Solid state economizer system, consisting of discharge air sensor or mixed air sensor, solid state enthalpy sensor, solid state temperature sensor, damper actuators, thermostat and solid state economizer logic module (20 pages)
Honeywell CRIR-M1 User Guide GENERAL INFORMATION Honeywwll’s CRIR M1 Commercial Carbon Dioxide (CO ) sensor is a single channel, non-dispersive infrared (NDIR) sensor. Within the CRIR M1 is a sensing chamber with an infrared source at one end and a detector fitted with an optical filter at the other end.
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Honeywell CRIR-M1 User Guide Table 1 - Product Specifcation CHARACTERISTIC PARAMETER Target Gas Carbon dioxide (CO Operating Principle Non-dispersive infrared (NDIR) Standard Range 400 ppm to 2000 ppm, up to 10000 ppm extended range 1, 2 Measurement interval Accuracy ±40 ppm ± 3% of reading Typical response time (T90) <120 s...
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Honeywell CRIR-M1 User Guide Figure 2 - Mounting Dimensions (mm) - for reference only Table 2 - Pinout FUNCTION NUMBER bCAL_in/CAL_in UART_R/T UART_TXD UART_RXD DVCC_out (3.3 V) Vin_(4.5 V to 5.5 V) Alarm output PWM output Tel: 07788 548013 solentgasconsultants@gmail.com...
Honeywell CRIR-M1 User Guide SENSOR HANDLING CAUTION CAUTION EXPOSURE TO HARMFUL GASES IMPROPER SENSOR HANDLING • Ensure that the CRIR M1 does not come into • The CRIR M1 is an electrostatic-sensitive contact with the device (ESD). Handle the CRIR M1 •...
Honeywell CRIR-M1 User Guide AUTOMATIC BASELINE CORRECTION (ABC) Honeywell’s CRIR M1's built-in, self-correcting ABC algorithm allows maintenance-free operation in normal indoor environments. This algorithm automatically calibrates the sensor’s lowest reading over a preconfigured time interval to 400 ppm CO , the expected CO concentration in fresh air, thus compensating for sensor drift.
Internal pull up to GND resistor 120 k Input low level GND to 0.75 V Input high level 2.3 V to DVCC_out + 0.3 V 1 The specified parameter relies on the subcontractor's specification and is not tested by Honeywell. Tel: 07788 548013 solentgasconsultants@gmail.com...
Output high level 2.4 VDC minimum at 8 mA source 1 The specified parameter relies on the subcontractor's specification and is not tested by Honeywell. CALIBRATION With the ABC function on, the sensor readings, which may have drifted, due to mishandling during transportation and/or installation, may gradually be recalibrated to the correct numbers.
Honeywell CRIR-M1 User Guide Table 5 - Default Settings of BCAL_IN and CAL_IN INPUT DEFAULT FUNCTION Available when closed for minimum 4 s / maximum 8 s; bCAL bCAL_in assuming 400 ppm CO sensor exposure Available when closed for minimum 16 s; CAL assuming 0 ppm...
Honeywell CRIR-M1 User Guide MODBUS REGISTER DEFINITION Table 6 - Input Registers Definition NAME DESCRIPTION Reserved Reserved Reserved Reserved Temperature Detector Temperature DI 1 – reserved1 DI 2 – reserved1 DI 3 – reserved1 DI 4 – reserved1 Meter Status DI 5 –...
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Honeywell CRIR-M1 User Guide Table 7 - Holding Registers Definition NAME DESCRIPTION Reserved Reserved Reserved Reserved ABC Period ABC period in hours , default: 180 hours CI 1 - CO2 random calibration point has been performed 0X0000 CI 2 - Reserved2...
Honeywell CRIR-M1 User Guide MODBUS FUNCTION DESCRIPTION The serial port configuration is: 9600, 8, 1, N, N. The sensor is addressed as “Any address” (0xFE). Input Registers Description Values are read from IR using “Read input registers” (function code 04).
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Honeywell CRIR-M1 User Guide Read Sensor Type ID Master Transmit: <FE> <04> <00> <09> <00> <02> <B5> <C6> Slave Reply: <FE> <04> <04> <00> <00> <18> <00> <FE> <8B> Data Explain: <00> <00> <18> <00> is valid data 0x00001800, IR09 low byte + IR10 contains Sensor Type ID 3-bytes value, so this data is 0x001800, it indicates the type of sensor.
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Honeywell CRIR-M1 User Guide Read ABC Period Master Transmit: <FE> <03> <00> <04> <00> <01> <D1 > <C4> Slave Reply: <FE> <03> <02> <00> <B4> <AC> <27> Data Explain: <00> <B4> is valid data 0x00B4, decimal is 180 hours. Setup User Concentration Master Transmit: <FE>...
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The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchant- ability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages.
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Contact Details Solent Gas Consultants Ltd. Richard Chambers Managing Director 07788 548013 solentgasconsultants@gmail.com www.solentgasconsultants.com Important Information Regarding the Use of Sensors in Safety Critical Applications To ensure that the sensor and/or instrument in which it is used, are operating properly, it is a requirement that the function of the device is confirmed by exposure to target gas (bump check) before each use of the sensor and/or instrument.