Gems Sensors & Controls FT-210 Operating Manual
Turbine Low Flow Rate Sensor
FT-210 Series - TurboFlow
®
Instruction Bulletin No. 217952
Operating and Installation Instructions
Prior to installation, confirm system versus sensor specifications and media compatibility of sensor. The
system needs to be filtered to 50 microns prior to the sensor, and pulses/water hammer effects should be
minimized to prevent unit damage. Observe arrow on bottom of unit for correct inlet and outlet port. Sensor
can be mounted in any horizontal, vertical, or skewed orientation. Correctly installed, the sensor works
maintenance-free.
Installation
1/4" NPT Units:
Apply a sparse amount of thread sealant (Permatex "No More Leaks" ®) or Teflon® tape to male threads.
Insure that sealant does not enter into the turbine and bearing internal area. Hand-tighten unit in place.
Turn an additional 1/4 turn to provide seal. If seal leaks, turn an additional 1/4 turn until leak stops.
Do not exceed one additional turn total.
G 1/4 Units:
G 1/4 units mate with a flat face seal washer (70 shore, 7 mm ID, 13 mm OD, 2, 0 mm thick)
similar to a garden hose arrangement. This arrangement requires no sealants; hand-tightening should be
sufficient for sealing.
Specifications
Wetted Parts
Operating Pressure
Burst Pressure
Operating Temperature
Viscosity
Filter
Input Power
Output
Accuracy
Repeatability
Electrical Connection
Spade Terminal Connection
(2.8 mm)
Body: Nylon 12/Turbine: Nylon 12 Composite/Bearings: PTFE/ 15% Graphite
350 psi (24 Bar)
1400 psi (100 Bar)
-4° to 212°F (-20° to 100°C)
32 to 80 SSU (1-15 Centistokes)
< 50 Microns
5-24 VDC @ 8 mA
NPN Sinking Open Collector @ 20 mA, Max.
± 3% of Rdg. Normal Range
0.5% FS Normal Range
Spade Terminals .110/.275 X .020" (2.8/7 X .5 mm) or Din Connector (2 Poles + Ground)
Dimensions
With optional Din Connector
.11"
3 PLCS
.67"
(17 mm)
1.78"
(45 mm)
1.14"(29 mm)
.86"(22 mm)
1.37"
(35mm)
Electrical/Output Signal ( )
The output signal is a square wave signal, whose frequency varies linearly with flow rate. An external pull-up resistor
(user-supplied) is required to insure that the open collector will sink less than 20 mA.
Wiring Diagram
5-24 VDC
Part
Number
212460
212465
212460E
212465E
Port
G 1/4
1/4" NPT
G 1/4
1/4" NPT
2K-10K Ohms
Customer Supplied
Flow Ranges
GPM
0.03-.66
0.03-.66
0.03-.66
0.03-.66
0.1-2.5
0.1-2.5
0.1-2.5
0.1-2.5
LPM
0 VDC
OUTPUT
Per Gallons
83200
83200
83200
83200
Pulses
Per Liters
22000
22000
22000
22000
W/ Optional Din Connector
Function
V+
Din Termination
1
-
Output
Frequency
Output
37 - 917 Hz
37 - 917 Hz
37 - 917 Hz
37 - 917 Hz
Spade Terminals
Spade Terminals
2
Electrical
Termination
Din Connector
Din Connector
The product is designed and manufactured in accordance with Sound Engineering Practice as defined by the Pressure Equipment
Directive 97/23/EC. This product must not be used as a “safety accessory” as defined by the Pressure Equipment Directive,
Article 1, Paragraph 2.1.3. The presence of a CE Mark on the unit does not relate to the Pressure Equipment Directive.
Important Points!
Product must be maintained and installed in strict accordance
with the National Electrical Code and GEMS technical brochure
and instruction bulletin. Failure to observe this warning could
result in serious injuries or damages.
Pressure and temperature limitations shown on individual
catalog pages and drawings for the specified flow sensors must
not be exceeded.
Selection of materials for compatibility with the media is
critical to the life and operation of GEMS flow sensors. Take
USA
P/N 217952
Rev. -
care in the proper selection of materials of construction;
particularly wetted materials.
Flow sensors have been designed to resist shock and vibration;
however, shock and vibration should be minimized.
Liquid media containing particulate and/or debris should be
filtered to ensure proper operation of GEMS products.
Flow sensors must not be field repaired.
Physical damage sustained by the product may render it
unserviceable.
Gems Sensors Ltd.
Lennox Road
Basingstoke
Hants. RG22 4AW
U.K.
Phone: +44 (0) 1256.320244
Fax: +44 (0) 1256.473680
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