Omega Products FTB501 User Manual

HIGH ACCURACY,HIGH PRESSURE
LOW FLOWMETERS Up to 6000 psig

FTB500 Series

Starts at

$

2501

Standard

 1% of Rate Accuracy
 1000 psig, 6000 psig

Optional

 For Flows Down

to 0.02 GPM

 Linear Pulse and

Analog Outputs

FTB500 series low flowmeters
offer extremely accurate low flow
measurement of liquids. They utilize
a Pelton wheel-like rotor whose
motion is converted by a pickup
coil into a pulse output that is
proportional to flow. Each flowmeter
comes with an integral signal
conditioner, powered by either
15 to 35 Vdc or 115 Vac (optional)
to provide amplified frequency
and analog outputs. The signal
conditioner corrects for the inherent
zero offset of the flowmeter pulse
output. It is mounted in a NEMA 4
(IP66), explosion-resistant enclosure
rated for class I, groups C & D,
class II, groups E, F, and G.

SPECIFICATIONS

Accuracy: ±1% of rdg for pulse,

±0.05% FS for analog outputs

Analog Output Response Time:

adjustable from 0.5 to 2 seconds
Viscosity: 0.8 to 25 cSt, unit calibrated

to specific viscosity value

Repeatability: ±0.25% of rdg
Fluid Temperature Range:

-268 to 232°C (-450 to 450°F)

Operating Ambient Temperature:

-20 to 80°C (-4 to 176°F)

Materials of Construction:

316 SS housing, 440C ball bearings,

17.4 PH rotor, and Rulon-J seals

Connections:

MS-33656-8;

Max Pressure Drop (at 1cSt):
Max Pressure: 1000 psig std,

6000 psig optional

TTL Frequency Output: 0 to 125 Hz
Power: 15 to 35 Vdc std, 115 Vac optional
Analog Output: 4 to 20 mA into 375 Ω

max std, 0 to 5 Vdc optional
Weight: 2.7 kg (6 lb)

1

" 37° flare per

⁄

2

1

MNPT adaptor kit opt.

⁄

2

10 psid

FTB501, $2501,
shown smaller
than actual size.

MADE TO ORDER!

To Order

Model No. Price (US GPM)
FTB501-(*CK) $2501 0.02 to 0.15

FTB502-(*CK) 2341 0.025 to 0.25
FTB503-(*CK) 2341 0.05 to 0.5
FTB504-(*CK) 2285 0.1 to 1.0
FTB505-(*CK) 2285 0.2 to 2.0

Accessories

Model No.

FTB-K3 $310

Comes complete with operator’s manual and 10-point NIST calibration certificate for 1CK of water.

CK) Specify liquid viscosity (in cSt), from 0.8 to 25 cSt, for viscosities other than 1, and add

(*

$625 to price.

To order with 0 to 5 Vdc analog output, add suffix “-5VDC” to model number, no additional cost.
To order with 115 Vac power, add suffix “-115VAC” to model number, and $100 to price.
Standard max pressure is 1000 psig. To order with 6000 psig max pressure, add suffix “-6KP”

to model number, and $250 to price.
Ordering Examples: FTB-501-(1CK) flowmeter for 1 centistoke viscosity liquid, 0.02 to

0.15 GPM range, $2501.
FTB-503-(4CK)-115VAC, flowmeter for 4 centistoke viscosity liquid, 0.05 to 0.5 range, and

115 Vac power, $2341 + 625 + 100 = $3066.

(Specify Model No.)

Linear

Flow Range

Price Description

1

" MS flare to

⁄

2

adaptor kit with 10"
upstream and 5"
downstream straight
SS tubing, weight: 454 g (1lb)

Recommended Reference Book: Fluid Flow Measurement,

PE-1355, $80. See Section Y for Additional Books

F-94

1

⁄

2

FTB500 has both pulse and analog
ouputs, and can be used with the DPF700
flowrate indicators. Prices from $260.
See page M-5 for details.

MNPT

Pelton-type rotor is well suited to
high head, low flow applications.

,

F

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