BAPI Wireless Duct Temperature & Humidity Transmitter 418MHz Catalog Page

19706_ins_wireless_duct_temp_humid_xmtr

Wireless System Overview

Wireless Duct Temperature & Humidity Transmitter 418MHz

Installation and Operating Instructions

rev. 04/21/15

418 MHz System:
The transmitter measures the temp and/or humidity
and sends the data at 418MHz to the 418 MHz Re­ceiver up to 100 feet away. The transmit rate is about
once every 20 seconds with an estimated battery life
of 5 to 8 years with two high-capacity 3.6V lithium
batteries.

The transmitted info is picked up by the 418 MHz
Receiver and passed along to the Analog Output
Modules. Each transmitted temperature or humidity
variable is converted by a separate Analog Output
Module into an analog resistance, voltage or current
which is then hard wired to the analog inputs of the
BAS controller.

900 MHz System:

Transmitter

Transmits the
Temperature,

Humidity,
Setpoint and
Override Info

418 MHz

Up to 100 Feet

Fig. 2:

418 MHz

Wireless

System

Receives the Temperature, Humidity, Setpoint

and Override Info from the Transmitter and
passes it on to the Analog Output Modules

Analog Output Modules

Converts the Temperature,

Humidity, Setpoint and

Override Info into an analog

resistance, voltage, current

or relay for the BAS controller

418 MHz Receiver

The transmitter mea­sures the temp and/
or humidity and sends
the data at 418MHz to a
Repeater up to 100 feet
away. The transmit rate
is approximately once
every 20 seconds with
an estimated battery
life of 5 to 8 years using
two high-capacity 3.6V
lithium batteries.

The 418 MHz transmit­ted info is picked up
by the Repeater and
then Re-Transmitted at
900 MHz to a 900 MHz

Transmitter

Transmits the

Temperature and

Humidity Info

Receives the 418 MHz Info from

the Transmitter and Re-Transmits

it at 900 MHz up to 1,000 feet

418 MHz

Up to 100

Feet

Repeater

900 MHz

Up to 1,000

Feet

900 MHz Receiver

Receives the Temperature and Humidity Info from the

Repeater and passes it on to the Analog Output Modules

Fig. 2: 900 MHz Wireless System

Analog Output Modules

Converts the Temperature

and Humidity Info into an
analog resistance, voltage or
current for the BAS controller

Receiver up to 1,000 feet
away. The 900 MHz receiver picks up the information from the repeater and then passes it along to the Analog Output Modules.
Each transmitted temp or humidity variable is converted by a separate Analog Output Module into an analog resistance, voltage
or current which is then hard wired to the analog inputs of the BAS controller.

Duct Temperature and Humidity Transmitter Mounting

First train the transmitter and output modules as shown

above on the next page.

1. Place the sensor in the middle of the duct away from
temperature stratied air, coils or humidiers to achieve
the best temperature reading.

2. Drill 1” diameter probe hole and insert the probe into the
duct.

3. Mount the enclosure to the duct using BAPI
recommended #8 screws through a minimum of two
opposing mounting tabs provided. A 1/8 inch pilot screw
hole in the duct makes mounting easier through the
mounting tabs. Use the enclosure tabs to mark the pilot
hole locations.

4. Snug up the sensors so that the foam backing is
depressed to prevent air leakage but do not over-tighten
or strip the screw threads.

Specications subject to change without notice.

Fig 3: Wireless Duct Humidity Sensor Mounting

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Wireless Duct Temperature & Humidity Transmitter 418MHz

Installation and Operating Instructions

19706_ins_wireless_duct_temp_humid_xmtr

Analog Output Module Training

The installation process requires that each transmitter is trained to its associated output modules so that they communicate with each
other. Pushing buttons in a dened sequence on the units binds them together. The training process is easiest on a test bench so
the units are within arm’s reach of each other. Train­ing can be done in the eld but requires two people
and a set of walkie talkies or cell phones. Be sure
to place an identication mark on the transmitter and
associated output module after training so they can be
matched at the job site.

When both temp and humidity are transmitted, each
one requires a separate output module. Perform
the training sequence for each output module. Any
transmitted variable can be trained to more than one
output module. If a Repeater is used, be sure it is powered and
within range of the transmitter and the 900 MHz Receiver to train
the output modules.

TRAINING PROCEDURE

1. To train an output module to a Temperature or Humidity
variable, select the output module calibrated to the proper
temperature or humidity range and connect it to the wireless receiver. Multiple
output modules can be trained to the same transmitter variable.

2. Apply power to the receiver which will supply power to the connected output modules. The
power LED on the receiver will light and remain lit. (Current Output Modules must have loop
power supplied to the module itself before they can be trained.)

