The 150mm High /Low Alarm Flow Meter with Optical Sensor Switch is a non-invasive means for detection of a HI or LOW flow. This sensor is ideal for signaling an alarm, cut-off valve, or other device when the float passes the detector (alarm, valve etc. not included).

Helps protect your processes and equipment from damage caused by extreme flow rates.

Its compact design and ease of operation make it a non-obtrusive simple-to-use addition to your flow meter.  Perfect for OEM applications. Also can be used in conjunction with a control relay to power alternate equipment or monitoring devices.

Use whenever maximum or minimum flow levels need to be monitored automatically.

PRINCIPLE OF OPERATION:
A small LED sensor and receiver are mounted on one side of the flow meter. The float inside the flow tube is detected as it passes across the beam of light. Sensor can be used to detect float passage beyond the set point of the sensor, or also can be set to monitor float position at specific level, signalling when float is outside of the range of the sensor light beam.

ACCURACY:
+/- 2% of full scale

REPEATABILITY:
0.5% of full scale

AMBIENT TEMPERATURE:
0-70 deg. C

MAXIMUM PRESSURE:
200 PSIG

CONNECTIONS:
1/8” FNPT

**MATERIALS OF CONSTRUCTION

END BLOCKS:
Aluminum or 316 Stainless Steel

ELASTOMERS:
Buna® & Viton® (Aluminum), Viton® (316 SS)

TUBE:
Borosilicate

INPUT POWER:
12 VDC, 15 VDC maximum, 250mA regulated, peak to peak maximum 100mA

POWER CONSUMPTION:
Less than 100mA

RESPONSE TIME:
500 milliseconds

SOURCE OF LIGHT:
65 nm, red LED

LIGHT IMMUNITY:
Pulse modulated

DRY CONTACT CLOSURES:
2 normally open, and normally closed relay’s

ALARM:
70 dB audible buzzer and /or visual LED

ALARM OPTIONS:
High, Low or High/Low

BUZZER:
User configurable, momentary or latch

RESET:
Reset button or remote through “D”-connector, to
disable relay or buzzer

INTERFACE:
9-pin “D”-connector.

OPTIONAL:
12VDC Power Supply, Tripod Base.