Sentinel-II Explosion-Proof Valve Position Transmitter

The SENTINEL-II brings the acclaimed Moniteur indicator to Class 1, Division 1 Group A and B environments. It's rugged design, superior valve position indication, and sleek design provide a package with many innovations. Moniteur's Engineered Loc-Ring Cam and Shaft retention system allows a multi-million cycle life, even in harsh environments.

Download Catalog Sheet

Download Specifications

Moniteur's VPT Selection Guide

Bracket Kits and Mounting Hardware

Download I & M

Common Spare Parts

Hazardous Area Classification

Class 1, Division 1 and 2 Groups A, B, C, D and Class 2, Division 1 Groups E, F, G with no seal fitting required in Division 1 and 2 areas - all groups

Features & Benefits of Moniteur's Sentinel-II VPT

Moniteur’s patented Loc-Ring Cam and Shaft Retention System ensures sensing accuracy and a multi-million cycle life of the physical platform.

Standard shaft flats prevent coupler from disengaging from the actuator

Available with Moniteur's wide variety of reliable switches and sensors for today's advanced control systems. Our switch selection guide is listed below.

Internal Switches and terminal block are labeled for easier installation.

Indicator materials are resistant to harsh chemicals and located away from the vapor path of leaky valves

Clear Ektar cover offers excellent chemical resistance and strength and is environmentally sealed to prevent fogging or entry of contaminants.

Moniteur's patented indicator has a rated minimum life of 1,000,000 cycles. With indicators still in service after 9 million cycles, you're assured of long-term reliability.

Indicator is 100% adjustable to any valve or actuator.

The industry's only "true" visual valve position indicator available for multi-port valves, adjustable to match the physical flow pattern of the valve. See the many configurations below.

"Flat cover" version available without indicator is a cost effective option where visual indication is not required or there are space contraints.

Optional thermoplastic quick-mount bracket for NAMUR actuators stands up to corrosive environments by sealing the area between the actuator top and limit switch housing.

Intelligent Part Number System - Specify Your Sentinel-II

1 - Series		6 - Switch Type
Sentinel-II	C	Mechanical
2 - Cover		Cherry SPDT - 15A	1
With Moniteur	M	Prism Gold SPDT - 1A	3
Flat Cover	F	ITW DPDT - 10A	4
3 - Moniteur		Non-Contact (Proximity)
No Indicator	N	Tungsten TTL SPDT- 3A	2
Black / Yellow	Y	Rhodium TTL SPDT - 1A	T
3-way path O	O	Bifurcated TTL SPDT - 3A	B
3-way path T	T	Inductive Sensors
3-way path F	F	P&F NJ2 -V3 (NAMUR)	8
4-way path S	S	P&F NBB3-V3-Z4	K
180 degree T	1	Moniteur NAMUR	M
Green / White	G	7 - Switch Quantity
Red / White	R	1-2	1-2
Blue / White	B	8 - Conduit
Green / Red	A	(1) F 3/4" NPT + (F) 1/2" NPT	4
Red / Green	C	(1) F 3/4" + (2) F 1/2" NPT	7
4 - Bearing		(1) F 3/4 " + (1) M 1/2" NPT	8
Bronze	B	Options - Add Suffix
303 Stainless	S	Output
5 - Shaft		Current 4-20 mA	420
Standard 303 SS	1	Resistive 0-1000 ohm	1K
Standard 316 SS	3	Other
NAMUR 303 SS	5	High Temperature	HT
NAMUR 316 SS	7	Viton Seals	V
LONG NAMUR 303 SS	E

Most common items available for quick delivery:

CMYB-1124	CMYB-1424	CMYB-1224	CMYB-1T24
CFNB-1124	CFNB-1424	CFNB-1224	CFNB-1T24
CMYB-5124	CMYB-5124	CMYB-5224	CMYB-5T24
CFNB-5124	CFNB-5124	CFNB-5224	CFNB-5T24

Moniteur Switch and Sensor Selection Guide

Mechanical SPDT and DPDT Switches

The most popular switch for general purpose applications is rated 15A at 120 VAC and 2.5V at 24 VDC. Our standard mechanical switches are specified with higher operating forces and offer better resistance to freeze up. Gold Plated SPDT switches rated at 1A at 24 VDC are a low-cost alternative for intrinsically safe applications. DPDT Mechanical Switches rated at 10A / 125 VAC and 7A / 24VDC are also available. Specifications

Non-Contact TTL SPDT (proximity-type) Switches

These hermetically sealed switches set the standard for reliability. Tungsten TTL switches are used for high current AC and DC applications with a rating of 3A at 120 VAC and 2A at 24 VDC. Choose Rhodium TTL for low voltage / low current DC and Intrinsically Safe applications. Optional LEDs are also available on the Krystal TTL with Rhodium contacts. NOTE: Switches with Tungsten contacts are not recommended for DC signals lower than 50 mA. Specifications

NAMUR, PNP or NPN Inductive Sensors

A wide variety of industry standard sensors is available to interface with control systems found in today's modern process plants. Specifications

Optional 4-20ma Transmitters and 0-1K ohm Potentiometers

Current or Resistive Output are available for 0-100% / 4-20mA feedback. Our electronics have been designed for severe applications and have been proven to outperform our competition in the toughest of environments. Specifications

Moniteur's Visual Indicator Options


Black / Yellow	Full Green / Full Red	Full Red / Full Green

Red / White	Green / White	Blue / White


3 Way Path O	3 Way Path O Reversed

3 Way Path T	3 Way Path T Reversed

3 Way Path F	3 Way Path F Reversed

120 degree "PIG"	3 Way 180 degree path T

0-100 % Digital	3 Way Path S
0-100 % Digital	3 Way Path S


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Moniteur Devices, Inc. 36 Commerce Road, Cedar Grove, NJ 07009 T 973.857.1600 F 973.857.7289