Temperature and Humidity Transmitter

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Temperature and Humidity Transmitter

Equipped with interchangeable probe inputs or fixed/integrated probes, provide highly accurate analog or digital output measurements for a wide range of industrial applications—including process monitoring and control, cleanrooms, controlled environments, data centers, building management systems, storage areas, swimming pools, museums and art galleries, and many others.

| HF1 Series

The HygroFlex1 series is a new, cost-effective transmitter

for measuring relative humidity and temperature in the

HVAC field. The HF1 is equipped with the Hygromer® IN-1 sensor and offers exceptional value for money. By selecting the optional HW4 software, you can adjust the measurement range and calibrate and characterize the transmitter

Feature

√ 23℃ ±5℃ accuracy: ±2%RH / ±0.3℃; ±1.5%RH / ±0.2℃ (upgraded version)
√ Measurement range: -20~60℃ / 0~100%RH
√ Compact size, easy to install
√ USB port
√ Factory calibration: 35% RH, 80% RH

| HF3 Series

The HygroFlex3 series transmitters are suitable for applications requiring precise measurement of temperature and humidity. From the HVAC industry to greenhouses and museums, from storage rooms and libraries to subways and office environments, the HF3 series transmitters can meet all these needs.

Feature

√ 23℃ ±5℃ accuracy: ±2%RH / ±0.2℃
√ Measurement range: -40~60℃ / 0~100%RH
√ Operating range: -40~60℃ / 0~100% RH, with display: -10~60℃
√ Analog output can be software-configured.
√ Configuration interface
√ Three-point calibration at 23℃, 10%, 35%, and 80% RH
√ Dew point output

| HF5 Series

The HygroFlex5 series is compatible with all HC2 probes equipped with the AirChip chip. Thanks to the high precision of these probes, the HF5 series transmitters are capable of performing highly accurate measurements. This transmitter series features several innovative technologies that make parameter setting and calibration exceptionally convenient.

Feature

√ Up to two interchangeable HC2A probes
√ Accuracy: ±8% RH and ±0.1℃ at 10–30℃ (commonly used accuracy)
√ Measurement range: -50~100℃ / 0~100%RH (commonly used range)
√ Operating range: -40~60℃ / 0~100% RH, with display: -10~60℃
√ Digital output can be used in combination with analog output.
√ Can be used as a system verification simulator (requires operation via HW4 software and communication cable).
√ Configuration interface

| CRP5 Series

The CRP5 cleanroom panel is equipped with a diaphragm sensor for differential pressure measurement, offering excellent performance. The CRP5 features both analog and digital communication capabilities, making it easy to integrate into any monitoring system. It meets GMP validation requirements, has been carefully designed, and is specifically optimized for laboratory and cleanroom applications.

Feature

√ Specifically designed for sterile rooms
√ The detachable temperature and humidity probe makes adjustment and cleaning easier.
√ Compatible with FDA 21 CFR Part 11 and GAMP
√ Accuracy: Pressure ±1.0%FS; Temperature ±0.2℃; Humidity ±1.5%RH
√ Digital communication via Ethernet RJ45 or TCP/RTU network communication protocols
√ Analog and digital signal input
√ The front panel features a differential pressure measurement and calibration interface.
√ Relay or color TFT alarm
√ Highly corrosion-resistant glass front panel

| HygroFlex5-EX

The HygroFlex5-EX series consists of a dual-channel transmitter, a product specifically developed for precise measurement of temperature and humidity in explosive environments, and complies with international standards. The ROTRONIC HF5-EX series transmitters feature a robust aluminum housing and come equipped with a display. Paired with a durable stainless steel probe, they can be used in Zone 0/Zone 20.

Feature

√ Measure relative humidity and temperature
√ Accuracy: ±8% RH and ±0.1℃ at 10~30℃
√ Can output dew point and other psychrometric calculation parameters
√ Can operate safely in hazardous explosive areas
√ Intrinsically Safe Circuit Design
√ No intrinsically safe power supply required
√ Interchangeable stainless steel probe
√ Two temperature certifications (T4/T5)

| HF1 / HF3

	HF1	HF3
Type	Fixed probe
Application	HVAC
Scope of work	-20-50 Celsius / 0-100 %RH	-40 to -60 Celsius / 0-100 %RH
Accuracy @ 23 Celsius	±2% RH (10-90% RH) / ±0.3 K	<±2 %RH / ±0.3 K
Long-term stability	<1.5% rH/ Year	<1% RH/ Year
Sensor	Humidity: Rotronic IN1 / Thermistor	Humidity: Rotronic IN1 / PT100 A Level
Show	Optional with or without
Power supply	12-28 VAC / 15-40 VDC	HF32 2 Line: 10-28 VDC HF33 3/4 Line: 18–40 VDC / 13–28 VAC
Output parameter	Humidity and temperature	Humidity and temperature
Output	2 An analog output 2 Line or 3/4 Line, freely expandable
Output signal	2 Line: 4-20 mA 3/4 Line: 0(4)-20 mA 0–1/5/10 VDC
Housing type	Wall mounting and pipe installation	Wall-mounted, pipe and wall installation
Housing material	ABS
Size	Wall-mounted 105x172 mm	Wall-mounted 101x182 mm

