BAPI 49733 Wireless Immersion Temperature Sensor Instruction Manual

**BAPI 49733 Wireless Immersion Temperature Sensor Instruction Manual

**

Overview and Identification

Wireless Immersion Temperature Sensor

• User adjustable settings
• Onboard memory
• Transmits to a digital Gateway or a wireless-toanalog Receiver

BAPI’s Immersion Wireless Sensor measures the temperature and transmits the data via Bluetooth Low Energy to a receiver or gateway. This unit features a rugged IP66-rated BAPI-Box enclosure and stainless steel ¼” (6.4mm) probe with standard probe lengths from 2” to 8” (51 to 203mm).

Adjustable Settings

BAPI’s wireless devices have several settings that can be can be field adjusted to suit the needs of the installation. All settings are configured by either the gateway or the receiver. (See the gateway or receiver instructions documents available on the BAPI website for more information on adjusting the settings.)

Sample Rate/Interval – The time between when the sensor wakes up and takes a reading. The available values are 10 sec, 30 sec, 1 min, 3 min or 5 min with the gateway, or 30 sec, 1 min, 3 min or 5 min with the receiver.

Transmit Rate/Interval – The time between when the sensor transmits the readings to the gateway or receiver. The available values are 30 sec, 1, 2, 3, 4, 5, 10, 15, 20 or 30 minutes, or 1, 6 or 12 hours with the gateway, or 1, 5, 10 or 30 minutes with the receiver.

Delta Temperature – The change in temperature between sample intervals that will cause the sensor to
override the transmit interval and transmit the changed temperature at the next sample interval. The available values are 0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 3, 4, 5 °F or °C with the gateway, and 1 or 3 °F or °C with the receiver.

Temperature Min/Max – The maximum or minumum temperature that will cause the sensor to override the transmit interval and immediately transmit a reading to the gateway. (Only available when using a gateway.)

Temperature Offset – Adjusts the temperature value being transmitted to match that of a calibrated reference device. The available values are ±0.1, 0.2, 0.5, 1, 2, 3, 4 or 5 °F or °C. (Only available when using a gateway.)

Associated Receiver or Gateway

RECEIVER (Wireless-to-Analog)
The wireless receiver from BAPI receives the data from one or more wireless sensors. The data is then transferred to the analog output modules and converted to an analog voltage or resistance. The receiver supports up to 32 sensors and up to 127 different analog output modules.

GATEWAY
The wireless gateway from BAPI receives the data from one or more wireless sensors. The gateway then provides the data to the cloud via MQTT. The gateway also sends a confirmation signal to each sensor upon a successful reception of data. The gateway supports up to 32 sensors.

Please see BAPI’s Wireless Quick Start Guide, or the gateway or receiver instructions documents available on the BAPI website to establish communication between the sensors and the gateway or receiver.

Initial Activation

Battery Power Units
The unit comes with two pre-installed batteries. To activate the unit, open the cover to access the batteries. Find the battery tab insulators and pull them out. Press the Service button and the Service LED should flash once to confirm power.
Fig. 1: Battery Power Unit

Wire Power Units
To activate the unit, open the cover to access  the circuit board and apply the 9 to 30 VDC or 24 VAC to the power terminals as shown. Press the Service button and the Service LED should flash once to confirm power.
Fig. 2: Wire Power Unit

Thermowells and Immersion Sensors

Immersion unit probes are designed to be inserted into a thermowell. Standard thermowells from BAPI include machined 304 and 316 stainless steel and brass, and two-part welded 304 stainless steel. The Thermowell chosen for an installation is governed mainly by the corrosion conditions the well will face. Occasionally, the material consideration is one of strength rather than corrosion. For example, a machined stainless steel well may be required for high pressure water service where otherwise a brass or two-part stainless steel well would be satisfactory from a corrosion standpoint. The two-part welded stainless steel thermowells are not intended for service in moving water. Do not mount the two-part thermowells close to the inlet or outlet pipe of the tank.

Fig 5 shows a typical four-inch thermowell and four-inch immersion probe installed into an eight-inch pipe.

Fig. 3: Machined Thermowell

Fig. 4: Two-Part Welded Thermowell

Fig. 5: Typical Sensor and Thermowell Installation

Immersion Sensor Installation

Immersion probes come with a plastic fitting that screws into the threads at the top of the thermowell. Pull the probe away from the plastic fitting until the probe is fullly extended. Insert the immersion probe into the thermowell until the plastic fittings come into contact with the threads in the thermowell. Hand tighten the immersion sensor snugly into the thermowell without too much torque. The unit is designed so that the temperature probe slides back into the enclosure as the sensor contacts the bottom of the thermowell. Make sure that the tip of the immersion sensor probe is in good contact with the bottom of the thermowell by pushing on the flaired end of the probe until the tip bottoms out in the thermowell.
Fig. 6: BAPI-Box Unit Before Insertion

Fig. 7: BAPI-Box Unit Inserted

Installation in Pipes Less than 3” in Diameter

T- Mount
Fig 8 shows how a 2” Tee and a 1/2” to 2” bushing allows a 2” thermowell to measure the temperature of the contents of a 2” water pipe. Be sure to use a thread sealant on the outside threads of the thermowell. Corner Mount

Fig 9 shows how a pipe Tee can be used in an elbow application. A 2” tee and a 1/2” to 2” bushing allows a 4” thermowell to measure the temperature of the contents of a 2” water pipe.