3. Open the cover of the BAPI-Box transmitter and remove the battery tabs or install the batteries,
observing polarity as shown in Fig 4. The small LED on the transmitter module will ash about
once every 20 seconds, indicating a transmission. (The ash is very quick.)

4. Press and hold down the “Service Button” on the top of the output module (Fig 5) that you wish
to train. Then, press and release the “training button” (see Fig 4) on the transmitter module.
When the output module receives the “training transmission” from the transmitter, the output
module’s red LED will light. Release the “Service Button” on the output module and the red LED will go out. The transmitter and
output module are now trained to each other. The output module’s LED will now ash about once every 20 seconds indicating data
reception.

Note: The transmitter sends both the temp and humidity data when the “Training Button” is pressed. However, each output module

is congured at the time of order as a temp or humidity module and will only recognize the relevant information.

5. Mount the transmitter at the desired location (as described on the previous page), removing the batteries if needed. (The units will
remain trained to one another through power failures and battery replacement.)

Training Button

Transmit LED

Battery

Connectors

Transmitter Module

Fig. 4:

Battery

Installation

and Training

Button.

Mounting and Locating of the Antennas on the 418 MHz Receiver, 900 MHz Receiver and the Repeater

The Receivers and Repeater may be located inside a metal enclosure but their antennas must be outside the enclosure. There are
three types of antennas — the 418 MHz Dipole, 900 MHz “Whip” and a 900 MHz Dipole. T
MHz Dipole Antenna, peal off the protective lm from the adhesive pad and stick the antenna to a wall or other non-metallic support so
that antenna is vertical for best reception. Antenna’s should be mounted as far away from metal plates or bars as possible to avoid RF
energy being reected back or blocked on the other side of the metal. An antenna will not work inside a metal box. Mounting to drywall
between studs, ceiling tiles, brick, or concrete is very common.

Transmission distance performance will vary based on environment. 100 feet is the maximum that can be expected if there are no
obstructions. In general, each obstruction will half the expected transmission distance. Obstructions include but are not limited to;
walls, partitions, oors, ceilings, doors, tinted
glass, ground, many people, vehicles, foliage,
rain, snow and fog. Metal (solid or screen)
blocks the RF signal preventing propagation but
also can bounce the signal around the potential
obstacle. Wood, drywall, plaster, brick, and
concrete attenuates the signal but will let it pass
(if it’s not too thick) at a reduced signal strength.
Anything that holds water absorbs the signal
to the point of blockage like rain, fog, people,
ground, dense foliage etc. Elevator shafts and
stairwells usually block RF signals.

The 900 MHz “Whip” Antenna simply screws
onto the 900 MHz Receiver or the Repeater.
Mounting the antenna on a metal surface may
limit reception from behind the surface.

Note: The Dipole antennas above are displayed horizontally to show dimensions but

Specications subject to change without notice.

900 MHz

“Whip”

Antenna

900 MHz

Dipole

Antenna

they should be mounted vertically for best reception.

o mount the 418 MHz Dipole Antenna or 900

418 MHz

Dipole

Antenna

rev. 04/21/15

Battery
polarity is
important

or damage

to the unit

may occur.

Output
Module
Service

Button

Fig. 5:
Output

Module

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Wireless Duct Temperature & Humidity Transmitter 418MHz

Installation and Operating Instructions

19706_ins_wireless_duct_temp_humid_xmtr

Mounting of the 418 MHz Receiver, 900 MHz Receiver and Analog Output Modules

rev. 04/21/15

The 418 MHz Receiver, 900 MHz Receiver and Analog Output Modules can be
mounted in snap track, DIN Rail or surface mounted. The text and gures refer to
the 418 MHz Receiver, but the mounting process is the same for both receivers.

SNAPTRACK MOUNTING

Push in the blue mounting tabs on the bottom of the receiver and output modules.
These units will now t into the board slots of 2.75” snap track. Insert the receiver
at the far left of the snap track, then insert each analog output module and slide it
to the left until its connectors are fully mated into the receiver or the next analog
output module. You may attach up to 127 analog output modules to a receiver.

If your output modules cannot t in one piece of snap track, then mount another
piece of snap track nearby and insert the additional modules. Connect wires from
the right side of the rst string of modules to the left side of the second string of
modules on the second snap track. (See “Extending the RS485
Network” on pg. 5.) This conguration requires one or more
Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

DIN RAIL MOUNTING

Push out the blue mounting tabs on the bottom of the
receiver and output modules. These units will now snap
onto DIN Rail. Catch the EZ mount hook on the edge of the
DIN rail as shown in Fig 8. Then rotate into place.

Attach the receiver at the far left of the DIN Rail, then attach
each analog output module and slide it to the left until its
connectors are fully mated into the receiver or the next
analog output module. You may attach up to 127 analog
output modules to a receiver.

