thermokon CRC9 Series Ceiling Humidity and Temperature Sensor Instruction Manual

thermokon CRC9 Series Ceiling Humidity and Temperature Sensor

Product Information

The CRC9- Series (H&T) is a ceiling humidity and temperature sensor designed for measuring temperature, relative humidity, absolute humidity, enthalpy, or dew point in rooms or areas. It features BACnet / Modbus RTU communication protocols and is suitable for use in building automation systems. The sensor is field replaceable and operates with low power supply. It can withstand harsh environmental conditions due to its high protected sensor element.

Product Usage Instructions

To use the CRC9- Series (H&T) sensor, follow these steps:

1. Select the appropriate communication protocol (BACnet MSTP or Modbus RTU) based on your building automation system requirements.
2. Install the sensor in the desired location, ensuring it is securely mounted and positioned correctly.
3. Connect the sensor to the power supply using the provided terminal clamp.
4. Configure the sensor to measure the desired variable (temperature, relative humidity, absolute humidity, enthalpy, or dew point).
5. Monitor the sensor output via BACnet MSTP / Modbus RTU communication.
6. If needed, replace the sensor in the field using a compatible replacement.

Note : The CRC9- Series (H&T) sensor is suitable for use in all common HVAC applications and can be used in commercial and industrial buildings. It offers high humidity accuracy and features a modern and practical product design. It is easy to use, install, and maintain.

Technical Information

Ceiling Humidity and Temperature Sensor with BACnet / Modbus RTU communication

• The CRC9- Series (H&T) is designed to measure temperature, relative humidity, absolute humidity, enthalpy or dew point in rooms or areas
• The Sensor is field replaceable
• The sensor operates with low power supply
• The sensor withstands harsh environmental conditions due to high protected sensor element
• BACnet MSTP and Modbus RTU on Board
• The sensor output is via BACnet MSTP / Modbus RTU communication

Use
In Building Automation System where BACnet MSTP or MODBUS RTU communication protocols are used Relative humidity, absolute humidity, enthalpy or dew point and temperature measurement in air ducts

• Used in harsh environments due to IP67 protected sensor element, without impact on the accuracy or measuring time Used in all common HVAC applications
• Used in Commercial and Industrial Buildings

Features

• Sensor output via BACnet MSTP / Modbus RTU communication
• Selectable communication protocol
• Field Replaceable sensor
• High Humidity accuracy
• Modern and practical product design
• Easy to use, install and maintain

Product Range

Order Codes

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Cable Length

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Communication system

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Power Supply

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Measuring Variable

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Measuring Units

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Accuracy

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Protection

---|---|---|---|---|---|---|---
 |  |  |

AC/DC 24V (±10%)

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rel. humidity

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0…100%

|  |
CRC9.BA| 2m| BACnet MSTP|  |  |  |
 |  |  | absolute humidity

absolute humidity

| 0…50gr/m3

-20….80°C

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± 2%, Full Scale

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IP20

 |  |
CRC9.BG| 2m| Modbus RTU|  |  |  |
 |  |  | enthalpy| 0…85kJ/Kg|  |

Sensor Specification

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Sensor Specification

| Sensor Specification| Measured

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Sensor Characteristics H/T Outputs

Accuracy                    relative humidity absolute humidity enthalpy

dew point Temperature

IP- Rating sensor element Repeatability (H)

Long Term Drift (H) Measuring Range (H)

Measuring Range (T) (default)

| Temperature & Humidity Active

BACnet MSTP or Modbus RTU communication, RS485

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± 2% over measuring range

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± 2% over measuring range

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± 2% over measuring range

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± 2% over measuring range see chart, page 4

IP67 to IEC60529

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±0.1C̊    ; ±0.1% r.h.

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< 0.04C̊    / year ; < 0.5% r.h. / year see charts page 4

-40⁰C…120⁰C

|
---|---|---|---|---
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Technical Information

