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Multi-function Humidity and Temperature Transmitter - CAEL-HT Series

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• Remote probe w/M12 connector
• Metal probe reduce electromagnetic interference
• 2-wire 4-20mA with selectable physical quantity
• 0 - 100%RH measurement, temperature range up to +120°C (248°F)
• Probe pressure up to 10 bar
• IP-65 housing
• 1-point user adjustment
• Analog output and RS485

Model Number: CAEL-HT Series
Data Sheet:

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Product Specification

CAEL-HT Series Multi-function Humidity and Temperature Transmitter

SERIAL's latest CAEL series Temperature and Humidity transmitter meets the harsh environmental requirements for temperature and humidity measurement. Via temperature and relative humidity values, the output can be calculated dew point temperature, absolute humidity, wet bulb temperature, the specific enthalpy and other parameters of humidity.

CAEL series Temperature and Humidity transmitter supported wall mount type, duct type and remote probe type. Metal probe provides a high temperature, mechanical stress, pressure and withstand harsh environments generated by the fine waterproof housing can avoid environmental contamination and prevent condensation generated.

Parameter values measured through the two analog output channels, the output may be a current or voltage output. You can simply establish a network by RS485 connection to achieve remote monitoring and data logging, measurement data through the storage device for analysis and processing.

LCD monitor would displays three measurement parameters at the same time, or the font is enlarged for single display to provide different visual needs. Touch buttons without having to open the housing can be set a one point adjustment for temperature and humidity, output selection, range setting, adjustment parameters, and do not carry the computer in the environment field will be able to complete the setup work.

CAEL-HT Series Humidity and Temperature Transmitter Features
• Remote probe w/M12 connector
• Metal probe reduce electromagnetic interference
• 2-wire 4-20mA with selectable physical quantity
• 0 - 100%RH measurement, temperature range up to +120°C (248 °F)
• Probe pressure up to 10 bar
• Display and touch buttons for convenient operation
• Excellent quality and stable measurement
• IP-65 housing
• 1-point user adjustment
• Analog output and RS485
• MODBUS RTU protocol with integer and floating type
• Unit support metric or imperial
• Alarm output
• Dip switch setting
• Configure adapter support

CAEL-HT Series Humidity and Temperature Transmitter Applications
• Semiconductor and microelectronics industry
• Pharmaceutical industry, paper industry
• Environmental chambers, drying equipment, spraying equipment
• Agriculture, farms
• Greenhouse, storage room, cooling chamber
• Building Automation
• Environment and ventilation control

CAEL-HT Series Humidity and Temperature Transmitter Technical Data

Humidity
Measurement range	0 - 100 %RH
Accuracy (including non-linearity, hysteresis, and repeatability)
CAEL-HTA	±1.5%RH @ 25℃ (20 - 80%RH) ±2%RH @ 25℃ (0 - 20/80 - 100%RH)
CAEL-HT	±2%RH @ 25℃ (20 - 80%RH) ±3%RH @ 25℃ (0 - 20/80 - 100%RH)
CAEL-HTB	±3%RH @ 25℃ (20 - 80%RH)
Temperature coefficient (from 0°C to 80°C)	typ. ±0.02%RH/℃
Humidity Hysteresis	±1%RH
Recovery time after 150 hours of condensation	10 second
Long term drift	< 0.25%RH/year
Response Time (at 63% of signal) from 33 to 75%RH	10 second (at 1m/s air flow)

Temperature
Measurement range	-40 ~ 120 ℃
Accuracy (including non-linearity, hysteresis, and repeatability)	±0.2℃±0.003*T @ 25℃ ±0.7℃ (-40 ~ 5℃) ±0.3℃ (5 ~ 60℃) ±0.9℃ (60 ~ 120℃)
Long term drift	< 0.02℃/year

Analog output (two channels)
Current version	2-wire or 3-wire, 4 - 20 mA
Voltage version	0 - 1 V / 5 V / 10 V
Accuracy of analog outputs at +25°C	±0.1% full scale
Temperature dependence	±0.005%/°C full scale
External loads	current output RL < 500 ohm voltage output 0 - 1 V output RL > 2k ohm 0 - 5 V and 0 - 10 V outputs RL > 10k ohm

RS485 Modbus RTU
ID	1 - 247
Baud rate	9600/19200/38400/57600/115200
Data format	N81/N82/E81/E82/O81/O82

Psychrometric calculations (option)
(Td) dew point temperature, (A) absolute humidity, (Tf) frost/dew point temperature, (R) mixing ratio, (S) enthalpy, (Tw) wet bulb temperature, (E) water vapor pressure

Display with touch button (option)
LCD	128 x 64 dots without backlight
Lines	1,2 or 3
Buttons	capacitive x3

Alarm (option)
Relay type	Electromagnetic x1
Contact	SPDT / 8A / 277 VAC (resistive load)
Dual mode logic	AND/OR
Activate	High-point and Low-point with enable
Setpoint	-9999 to 9999
Hysteresis	0 to 9999
Delay	0 to 3600 second
Latch	on/off

Power supply
2-wire current version	11 - 35 VDC RL<50 ohm 20 - 35 VDC RL<500 ohm
3-wire current version	15 - 35 VDC, 12 - 29 VAC
Voltage version	15 - 35 VDC, 12 - 29 VAC
RS485 version	15 - 35 VDC, 12 - 29 VAC

Power consume (25 °C, V+ 24 VDC)
Current version	max. 40mA
Voltage version	typ. 10mA
Voltage version + alarm	typ. 25mA
RS485 version	typ. 25mA
RS485 version + alarm	typ. 40mA

Mechanics
Cable gland	PG9 with strain relief
Cable bushing	4.5 - 8.2 mm/0.18" - 0.32"
Housing material	PC, POLYCARBONATE
Housing classification	IP65
Probe pressure	10bar
Terminal block	AWG 12 - 24
Cable of remote probe version	2m, shield PVC, 80°C
Connection	Cable gland w/ terminal block or M12-4 pin

Probe material
Wall mount version	ABS/brass nickel-plated
Duct version	aluminum
Remote probe version	brass nickel-plated/aluminum

Temperature range
without display	-40 ~ 80°C (-40 ~ 176°F)
with display	-20 ~ 70°C (-4 ~ 158°F)

Probe temperature range
Duct and remote probe version	-40 ~ 120°C (-40 ~ 248°F)

Electromagnetic compatibility
Complies with EMC standard
EN61326-1, Industrial Environment

CAEL-HT Series Humidity and Temperature Transmitter Ordering Guide

Model	Installation	Output	Connection	Psychrometric calculations (Option)	Display with touch button (Option)	Alarm (Option)
CAEL-HTA CAEL-HT CAEL-HTB	Wall mount (110) Duct (120) Remote probe (130) Remote probe (131) Remote probe (135) Remote probe (136)	2-wire 4 - 20mA (2)* 3-wire 4 - 20mA (7) 0 - 10V (3) 0 - 5V (5) 0 - 1V (6) RS485 (4)	Cable gland (A) M12-4 pin (B) (with 2m cable)	Yes (M)	Yes (D)	Yes (R)

*2-wire 4…20mA version without Alarm option

Ordering example
CAEL-HT-120-7AMDR
Humidity accuracy: ±2%RH (20 - 80%RH)
Installation: Duct version
Output: 3-wire 4 - 20 mA
Connection: Cable gland with terminal block
Psychrometric calculations: Yes
Display with touch button: Yes
Alarm: Yes

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