi-plate radiation shield code: F8000
PP4 Flat circular flange code: PP4	PP90 Right-angled stainless steel flange code: PP90	plastic gland for direct mounting of the humidity probe code: SP004
Humidity Standard 10%RH, set 5pcs code: HM023	Humidity Standard 80%RH, set 5pcs code: HM024	Vessel for adjustment and calibration of humidity code: MD046
The LD-12 flood detector code: LD12	The optical smoke detector SD-280 code: SD280	Motion detector JS20 code: JS20
Magnetic door contact SA-200-A code: SA200A	Magnetic door contact with cable length 10m code: SA200A-10	Magnetic door contact with cable length 15m code: SA200A-15
Magnetic door contact with cable length 2m code: SA200A-2	Magnetic door contact with cable length 20m code: SA200A-20	Magnetic door contact with cable length 30m code: SA200A-30
Magnetic door contact with cable length 5m code: SA200A-5	Power detector SP008 code: SP008	Tool for easy connection to WAGO terminals 233 for serial output transmitters code: SP006

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