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temperature transmitter / switch | OMNI-T

Produktbeschreibung

general information:

The primary sensor consists of a platinum resistance sensor using thin film technology, which provides a very good response time, due to the lance diameter of 4 mm.

With these sensors, switching points can be set directly on site for exceedance or shortfall of process values. This setting can be carried out via the display, even without the process. The present values, or error messages from the measuring point, are visible at all times, and all important parameters can be displayed on site (this saves time during installation, commissioning, and troubleshooting during the process). The analog current signal can be evaluated from large distances, and the present values can be provided there. The sensor is configured to your requirements. It is therefore ready for immediate use, without programming. If you wish to change parameters, you can set the device directly at the sensor, by means of the programming ring.

The entire family of OMNI sensors is made up in a modular way, by means of a building-block system (hardware and software). A 16-bit microcontroller with a 12-bit A/D converter and a 12-bit D/A converter ensures the necessary processing speed and accuracy. The signal is displayed with the measuring unit by a backlit LCD graphical display, and is converted into a 0/4 to 20 mA signal. Two switching points with push-pull output can be programmed across the whole range. The hysteresis of the switching points can be set separately in value and direction (min., max., switching value).

Exceeding or falling short of switching points, and error messages, are indicated by a flashing red LED visible from a long distance, together with a message in the display.

Further parameters can be modified by means of a code:

signal filter
unit (°C, °F ...) incl. automatic conversion of the values
output 0 or 4 to 20 mA
value assignment of 0/4 and 20 mA (setting of zero point and range)

By turning the programming ring to right or left, it is simple to modify the parameters (e.g. switching point, hysteresis...). To protect from unintended programming, it can be taken off, turned by 180° and replaced afterwards, or it can be removed completely, thus acting as a key.

analog output 4 mA to 20 mA or 0 V to 10 V
two programmable switches (push-pull)
backlit graphical LCD display (transreflective), can be read in sunlight and in the dark
programmable parameters via rotatable, removable ring (programming protection)
full metal housing with scratchproof, chemically resistant glass
physical unit in the display (selectable)
rotatable electronic head for best reading position
option tropical model
option high temperature model (200°C)
connection to USB interface for setting parameters
IP 67

specifications:

sensor:	platinum resistance sensor
process connection:	external thread G 1/4 A to G 1/2 A, union nut G 3/4 or Tri-clamp connection
measuring range:	- 0°C to +100°C standard range - 0°C to +200°C extended range for lance shape with gooseneck
measurement uncertainty:	±1 % FS
reproducibility:	±0.1 % FS
dynamic:	measuring cycle 31.25 ms, display cycle 0.5 s
dynamic (τ):	3 s
operating pressure:	lance shape PN 25 compact construction PN 100
temperature of medium:	same as measuring range
ambient temperature:	-20°C to +70°C
storage temperature:	-20°C to +80°C
materials medium-contact:	1.4571
materials, non-medium-contact:	1.4305, hardened mineral glass, Samarium-Cobalt
supply voltage:	<1 W
power consumption:	4 mA to 20 mA / load max. 500 Ω or 0 V to 10 V / load min. 1 k Ω
analog output:	0/4 to 20 mA 0/2 to 10 V via a 500 Ohm resistance to 0 V
switching outputs S 1 and S 2:	transistor output "push-pull" (short circuit proof and reverse polarity protected) l_out = 100 mA max. per output
display:	backlit graphical LCD-Display (transreflective), extended temperature range -20 to +70 °C, 32 x 16 pixels, background illumination, flashing LED signal lamp with simultaneous message on the display
ingress protection:	IP 67
weight:	approx. 0.35 kg
conformity:	CE