User Manual & Datasheet V 1.2
20
For Namur Module
20.1
Electrical Specifications
Please refer to Table 6 for Electrical Specifications.
PARAMETER
VALUE
Input Power Supply
8
.
5
±
0
.
2
V DC. Namur type current output (I ON
≥
2.1 mA, I OFF
≤
1.2 mA) Namur compliance can be attained with a Namur certified isolator.
Switching
Single-point level switching / Pump Control Logic
Switching Indication
Red - Alarm & Green - Normal
Fail-safe
Field Selectable: Open - Fail-safe High (For High Level)
Close - Fail-safe Low (For Low Level)
Table 6: Electrical Specifications
20.2
Mechanical Specifications
Please refer to Table 7 for Mechanical Specifications.
PARAMETER
VALUE
Housing
•
SCUTE: Pressure die-cast aluminium weatherproof (Rating IP-68)
•
FP2C: Cast aluminium, weatherproof & flameproof, powder coated,
suitable for Gas Groups IIA, IIB & IIC as per IS-2148 (Rating IP-66)
Cable Gland
2 x 1/2” BSP/NPT , PG 13.5
Operating Temperature
−
20
◦
C to
60
◦
C (Electronics)
Mounting
•
Screwed: 1/2",1”,1 1/2", 3/4” BSP / NPT
•
Flanged: As per user specification
Probe Length
100 mm to 3000 mm
Insulation
Full PTFE
Table 7: Mechanical Specifications
21
Namur Isolation Barrier Specs
The ’NMR’ electronics of the Coat-Endure requires the following specifications to be functional:
Parameter
Value
Functional Operating Voltage
8
.
5
±
0
.
2
V DC
Internal Source Resistance
1K
Ω
Absolute Maximum Voltage
UI & UO = 13 V
Current Consumption
II & IO = 16 mA
Power Consumption
PI & PO = 65 mW
Input Capacitance
0 uF
Input Inductance
LI = 22 uH
Certification
Ex ia IIC T6 Ga (-20
°
C
≤
Tamb
≤
60
°
C)
Table 8: Namur Isolation Barrier Specifications
Sapcon Instruments Pvt.Ltd.
®
18