無綫電壓數據記錄儀 PRECISE-LOG PL-VW
無綫電壓數據記錄儀 PRECISE-LOG PL-VW：圖片 2
無綫電壓數據記錄儀 PRECISE-LOG PL-VW：圖片 3
無綫電壓數據記錄儀 PRECISE-LOG PL-VW：圖片 4

$688.00

產品名稱:    無綫電壓數據記錄儀
生產產商:    MICROEDGE INSTRUMENTS (CANADA)
原產地:        加拿大 (Made in Canada)
產品系列： PRECISE-LOG
產品編號:    PL-VW

所有價格為美金 (US dollar, US$)
第一次購買贈送一個128GB microSD卡

分類:

描述

產品名稱:    無綫電壓數據記錄儀
生產產商:    MICROEDGE INSTRUMENTS (CANADA)
產品系列： PRECISE-LOG
產品編號:    PL-VW

PL-VW是一款8通道，電池供電，獨立且具有WIFI功能的電壓數據記錄器。 記錄器記錄了八個外部電壓源，並將數據保存在8 MB的內存中。
其鋁製外殼使它在最惡劣的工業環境中也表現出色。
嵌入式WIFI模塊可實現遠程數據監控和下載。
16位ADC使其非常適合需要精確測量的科學和實驗室應用。
只需在WIFI覆蓋區域為記錄器供電，即可從您的計算機訪問記錄器以進行配置，下載，查看圖形等等。

特徵：
  • 16位模數轉換器
  • 8 MB內存大小
  • USB和WIFI通信。 波特率為115200 bps的接口
  • 可編程輸入範圍（5 VDC，20 VDC）
  • 超過10年的電池壽命
  • 功能強大的軟件，用於配置，下載，繪圖，分析和警報報告
  • 廣泛的採樣間隔選擇（一秒至十二小時）
  • 堅固的鋁製外殼

額外資訊

重量 0.6 公斤
尺寸 22.8 × 15.2 × 10.1 公分

規格參數

Product Name PRECISE-LOG Voltage Data Logger
Model PL-VW
Inputs
Connection Plugable terminal block for eight external channels
Channels Eight external voltage DC. Programmable input selections for each external channel: 0 ~ 20 VDC 0 ~ 5 VDC
Resolution 0.0018%
Accuracy ±0.05% FSR @ 25 °C
Input Impedance > 1 MOhms
Over-Voltage Protection Up to ± 40 VDC
Alarms
Channel Alarms Two editable alarm thresholds per channel.
Alarm Indicator On-board LED becomes red when in alarm condition.
On-board Memory
Size 8 Mega bytes (4MB readings).
Data Retention Over 20 years.
Sampling
Sampling Interval 1 second to 12 hours user selectable.
Logging Mode Stop recording or FIFO when memory is full.
Logging Activation Programmable instant, start delay or field push button activation.
Communications
Interface USB (Mini-USB-B) (USB-A-mini USB-B Cable included) WIFI (USB 5 VDC wall power adapter included)
WIFI Module Standard: 802.11b/g/n, Frequency Range: 2.412 - 2.484GHz Transmit Power: 11-18 dBm Receive Sensitivity: -82 to -93 dBm Security: WEP/WPA-PSK/WPA2-PSK Encryption: WEP64/WEP128/TKIP/AES Can be Enabled/Disabled by SiteView software
Baud Rate 115200 bps.
Battery
Power Built-in 3.6V Lithium Battery.
Battery Life 10 years based on 1 minute sampling interval in stand-alone mode.
Software
SiteView (Sold separately) Configuration, downloading, plotting, real-time view, custom calibration and custom equation.
Software Requirement Computer with 1.0 GHz or faster processor 1 GB Memory or higher 10 GB of available hard-drive space or higher Windows XP with SP2 or later, Vista, Window 7,8,10 At least one USB port or one COM port.
Physical
Material Aluminum enclosure.
Dimension 88 X 64.2 X 24 mm (3.46 X 2.53 X 0.95 inches).
Weight 200g
Mounting Probe/wall-mount holes for hanging/mounting.
Others
LED Indicator Tri-Color LED: (can be disabled for power saving) Normal Sampling: light green when sampling. Alarm: red when sampling. Low Battery: amber when sampling.
Operating Environment -40 ~ +70 °C (-40 °F ~ 158 °F), 0 ~ 95% RH non-condensing.
Clock Accuracy ±1 mintue per month.
Approval CE, FCC

