Installation Manual

ValveWatch II Hardware Installation and Setup Manual
Page 19 of 34
CRANE
Nuclear
Table 3. For the Example provided above, the Maximum Cable Length for two Sensor
Modules connected to MTL 7728P+
Table 4. For the Example provided above, the Maximum Cable Length for a
Communications Module in DOP mode connected to a SMAR SB-312
Calculation
Type
Capacitive
Litmus
Calculation
Inductive
Litmus
Calculation
Resistive Litmus
Calculation
Maximum
Length
Allowed
Apparatus
Classification
Length
(ft)
Length
(m)
Length
(ft)
Length
(m)
Length
(ft)
Length
(m)
Length
(m)
Ex ia IIC
Class I Group
A,B
2766 922 10038 3346 7560 2520
922
Ex ia IIB
Class I Group C
Class II Group E
29400 7222 29400 9800 92458.0 2520
2520
Ex ia IIA
Class I Group D
Class II Group
F,G
80000 23888 80000 26666 92458.0 2520
2520
Calculation
Type
Capacitive
Litmus
Calculation
Inductive
Litmus
Calculation
Resistive Litmus
Calculation
Maximum
Length
Allowed
Apparatus
Classification
Length
(ft)
Length
(m)
Length
(ft)
Length
(m)
Length
(ft)
Length
(m)
Length
(m)
Ex ia IIC
Class I Group
A,B
3000 1000 3000 1000 7560 2419
1000
Ex ia IIB
Class I Group C
Class II Group E
15000 5000 15000 5000 92458.0 2419
2419
Ex ia IIA
Class I Group D
Class II Group
F,G
15000 5000 15000 5000 92458.0 2419
2419