Honeywell AWM700 Series Installation Instructions

Installation Instructions for the
AWM700 Series Airflow Sensors
GENERAL INFORMATION
AWM700 Series airflow sensors operate on the theory of heat
transfer due to mass gas flow across the surface of the
sensing element. The sensing element consists of a resistor
bridge heater circuit and dual temperature-sensing resistor
bridges. This configuration senses mass flow rates and flow
direction. The AWM700 Series amplified sensors contain all
necessary circuitry for heater control, sensing bridge supply,
and amplifier functions.
CAUTION
PRODUCT 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.
CAUTION
PRODUCT DAMAGE
Do not use ultrasonic cleaning.
Do not use III Tri-chloroethane, methylene chloride,
methyl pyrrolidone, or any oxidizing type acid such as
formic acid. Solvent cleaning may attack the epoxy that
seals the chip tube.
Failure to comply with these instructions may result in
product damage.
Table 2. Performance Specifications
Characteristic
Power supply
Power consumption
Output loading:
sinking
sourcing
.
Sensing and Control
CONNECT SENSOR
1. Remove (unlatch) the connector from the AWM700.
2. Hand-crimp the interface wire to the appropriate pin on the
connector (see Figure 1).
3. Insert the terminal contacts into the connector housing
after carrier strip (lead-frame) is removed.
4. Reconnect (latch) connector to the sensor.
The AWM700 Series accepts a latch detent connector, such as
AMP part number 103956-3.
Information and literature on latch detent connectors is
available from the AMP Product Information Center, 1-800-
522-6752 or the Customer Hotline, 1-800-722-1111. (See
Table 1.)
Table 1. Related AMP Literature
Literature Number Name
108-25034 Product Specification (technical
performance information)
114-25026 Application Specification (describes
product, proper assembly, full tooling
information)
IS 6919 Instruction Sheet for assembly
procedure
MOUNT SENSOR
Mount the AWM700 with 6-32 screws. Use washers below the
screw head. Mounting torque is 0.68 N m [6.0 in-lb] max.
Min. Typ.
8.000 10.000
10
20
ISSUE 2
PK 80150
Max. Unit
15.000 Vdc
60 mW
mA
mA