Turbine Flow Rate Sensor FT-110 Series Instruction Bulletin No. 173926

Turbine Flow Rate Sensor FT-110 Series Instruction Bulletin No. 173926
Turbine Flow Rate Sensor
FT-110 Series
Instruction Bulletin No. 173926
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
3/8" 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 3/8 Units:
G 3/8 units mate with a flat face seal washer (90 shore EPDM, 0, 5 mm ID, 14, 5 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
Body: Nylon 12/Turbine: Nylon 12 Composite/Bearings: PTFE/ 15% Graphite
Operating Pressure
200 psi
Burst Pressure
2500 psi
Operating Temperature
-4° to 212°F (-20° to 100°C)
Viscosity
32 to 81 SSU (.8 - 16 Centistokes)
Filter
< 50 Microns
Input Power
5-24 VDC @ 8 mA
Output
NPN Sinking Open Collector @ 50 mA, Max.
Accuracy
± 3% of Rdg. Normal Range
Repeatability
0.5% FS Normal Range
Electrical Connection
Spade Terminals .110/.248 X .031" (2.8/6.3 X .8 mm) or 1 Meter Cable
Dimensions (Space Terminal Connection Shown)
.11”
.68”
.87”
.87"
(22.0 mm)
(2.8 mm)
.25”
(17.3 mm)
(22 mm)
(6.3 mm)
1.25”
FLOW
(30.0 mm)
3/8” NPT
or
G
3/83/8
R
.20”
1/2”
(5.1 mm)
(12.7 mm)
2.17”
(55.1 mm)
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 50 mA.
Gems' cable and connector can be ordered as follows:
Part #173941: 3 Ft. Cable Assembly
Part #173942: 10 Ft. Cable Assembly
Wiring Diagrams
Red
R = 1 - 2.2 KOhm
5 - 24 VDC
Cable Connection
Bro
R
wn
k
Blac O VDC
Red
5 - 24 VDC
White
Black
Part Numbers
O VDC
Flow Ranges
Extended
Normal
3/8" NPT
G 3/8 Port
GPM
173931
173936
173932
173937
173933
173934
Pulses
Frequency
Per Gallons Per Liters
Output
LPM
GPM
LPM
.13 - 1.3
.5 - 5
.07 - 2.6
.25 - 10
26100
6900
58 - 575 Hz
.26 - 2.6
1 - 10
.07 - 2.6
.25 - 10
12500
3300
55 - 550 Hz
173938
.26 - 4
1 - 15
.07 - 4
.25 - 15
17400
4600
76 - 1150 Hz
173939
.26 - 4
1 - 15
.07 - 5.3
.25 - 20
8300
2200
37 - 550 Hz
173935
173940
.53 - 7.9
2 - 30
.13 - 7.9
.5 - 30
3800
1000
33 - 500 Hz
173931-C
173936-C
.13 - 1.3
.5 - 5
.07 - 2.6
.25 - 10
26100
6900
58 - 575 Hz
173932-C
173937-C
.26 - 2.6
1 - 10
.07 - 2.6
.25 - 10
12500
3300
55 - 550 Hz
173933-C
173938-C
.26 - 4
1 - 15
.07 - 4
.25 - 15
17400
4600
76 - 1150 Hz
173934-C
173939-C
.26 - 4
1 - 15
.07 - 5.3
.25 - 20
8300
2200
37 - 550 Hz
173935-C
173940-C
.53 - 7.9
2 - 30
.13 - 7.9
.5 - 30
3800
1000
33 - 500 Hz
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 173926
Rev. D
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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