If your output modules cannot t onto one piece of DIN Rail,
then mount another piece nearby and attach your additional modules. Connect wires from the
right side of the rst string of modules to the left side of the second string of modules on the
second DIN Rail. (See “Extending the RS485 Network...” on pg. 5.) This conguration requires
one or more Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

Receiver & output modules mounted on DIN Rail.

Fig. 7:

Fig. 6:

Receiver

and output

modules

mounted in

snaptrack.

Fig. 8:

Catch the EZ Mount
hook on the edge of
the DIN Rail, then
rotate into place.

SURFACE MOUNTING

Push out the blue mounting tabs on the bottom of the receiver and output modules. Attach the
receiver to the surface by inserting a screw in each blue tab. Attach Analog Output Modules by
placing each one against the surface and sliding it to the left until its connectors are fully mated
into the receiver or the next analog output module. Attach each module to the surface with two
screws, one in each blue tab. You may attach up to 127 analog output modules to a receiver.

If your output modules cannot t in one straight line on the surface, then mount a second string
of modules nearby. Connect wires from the right side of the rst string of modules to the left
side of the second string of modules. (See “Extending the RS485 Network...” on pg. 5.) This
conguration requires one or more Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

Wireless Temperature and Humidity Transmitter Specications

Supply Power: Two AA 3.6V Lith. batteries, 2.25 AH
5 to 8 year battery life at 20 second transmit rate

Inputs: Temperature - Thermistor
Relative Humidity - Capacitive

Accuracy: ±0.54°F (±0.3°C) / ±2% RH

Transmitted Range: -40 to 185°F (-40 to 85°C ) • 0-100% RH

Antenna: Built inside the enclosure

Enclosure Dimensions: 5” x 4.11” x 2.5”

Environmental Operation Range:

Temp: 32° to 140°F (0° to 60°C)
Humidity: 5% to 95% RH non-condensing

Enclosure Material & Rating: ABS Plastic, UL94 V-0

Radio Frequency: 418 MHz North America

Transmitter Interval: ~20 seconds

Specications subject to change without notice.

FCC Approval #:
T4F061213RSO (418MHz Room Transmitter Only)
T4F060811TEMP (418MHz Temperature Probe Only)
T4F060811RH (418MHz Temp & Humidity Probe Only)
OUR9XSTREAM (Repeater Unit Only)

Compliance: This device complies with Part 15 of the FCC rules

Operation is subject to the following conditions.

1. This device may not cause harmful interference.

2. This device must accept any interference received, including
interference that may cause undesired operation.

FCC Radio Frequency Interference Statement:

This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15, Subpart B, of the
FCC Rules. This equipment generates, uses, and can radiate radio
frequency energy. If not installed and used in accordance with the
instructions, it may cause interference to radio communications.

Fig. 9: Receiver and output

modules surface mounted.

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Wireless Duct Temperature & Humidity Transmitter 418MHz

Installation and Operating Instructions

19706_ins_wireless_duct_temp_humid_xmtr

418 MHz Receiver and 900 MHz Receiver with Analog Output Modules Termination

rev. 04/21/15

418 MHz System

418 MHz Receiver

System Power Supply

9 to 30VDC or 17 to 31VAC

Power for the Power Bus can be
supplied to the receiver or to the

Analog Output Module on the far right

of the string of modules, but not to both

places.

The Power Bus must be connected to

the controller “-” power terminal.

Resistance

Output Module

The Resistive Thermistor Temp.

Signal is Polarity Sensitive to the

Controller and Must Have Less

than a 5VDC Bias Voltage.

Both “+” and “-” must be

connected to the controller

signal input and the negative “-”

connected to the power supply

negative “-”

Voltage

Output Module

Current Output Module

Requires loop power

before it can be trained.

0 to 5VDC or

0 to 10VDC

Analog Signal

Current Loop

Power

Supply

9 to 36VDC

4 to 20mA Current
Loop Signal to the

Controller

Relay

Output Module

Solid State Relay

40 VAC/VDC Max

150 mA Max

1 uA Leakage Max

RS-485 Bus

To Other Analog
Output Modules

Fig 10: 418 MHz Receiver and Output Module System Wiring

Termination Notes for 418 MHz and 900 MHz Systems:

1. The wireless receiver and Analog Output Modules are interconnected and require module power along the “Power Bus”
terminals. The bus can be powered from either the receiver end on the left or the last output module on the right side. Be sure
you have enough DC current or AC VA for all the devices on the bus.

2. The Current Output Module (BA/COM) signal is LOOP POWERED and must be externally powered with 9 to 36 VDC
separate from the Power Bus. The Loop Power must be connected to the Current Output Module before it can be trained.

