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Honeywell C7355A1050 Скачать руководство пользователя страница 9

C7355A ROOM IAQ MONITOR

9

31-00434—01

Fig. 14.

CORRECTION AND
CALIBRATION

Regular Correction

In order to ensure the accuracy of the measured value, the
C7355A should be corrected every year. The correction
should be carried out when a large deviation in the
measured value occurs even if it has been used for less
than one year.

This chapter describes the correction environment and
requirement needed on user's site, the correction can be
carried out by the user via RS-485.

If the following environment conditions are required for
field correction.

CORRECTION ENVIRONMENT:

Temperature: 68 °F ~ 77 °F (20 ~ 25 °C)
Humidity: 40% ~ 50% RH
The C7355A needs to be placed in the indoor natural

environment within the above temperature and
humidity range.

There should be windows and no human interference

with good air circulation.

The room area for correction should not be less than

325 ft

2

(30 m

2

).

CALIBRATION STANDARDS NEEDED FOR ON-SITE
CORRECTION.

PM2.5/PM10

PM2.5/PM10 calibration standard: TSI 8533 as a stan-

dard machine, or a new C7355A device.

After the new C7355A and the old C7355A that needs

to be corrected are powered on continuously and
synchronously for more than 10 minutes, record the
PM2.5 value for 30 minutes, and synchronous aver-
age value over 30 minutes can be applied for correc-
tion.

Temperature and humidity

Temperature and humidity calibration standard:

commercial or industrial temperature and humidity
calibration standard.

After the temperature and humidity calibration stan-

dard and C7355A that needs to be corrected are
powered on continuously and synchronously for
more than 60 minutes, start to record the value of
temperature and humidity for 10 minutes, use the
synchronous average value within 10 minutes over
correction.

CO

2

CO

2

calibration standard: e.g. CO

2

transmitter. Outdoor

CO

2

reference value is about 380 ppm-420 ppm.

After the CO

2

calibration standard and C7355A that

needs to be corrected are powered on continuously
and synchronously for more than 48 hours, the CO

2

value shall be continuously recorded for 30 minutes,
use the synchronous average value over 30 minutes
for correction.

TVOC

TVOC calibration standard: Because each TVOC uses

different sensors and sensitive substances, it is rec-
ommended to use the new C7355A machine as the
TVOC calibration standard.

After the TVOC and C7355A that needs to be corrected

are powered on continuously and synchronously for
more than 48 hours, record the TVOC value continu-
ously for 30 minutes and use the synchronous aver-
age value over 30 minutes for correction TVOC value
will be stable only after correction and at least 24
hours power-on.

Table 3. DIP Switch Settings

Indicator

Lights

DIP4 DIP3 DIP2 DIP1

Indicator

Lights

OFF OFF OFF OFF OFF

Three-color Indicator
Lights

OFF ON ON ON Default

Green Indicator Lights
Normally ON

ON OFF OFF OFF

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Содержание C7355A1050

Страница 1: ...o ensure reliability The monitor has a three color light ring to indicate different levels of indoor air quality The simple structure and installation makes wall mounting and ceiling mounting both easy and convenient Intended audience and assumed knowledge This document provides information about installing and commissioning the IAQ monitor It is assumed that the user is trained and familiar with ...

Страница 2: ... non condensing Overall Dimensions 5 12 in 5 12 in 1 77 in 130 mm 130 mm 45 mm Net weight 0 66 lb 300 g Certification Standard CE FCC IAQ MONITOR AT A GLANCE Light Ring Indicator Overview The image below illustrates the typical face shell of this IAQ monitor There is a circle light ring indicator in the center of the housing This light is used to show the measured air quality Fig 2 Monitor light r...

Страница 3: ...uct in a place where water may splash onto it Do not operate the detector with a hard sharp or pointed object such as a fingernail or pen 1 To separate the backplane from the detector rotate the backplane clockwise according to the direction of the arrow See Fig 3 and 4 Fig 3 Fig 4 2 Use a screwdriver to punch out the appropriate opening See Fig 5 Fig 5 3 Pull wires through the opened hole See Fig...

