AMETEK 955S Smart Brik LDT - Manual (Page 3)

3 1080 N. Crooks Road • Clawson, MI 48017 • 800.635.0289 • 248.435.0700 • Fax 248.435.8120 • www.AMETEKAPT.com
Specifications
Input Voltage 10 to 30 VDC
Current Draw
Voltage Units
Current Units 80mA @ 10 VDC
35mA @ 30 VDC
90mA @ 10 VDC
55mA @ 30 VDC
Output 0 to 10 VDC
10 to 0 VDC
-10 to 10 VDC
10 to -10 VDC
-5 to 5 VDC
5 to -5 VDC
0 to 5 VDC
5 to 0 VDC
4 to 20mA
20 to 4mA
Linearity +/- 0.05% of Stroke or +/- 0.028” whichever is
greater
Accuracy +/- 0.1% of Stroke or +/- 0.050” whichever is
greater
Repeatability +/- 0.01% of Full Stroke or +/- 0.014” whichever
is greater
Update Time
Stroke Length:
4” ≤ 50”
51” ≥ 100”
101” ≥ 150”
151” ≥ 180”
1ms with 5ms settling time
2ms with 4ms settling time
3ms with 3ms settling time
4ms with 4ms settling time
Operating Temperature -20° to 70° C
Span Length
4” to 180”
Null Zone 3.00”
Dead Band 1.50”
LED Green = Power is applied and magnet is present
Red = Fault, magnet is in the Dead Band or lost
Yellow = Out of the active programmed range
Connector Standard 4 Pin Micro
12mm Euro Connector
Approvals CE
FM - When installed per drawing E0241100
Enclosure IP67, IP68 Optional
Output Load
Voltage Output
Current Output
1KΩ (1.5KΩ for +/- 10V) (minimum)
(Vin - 4) / 20mA (maximum)
Specifications are subject to change without notice.
Specifications are based on a typical 36” LDT.
NOTE 3: ZERO or SPAN can be adjusted individually
without setting the other.
NOTE 4: ZERO = 0V on 0 to 10 VDC units and 4mA on 4
to 20mA units.
For your convenience, Ametek offers an in-line
programming unit (955-1409) that can be installed in-
line with the LDT. The in-line programmer uses a rocker
switch to program the zero and span. For details, see
accessories on page 7.
Automatic Gain Control
The Automatic Gain Control feature is only used when
sensing a magnet other then the standard SD0521800
slide magnet. If you are using the standard slide magnet
skip to Setting Zero and Span Position.
When using the Floating Magnet assembly (SD0522100),
the magnet should be installed within 3/8” of the sensing
surface. The magnet assembly should also be installed
in such a manner that it remains an even distance from
the aluminum extrusion throughout the entire stroke.
Improperly installed magnets can result in output signal
non-linearity.
To set the Automatic Gain Control (AGC) level for the
probe follow these steps:
1. Place magnet assembly close to the Dead Band (but
within the active region) of the probe
2. Power down the probe
3. Short “PRGM” pin (pin 2) to ground (pin 3)
4. Apply power to probe
A. The LED flashes RED indicating it is in the AGC
mode.
B. The LED will change to flashing GREEN when it
has determined the proper AGC level and has
saved it to non-volatile memory.
NOTE: When the probe is in AGC mode, the output will
be at either 0 volts or 4mA, depending on the model that
was ordered.
The AGC is now complete.
To place the probe back into the normal operating mode
follow these steps:
1. Power down the probe
2. Remove short from “PRGM” pin
3. Apply power to the probe
The probe is now in the normal operating mode.
NOTE: The north pole of the magnet should be pointed
towards the probe.