sensitivity - keypad adjustable with signal strength
indication
power input - built-in battery with internal charger -
switch select 100-160VAC 50/60Hz or 200-260VAC 50/60Hz -
12 VDC (from external battery)
outputs - 4-20mA, RS232C with programmable baud rates up
to 19,200
data logger - 50,000 point with multi-session and flow
report capability
PC software for data log retrieval by direct serial
connection, or by dial-up connection with modems and
telephone lines
1 set cables and plugs - AC power, 4-20mA, 12VDC, RS232
1 manual
PORTABLE DOPPLER FLOW METER SPECIFICATIONS
SCOPE: This specification covers a portable, ultrasonic
Doppler-type flow meter as manufactured by Greyline Instruments,
Massena, New York / Long Sault, Ontario. This instrument shall
provide for non-intrusive flow measurement, indication,
totalizing and transmitting of the flow rate in a full pipe.
GENERAL:
Each portable Doppler flow meter shall have the following
design features and engineering specifications:
A. PERFORMANCE SPECIFICATIONS
Have an accuracy of ±2% of full scale on most wastewater
applications. Have linearity of ±0.5% and repeatability
of ±0.1%.
Operate on liquids with entrained particles or gases of
100 microns or larger and minimum concentrations of 75
ppm.
Operate on the following pipe materials: carbon steel,
stainless steel, ductile iron, copper, PVC, FRP, ABS and
other selected engineering materials.
Operate on AC/DC power. Include an internal 12VDC gel
type rechargeable battery with minimum capacity for 16
hours continuous battery operation. Recharge and operate
with power input of 100-160VAC and 200-260VAC 50-60Hz,
and 12VDC.
B. TRANSDUCER
Have a single-head, strap-on transducer with twin
piezo-electric ceramic transmit and receive crystals
encapsulated in epoxy resin and a stainless steel
housing.
The transducer shall be solid state and transformer
isolated, and designed to meet intrinsic-safe
requirements.
The transducer shall be waterproof and operate
continuously at temperatures from -10°F to 200°F
(-23°C to 93°C), and withstand accidental submersion to
10 psi.
The transducer shall be designed to install on pipes with
inside diameter ranging from 1/2" to 180" (12.5 mm
to 4.5 m).
Have a 12 ft (3.6 m) long flexible, shielded coaxial pair
cable extending from the transducer to the electronics.
Shall include Manufacturer's recommended sensor coupling
compound and adjustable stainless steel sensor mounting
clamp.
C. ELECTRONICS
Have a portable aluminum enclosure in a padded Cordura™ carrying case with shoulder
strap. Total weight shall be less than 10 lbs. (4.5 kg).
Electronics shall be designed for continuous operation at
temperatures from -10° to 140°F (-23° to 60° C).
Have a built-in 3-key calibrator with operator selection
of parameters through visual prompts from a Menu
calibration system. Systems requiring calibration by
Parameter codes, BCD switches or external calibrators
shall not be accepted.
Have a continuous 4-digit LCD display indicating flow in
user-selected engineering units. Have a 16-digit
alphanumeric display indicating totalized flow, units of
calibration, and/or signal strength.
Have flow proportional 4-20mA output rated to maximum
resistive load of 500 ohms.
Have a built-in 50,000 point data logger, RS232C serial
output and connecting cables. Data logger shall support
time and date-stamped logging and generate formatted flow
reports including total, average, minimum, maximum and
times of occurrence.
Include Windows software for data log retrieval, graphing
and export.
Have keypad adjustable sensitivity which modifies the
received signal strength to reduce interference. Have
automatic signal strength monitoring to drive the flow
reading to zero at low signal threshold.
Have a battery status indicator with automatic low
battery shut off and battery overcharge protection.
D. OPTIONAL FEATURES FOR INSERTION IN SPECIFICATION AS
REQUIRED:
Have a High Temperature Sensor for operating temperatures
from -40° to 302°F (-40° to 150°C).
Include additional 150 g. manufacturer's recommended
ultrasonic sensor coupling compound.
Include 50 ft (15 m) length Sensor Cable extension
complete with connecting plugs.
E. MANUFACTURER
The instrument shall be a Model PDFM 4.0 Portable Doppler Flow
Meter as manufactured by Greyline Instruments Inc., and warranted
against defects in materials and workmanship for one year.
Specifications are subject to change without
notice.
Please contact Greyline if you need more information
or for advice in your application. We can provide quotations and refer you to
the Greyline sales representative in your area. (To
receive complete information please provide your name,
mailing address, phone and fax numbers):
Canada: