Programmable humidity and temperature transmitters with 4-20mA output

photo of humidity transmitters

temperature
relative humidity
dew point temperature
absolute humidity
specific humidity
mixing ratio
specific enthalpy
compressed air measurement

Programmable temperature and humidity transmitters are equipped with temperature and relative humidity sensors. Measured values are also converted to other humidity interpretation - dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy. Degrees Celsius and Fahrenheit are user selectable. Transmitters are available in wall-mount, duct-mount and bar types. Also types with T+RH probe on a cable are available. Model T3111P is designed for compressed air measurement up to 25 bars. Transmitter contains a microprocessor based control circuitry in a durable plastic case with connection terminals and sensors in a filter with stainless steel mesh. Humidity transmitters are also available with two galvanic isolated 4-20mA outputs. Configuration of outputs and output range are user adjustable. Large dual line LCD for simultaneous display of T+RH or other humidity interpretation is an advantage. Display is possible to switch off. Computerized design ensures temperature compensation of the humidity sensor and fail indication. State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitters are designed for use in non-aggressive environment.

APPLICATIONS - measuring and control of air humidity at:

building HVAC management
building HVAC automation
warehouses
glasshouses
manufacturers
museums, archives, galleries
air-conditioned rooms
weather stations
compressed air measurement

Transmitters are approved and homologated by
RENAULT and by PSA (PEUGEOT / CITROEN) car manufacturers.

COMMON TECHNICAL PARAMETERS
Air 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:	±3g/m3 at ambient temperature T < 40°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
Temperature operating range of case with electronics:	-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
Range of humidity sensor temperature compensation:	-30 to +125°C
Current outputs - two-wire connection:	4-20mA, galvanic isolated with dual-output models
Configuration of outputs and output range:	user adjustable from the PC
Filtering ability of sensor cover:	0.025mm - filter with stainless steel mesh
Protection of the case with electronics:	IP65 electronics, IP40 sensors
Power:	9-30Vdc
Warranty:	two years

Humidity transmitters are available in the following types:

Type	Measured value	Maximum range of temperature measurement	Length	Output 1*	Output 2*	Note
T1110	RH	-30 to +80°C	75mm	0 to 100%RH	-	Outdoor, indoor use. Only relative humidity output 4-20mA. Also available with direct temperature RTD Pt1000 sensor output. Other sensors on request. Mechanical drawing Interconnection terminals Manual in pdf
T3110	RH+T	-30 to +80°C	75mm	0 to 100%RH	-30 to +80°C	outdoor, indoor Mechanical drawing Interconnection terminals Manual in pdf
T3111	RH+T	-30 to +105°C** probe including cable	probe cable 1,2,4m	0 to 100%RH	-30 to +105°C	T+RH probe with 1m cable. Cable lengths 2m or 4m available. Mechanical drawing Interconnection terminals Manual in pdf
New ! T3111P	RH+T	-30 to +105°C** probe including cable compressed air up to 25 bars	probe cable 1,2,4m	0 to 100%RH	-30 to +105°C	T+RH probe from hard anodized duralumin with 1m cable. Cable lengths 2m or 4m available. Compressed air up to 25 bars. Mechanical drawing Interconnection terminals Manual in pdf
T3113	RH+T	-30 to +125°C**	150mm	0 to 100%RH	-30 to +125°C	duct mount Mechanical drawing Interconnection terminals Manual in pdf
T3113D	RH+T	-30 to +125°C**	150mm	0 to 100%RH	-30 to +125°C	duct mount Interconnection terminals Manual in pdf
T3117	RH+T	-30 to +125°C**	700mm	0 to 100%RH	-30 to +125°C	bar type Mechanical drawing Interconnection terminals Manual in pdf
T0110	temperature					Thermometer

* Outputs are set to maximum range from the manufacturer (0 to 50°C, 0 to 100%RH).
To set other range by the user buying of SP003 cable is necessary - see Optional accessory.
Free configuration program TSensor for transmitter adjustment is ready to download anytime.

If different adjustment of outputs is required, please specify required output values (RH, T, Tdp, ..) and required ranges in the order. Adjustment is free of charge.

Any measured value - temperature, relative humidity, dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy can be assigned to each output of dual output transmitters. Also identical value can be assigned to both outputs.

Ordering example: Transmitter T3110, output 1: RH 10 to 90%, output 2: temperature 0 to 35°C

** Maximum temperature only at the measuring end with sensors. Maximum temperature +105°C for T3111 with cable probe is allowed also for the cable. Relative humidity at temperature over +85°C is limited in accordance with the graph. Near plastic case with electronics maximum temperature is +80°C.

Figure: Working range of humidity probe

humidity transmitter wiring

Typical application wiring of single output nad dual output transmitters

Calculation of minimum power voltage Uss for proper operation:
Uss min> Uo min + Imax * Rz,
where: Uo min= 9 V
Imax... approximately 20 mA
Rz... sensing resistor (shunt)
Both current loops (I1 and I2) are connected analogically, current loop I1 must be always connected.

Figure: T3111P humidity probe for compressed air up to 25 bars
- hard anodized duralumin, stainless steel mesh filter moulded in polycarbonate

measuring chamber
Figure: Flow chamber SH-PP for compressed air measurement up to 25 bars - stainless steel

Included accessory:

Traceable calibration certificate from the manufacturer, instruction manual. Calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.
Example of calibration certificate.

Free program TSensor for configuring of the transmitter is ready to download. SP003 cable for barometer adjustment via USB port is necessary to buy.

OPTIONAL ACCESSORY
	SP003	cable for humidity transmitter adjustment via USB port
	TxxxxL	Transmitter version with watertight male connector IP67 Lumberg RSFM4 instead of cable gland for easy connection/disconnection of the output. Specify please your order with letter L behind model code (e.g. TxxxxL)
	K1427	Female connector ELKA 4012PG7 for TxxxxL transmitters with male connector Lumberg for easy connection/disconnection of the output. Cable is easily connected to screw terminals of the connector. IP67 protection.
		Transmitter version with blind lid without LCD. Specify please the requirement in your order.
	F5200	grey sensor cover with filter from stainless steel mesh, filtering ability 0,025mm for transmitters T1110, T3110, T3113, T3117
	F5200B	black sensor cover with filter from stainless steel mesh, filtering ability 0,025mm for transmitter T3111
	F0000	sintered bronze sensor cover. Filtering ability 0.025mm.
	PP4	flat plastic circular flange for duct mounting
	PP90	right-angled stain-less steel flange for wall mounting
	SP004	plastic gland for direct mounting of the humidity probe to a 29 mm diameter hole
	MD036	self adhesive Dual Lock for easy installation
	SP005	Tool for easy wire connection to terminals
	F8000	Solar radiation shield for transmitters T3111 with T+RH probe on a cable
	SH-PP	Flow chamber for compressed air measurement up to 25 bars - stainless steel DIN 1.4301 inlet and outlet connection - G1/8 thread humidity probe connection - G1/2 thread screw-coupling not included
		accessory for calibration and adjustment of humidity transmitter by the user