™

2

www.honeywell.com/sensing

POTENTIAL APPLICATIONS

Medical

Anesthesia delivery machines

Ventricular assist devices (heart pumps)

Hospital diagnostics (spectrometry, gas chromatography)

Nebulizers

Oxygen concentrators

Patient monitoring systems (respiratory monitoring)

Sleep apnea machines

Spirometers

Ventilators

Industrial

Air-to-fuel ratio

Analytical instrumentation (spectrometry, chromatography)

Fuel cells

Gas leak detection

Gas meters

HVAC filters

VAV system on HVAC systems

Meteorolgy

Table 1: Absolute Maximum Ratings

1

Characteristic

Parameter

CAUTION

IMPROPER USE

Do not use these products to sense liquid or

fluid flow.

Failure to comply with these instructions

may result in product damage.

Supply voltage

-0.3 Vdc to 6.0 Vdc

Voltage on output pin

-0.3 V 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 pressure

25 psi at 25 C [77 F]

Maximum flow

10 SLPM

Note 1: 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 necessarily operate at absolute maximum ratings.

Table 2: Operating Characteristics

Characteristic

Parameter

Note

Supply voltage

3.3 Vdc 10%; 5.0 Vdc 10%

Supply current

16 mA max.

Power:

3.3 Vdc

5.0 Vdc

23 mW typ.

38 mW typ.

Operating temperature range

-20 C to 70 C [-4 F to 158 F]

Compensated temperature range

0 C to 50 C [32 F to 122 F]

1

Accuracy:

forward flow

reverse flow

±0.25% FSS or ±2.5% of reading, whichever is greater

±0.25% FSS or ±9% of reading, whichever is greater

2, 4

Total error band:

forward flow:

reverse flow:

±0.25% FSS or ±4.5% of reading, whichever is greater

±0.25% FSS or ±9% of reading, whichever is greater

3, 4

Null accuracy

±0.02% FSS

4, 10

Response time

1 ms typ.

5

Resolution

12 bit min.

Start up time

17 ms

6

Warm up time

30 ms

7

Calibration media

gaseous nitrogen

8

Bus standards

I

9

Null stability

±0.01% FSS maximum deviation from null output after 1000 hours at 25 C

Reverse polarity protection

no

Notes:

1. Custom and extended compensated temperature ranges are possible. Contact Honeywell for details.

2. Accuracy is the maximum deviation from the nominal digital output over the compensated flow range at a reference temperature of 25 C.

Errors include offset, span, non-linearity, hysteresis and non-repeatability (see Figure 3 for the Accuracy Error Band vs Flow).

3. Total error band includes all errors over the compensated flow range including all effects due to temperature over the compensated

temperature range (see Figure 4 for the Total Error Band).

4. Full Scale Span (FSS) is the algebraic difference between the digital output at the forward Full Scale (FS) flow and the digital output at the

reverse FS flow. Forward flow is defined as flow from P1 to P2 as shown in Figure 4. The references to mass flow (SCCM) refer to gas flows at

the standard conditions of 0 C and atmospheric pressure 760 (101.3 kPa).

5. Response time: time to electrically respond to any mass flow change at the microbridge airflow transducer (response time of the transducer

may be affected by the pneumatic interface).

6. Start-up time: time to first valid reading of serial number proceeding streaming 14-bit flow measurements.

7. Warm-up time: time to the first valid flow measurement after power is applied.

8. Default calibration media is dry nitrogen gas. Please contact Honeywell for other calibration options.

10. Null accuracy is the maximum deviation in output at 0 SCCM from the ideal transfer function over the compensated temperature range. This

includes offset errors, thermal airflow hysteresis and repeatability errors.