Keller Swiss-Built Series 36XW High accuracy analog digital output submersible level transmitter
These pressure transmitters are designed for level measurements where the highest accuracy is required. Digital Output of Transmitter This Series is based on the stable, piezoresisitive transducer and a micro-processor electronics with integrated 16 bit A/D converter. Temperature dependencies and non-linearities of the sensor are mathematically compensated. With the READ30 software and the KELLER cable K-107, the calculated pressure can be displayed on a Palmtop, Laptop or PC. The READ30 software also allows the recording of pressure signals and the graphic display on the PC. Up to 128 transmitters can be hooked together to a Bus-system. Transmitter with Analog Output The micro-processor integrates a D/A converter of 16 bit for analog signal outputs of 4!-20 mA or 0!-10 V. The output rate is 100 Hz (adjustable). The digital output is available on all
transmitters with analog output. Programming With the KELLER software READ30 and PROG30, a RS485 converter (i.e. K-102, K-104 or K-107 from KELLER) and a PC (Laptop), the pressure can be displayed, the units changed, a new gain or zero set. The analog output can be set to any range within the compensated range. The level transmitters are available in two different versions:PAA-36 X W Absolute Pressure, Zero at Vacuum This probe is applied when the atmospheric pressure is measured by a separate barometer and when the water level is calculated as the difference between the absolute value and the ambient pressure.PR-36 X W Relative Pressure, Zero at ambient Pressure.This probe is itted with durable cable with an integral vent tube to the atmosphere. These level transmitters can be subject to internal condensation caused by installations in cold water on warm, humid days. If the reference tube is not terminated in a warm, dry enclosure, KELLER recommends the use of a purpose built cartridge illed with a silica gel which is itted at the end of the reference tube.
Speciications
Standard PreSSure rangeS (FS) and OverPreSSure in Bar
PR-36 X W 1 3 10 30
PAA-36 X W 1 3 10 30
Overpressure 3 5 20 60
(digital) (analog) (analog)
Output RS 485 4!-20 m (2-wire) 0!-10 (3-wire)
Supply (U) 8!-28 Vc 8!-28 Vc 13!-28 Vc
1)
Accuracy, Error Band (0...50 !aC 0,1 %FS 0,15 %FS 0,15 %FS
1)
Linearity + Hysteresis + Repeatability + Temp. Coeff. + Zero + Span Tolerance
Linearity (best straight line) 0,025 %FS
True Output Rate 100 Hz
Resolution 0,002 %FS
Long Term Stability typ. Range1 bar: 1 mbar
Range > 1 bar: 0,1 %FS
Load Resistance () < (U - 7 V) / 0,02 A (2-wire) > 5!ˉ00 (3-wire)
Electrical Connection Cable: Polyethylene (PE), vented
Insulation > 100 M / 50 V
Storage-/Operating Temperature Range -20!-80 !
Pressure Endurance 10 Million Pressure Cycles 0!-100 %FS at 25 !
Vibration Endurance, IEC 68-2-6 20 g (5...2000 Hz, max. amplitude !à 3 mm
Shock Endurance 20 g (11 ms)
Protection IP 68, iceproof
CE-Conformity EN 61000-6-1 to -6-4
Material in Contact with Media Stainless Steel 316L (DIN 1.4435) / Viton / PE
Weight (without cable) 200 g3
Dead Volume Change < 0,1 mm
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