Detcon FP-700 - Modular Mechanical Design; Figure 4 ITM Circuit Functional Block Diagram; Figure 5 Sensor Assembly Front View

Model FP-700
FP-700 Instruction Manual Rev. 5.1 Page 3 of 46
Figure 4 ITM Circuit Functional Block Diagram
Program Switch #1
LED Display
Program Switch #2
Splashguard Adapter
Lockdown Set-Screw
detcon inc.
LEL Sensor
MODEL
FP-700
Figure 5 Sensor Assembly Front View
1.3 Modular Mechanical Design
The Model FP-700 Sensor Assembly is completely modular and made up of four parts (See Figure 6 for
Assembly Break-away):
1) FP-700 Intelligent Transmitter Module (ITM)
2) Field Replaceable Plug-in Combustible Gas Sensor
3) Model 700 Housing Bottom Assembly (contains the Housing Bottom, Flame Arrestor, Retaining Ring,
and rubber O-Rings)
4) Splash Guard.
NOTE: All metal components are constructed from electro-polished 316 Stainless Steel in order to maximize
corrosion resistance in harsh environments.
I/O
Circuit
Protection
RS-485
4-20mA
Display
Micro-
Processor
Temperature
Control
Pre-Amp
Analog 4-20mA Out
Modbus™ RS-485 Output
Power In
Power Supply
Plug-In
Sensor
Element