Note: Temperatures in pipes as small as 1-1/4” may be measured by this method. In small pipes, the diameter of the thermowell may become a significant obstruction, so be sure to check for proper flow rates after installation is complete.

Fig. 8: Typical T-Mount

Fig. 9: Typical Corner Mount

Operation

Power the unit as described in “Initial Activation” section. Follow the gateway or receiver instructions for pairing the unit and changing the adjustable settings. (The instructions are available on the BAPI website.)

Fig. 10: Battery Power Unit

Fig. 11: Wire Power Unit

Wireless Sensor Reset

Sensors remain paired to the gateway or receiver and output modules when power is interrupted or the batteries are removed. To break the bonds between them, the sensors need to be reset. To do this, press and hold the “Service Button” on the sensor for about 30 seconds. During those 30 seconds, the green LED will be off for about 5 seconds, then flash slowly, then begin flashing rapidly. When the rapid flashing stops, the reset is complete. The sensor can now be paired to a new receiver or gateway. To re-pair to the same receiver or gateway, you must reset the receiver or gateway. Output modules that were previously paired to the sensor do not need to be re-paired.

Onboard Memory

Sensor retains up to 16,000 readings should the communication become interrupted. The sensor only stores readings from missed transmissions and only when the sensor is paired to a gateway. Once communication is re- established with the gateway, the stored readings are transmitted and then erased from the sensor. The current reading and nine previous readings are sent at each transmit interval until the sensor is caught up.

Battery Replacement

Open the cover to access the batteries (Fig 6). Remove the batteries from their holders and discard in an environmentally safe manner. Replace with new batteries in the correct orientation.

Battery Specifications:
Two 3.6V Lithium batteries:
(#14505, 14500 or equivalent)

Diagnostics

Possible Problems:
Sensor is not communicating with the gateway or receiver, or the transmitted values are  incorrect.

Possible Solutions:
Make sure the sensor is within range of the gateway or receiver. Verify that the green LED on the sensor circuit board flashes when the “Service” button is pressed, indicating a transmission. If it does not flash, replace the batteries.

Verify that the sensor is properly paired to the gateway or receiver and analog output modules as described in the gateway or receiver instructions available on the BAPI website. Re-pair them if needed. If necessary, perform the “Wireless Sensor Reset” procedure as described on the pg 3.

Specifications

• Battery Power: Two included 3.6V 14505, 14500 or equivalent lithium batteries
  (Note: Standard AA batteries are not compatible)

• Wire Power: 9 to 30 VDC or 24 VAC, halfwave rectified

• Temperature Sensor Accuracy: ±1.0°F (0.55°C) from 32 to 158°F (0 to 70°C)

• Temperature Range: -4 to 221°F (-20 to 105°C)

• Transmission Distance: Varies by application*

• Environmental Operation Range:

• Temp: -4 to 149°F (-20 to 65°C)

• Humidity: 10 to 90%RH, non-condensing

• Enclosure Rating, Material & Material Rating: IP66, UV-Resistant Polycarbonate, UL94 V-0

• Frequency: 2.4 GHz (Bluetooth Low Energy)

• Receiver Sensitivity: -97 dBm

• User Adjustable Settings:

• Delta T (Temp): 0.1°F/C to 5.0°F/C

• Transmit Interval: 30 sec to 12 hour

• Sample Interval: 10 sec to 5 min

• Temp Offset: ±0.1°F/C to ±5.0°F/C

• Onboard Memory: Sensor retains up to 16,000 readings should the communication become interrupted. If using a Gateway, the data is re-transmitted once communication is re-established.

• Agency: RoHS

In-building range is dependent on obstructions such as furniture and walls and the density of those materials. In wide open spaces, the distance may be greater; in dense spaces, the distance may be less.

Actual battery life is dependent on the sensor’s adjustable settings and environmental conditions.

Calculated Battery Life**

Transmit Interval| Sample Rate| Estimated Life (years)
30 sec| 30 sec| 1.04
1 min| 1 min| 1.95
3 min| 1 min| 3.46
5 min| 5 min| 4.63
10 min| 5 min| 7.02

Specifications subject to change without notice.

Costumer Support

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800
Fax+1-608-735-4804
E-mail: sales@bapihvac.com 
Web: www.bapihvac.com

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