ETCR2800N built-in grounding resistance online detection

Description

ETCR2800N built-in grounding resistance online detection
Brief introduction
ETCR2800N built-in non-contact monitoring instrument online of grounding resistance is my company for more than ten years "grounding resistance testing technology research" one of the high-tech products, designed for on-line monitoring of ground down lead connection status, loop grounding resistance, the metal loop connecting resistance and carefully designed and manufactured.
Online testing, non-contact measurement, ground wire wear heart by, without self-checking, real-time detection.
Provide RS232 and RS485 or MODBUS RTU communication protocols, the sensor and circuit board can be placed inside other equipment cabinets, user-friendly integrated secondary development.
ETCR2800N built-in non-contact monitoring instrument online of grounding resistance is suitable for transmission line tower grounding;
Underground mine equipment grounding;
Meteorological grounding;
Petrochemical grounding;
Communications grounding;
Variable distribution substation grounding;
Grounding rail infrastructure;
Building warehouse grounding;
Electrical equipment grounding etc.
Can also be used for ground wire, metal cable anti-theft monitoring.
ETCR2800N built-in non-contact monitoring instrument online of grounding resistance can be used in a single installation, can be formed into use cable or wireless network system.
ETCR2800N built-in grounding resistance online detection instrument
2. Technical specification
Can work
Loop grounding resistance on-line monitoring on-line monitoring, grounding resistance, the metal loop connection status monitoring;
Ground wire, metal cable anti-theft monitoring.
Electrical source
6VDC～9VDC,50mA Max.
The resistance range
0.01 ~ 200 omega omega
The resolution of the
0.001 omega.
Output range
0.00 ~ 500 omega omega
Fine degree of
Plus or minus 2% RDG plus or minus 3 DGT (below 20 ° + 5 °, 70% RH)
The sensor size
110mm×80mm×55mm
PCB size
166mm×56mm×20mm
Ground hole size
66 mm x 36 mm, silent type
Overflow indication
Display values greater than 500 omega, communications sent "OL omega" instruction
PCB interface
J1: signal output, power input interface
J2: sensor and PCB connectors
J1 logo
P + : power input is
P - : power input fields
GND: signal, and the power input fields (P -) short answer
R + : signal output is
R - : signal output
J2 identity
I +, I - current coil interface
U + and U - voltage coil interface
GND: a total of
cable
Article 1, 1 m long (5 core shielded wire)
Cable marking
Red/brown - power input is;
Black - the power input fields;
Blue - RS485 signals are;
Grey - RS485 signal negative;
White - shielding;
(
The power input fields and shielding can short circuit connection
)
Agreement means
RS232 and RS485 or MODBUS RTU communication protocol
Mass quantity
About 680 g
Working temperature and humidity
-20°～55°;20％RH～90％RH
Temperature and humidity error
No more than 5%
shift
Fully automatic shift
Ground interference current
Should be avoided
External magnetic field
＜40A/m
The external electric field
＜1V/m
A single measurement of time
About 0.5 seconds
Power consumption
50mA Max.
Ann is installed
Ground wire wear heart center hole through sensors
Installation requirements
Circuit board need and in other cases, avoid rain, waterproof installation
The power supply mode
External power supply
accessories
Sensors: 1;
PCB modules: 1;
Line: 1 the
Payment Term:
1.We can accept Credit Cards,Paypal,T/T,Escrow and so on.
2.The buyer is responsible for any tax and/or duty charged by their country.
International Shipping:
The package will be shipped by DHL, FEDEX or EMS.
After we shipped the parcel,we'll fill in the tracking number and inform you by e-mail.
Please write the correct address and telephone number when you make orders,
so the courier can contact you when they deliver the parcel to you. thanks
Warranty Term:
1.All the products have been checked and packed in good condition before dispatch.
2.All the products with one year warranty.
3.If you find any quality problems,please send it back within 3 days,
and we'll send you a new one or refund you the payment after we get the returned one.
4.Buyers have to pay for the return cost and we will pay the cost for resend
5.All products returned should be in new conditions.
Feedback:
1.A good feedback is very important for our store,if you feel satisfied with our products,please give us  positive feedbacks.
2.Please contact us before leaving any negative or neutral feedback,We will work with you to solve any problems