Flowpro 104 Quick Start Manual

1” Flowmeter Model 104

www.flowprometers.com

Product Description

FlowPro’s Model 104 is a 1” vortex
flowmeter that provides highly accurate,
real time flow monitoring with
totalization. It provides an always-on
digital display with flowrate in
gallons/minute, totalization in gallons,
leak detect, and over range. Model 104
is a 2 wire pulse output meter.

General Specifications

Size 1”
Flow Range (Indicated) 0.5 to 25.0 GPM (0.1 GPM resolution)
Accuracy

- RANGE 1.0 to 20.0 GPM

- RANGE 20.1 to 25.0 GPM:

- RANGE 0.5 to 0.9 GPM:
Update Rate

-RANGE 1.0 to 25.0 GPM

-RANGE 0.5 to 0.9 GPM

Pressure Loss at 20GPM Less than 1.5 psid
Burst Pressure 350 psi minimum
Operating Temperature 32 F to 140 F
Construction Materials

-Vortex Generator Stainless Steel

-Vortex Sensor EPDM Rubber (wetted surface)

-Meter Body ABS
LCD Display

-Flowrate (GPM) 3 digit, 0.1 GPM resolution

-Flow Total (Gallons) 8 digit, 0.1 Gallon resolution

-Alerts Out of flow range, Leak Detect

-Auto Reset 10 Million gallons

+/-2% of reading
Usable Over-range, Accuracy Not Specified
Leak Detect Range

1.7 seconds
< 5 minutes

FlowPro, LLC – 357 S. McCaslin – Louisville, CO 80027 – PH: 866-774-2532

1” Flowmeter Model 104

www.flowprometers.com

Installation Specifications:

Connections Compatible with all PVC/ABS fittings

*correct glue required

Meter Orientation All orientations acceptable

*pipe must be full

Special Requirements 10” upstream straight run, 5” downstream for guaranteed

meeting of accuracy specification.

Electrical Interface Specifications:

Frequency 1.35Hz to 80Hz
Pulse Width 1ms
Current 900uA @ 0.5Vdc to 40Vdc
Vhigh Supply voltage – (900uA * Supply Impedance)
Vlow (ON state) 1Vdc @ up to 25mA
Vsource (min) 9V @ Max Source Impedance 1000 ohms (*See Note 1)

NOTE 1: Maximum impedance at any source voltage can be determined by the following equation:

Rsource-max = Vsource/(0.08/Vsource)

Cable Specifications:

Included cable 18awg solid copper, Red for positive, Black for negative
Attached Lead Length 12”
Maximum Lead
Extension
Connection Leak tight wire nuts preferred

1000 feet with twisted pair shielded

Conversion Equations:

Frequency = (GPM/0.322) – 0.2 GPM = (Frequency + 0.2) * 0.322

FlowPro, LLC – 357 S. McCaslin – Louisville, CO 80027 – PH: 866-774-2532