3. Be sure to follow the polarity (+ or –) symbols listed on each receiver and the output modules to maintain communication and
Power Bus integrity.

900 MHz System

900 MHz Receiver

System Power Supply

9 to 15VDC

Power for the Power Bus can be
supplied to the receiver or to the

Analog Output Module on the far right

of the string of modules, but not to

both places.

The Power Bus must be connected to

the controller “-” power terminal.

Resistance

Output Module

The Resistive Thermistor Temp.

Signal is Polarity Sensitive to the

Controller and Must Have Less

than a 5VDC Bias Voltage.

Both “+” and “-” must be

connected to the controller

signal input and the negative “-”

connected to the power supply

negative “-”

Specications subject to change without notice.

Voltage

Output Module

0 to 5VDC or

0 to 10VDC

Analog Signal

Fig. 11: 900 MHz Receiver and Output Module System Wiring

Current Output Module

Requires loop power

before it can be trained.

Current Loop

Power
Supply

9 to 36VDC

4 to 20mA Current
Loop Signal to the

Controller

Relay

Output Module

Solid State Relay
40 VAC/VDC Max

150 mA Max

1 uA Leakage Max

RS-485 Bus

To Other Analog
Output Modules

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Wireless Duct Temperature & Humidity Transmitter 418MHz

Installation and Operating Instructions

19706_ins_wireless_duct_temp_humid_xmtr

Extending the RS485 Network between the Receiver and the Analog Output Modules

The Analog Output Modules may be mounted up to 4,000 feet away from the receiver. The total length of all the shielded, twisted
pair (TSP) cables shown in Fig 12 is 4,000 feet (1,220 meters). Connect the terminals together as shown in Fig 12. If the dis­tance from the receiver to the group of Analog Output Modules is greater than 100 feet (30 meters), provide a separate power
supply for that group of
Output Modules. BAPI’s

RS485 TSP Wiring RS485 TSP Wiring

VC350A-EZ Voltage
Conv. and a small
transformer are a perfect
solution.

rev. 04/21/15

Note: This conguration
requires one or more

Receiver

Pluggable Terminal
Block Kits for the extra
wire terminations on the
left and right side of the
Output Modules. Each kit
includes 4 connectors.

Pluggable Terminal Block

Kit (BA/AOM-CONN)

Fig. 12: Extended RS485 Network between the Receiver and the Analog Output Modules

Wireless System Diagnostics

Possible Problems:

Temperature or Humidity is reading
its low limit or high limit, or the LED
at the top of the Analog Output Mod­ule is blinking rapidly:

Analog Output Modules Analog Output Modules

BAPI

VC350A

EZ Voltage

Converter

Transformer

BAPI

VC350A

EZ Voltage

Converter

Transformer

BAPI

VC350A

EZ Voltage

Converter

Transformer

Possible Solutions:

- Check for proper wiring and connections from the output modules to the controller.

- Check to see if the controller’s software is congured properly.

- Check for proper power to the receiver, repeater (if used) and output modules.

- Retrain the Analog Output Module.

- Check that the associated transmitter is transmitting (the LED will ash about once
every 20 seconds when it transmits). If not, replace the batteries. Check that the
associated receiver is receiving the tranmissions (its LED will blink right after the
transmitter LED if it receives that transmission.) If it is not receiving the transmissions,
move it closer to the transmitter or reposition the antenna for maximum reception.
Note: The receiver will receive transmissions from all transmitters that are within
range, not just the one you are testing.

Temperature or Humidity reading is

- Retrain the Analog Output Module.

coming out the wrong output module

Temperature or Humidity reading is
incorrect

- Check for proper wiring and connections from the output modules to the controller.

- Check to see if the controller’s software is congured properly.

- Check to see if the correct output module is connected to the correct controller.

Analog Output Module Default Status when Wireless Transmission is Interrupted:

If an output module does not receive data from its assigned transmitter for 15 minutes, the red LED on the top of the module will
blink rapidly. If this happens, the individual Analog Output Modules will react as follows:

• Resistance Output Modules (BA/ROM) calibrated for temperature will output the highest resistance in their output range.

• Voltage Output Modules (BA/VOM) calibrated for temperature will set their output to 0 volts.

• Current Output Modules (BA/COM) calibrated for temperature will set their output to 4 mA.

• Voltage Output Modules (BA/VOM) calibrated for humidity will set their output to their highest voltage (5 or 10 volts).

• Current Output Modules (BA/COM) calibrated for humidity will set their output to 20 mA.

• Setpoint Output Modules (BA/SOM) will hold their last value indenitely.

• Relay Output Modules (BA/RYOM Units Only) will go to their default state (example: open for a normally open unit).

When a transmission is received, the output modules will revert to normal operation in 60 seconds or less.

Specications subject to change without notice.

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