Emerson 3095, 00825-0100-4716 China NEPSI Certifications, Special conditions for safe use, L i ≈

Quick Installation Guide

Rosemount 3095 MultiVariable

00825-0100-4716, Rev DA October 2009

China (NEPSI) Certifications

2China Intrinsic Safety Ex ia IIC T4

Special conditions for safe use (x):

1.3095 Series transmitter with temperature sensor have not been certified.

2.The temperature of process medium should be less than 121 °C.

3.The ambient temperature range is (-40~+60) °C.

4.Safety parameters

4.1 Input parameters

4.1.1 Transmitter with output code “V”

Ui = 30V	Ii = 300 mA Pi = 1.3W Ci ≈ 0		Li ≈ 0
4.1.2 Other transmitters
Ui=40V	Ii=165 mA	Pi=1.0W Ci=0.012 μ F	Li=20 μ H
4.2 RTD terminals
Uo=30V Io=12 mA		Po=100 mW Co=66nF	Lo=100 mH

5.The cable entry of transmitter should be protected to ensure the degree of protection of the enclosure IP 20 (GB4208-1993) at least.

6.The terminals for connection to power supply of transmitter should be connected to associated apparatus certified by NEPSI in accordance with GB3836.1-2000 and GB3836.4-2000 to establish intrinsic safety system, it has to fulfill the following requirements:

Uo≤Ui Io≤Ii Po≤Pi Co≥Cc+Ci Lo≥Lc+Li

Note: Cc, Lc the distributed capacitance and inductance of the cables Uo, Io, Po maximum output parameters of associated apparatus

Co, Lo, maximum external parameters of associated apparatus

7.The terminals for connection to sensor of transmitter should be connected to intrinsic safety sensor certified by NEPSI in accordance with GB3836.1-2000 and GB3836.4-2000 to establish intrinsic safety system, it has to fulfill the following requirements:

Ui ≥ Uo Ii ≥ Io Pi ≥ Po Ci ≤ Co-Cc Li ≤ Lc+Lo

Note: Cc, Lc the distributed capacitance and inductance of the cables

Ui, Ii, Pi maximum input parameters of intrinsic safety sensor

Ci, Li, maximum internal parameters of intrinsic safety sensor

8.The cables between the transmitter, associated apparatus and sensor are 2-core shielded cables (the cables must have insulated shield). The cable core section area should be more than 0.5 mm2. The shielded has to be grounded in non-hazardous area and isolated from the housing. The wiring has to not be affected by electromagnetic disturbance.

9.Associated apparatus should installed in a safe location, and during installation, operation and maintenance, the regulations of the instruction manual have to be strictly observed.

10.End users is not permitted to change any components insides.

22