Honeywell 5207 - Installation Manual

Installation Instructions for the

Honeywell Zephyr

TM

Digital Airflow Sensors

HAF Series–High Accuracy
±50 SCCM to ±750 SCCM

50045178

Issue E

CAUTION

IMPROPER USE

Do not use to sense liquid flow.

Failure to comply with these instructions may result in
product damage.

CAUTION

IMPROPER CLEANING

• Avoid cleaning the sensor; however, if it must be cleaned use

isopropyl alcohol and dry the device thoroughly before use.
Cap the ports or connect housing to the ports before cleaning
the sensor with alcohol. Using alcohol may remove the text on
the sensor label; however, the label ID is hard coded inside the

sensor.

• Do not use III Tri-chloroethane, methylene chloride, methyl

pyrrolidone, or any oxidizing type acid such as formic acid.

• Do not use ultrasonic cleaning.

Failure to comply with these instructions may result in
product damage.

NOTICE

Absolute maximum ratings are the extreme limits that the device

will withstand without damage to the device. However, the

electrical and mechanical characteristics are not guaranteed as

the maximum limits (above recommended operating conditions)

are approached, nor will the device necessary operate at

absolute maximum ratings.

Table 2. Operating Specifications

Characteristic

Parameter

Notes

Supply voltage:

3.3 Vdc

5.0 Vdc

3.3 Vdc ±10%

5.0 Vdc ±10%

—

Power:

3.3 Vdc

5.0 Vdc

40 mW max.

65 mW max.

1

Compensated temperature

range

0 °C to 50 °C

[32 °F to 122 °F]

2

Operating temperature

range

-20 °C to 70 °C

[-4 °F to 158 °F]

—

Warm-up time

30 ms

3

Calibration media

gaseous nitrogen

4

Bus standards

I

2

C fast mode (up to 400 kHz)

5

Reverse polarity protection

no

—

Notes:

1. Maximum power: Is measured under the conditions of the highest supply

voltage, Vsupply + 10%, 70 °C, full scale flow and with the minimum load

specified for that supply voltage.

2. Custom and extended compensated temperature ranges are possible.

Contact Honeywell for details.

3. Warm-up time: The time to the first valid flow measurement after power is

applied.

4. Default calibration media is dry nitrogen gas. Please contact Honeywell for

other calibration options.

5. Refer to the Technical Note “I

2

C Communications with Honeywell Digital

Airflow Sensors” for I

2

C protocol information.

Table 1. Absolute Maximum Ratings

Characteristic

Parameter

Supply voltage

-0.3 Vdc to 6.0 Vdc

Voltage on I/O output pin

-0.3 Vdc to Vsupply

Storage temperature range

-40 °C to 125 °C [-40 °F to 257

°F]

Maximum flow change

5.0 SLPM/s

Maximum common mode pres

sure

25 psi at 25 °C [77 °F]

Maximum flow

10 SLPM

CAUTION

LARGE PARTICULATE DAMAGE

Use a 5-micron filter upstream of the sensor to keep media flow

through the sensor free of condensing moisture and particulates.

Large, high-velocity particles or conductive particles may

damage the sensing element.

Failure to comply with these instructions may result in

product damage.

GENERAL INFORMATION

Table 3. Environmental Characteristics

Characteristic

Parameter

Humidity

0% to 95% RH, non-condensing

Shock

100 g, 11 ms

Vibration

15 g at 20 Hz to 2000 Hz

ESD

Class 3B per MIL-STD 883G

Table 4. Wetted Materials

Characteristic

Parameter

Covers

high temperature polymer

Substrate

PCB

Adhesives

epoxy

Electronic components

silicon, gold

Compliance

RoHS, WEEE

Table 5. Recommended Mounting and Implementation

Characteristic

Parameter

Mounting screw:

size

torque

5-40

0.68 N m [6 in lb]

Silicone tubing for long

port style

70 durometer; 0.125 inch inside

diameter, 0.250 inch outside diameter

O-ring:

short port style

long port style

AS568A, Size 7, Silicone, Shore A 70

AS568A, Size 10, Silicone, Shore A 70

Filter

5-micron filter upstream of sensor