USER GUIDE FOR WIRELESS SENSOR 0-20MA CURRENT INPUT WS433-MA

WS433-MA-MN-EN-01  

MAR-2020

This document is applied for the following products

SKU

WS433-MA

HW Ver.

2.5

FW Ver.

5.0

Item Code

WS433-MA-11

Wireless Sensor 1-channel 0-20mA DC current input, IP67, battery AA 1.5VDC, shielded cable 0.5m length with PG9 cable gland

   

1. Functions Change Log

HW Ver. FW Ver. Release Date Functions Change
2.5 5.0 DEC-2019
  • Change RF data rate by button
       

2. Introduction

Wireless sensor with one channel to measure 0-20mA DC current from Process instruments like Pressure transmitter, Temperature transmitter, Level transmitter, Flow meters, Analyzers... at very low voltage drop. It is configured the operation parameters like data sending interval, health check cycle...remotely from Globiots platform or via ModbusRTU software. The wireless module can last up to 10 years with a single AA battery.

WS433-MA-H1.png

3. Specification

Measuring range 0 .. 20mA
Accuracy 0.05% of span
Resolution 1/3000
Temperature drift < 50ppm
Electrical connection shielded cable 0.5m length with PG9 cable gland
Optional accessories 304SS Adapter PG9/male 1/2"NPT or PG13.5 or M20 to allow direct mounting on Process instruments or electrical panel
Data speed Up to 50kbps
Tranmission distance, LOS 500m
Antenna Internal Antenna, 3 dbi
Battery 01 x AA 1.5VDC, up to 10-year operation, depends on configuration
Frequency Band ISM 433Mhz, Sub-GHz technology from Texas Instrument, USA
Receiving Sensitivity -110dBm at 50kbps
International Compliance ETSI EN 300 220, EN 303 204 (Europe) FCC CFR47 Part15 (US), ARIB STD-T108 (Japan)
Security Standard AES-128
Operating temperature of PCB -40oC..+60oC (with AA L91 Energizer)
Housing Poly-carbonate, IP67
Installation method L-type bracket SUS304 , by M4 screws or double-sided 3M tape (included)
Product dimensions 125x30x30mm
Net weight (without battery) < 100g
Box dimension 190x50x50mm
Gross weight 140g

4. Product Pictures

WS433-MA-H1.png WS433-MA-H2.png
WS433-MA-H3.png WS433-MA-H4.png
WS433-MA-H5.png WS433-MA-H6.png
WS433-MA-H7.png WS433-MA-H8.png

5. Operation Principle

Process of measurement

When the sensor sampling time interval is reached, for example 2 minutes, the node will wake up and switch ON the power supply to supply the energy to external sensor to start the measurement. Depends on the type and characteristic of external sensor, the sensor will take a certain time to finish the measurement.

For example, the measurement time is 200mS, after this time, the node will read the value of sensor using I2C, node will switch OFF power supply to external sensor to save energy.

Once reading the sensor value, the raw data is X, it can be scaled to any engineering value by the following formula:

Y = aX + b

Where

X: the raw value from sensor

Y: the calculated value for parameter 1's value or parameter 2's value

a: constant (default value is 1)

b: constant (default value is 0)

 

So, if there is no user setting for a and b ==> Y = X

The Y value will be compared with Lo and Hi threshold.

 

Status bytes of sensor Node

  • Hi-Byte is error code
Error code Description
0 No error
1 Just exchange the sensor module but node has not been reset ==> please take out the battery for 20s then install it again to reset node to recognize the new sensor module
2 Error, sensor port M12F shorted to GND
3 Error, sensor port M12F shorted to Vcc
4 Error, sensor port M12F shorted each other
  • Lo-Byte is sensor type
Error code Description
0 No error
1 Just exchange the sensor module but node has not been reset ==> please take out the battery for 20s then install it again to reset node to recognize the new sensor module
2 Error, sensor port M12F shorted to GND
3 Error, sensor port M12F shorted to Vcc
4 Error, sensor port M12F shorted each other

6. Configuration

6.1 Button Function

Use the push button to set the data transfer speed for the first 30 seconds when the battery is first installed, after 30 seconds the push button function does not work.

