STANDARD SENSORS FOR FIXED POSITION
Examples shown designed for use in atmosphere or vacuum chamber.
Our most popular sensor for the 727R series is the JR sensor shown below.
It features an 8" (20.3cm) reach and 0.1" (2.54mm) gap. Optional
copper fluid lines improve temperature stabilization, thereby improving
performance.
ADJUSTABLE AND SCANNING SYSTEMS FOR INSPECTION STATIONS
Dual head track mounted adjustable systems allow for evaluation of webs
from 24 to 60 inches.
Lateral scanning of a slow moving web can be used to verify product
quality over the entire surface of a substrate.
EXTENDED RANGE DUAL SENSOR SYSTEM
The dual sensor incorporated in this sensor head allows a resolution
of 0.01 millimho in Low range and full scale value of 20 mhos in High range.
Stainless Steel Dual Sensor head is shown with RTC module and rack mounted
display console. Rear panel analog output allows for chart recorder
display of conductance values. RS232C serial interface is also standard.
TRIPLE HEAD VACUUM CHAMBER SENSOR UNIT
Sensor assembly shown has a 52" opening for web passage.
This sensor assembly provides adjustable outer sensor position.
This sensor assembly provides adjustable outer sensor position as well
as vacuum-tight RTC boxes (RTC modules are normally mounted outside chamber
bulkhead) , which allow much longer cable distances where required inside
large chambers.
COMPUTER INTERFACE FOR DATA AND PLC
RS232C serial interface allows automated measurements process control
or product quality reports. PLC interfaces can be designed to perform
remote zeroing or range switching.
727R SPECIFICATIONS
CONSOLE and REMOTE TRANSDUCER CONTROLLER (RTC)
• Conductance range of 0.0001 to approx. 10 Mhos/sq. (10,000
to 0.1 Ohms/sq.)
• Designed to minimize the effects of temperature on sensor head
and electronics modules.
• Standard rack size: 5-1/4 inch x 19 inch front; 14.5 inch deep
• RTC Module/s: 7.5 x 4.75 x 3.25 inches, located near each respective
sensor head.
• Push-button zero with calibration potentiometers accessible
at the RTC Module. Vacuum in-chamber models are sealed.
• The output in Mhos or Ohms is displayed by large height 0.56
inch 4-1/2 digit red LED's.
• Over-range or excess conductance indication
• Analog output 0 to 2 volts (or 0 to 10 volts VIA internal selection)
SENSOR HEAD
• Selection of resolution, gap, material, etc. See photographs
and description.
• Liquid temperature stabilized sensor heads for ultra-low thermal
drift performance
• Swing out sensor heads for convenience of web handling and
zero checking
• Multiple sensing heads and sensing points, nominal sensor element
gap is 0.100 inches
• Long reach arms for 72" wide webs. Scanning systems also available
• Optional Teflon or Titanium Nitride sensing head protection
rings
GENERAL
• Extended higher or lower conductance range instruments are
available for judgements between 0.01 to 100,000 Ohms/sq.
• Two conductance ranges with front panel selection:
Low range 0.0001 to 2.0000 Mho. (10,000 to 0.5 Ohms per sq.) High range
00.001 to 10.000 Mho. (1000 to 0.10 Ohms per sq.)
• Serial RS-232C output is available in all standard conventions.
ACCURACY/PRECISION/PERFORMANCE
• Speed tested to 3000 feet/minute
• 0.0001 Mho resolution; or optional 0.00001 Mho resolution
• For conductance values greater than 2 millimhos, correlation
with DC four contact type probes is typically better than ±1 %
• Display response is 300 Milliseconds
• Analog output response time to stable voltage value is 30 msec.
• Superposition linearity per octave better than 1%
• Composite sensor head and electronics temperature drift is
less than 70 micromho/degree Centigrade
POWER REQUIREMENTS/DIMENSIONS
• AC input voltage 120/240/220 V; 50/60 Hertz
• Power consumption: approx. 15 Watts
• Console dimensions: approx. 13.5 cm (5-1/4 in.) high; 48cm
(17 in.) wide (19-inch standard rack); 37 cm (14.5 in.) deep
(Specifications subject to change without notice)
