Speed Switches

Speed switches are used to monitor engine rpm in automatic diesel engine overspeed protection systems. In the event of an engine overspeed condition, the speed switch will immediately take action to shut down the diesel engine. We have a several types of switches for use in a wide range of automatic shutdown systems including electric, hazardous area electric, and hydro-mechanical switches.

4110 Hydro-Mechanical Overspeed Sensing Valve

Adjustable range:	800 - 4200 RPM
Repeatability:	+/- 2%
Body:	Gulfproofed (anodized) aluminum
Internals:	Steel and stainless steel
Seals:	Viton (oil)	Buna N/Nitrile (air)
Two-way valve thread:	1/4” NPT
Flow Coefficient:	Kv = 0.56	Cv = 0.65
Max. valve pressure:	5.5 bar	80 psi
Accuracy:	+/- 5%
Mounting thread (std):	7/8 - 18 heavy duty SAE

See datasheet for complete specifications

8210 SPEEDTRAP™ Speed Switch

Supply voltage:	8 - 40 VDC
Relay contat ratings:	0.1 to 10 Amps 0.1 to 8 Amps	28 VDC resistive load 28 VDC inductive load
Signal input operating range:	325 - 10,000 Hz
Signal input:	Min. 0.7 VRMS Max. 130 VRMS
Operating temperture:	-40 to 85˚C	-40 to 180˚F

See datasheet for complete specifications.

CSX-110 Hazardous Area Control Unit - Alternator Powered

Hazardous area rating:	11 2 G D	EEx d [ia] IIB T6
	T (ambient) = -20°C to 45°C
Electromagnetic compatibility:	MIL STD 461 E Clauses RE102 and RS103
Inputs & Outputs	CSX-110 Control Unit	CSX-111 Control Unit
Power and speed signal:	From alternator	From alternator
Outputs to shutoff valve:	1 valve solenoid	2 valve solenoids
Sensor circuits:	Intrinsically safe	Intrinsically safe
Temperature and pressure:	5 switches	5 switches
Optional shutdown input signal:	6 - 110 VDC	n/a
Aux power output:	28 VDC / 20A	28 VDC / 15A
Enclosure:
Material:	Aluminum
Size:	7" x 7" x 3" (179 x 179 x 78.5mm)
Ingress protection:	IP66
Cable glands:	ATEX approved

CSX-210 Hazardous Area Control Unit (Battery Powered)

Hazardous area rating:	11 2 G D	EEx d [ia] IIB T6
Temp. (ambient):	-20°C to 45°C
Inputs & Outputs:	EEx d [ia] IIB T6
Power:	12 VDC or 24 VDC (Battery or alternator)
Speed signal:	From alternator
Outputs to shutoff valve:	1 valve solenoid
Sensor circuits:	Intrinsically safe
Temperature & pressure:	5 switches
Optional shutdown input signal:	6 - 110 VDC
Enclosure:
Material:	Aluminum
Size:	7" x 7" x 3" (179 x 179 x 78.5mm)
Ingress protection:	IP66
Cable glands:	ATEX approved

CSX-300 Control Unit

Inputs & Outputs:	CSX-300	CSX-310
Power:	12 VDC	24 VDC
Speed signal:	Magnetic pickup / alternator	Magnetic pickup / alternator
Outputs to shutoff valve:	46A/12 VDC (pull) 1.1A/12 VDC (hold)	25A/24 VDC (pull) 0.5A/24 VDC (hold)
Manual shutdown:	CSX-840 (status indicator)	CSX-840 (status indicator)
Optional sensor circuits:	Max. 5 (CSX-301)	Max. 5 (CSX-311)
Enclosure:
Material:	Aluminum
Size:	6¼” x 3⅛” x 3⅜” (160 x 80 x 60mm)
Ingress protection:	IP66 with cable glands

RGR REVGUARD Speed Switch

Input power:

Supply voltage:

Max operating current:

12-32 VDC

At 12 VDC

At 24 VDC

At 32 VDC

reverse polarity protection

0.07A

0.08A

0.09A

Input signal:

Frequency range:

Input signal type:

10 Hz - 8,000 Hz

Sine wave or square wave