  • Press and hold the button for 2 seconds => LED blinks once => Release the button to set Data rate RF 50kbps
  • Press and hold the button for 5 seconds => LED blinks twice => Release the button to set Data rate RF 625bps
  • Press and hold the button for 10 seconds => LED blinks 3 times => Release the button to reset RF parameters (frequency, RF output power, data rate), if held for more than 30 seconds then the button function does not work.

6.2 Sensor Memmap

Read Sensor status information in the packet sent to know whether the sensor is operating in "Modbus Memmap of WR433-FW_V1.9 for WS433-FW_V5.xx.xlsx" as the following link for more information.

http://filerun.daviteq.com/wl/?id=jhA8Bk46jtMORODSOuKfEwVajKEGeSPX

6.3 Wireless sensor configuration with co-ordinator

You can configure the wireless sensor with the co-ordinator by following the steps in the link below:

http://www.daviteq.com/en/manuals/books/long-range-wireless-co-ordinator-ws433-cl/page/user-guide-for-long-range-wireless-co-ordinator-ws433-cl

7. Installation

7.1 Mounting bracket installation

Wireless Sensor WS433-MA has been mounted mounting bracket.

7.2 Installation location

Wireless sensor utilize the ultra-low power 433Mhz RF signal to transmit/receive data with Wireless co-ordinator.

To maximize the distance of transmission, the ideal condition is Line-of-sight (LOS) between the two modules. In real life, there is no LOS condition. However, the two modules still communicate each other, but the distance will be reduced significantly.

Therefore, to maximize the transmission distance, please pay attention to the following conditions:

  • DO NOT install the wireless module inside a complete metallic box or housing. The RF signal can not pass through metallic wall;
  • This wireless module would be installed a semi-metallic box, because the RF signal can pass through the non-metal wall/are;
  • The best case is to install the wireless module inside or Non-metallic box;

Some non-metallic materials: plastic, glass, wood, leather, concrete, cement…

WS433-MA-H10.png

7.3 Power Supply & Battery installation

Steps for battery installation:

  • Using Philips screw driver to unscrew M2 screw at the side of housing

WS433-MA-H11.png

  • Carefully pull out the top plastic housing in the vertical direction

WS433-MA-H12.png

NOTE: Because of O-ring, it requires to have much pulling force at the beginning, therefore please do it carefully to avoid the damage of circuit board which is very thin (1.00mm);

  • Insert the AA battery, please take note the poles of battery

WS433-MA-H13.png

  • Insert the top plastic housing and locking by M2 screw

WS433-MA-H14.png

8. Troubleshooting

No. Phenomena Reason Solutions
1 The status LED of wireless sensor doesn't light up
  • No power supply
  • Configuration function of the LED is not correct
  • Check that the battery is empty or not installed correctly
  • Reconfigure the led light function exactly as instructed
2 Wireless sensor not connected to co-ordinator
  • No power supply
  • The configuration function of the RF data rate is incorrect
  • Check that the battery is empty or not installed correctly
  • Reconfigure the RF data rate with the button according to the instructions

9. Support contacts

Distributor in Malaysia

AVO.png

AVO Technology Sdn. Bhd.

Official Website: www.avo.com.my

No. 17, Jalan 3/23A, Taman Danau Kota, 53300 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia

General : +603-4143 2288

Mobile : +012-376 7181
Fax : +603-4143 3388

Distributor in Australia and New Zealand

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Templogger Pty Ltd

Tel: 1800 LOGGER

Email: contact@templogger.net

Manufacturer

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Dai Viet Controls & Instrumentation Company Ltd.
No.11 Street 2G, Nam Hung Vuong Res., An Lac Ward, Binh Tan Dist., Ho Chi Minh City, Vietnam.
Tel: +84-28-6268.2523/4 (ext.122)

Email: info@daviteq.com | www.daviteq.com