| Electrical Information| Power Supply| AC/DC 24V (±10%)|
 | Frequency| 50 / 60 Hz at AC 24V
 | Terminal Clamp| Screw terminal, max. 1.5mm²
 | Power Consumption| ≤ 1W @ AC 24V / DC 24V
Mechanical Information| Cable Length| 2m
 | Cable Lead Diameter| Ø0.25mm
 | Cable Diameter| 4.6mm
 | Sensing Element Position| external, top of the sensor pocket
 | Sensor Housing| Ø30mmx37mm
 | Sensor / Housing connection| M12 screw-on connection
Color and Materials| Housing Cover| White ABS, RAL9001 (Cream White)
 | Housing Bottom| White ABS, RAL9001 (Cream White)
 | Lock Screws| US:AISI 304; EU: EN X 6 CrNi 18 10; GER: W.N. 1.301
 | Lock Nuts| Brass
 | Sensor / Housing connection| Zink alloy – Nickel plated
 | Cable Gland| White ABS, RAL2002 (Vermilion)
 | Gland Rubber Seal| White TBS, RAL9010 (Pure White)
 | Protection Caps| White ABS, RAL2002 (Vermilion)
Environmental Conditions| Operation Temperature| -25⁰C…+70⁰C
 | Operation Humidity| <85% r.h., no condensation
 | Transport Temperature| -35⁰C…+70⁰C
 | Transport Humidity| < 90% r.h.
 | Storage Temperature| -10⁰C…+70⁰C
 | Storage Humidity| < 85% r.h., no condensation
Norms and Directives| IP- Rating| IP20 to IEC60529
 | Safety Class| III to EN 60 730
 | Product Standard 1| Automatic Electric. Controls for household and similar use
 | Product Standard 2| 2009/EN 60 730-1
 | CE Conformities to| 2004/108/EG Electromagnetic Compatibility EMV
 | CE Electromagnetic Compatibility Emitted Interference| 2000/EN60730-1 Emitted Interference
 | CE Electromagnetic Compatibility Interference resistance| 2000/EN60730-1 Interference Resistance
 | RoHS Compatibility| RoHS 3, Directive 2015/863
 | Operation Climatic Condition| IEC 60 721-3-3
 | Operation Mechanical Condition| IEC 60 721-3-2 to class2M2
 | Transport to Climatic Condition| IEC 60 721-3-2
 | Transport Mechanical Condition| IEC 60 721-3-2 to class2M2
 | Storage Climatic Condition| IEC 60 721-3-1
 | Storage Mechanical Condition| IEC 60 721-3-1 to class2M2
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Miscellaneous

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Accessories Shipping & Handling

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Order Notes

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n/a

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Minimum Order

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Packaging Order Code

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n/a

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1 box with 1 piece Rigid Cardboards

See Product Range, Page 1, e.g. CRC9.BA

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Thermokon Asia Pacific

| All Information and technical data are subject to alteration

CRC9- Series (H &T) V23.1

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Page 2/4

Modbus Parameters

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Modbus Parameters

| Address Number| Register Description|  |
---|---|---|---|---
0…3| Serial Number|  | actual version
4| Software Version|  | actual version
6| Modbus Address|  | Default 254, selectable 1…254
8| Hardware Version|  | actual version
11| Baud Rate autodetection|  | 0= OFF ; 1= On
15| Baud Rate, (if autodetection is OFF)| 0= 9600 ; 1= 19.200 ; 2= 38.400 ; 3= 57.600 ; 4= 115.200
34| Temperature, digital|  | actual value
35| Rel. Humidity|  | actual value
41| Dew Point Value, actual|  | actual value
42| Enthalpy Value, actual|  | actual value
44| Absolute Humidity, actual|  | actual value
45| Temperature, passive|  | actual value
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BACnet Parameters

| Supported BACnet Objects Types|  |  |
analog-value|  |  |
device|  |  |
Supported BACnet Services|  |  |
who-is|  |  |
i-am|  |  |
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object-identifier, object-name, object-type, present-value, units, object- list, vendor-id, vendor-name, system-status, confirmed-service, unconfirmed- services

MSTP Objects|  |  |
analog-value|  |  |
 | BACnet Address|  | Default 127, selectable 0…127
AV0| Baud rate autodetection|  | default 0, 0= OFF ; 1= ON
AV1| Baud Rate, (if autodetection is OFF)| 0= 9600 ; 1= 19.200 ; 2= 38.400 ; 3= 57.600 ; 4= 115.200
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AV2

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Humidity Mode

|  | 0= Dew Point ; 1= Enthalpy ; 2= Absolute Humidity ; 3= relative humidity
AV3| Protocol|  | 0= Modbus ; 1= BACnet
AV4| Temperature|  | actual value (-40…120ºC)
AV6| Relative Humidity|  | actual value (0…100% rel. Humidity)
AV7| Absolute Humidity|  | actual value (0…50gr/m3)
AV8| Dew Point|  | actual value (-20…80ºC)
AV9| Enthalpy|  | actual value (0…85kJ/kg)
Device|  |  |
 | device-identifier|  |
 | device-name|  |
__ The function “Baud Rate autodetection” can only be used during the product is been setup. When the product is working with the BAS, the “Baud Rate autodetection” has to be set to 0= OFF and the actual Baud Rate has to be set.
All Information and technical data are subject to alteration
Thermokon Asia Pacific| CDI9- Series (H &T)| V23.1| Page 3/4

Installation Notes
Observe the following general regulation for engineering and implementation:

• All relevant national and heavy power regulation
• Other country specific regulations
• Country-specific regulations
• Local electrical supply authority regulation
• Schematics, cable listings, dispositions, specification and arrangements from the customer or engineering office in charge
• Third party specifications, e.g. general contractors or constructors

Mounting Advices

Disposal Notes
The device is considered an electronic device for disposal in terms of the EUROPEAN DIRECTIVE 2012/19/EU. The device may not be disposed as domestic garbage. The device must be disposed through channels provided for this purpose. It is mandatory to comply with local currently applying laws and regulations.

Accuracy Curves

Dimensional Drawing

Connections & Settings

Terminals Connection

T1| T2| T3| T4| T5| T6
UB+| 24V AC/DC| GND| RS485 – C-| RS485 – C+| n.A.| n.A.

Thermokon Asia Pacific
All Information and technical data are subject to alteration CRC9- Series (H&T) V23.1

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