Logger Memory Capacity

Sampling Interval Enabled Channel Logging Capacity
1 minute 1 8 years
1 minute 2 4 years
1 minute 8 1 year
10 seconds 1 485 days
10 seconds 2 242 days
10 seconds 8 60 days
1 second 1 48 days
1 second 2 24 days
1 second 8 6 days

Modbus

From July 15th, 2019, Modbus TCP protocol will be added to all PRECISE-LOG series of data loggers. A Modbus master/client can read one or more Input Registers and Holding Registers available in a PRECISE-LOG data logger through Modbus TCP communications. The below specifications list all supported commands and available registers PL-VW data logger supports:

Input Registers:

An Input Register stores a 16-bit integer for a channel’s real-time reading. To read one or more 16-bit Input register data, use function code 4.

Register Description Type Range
0 CH0 Value Unsigned Integer 0 - 65535
1 CH1 Value Unsigned Integer 0 - 65535
2 CH2 Value Unsigned Integer 0 - 65535
3 CH3 Value Unsigned Integer 0 - 65535
4 CH4 Value Unsigned Integer 0 - 65535
5 CH5 Value Unsigned Integer 0 - 65535
6 CH6 Value Unsigned Integer 0 - 65535
7 CH7 Value Unsigned Integer 0 - 65535

Example:

To read CH2, CH3 and CH4's real-time values, a Modbus master device sends in the following command:

Data(HEX) Description Note
0001 Transaction identifier Fixed 2-byte value
0000 Protocol identifier Fixed 2-byte value
0006 Length(6 bytes are followed) 2-byte value
01 The device address 1-byte value, don't care
04 Function Code (read Input Register) 1-byte value
0002 First register's address 2-byte value
0003 The number of required registers (read 3 registers 0002 to 0004) 2-byte value

Holding Registers:

A Holding Register stores a 16-bit integer indicating a setting for the data logger. To read one or more 16-bit Holding Register data, use function code 3.

Register Description Type Range/Equation
0 Sample Interval 0: below 1 second >=1: sample interval in second 0 - 65535 seconds
1 Device Operating Mode 0: logging stopped 1: logger is logging data
X0 CHX-1 Type 0: Range#0 (0 to 20 VDC) 1: Range#1 (0 to 5 VDC) 2: Range#2 (-5 to +5 VDC)
X1 CHX-1 Enabled 0:disabled 1:enabled If a channel is disabled, the reading is unknown
X2 CHX-1 Equation 0: Range#0 Voltage Range: 0 to 20 VDC Equation O = 20 * I / 65535
1: Range#1 Voltage Range: 0 to 5 VDC Equation: O = 5 * I / 65535
2: Range#2 Voltage Range: -5 to +5 VDC Equation: O = 10 * I / 65535 – 5
3: Linear O = (LRH – LRL) * I / 65535 + LRL Where: LRH is Linear Range high value LRL is Linear Range low value You can get those values from SiteView

Where X = 1,2,3,4,5,6,7,8 O = Output, I = Input Register Value

Example:

To read CH3's equation, a Modbus master device sends in the following command:

Data(HEX) Description Note
0001 Transaction identifier Fixed 2-byte value
0000 Protocol identifier Fixed 2-byte value
0006 Length(6 bytes are followed) 2-byte value
01 The device address 1-byte value, don't care
03 Function Code (read Holding Register) 1-byte value
002A First register's address (42 is 2A in HEX) 2-byte value
0001 The number of required registers (read 1 registers 002A) 2-byte value

Note:

  1. Modbus feature was added to firmware version 2.05 or above.To upgrade a data logger's firmware please refer to this link: How can I upgrade logger firmware?
  2. The age of an Input Register data is based the data logger's sample interval.If the logger has stopped logging or the logger's sampling interval is slower than five seconds, a request of Input Register data will initiate the sampling process and the new data will be available upon the next request.

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