| CRP5 Series

	CRP5
Accuracy @ 23 ±5 Celsius	±1.0% Full scale (Pa)
Parameter	Differential pressure, temperature, humidity, digital and analog outputs
Probe	HC2-CRP ; Replaceable: Any HygroClip2 Probe
Scope of application	-5...60 Celsius (23...140°F) / 0...100% RH
Measurement principle	Diaphragm sensor
Measurement range	±50 Pa / ±100 Pa / ±250 Pa / ±500 Pa & -100...200 Celsius ( Depends on the probe. ) / 0...100 %RH
Withstand voltage	0.7 bar (70,000 Pa)
Pressure connection	Front: Hose connector Ø 6 mm x 10 mm Next: Hose connector Ø 4 mm x 10 mm
Medium	Air and non-corrosive gases
Precision analog output	±5 mV ( Voltage output ) ±20 mu A ( Current output )
Digital output	6 Solid-state relay for roads
Switched-capacitor	<50 VDC @ <2A , when considering polarity <35 VAC @ <1A , without considering polarity
Zero drift	Compensation ( Manual or automatic zero adjustment )
Power consumption	20...48 VDC / 18...35 VAC <500 mA
Display type	Colorful TFT Show
Electrical connection	On the back screw terminal
Measurement interval	1 s
Menu Navigation	4 An optical key
Software update	Through HW4 Software
Analog output	4 The path can be freely configured.
Analog output signal ( Standard )	0 / 4...20 mA or 0...1 / 5 / 10 V
Communication interface	Ethernet (Modbus TCP, HW4) / RS-485 (Modbus RTU, HW4)
Permissible load	>10 kΩ ( Voltage output ) <500 Ω ( Current output )
Fire rating	Compliant UL94-HB
Shell	Front panel: Glass Back panel: Steel plate
IP Protection level	Front: IP65 ( Sensor removed ) Behind: IP20
Install	Wall-mounted
Service interface	UART
FDA / GAMP	FDA 21 CFR Part 11 / GAMP5
CE / EMC Consistency	EMC Instruction 2004/108/EC
Storage and Transportation Conditions	-5...60 Celsius (23...140°F) / 0...100% RH
Size	180 x 300 x 72 mm
Weight	1,700 g ( With humidity sensor ) 1,550 g ( Does not include a humidity sensor )

| HF5 / HF5-EX

	HF5	HF5- EX
Order number		HF520 EX
Type	1x Interchangeable HC2A Probe
Application	Pharmaceutical industry	Oil, natural gas, steel mills
Scope of work	-40 to -60 Celsius / 0-100 %RH ； -10-60 °C display
Measurement range	-100-200 Celsius / 0-100 %RH , depending on the specific probe
Compatible probe	HC2A-S Series, HC2A-IC/IM/IE，HC2-CP，HC2-HK	HC2-SM-EX / HC2-IM-EX / HC2-IE-EX / HC2-LDP-EX
Probe cable length	5m Passive; accessible 100m Active cable	2/5/10 m
Accuracy @ 23°C	±0.8 %RH / ±0.1 K ( Normal value ) , depending on the specific probe
Long-term stability	<1 %RH ( Normal value ) , depending on the specific probe
Sensor	Depends on the specific probe.
Show	Optional with or without
Power supply	HF52 2 Line: 10-28 VDC HF53 3/4 Line: 15–40 VDC / 12–28 VAC HF54 Current isolation 9…36 VDC HF56 Current isolation 100-240 VAC	10…28 VDC
Output parameter	Humidity and temperature
Calculation parameters	All humidity value calculations
Output	2 An analog output 2 Line or 3/4 Line, optionally with freely expandable digital output (LAN. RS-485)	2 One analog output, 2 Line
Output signal	2 Line: 4-20 mA ， 3/4 Line: 0(4)-20mA ， 0–1/5/10 VDC	2 Line 4…20 mA
Housing type	Wall-mounted and duct-mounted installation
Housing material	ABS	Aluminum
Size	Wall-mounted 160x206 mm (with 🛡️) HC2A-S )	Wall-mounted 160x210 mm (Contains HC2-SM-EX )