Страница 4: ...ng Instructions After installing the monitor and powering it up for initial use or re use the device should be continuously powered for more than 48 hours to ensure stable output of all measured values Complete these steps to configure the detector and connect it to the BMS IMPORTANT Make sure the RS 485 wiring is done before pow ering up Modbus Register Table Mode RTU MSB First Baud Rate 1 4800 2...

Страница 5: ...real time measurement 4 R 2 Float Big Endian 0 0 5 000 ppm 22 1010 TVOC real time measurement 4 R 2 Float Big Endian 3 0 4000 mg m3 24 1100 PM2 5 24 hour moving average measurement 4 R 2 Float Big Endian 1 0 1000 0 μg m3 26 1102 PM10 24 hour moving average measurement 4 R 2 Float Big Endian 1 0 1000 0 μg m3 32 1108 CO2 24 hour moving average measurement 4 R 2 Float Big Endian 0 0 5 000 ppm 34 1110...

Страница 6: ...ion index level Calculated based on 24 hour moving average measurement 4 R 1 INT16 1 6 1351 PM10 Pollution index level Calculated based on 24 hour moving average measurement 4 R 1 INT16 1 6 1352 CO2 Pollution index level Calculated based on 24 hour moving average measurement 4 R 1 INT16 1 6 1353 TVOC Pollution index level Calculated based on 24 hour moving average measurement 4 R 1 INT16 1 6 78 3 ...

Страница 7: ...ta Range Data Description Default 50 1175 PM2 5 hourly average measurement x10 4 R 1 UINT16 1 0 10000 corresponding to 0 1000 0 μg m3 51 1176 PM10 hourly average measurement x10 4 R 1 UINT16 1 0 10000 corresponding to 0 1000 0 μg m3 54 1179 CO2 hourly average measurement x1 4 R 1 UINT16 0 0 5000 corresponding to 0 5 000 ppm 55 1180 TVOC hourly average measurement x1000 4 R 1 UINT16 3 0 3575 corres...

Страница 8: ... on the concentration See Table 3 for concentration level DIP switches control the Indicator Lights OFF Three color Indicator Lights and Green Indicator Lights ON Please see Fig 14 and Table 3 62 1200 PM2 5 24 hour moving average measurement x10 4 R 1 UINT16 1 0 10000 corresponding to 0 1000 0 μg m3 63 1201 PM10 24 hour moving average measurement x10 4 R 1 UINT16 1 0 10000 corresponding to 0 1000 ...

Страница 9: ...ity Temperature and humidity calibration standard commercial or industrial temperature and humidity calibration standard After the temperature and humidity calibration stan dard and C7355A that needs to be corrected are powered on continuously and synchronously for more than 60 minutes start to record the value of temperature and humidity for 10 minutes use the synchronous average value within 10 ...

Страница 10: ...ad 16 Write 3 Read 16 Write 3 Read 16 Write 3 Read 16 Write 3 Read 16 Write Starting point Base 0 4 6 14 12 1224 Data length 2 2 1 2 2 Data type 32 Bit Float Big endian 32 Bit Float Big endian INT16 32 Bit Float Big endian 32 Bit Float Big endian Setting value Standard reading C7355A local temperature measured value Standard reading C7355A local humiditymeasured value Standard reading C7355A local...

Страница 11: ...return CO2 values to normal Self calibration conditions The CO2 concentration is around 400 ppm for at least 4 hours in every 24 periods The self calibration environment should last for one week TVOC s deviation is too large high or low TVOC in the environment needs to be stabilized for at least 48 hours after the sensor is powered on TVOC data deviation may be a little large within a short time a...

Страница 12: ...lding Technologies In the U S Honeywell 715 Peachtree Street NE Atlanta GA 30308 customer honeywell com buildingcontrols honeywell com U S Registered Trademark 2020 Honeywell International Inc 31 00434 01 M S 10 20 Printed in United States ...

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