Eltav Wireless Monitoring Ltd. VDA1114 사용자 설명서
ELTAV Wireless Monitoring Ltd.
Page 12 of 12 7 March 2010
15 HaTa'asia St., Ra'anana, 43654, Israel
Tel: +972-9-7440012, Fax +972-9-7440026 Cel: +972-52-8551234 email:
Tel: +972-9-7440012, Fax +972-9-7440026 Cel: +972-52-8551234 email:
Israel.kalman@eltav.com
Web:
www.eltav.com
Valve Device
(VD)
(VD)
Sense Movement
Duration
Duration
Between 30 msec to 4 minutes
Sector
Quarter turn: - 10
0
to +100
0
Resolution
0.1
0
Accuracy
±1
0
Calibration and setup on
valve
valve
Using Operator Device (OD) with short range Low Frequency wireless
communication between OD and VD.
communication between OD and VD.
Battery
2 X Lithium Tadiran ½ AA TL4902. Field replaceable.
Battery Life
5 years assuming one valve position change per hour and nominal
configuration.
configuration.
Message timing
Each message is sent by VD with real time stamp
VD max Transmitted
Power
Power
+3dBm.
VD Antenna
Internal +2 dBi peak. Optional external antenna F-SMA connector (VD
mounted or remote).
mounted or remote).
Communication range
VD - VDR
VD - VDR
Open space – about 70m.
In doors at non obstructed environment – about 25 m.
In doors at non obstructed environment – about 25 m.
Additional VD
Measurements
Measurements
VD internal temperature, battery voltage and unit's house-keeping
parameters.
parameters.
Valve Transition
Measurement (optional)
Measurement (optional)
After 1
0
move of valve, VD collects up to 64 readings of valve position every 5
ms up to 9.6 sec (user selectable in discrete steps) and transmits them as a
packet.
packet.
Valve Device
(VD)
(VD)
Cont.
VD software upgrade
Both the Zigbee stack and the MCU application can be upgraded through the
Zigbee link (DOR – Download Over Radio).
Zigbee link (DOR – Download Over Radio).
Case Material
Nylon 12 with 50% glass beads, UV stable
Environmental
Operating Temperature
(VD/VDR/TVDR)
(VD/VDR/TVDR)
-40
0
C to 85
0
C
VD/VDR/TVDR sealing
IP66 grade
VD ATEX
Category 2 / Division 1 - II 2 GD EEx ia IIC T6 (intrinsic safety Zone 1/21)