Manual

AUTOMATION & PROCESS TECHNOLOGIES
®
7250V Digital Flex Stik Sensor Data Sheet
7250 Series
Flexible PVDF Low Voltage Magnetostrictive
Sensor with Serial Communications
The 7250V Digital Stik takes eld proven
magnetostrictive sensing technology
and packages it in an exclusive compact
design for greater reliability and easier
installation and mounting. It is ideal for
liquid level, interface level and measuring
temperature in a variety of liquid media
found in any size tank.
The 7250V Digital Stik combines low
power consumption with a patented high
resolution design. It requires only 5 volts
DC making it ideal for mobile, battery
operated and wireless applications.
The system has been designed to meet
EPA Leak Detection and API Inventory
Monitoring requirements and has
been approved for use in hazardous
environments.
The sensor’s electronics are SMT
components and integrated into a 5/8”
diameter sensing tube. This breakthrough
design eliminates the bulky electronics
enclosure at the top of the sensor and
offers greater options for insertion and
mounting.
Sensors are available in exible and
semi-exible PVDF (polyvinylidene
uoride) in lengths up to 70 feet. It’s Ideal
for use in tall tanks or installations where
overhead room is limited. PVDF material
provides an excellent option for monitoring
chemicals not compatible with stainless
steel.
The 7250 communicates through a
single signal. The data is transmitted via
asynchronous serial communications
and is offered with serial protocol options
including an ASCII format. There are
other options available to OEMs for use
in developing a communications interface
with the probe. The patented design
allows for very high resolution on a low
power budget. The resolution of the 7250
is 0.0001” with a linearity of 0.01% (See
specications).
Factory Mutual (FM) approved as
Intrinsically Safe for use in ethylene,
propane, gasoline, and many other
applications (See specications). The
7250 has been approved to the following
standards:
CSA C22.2 Nos. 25,142,157 and 213
FM 3600, 3610, 3611 and 3810
Cenelec EN 50014, 50020 and 50284
The 7250 has an inherently lower cost
design which results in savings. It provides
the same performance and reliability
as sensors that consume more power.
Combining low power requirements with
high resolution provides the ultimate
performance and reliability.
Specications
Power Supply
Voltage
Current (at +5 VDC)
+5 VDC ± 10% typical (+3.7 VDC min.)
10mA max. (8mA typical) plus
1.5mA max. (1mA typical) per temperature
sensor
Probe Length
Standard V Style
Option C Style
Probes available in 1” increments.
Consult Factory for longer lengths.
47” to 840”
25” to 192”
Operating Temperature
Sensing Area
Electronics Area
-40°C to 70°C (Hazardous Location)
-40°C to 70°C
Hazardous Areas Approvals
FM
-40°
=
<
Tamb
=
<
70° C
Class I, II, III, Div. 1
Groups C, D, E, F, G, T4
Class I, Div. 2
Groups A, B, C, D, T4
Class I, Zone 0, AEx ia IIB T4
ATEX
Ex ia IIB T4
NEMKO 05 ATEX 1219X
0344 II 1G
Pressure Rating
PVDF Probe: 150 psi max.
Float: Dependent. Call Factory.
Resolution
0.0001” (Protocol Dependent)
Repeatability
Equal to Resolution
Linearity
Probes 193” to 600”: ± 0.01% of span
or ± 0.039”, whichever is greater.
Hysteresis
Probes 193” to 600”: ± 0.002% of span
or ± 0.005”, whichever is greater.
Null Zone
Standard V Style: 12”
Option C Style: 9”
Dead Band
Standard V Style: 6” to 14”
Option C Style: 3”
Intrinsically Safe Barrier
See Installation Drawing E0241200.
Consult Factory.
Enclosure Material
Rating
PVDF IP68
Specications are subject to change without notice. Patented.